US20060216491A1 - Bonded structures formed form multicomponent fibers having elastomeric components for use as ink reservoirs - Google Patents

Bonded structures formed form multicomponent fibers having elastomeric components for use as ink reservoirs Download PDF

Info

Publication number
US20060216491A1
US20060216491A1 US11/378,065 US37806506A US2006216491A1 US 20060216491 A1 US20060216491 A1 US 20060216491A1 US 37806506 A US37806506 A US 37806506A US 2006216491 A1 US2006216491 A1 US 2006216491A1
Authority
US
United States
Prior art keywords
fibers
elastomeric
ink
jet printer
ink jet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/378,065
Inventor
Bennett Ward
Jian Xiang
Andreas Schneekloth
Jackie Payne
Joseph Payne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Filtrona Richmond Inc
Original Assignee
Filtrona Richmond Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Filtrona Richmond Inc filed Critical Filtrona Richmond Inc
Priority to US11/378,065 priority Critical patent/US20060216491A1/en
Priority to JP2008503055A priority patent/JP2008535685A/en
Priority to PCT/US2006/009825 priority patent/WO2006102136A2/en
Priority to EP06738831A priority patent/EP1863646A2/en
Assigned to FILTRONA RICHMOND, INC. reassignment FILTRONA RICHMOND, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PAYNE, JOSEPH, PAYNE, JR., JACKIE F., XIANG, JIAN, SCHNEEKLOTH, ANDREAS, WARD, BENNETT C.
Publication of US20060216491A1 publication Critical patent/US20060216491A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01Ink jet
    • B41J2/17Ink jet characterised by ink handling
    • B41J2/175Ink supply systems ; Circuit parts therefor
    • B41J2/17503Ink cartridges
    • B41J2/17513Inner structure
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326Condensation or reaction polymers
    • D04H1/4358Polyurethanes
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/541Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
    • D04H1/5412Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres sheath-core
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/541Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
    • D04H1/5414Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres side-by-side
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/76Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres otherwise than in a plane, e.g. in a tubular way
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/07Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments otherwise than in a plane, e.g. in a tubular way
    • D04H3/077Stick, rod or solid cylinder shaped
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/249921Web or sheet containing structurally defined element or component
    • Y10T428/249924Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity

Definitions

  • the invention relates generally to the field of multicomponent fibers and bonded fiber structures. More particularly, the invention is directed to three dimensional self-sustaining bonded fiber structures comprised of multicomponent elastomeric fibers. More particularly still, the invention relates to ink reservoirs formed of such three dimensional self-sustaining bonded fiber structures comprised of such elastomeric fibers.
  • Multicomponent fibers are typically manufactured by melt spinning techniques (including conventional melt spinning, melt blowing, spun bond, and other melt spun methods).
  • Multicomponent fibers may be manufactured in a side-by-side structure, a centric sheath-core structure, or an acentric (e.g. self-crimping) sheath-core structure.
  • Such fibers can be used in continuous filament or staple form and/or collected into webs or tows. They may be produced alone or as part of a mixed fiber system.
  • Multicomponent fibers can be used for a variety of purposes, including but not limited to woven and non-woven fabrics or structures and bonded or non-bonded structures.
  • bonded fiber structures As described in U.S. Pat. Nos. 5,607,766, 5,620,641, 5,633,082, 6,103,181, 6,330,883, 6,814,911, and 6,840,692, each of which is incorporated herein by reference in its entirety, there are many forms of and uses for bonded fiber structures, as well as many methods of manufacture.
  • bonded fiber structures are formed from tows or webs of thermoplastic fibrous material, where the bonded fiber structure comprises an interconnecting network of highly dispersed fibers bonded to each other at points of contact. These webs are formed into substantially self-sustaining, three-dimensional porous components and structures, which may be produced in a variety of sizes and shapes.
  • Porous, bonded structures formed from multicomponent fibers have demonstrated distinct advantages for fluid storage and fluid manipulation applications, because such bonded fiber structures have been shown to take up liquids of various formulations and controllably release them.
  • a typical use for these structures may include use as nibs for writing instruments, ink reservoirs for writing instruments and/or ink jet printer cartridges, wicks for a wide variety of devices and applications, depth filters, and other applications where the characteristics of such structures are advantageous.
  • Many of the advantageous characteristics of bonded fiber structures stem from the materials used in the fibers from which these structures are formed.
  • Ink jet printers often use an ink jet print-head mounted within a carriage. As the carriage moves across a media (i.e., paper), the ink jet print-head withdraws ink from an ink reservoir, and deposits the ink appropriately on the media (i.e., in the shape of letters).
  • the ink reservoir is typically contained in an ink jet printer cartridge.
  • the ink jet printer cartridge generally encases the ink reservoir.
  • the ink jet printer cartridge may be disposed on the carriage adjacent to the print-head, or it may be disposed elsewhere in the ink jet printer and may deliver ink to the print-head.
  • the ink reservoir Various materials may be used as the ink reservoir. Typical materials include open cell foam, and fibrous structures, such as felt. In selecting a material for the ink reservoir, several characteristics are considered. These characteristics primarily surround the material's fluid manipulation qualities. For example, capillarity strength, surface energy, porosity, leak resistance, resistance to imparting debris or extractibles into the ink, ease of assembly, and ink extraction may be examined.
  • ink jet printer cartridges must not leak during atmospheric pressure changes that may occur during shipping. Additionally, ink jet printer cartridges must not leak during certain impacts, such as if the ink jet printer cartridge is accidentally dropped. Finally, ink jet printer cartridges must deliver as much ink as possible to the print-head, rather than leaving unusable ink stranded in the cartridge.
  • the bonded fiber reservoir may comprise a three dimensional bonded fiber structure, wherein the three dimensional bonded fiber structure is comprised of a plurality of fibers bonded to each other at spaced apart points of contact, at least a portion of the fibers being multicomponent fibers having at least one elastomeric fiber component.
  • FIG. 1 is an isometric view of an ink jet cartridge, in accordance with some embodiments of the invention.
  • FIG. 2 is a cross-sectional view of an assembled ink jet cartridge, in accordance with some embodiments of the invention.
  • FIG. 3 is a cross-sectional view of a concentric sheath-core multicomponent fiber, used to form three dimensional self-sustaining bonded fiber structures, in accordance with some embodiments of the invention.
  • FIG. 4 is a cross-sectional view of an acentric sheath-core multicomponent fiber, used to form three dimensional self-sustaining bonded fiber structures, in accordance with some embodiments of the invention.
  • FIG. 5 is a cross-sectional view of a side-by-side multicomponent fiber, used to form three dimensional self-sustaining bonded fiber structures, in accordance with some embodiments of the invention.
  • FIG. 6 is a cross-sectional view of a multicomponent fiber, used to form three dimensional self-sustaining bonded fiber structures, in accordance with some embodiments of the invention.
  • FIG. 7 is a cross-sectional view of a multicomponent fiber, used to form three dimensional self-sustaining bonded fiber structures, in accordance with some embodiments of the invention.
  • Embodiments of the present invention provide multicomponent fibers having one or more elastomeric components that can be used to form resilient bonded fiber structures.
  • multicomponent fiber refers to a fiber having two or more distinct components integrally formed from polymer materials having different characteristics and/or different chemical nature. Bicomponent fibers are a particular type of multicomponent fiber.
  • bicomponent fiber refers to a fiber having two distinct components integrally formed from polymer materials having different characteristics and/or different chemical nature. While other forms of bicomponent fiber are possible, the most common types are formed with “side-by-side” or “sheath-core” relationships between the two polymer components.
  • bicomponent fibers comprising a core of one polymer and a coating or sheath of a different polymer are particularly desirable for many applications since the core material may be relatively inexpensive, providing the fiber with bulk and strength, while a relatively thin outer component of a more expensive but unique sheath material may provide the fiber with unique properties, particularly with respect to bonding.
  • the term “elastomeric component multicomponent fiber” or “ECM fiber” means a multicomponent fiber having at least one component comprising an elastomeric material.
  • the term “elastomeric component bicomponent fiber” means a bicomponent fiber having at least one component comprising an elastomeric material.
  • the term “elastomeric material” refers to a macromolecular material that returns rapidly to its initial dimensions and shape after substantial deformation and release of stress.
  • fluid means a substance whose molecules move freely past one another, including but not limited to a liquid or gas.
  • fluid as used herein may also be multi-phase, and may include particulate matter suspended in a liquid or gas.
  • a particular application of three dimensional self-sustaining bonded fiber structures comprised of ECM fibers may be as an ink jet reservoir.
  • Ink jet reservoirs made with ECM fibers have demonstrated several beneficial properties.
  • an ink jet cartridge using a reservoir according to embodiments of the invention has been shown to be resistant to leakage and has unexpectedly demonstrated a high degree of ink-release from the cartridge.
  • Test data have indicated that reservoirs formed from ECM fibers may be used with a wide variety of ink formulations.
  • the specific chemistry of the ECM fibers used, including any finishes, may be tailored to provide a particular surface energy corresponding to the specific ink formulation with which they will be used.
  • Ink reservoirs comprised of bonded ECM fibers may be resilient, or resistant to taking a compressive set, and may therefore provide a material which has a high degree of conformance to the interior structure of an ink jet reservoir cartridge. This increased conformance may allow the reservoir to maintain contact with other ink conduit elements inside the cartridge. Maintaining contact to other such elements under severe environmental conditions (e.g., thermal shock, physical shock or vibration, repeated removal and loading of the cartridge from the printer, etc.) may reduce the likelihood of failure of the cartridge.
  • severe environmental conditions e.g., thermal shock, physical shock or vibration, repeated removal and loading of the cartridge from the printer, etc.
  • Ink reservoirs comprised of bonded ECM fibers may also exhibit properties that assist in easier refilling.
  • the bonded fiber structure reservoir may be penetrated with a large filling needle, and may reseal when the needle is withdrawn. This may facilitate a more rapid filling that is conventionally achieved with standard, non-resilient fiber-based reservoirs.
  • the ink jet printer cartridge 10 may be generally comprised of a housing 100 and a reservoir 200 .
  • Ink jet housing 100 and associated reservoirs may be generally rectangular in shape, typically with 90 degree angles on all sides.
  • the dimensions of the cartridge can typically range from less than 5 millimeters to 100 millimeters.
  • a series of design considerations are often employed, which may include designing a cartridge which can hold 6 or more reservoirs and which will fit into typical ink jet printer designs.
  • Non-rectangular shapes may also be employed, in which case, the reservoir(s) may be shaped accordingly.
  • the housing 100 may comprise an air vent 110 , a fluid outlet 120 , and stand-offs or baffles 130 .
  • the air vent 110 may generally be disposed on the top surface of the housing 100 , and may allow air to vent into the housing 100 , thereby allowing the even flow of ink out of the housing 100 .
  • a void 111 may exist near the air vent 110 , which may be used to contain ink that may flow out of the reservoir 200 due to environmental conditions. Additionally, the air vent 110 may be used, in certain types of ink jet printer cartridges, to fill the ink jet printer cartridge with ink during assembly.
  • the fluid outlet 120 may be disposed on the bottom of the housing 100 .
  • the fluid outlet may contact a printer head or other device which may draw ink from the housing 100 .
  • the outlet may contain a wick, which may draw the ink from the reservoir 200 via increased capillary strength.
  • the stand-offs or baffles 130 may be shoulders or other detents integral to the housing, which may hold the reservoir 200 in a particular location.
  • the reservoir 200 may be comprised of a porous, three dimensional, self-sustaining bonded fiber structure formed from ECM fibers 210 .
  • the bonded fiber structure reservoir 200 may have a certain capillary pressure that keeps ink inside the reservoir until drawn from the reservoir by either a print head pump or a higher capillary pressure wick. Additionally, the ink reservoir 200 may be designed to have enough capillary force to inhibit leakage as a result of mechanical shock or changes in atmospheric pressure.
  • the bonded fiber ink reservoir 200 may be cut to dimensions suitable for the housing 100 . These dimensions may be slightly oversized, in order to ensure a press-fit of the reservoir 200 in the housing 100 .
  • the network of ECM fibers 210 that comprise the reservoir 200 retains and stores various formulations of ink through the ECM fiber's capillarity characteristics.
  • ECM fibers that may be used in some embodiments of the invention include (i) sheath-core multicomponent fibers where the sheath is comprised of an elastomeric material and the core is comprised of a non-elastic material; (ii) sheath-core multicomponent fiber where the sheath and the core are both comprised of elastomeric materials with the core material different physical and/or thermal characteristics from the sheath material; (iii) melt blown side-by-side bicomponent fibers, where one component is comprised of an elastomeric material; and (iv) melt blown side-by-side bicomponent fibers, where both components are comprised of elastomeric materials, and one component has different physical and/or thermal characteristics from the other.
  • FIG. 3 illustrates an exemplary ECM fiber of the invention.
  • the fiber is formed as a sheath-core bicomponent fiber 300 having a core component 310 surrounded by a sheath component 320 , wherein the sheath component comprises a thermoplastic elastomer.
  • the use of an elastomer as the sheath component 320 is particularly advantageous in that elastomeric materials generally bond easily to one another and to other fiber materials.
  • the core component 310 of the sheath-core bicomponent ECM fiber 300 may provide strength and stability to the fiber, while the elastomeric sheath component 320 may allow the sheath-core bicomponent ECM fiber 300 to stretch relative to other fibers to which it is bonded. This stretchable bond may provide a resiliency to the bonded structure that is not attainable using conventional sheath-core fibers.
  • the sheath-to-core ratio of ECM fibers of the invention may be tailored depending on the particular materials, the application of the fibers, and the method of manufacture. Typical sheath-to-core volume ratios may be in a range from 10:90 to 90:10. In particular embodiments, the sheath-to-core volume ratio range from 25:75 to 40:60.
  • the sheath-core bicomponent ECM fiber 300 is a concentric sheath-core fiber; that is, the sheath and core have substantially concentric circular cross-sections.
  • Other ECM fibers according to the invention may be formed as acentric sheath core fibers as exemplified by the acentric sheath-core ECM fiber 400 shown in FIG. 4 .
  • the acentric sheath-core ECM fiber 400 has a sheath component 420 that comprises an elastomeric material and a core component 410 .
  • the sheath and core components may be substantially circular in cross-section, but with offset centers. This acentric geometry may be used to produce a self-crimping fiber, which may facilitate the production of a loftier, bulkier, and more elastic web.
  • Melt-blown ECM fibers according to the invention may also be formed in a side-by-side configuration, as exemplified by the side-by-side ECM fiber 500 shown in FIG. 5 .
  • the side-by-side ECM fiber 500 has a first component 510 that comprises an elastomer and a second component 530 .
  • the side-by-side configuration assures that at least a portion of the surface of an elastomeric component 510 is exposed for bonding with other fibers.
  • FIG. 6 illustrates a multicomponent ECM fiber 600 according to the invention that has three components 610 , 620 , 630 , any one or more of which may comprise an elastomeric material.
  • ECM sheath-core fibers may also be produced with more than two components.
  • a multicomponent sheath-core ECM fiber 700 may be comprised of a sheath component 730 that comprises an elastomeric material, an intermediate component 720 , and a core component 710 . Similar fibers may be produced with acentric geometries.
  • the core components 310 , 410 , 710 of sheath-core ECM fibers 300 , 400 , 700 , the second component 510 of the side-by-side ECM fiber 500 , and the second and third components 620 , 630 of the side-by-side ECM fiber 600 may be non-elastomeric or may comprise elastomeric materials having different material and/or thermal characteristics from the elastomeric materials of the first fiber components 320 , 420 , 530 , 620 , 630 and 730 .
  • core components 310 , 410 , 710 and side-by-side components 530 , 620 , 630 may comprise a crystalline or semi-crystalline polymer.
  • Such polymers may include, but are not limited to: polypropylene, polybutylene terephthalate, polyethylene terephthalate, high density polyethylene and polyamides such as nylon 6 and nylon 66 .
  • the various elastomeric components of the ECM fibers of the invention may comprise any suitable elastomeric material.
  • Suitable thermoplastic elastomers may include, but are not limited to: polyurethanes, polyester copolymers, styrene copolymers, olefin copolymers, or any combination of these materials.
  • thermoplastic polyurethanes thermoplastic ureas, elastomeric or plastomeric polypropylenes, styrene-butadiene copolymers, polyisoprene, polyisobutylene, polychloroprene, butadiene-acrylonitrile, elastomeric block olefinic copolymers (such as styrene-isoprene-styrene), elastomeric block co-polyether polyamides, elastomeric block copolyesters, and elastomeric silicones may be used.
  • thermoplastic polyurethanes have been shown to be particularly suitable for producing ECM fibers for use in bonded fiber structures.
  • thermoplastic polyurethane or “TPU” encompasses a linear segmented block polymer composed of soft and hard segments, wherein the hard segments are either aromatic or aliphatic and the soft segments are either linear polyethers or polyesters.
  • the defining chemicals of TPUs are diisocyanates, which react with short chain diols to form a linear hard polymer block.
  • Aromatic hard segment blocks are usually based in aromatic diisocyanates, most commonly MDI (4,4′-Diphenylmethane diisocyanate).
  • Aliphatic hard segment blocks are usually based in aliphatic diisocyanates, most commonly hydrogenated MDI (H12MDI).
  • Linear polyether soft segment blocks commonly used include poly(butylene oxide) diols, poly(ethylene oxide) diols and poly(propylene oxide) diols or products of reactions of different glycols.
  • Linear polyester soft segment bocks commonly used include the polycondensation product of adipic acid and short carbon-chain glycols. Polycaprolactones may also be used.
  • Thermoplastic polyurethanes are commercially available from suppliers such as DuPont®, Bayer®, Dow®, Noveon®, and BASP®.
  • the particular elastomeric material selected for use in an ECM fiber may depend on a variety of factors including its spinning ability, bondability, the degree of resiliency required of the bonded fiber structure formed from the fiber, and other characteristics related to the use of the bonded fiber structure.
  • a particular elastomeric material may be selected, for example, based on its relative hydrophobicity or hydrophilicity, or based on its compatibility with fluids or other materials expected to interact with the bonded fiber structure.
  • ECM fibers of the invention may be produced using any of several methods, as detailed in co-pending U.S. patent application Ser. No. ______, filed on Mar. 14, 2006 under Attorney Docket Number 61633.001139. Regardless of the method of manufacture, however, specific processing parameters must be tailored to the particular materials used in order to assure that viable fibers are produced. In sheath-core ECM fibers, for example, processing parameters must be tailored to assure complete coverage of the core and to assure that the sheath will remain adhered to the core.
  • ECM fibers and bonded fiber reservoirs without departing from the scope of the invention.
  • fibers, fiber webs and products formed therefrom may require or may be enhanced by, the incorporation of an additive in the fibrous web during manufacture.
  • surfactants or other chemical agents in particular concentrations may be added to the ECM fibers and/or ECM fiber webs to be used in the formation of ink reservoirs for ink jet printer cartridges.
  • These additives may modify the surface characteristics of the ECM fibers to enhance absorptiveness and/or compatibility with particular ink formulations.
  • particulate matter may be adhered to the ECM fibers or ECM fibrous webs in order to produce certain characteristics (e.g., increase absorptiveness).
  • bimodal webs comprising ECM fibers may be formed. Methods of forming such bimodal webs are described in U.S. Pat. No. 6,103,181. Bimodal webs are webs formed from a combination of fibers of different types, materials and/or configurations.
  • a first fiber type may be a sheath-core bicomponent ECM fiber in which the sheath material is an elastomer and the core is a non-elastomer
  • a second fiber type may be an elastomeric or non-elastomeric monocomponent fiber.
  • a web may comprise a first sheath-core bicomponent ECM fiber in which the core material is an elastomer and the sheath may be a non-elastomer, and a second fiber type that may be a monocomponent fiber formed from the same elastomer as the core of the sheath-core bicomponent ECM fiber.
  • the fibrous web may be formed from alternating ECM fibers and multicomponent fibers with no elastomeric component. The bimodal fiber collection from any of these variations can be used to form a bonded web in which fibers of one type serve to bond to each other and to fibers of the other type.
  • the ECM fibers used to form bonded ECM fiber structures may be in the form of bundled individual filaments, continuous filaments, filament tows, rovings of staple fibers, or lightly bonded or mechanically entangled webs or sheets of non-woven staple fibers.
  • the ECM fibers may be mechanically crimped or may be structured so that self-crimping may be induced (e.g., by stretching and then relaxing the fibers) during the continuous forming process.
  • substantially self-sustaining webs formed from ECM fibers may be post-drawn to create more elastic crimps along the machine direction. The additional crimps may help to generate a loftier, bulkier and more elastic substrate.
  • Melt-blown sheath-core bicomponent ECM fibers were formed using a thermoplastic polyurethane (TPU)(Noveon® Estane® 74280) as a sheath material and a polypropylene (PP) (Atofina® PP3860X, 100 melt flow rate (“MFR”)) as a core material.
  • TPU thermoplastic polyurethane
  • PP polypropylene
  • MFR melt flow rate
  • the produced web was passed through a steam forming die and a chilled forming die to form rectangular rods which were then cut to the desired length.
  • the resultant bonded fiber structures were then inserted into ink jet printer cartridges, filled with ink, and tested for ink extraction and resistance to leaking. The testing procedures are discussed above.
  • a matrix evaluating fiber size and reservoir densities was generated. (Table 1).
  • a review of the results in Table 1 shows some embodiments of TPU-based ink reservoirs in accordance with the invention provide ink extraction performance well over 70%.
  • ECM fibers were formed using an elastomeric polypropylene (EPP) material (ExxonMobil® Vistamaxx® 2330) as the sheath material, and a PP material (Atofina® PP3860X) as the core material.
  • EPP elastomeric polypropylene
  • PP material Alignina® PP3860X
  • the ratio of the sheath to core was approximately 30:70 by volume.
  • the sheath and core resins were melt blown at temperatures in a range from 200-290° C., with the die tip at 277° C. Fiber sizes of approximately 9 micron were obtained.
  • the resulting web displayed good bulk and softness.
  • the produced web was then passed through a steam forming die to form rectangular rods which were then cut to the desired length.
  • Table 2 provides relative ink absorption data, illustrating the amount of time required for inks of certain surface tension ( ⁇ ) to be absorbed into the ECM fiber matrix. Values for inks at a series of surface tensions are provided for absorption into non-ECM fiber matrices (polyester sheathed sheath-core bicomponent fibers), sheath-core bicomponent ECM fibers with a hydrophobic TPU sheath material, and sheath-core bicomponent ECM fibers with a hydrophilic TPU sheath material.

Abstract

A bonded fiber ink reservoir, an ink jet printer cartridge containing a bonded fiber reservoir, and a ink jet printer using an ink jet cartridge containing a bonded fiber reservoir are disclosed. The bonded fiber reservoir may comprise a three dimensional bonded fiber structure, wherein the three dimensional bonded fiber structure is comprised of a plurality of fibers bonded to each other at spaced apart points of contact, at least a portion of the fibers being multicomponent fibers having at least one elastomeric fiber component.

Description

  • This application claims priority to U.S. Provisional Application Ser. No. 60/664,032, titled “Elastomeric Bicomponent Fibers and Bonded Structures Formed Therefrom,” filed on Mar. 22, 2005, and U.S. Provisional Application Ser. No. 60/737,342, titled “Ink Reservoirs Formed From Elastomeric Bicomponent Fibers,” filed on Nov. 16, 2005, both of which are incorporated herein by reference in their entirety.
  • BACKGROUND OF THE INVENTION
  • The invention relates generally to the field of multicomponent fibers and bonded fiber structures. More particularly, the invention is directed to three dimensional self-sustaining bonded fiber structures comprised of multicomponent elastomeric fibers. More particularly still, the invention relates to ink reservoirs formed of such three dimensional self-sustaining bonded fiber structures comprised of such elastomeric fibers.
  • Multicomponent fibers are typically manufactured by melt spinning techniques (including conventional melt spinning, melt blowing, spun bond, and other melt spun methods). Multicomponent fibers may be manufactured in a side-by-side structure, a centric sheath-core structure, or an acentric (e.g. self-crimping) sheath-core structure. Such fibers can be used in continuous filament or staple form and/or collected into webs or tows. They may be produced alone or as part of a mixed fiber system. Multicomponent fibers can be used for a variety of purposes, including but not limited to woven and non-woven fabrics or structures and bonded or non-bonded structures.
  • As described in U.S. Pat. Nos. 5,607,766, 5,620,641, 5,633,082, 6,103,181, 6,330,883, 6,814,911, and 6,840,692, each of which is incorporated herein by reference in its entirety, there are many forms of and uses for bonded fiber structures, as well as many methods of manufacture. In general, such bonded fiber structures are formed from tows or webs of thermoplastic fibrous material, where the bonded fiber structure comprises an interconnecting network of highly dispersed fibers bonded to each other at points of contact. These webs are formed into substantially self-sustaining, three-dimensional porous components and structures, which may be produced in a variety of sizes and shapes.
  • Porous, bonded structures formed from multicomponent fibers have demonstrated distinct advantages for fluid storage and fluid manipulation applications, because such bonded fiber structures have been shown to take up liquids of various formulations and controllably release them. A typical use for these structures may include use as nibs for writing instruments, ink reservoirs for writing instruments and/or ink jet printer cartridges, wicks for a wide variety of devices and applications, depth filters, and other applications where the characteristics of such structures are advantageous. Many of the advantageous characteristics of bonded fiber structures stem from the materials used in the fibers from which these structures are formed.
  • The above-referenced patents describe a wide variety of polymer materials that may be used to form fibers for use in three dimensional bonded structures. These structures, however, are often unsuitable for certain applications where resiliency or penetrability is required. Additionally, the ability of these structures to take up liquids of various formulations, hold these liquids during various environmental conditions, and controllably release these liquids is often less than desirable. Accordingly, there is a need for resilient bonded fiber structures that exhibit desirable fluid storage and manipulation characteristics.
  • These characteristics are desirable for ink jet printers. Ink jet printers often use an ink jet print-head mounted within a carriage. As the carriage moves across a media (i.e., paper), the ink jet print-head withdraws ink from an ink reservoir, and deposits the ink appropriately on the media (i.e., in the shape of letters). The ink reservoir is typically contained in an ink jet printer cartridge. The ink jet printer cartridge generally encases the ink reservoir. The ink jet printer cartridge may be disposed on the carriage adjacent to the print-head, or it may be disposed elsewhere in the ink jet printer and may deliver ink to the print-head.
  • Various materials may be used as the ink reservoir. Typical materials include open cell foam, and fibrous structures, such as felt. In selecting a material for the ink reservoir, several characteristics are considered. These characteristics primarily surround the material's fluid manipulation qualities. For example, capillarity strength, surface energy, porosity, leak resistance, resistance to imparting debris or extractibles into the ink, ease of assembly, and ink extraction may be examined.
  • However, these qualities must also be considered in light of various testing conditions. For example, ink jet printer cartridges must not leak during atmospheric pressure changes that may occur during shipping. Additionally, ink jet printer cartridges must not leak during certain impacts, such as if the ink jet printer cartridge is accidentally dropped. Finally, ink jet printer cartridges must deliver as much ink as possible to the print-head, rather than leaving unusable ink stranded in the cartridge.
  • Accordingly, it is desirable to find a material for use in an ink reservoir that retains ink during various environmental conditions, allows the ink to be easily extracted from the ink reservoir, and allows for the extraction of a high percentage of the ink.
  • SUMMARY OF THE INVENTION
  • Aspects of the invention include a bonded fiber ink reservoir, an ink jet printer cartridge containing a bonded fiber reservoir, and an ink jet printer using an ink jet cartridge containing a bonded fiber reservoir. The bonded fiber reservoir may comprise a three dimensional bonded fiber structure, wherein the three dimensional bonded fiber structure is comprised of a plurality of fibers bonded to each other at spaced apart points of contact, at least a portion of the fibers being multicomponent fibers having at least one elastomeric fiber component.
  • It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only, and are not restrictive of the invention as claimed. The accompanying drawings constitute a part of the specification, illustrate certain embodiments of the invention and, together with the detailed description, serve to explain the principles of the invention.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • In order to assist in the understanding of the invention, reference will now be made to the appended drawings, in which like reference characters refer to like elements. The drawings are exemplary only, and should not be construed as limiting the invention.
  • FIG. 1 is an isometric view of an ink jet cartridge, in accordance with some embodiments of the invention.
  • FIG. 2 is a cross-sectional view of an assembled ink jet cartridge, in accordance with some embodiments of the invention.
  • FIG. 3 is a cross-sectional view of a concentric sheath-core multicomponent fiber, used to form three dimensional self-sustaining bonded fiber structures, in accordance with some embodiments of the invention.
  • FIG. 4 is a cross-sectional view of an acentric sheath-core multicomponent fiber, used to form three dimensional self-sustaining bonded fiber structures, in accordance with some embodiments of the invention.
  • FIG. 5 is a cross-sectional view of a side-by-side multicomponent fiber, used to form three dimensional self-sustaining bonded fiber structures, in accordance with some embodiments of the invention.
  • FIG. 6 is a cross-sectional view of a multicomponent fiber, used to form three dimensional self-sustaining bonded fiber structures, in accordance with some embodiments of the invention.
  • FIG. 7 is a cross-sectional view of a multicomponent fiber, used to form three dimensional self-sustaining bonded fiber structures, in accordance with some embodiments of the invention.
  • DETAILED DESCRIPTION OF THE INVENTION
  • Embodiments of the present invention provide multicomponent fibers having one or more elastomeric components that can be used to form resilient bonded fiber structures. As used herein, the term “multicomponent fiber” refers to a fiber having two or more distinct components integrally formed from polymer materials having different characteristics and/or different chemical nature. Bicomponent fibers are a particular type of multicomponent fiber. As used herein, the term “bicomponent fiber” refers to a fiber having two distinct components integrally formed from polymer materials having different characteristics and/or different chemical nature. While other forms of bicomponent fiber are possible, the most common types are formed with “side-by-side” or “sheath-core” relationships between the two polymer components. For example, bicomponent fibers comprising a core of one polymer and a coating or sheath of a different polymer are particularly desirable for many applications since the core material may be relatively inexpensive, providing the fiber with bulk and strength, while a relatively thin outer component of a more expensive but unique sheath material may provide the fiber with unique properties, particularly with respect to bonding.
  • As used herein, the term “elastomeric component multicomponent fiber” or “ECM fiber” means a multicomponent fiber having at least one component comprising an elastomeric material. The term “elastomeric component bicomponent fiber” means a bicomponent fiber having at least one component comprising an elastomeric material. As used herein the term “elastomeric material” refers to a macromolecular material that returns rapidly to its initial dimensions and shape after substantial deformation and release of stress.
  • As used herein, the term “fluid” means a substance whose molecules move freely past one another, including but not limited to a liquid or gas. The term “fluid” as used herein may also be multi-phase, and may include particulate matter suspended in a liquid or gas.
  • Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings.
  • A particular application of three dimensional self-sustaining bonded fiber structures comprised of ECM fibers may be as an ink jet reservoir. Ink jet reservoirs made with ECM fibers have demonstrated several beneficial properties. For example, an ink jet cartridge using a reservoir according to embodiments of the invention has been shown to be resistant to leakage and has unexpectedly demonstrated a high degree of ink-release from the cartridge. Test data have indicated that reservoirs formed from ECM fibers may be used with a wide variety of ink formulations. Further, the specific chemistry of the ECM fibers used, including any finishes, may be tailored to provide a particular surface energy corresponding to the specific ink formulation with which they will be used.
  • Ink reservoirs comprised of bonded ECM fibers may be resilient, or resistant to taking a compressive set, and may therefore provide a material which has a high degree of conformance to the interior structure of an ink jet reservoir cartridge. This increased conformance may allow the reservoir to maintain contact with other ink conduit elements inside the cartridge. Maintaining contact to other such elements under severe environmental conditions (e.g., thermal shock, physical shock or vibration, repeated removal and loading of the cartridge from the printer, etc.) may reduce the likelihood of failure of the cartridge.
  • Ink reservoirs comprised of bonded ECM fibers, in accordance with some embodiments of the invention may also exhibit properties that assist in easier refilling. For example, the bonded fiber structure reservoir may be penetrated with a large filling needle, and may reseal when the needle is withdrawn. This may facilitate a more rapid filling that is conventionally achieved with standard, non-resilient fiber-based reservoirs.
  • With reference to FIGS. 1 and 2, an ink jet printer cartridge 10 in accordance with some embodiments of the invention will now be described. The ink jet printer cartridge 10, may be generally comprised of a housing 100 and a reservoir 200.
  • Ink jet housing 100 and associated reservoirs may be generally rectangular in shape, typically with 90 degree angles on all sides. The dimensions of the cartridge can typically range from less than 5 millimeters to 100 millimeters. A series of design considerations are often employed, which may include designing a cartridge which can hold 6 or more reservoirs and which will fit into typical ink jet printer designs. Non-rectangular shapes may also be employed, in which case, the reservoir(s) may be shaped accordingly.
  • The housing 100 may comprise an air vent 110, a fluid outlet 120, and stand-offs or baffles 130. The air vent 110 may generally be disposed on the top surface of the housing 100, and may allow air to vent into the housing 100, thereby allowing the even flow of ink out of the housing 100. A void 111 may exist near the air vent 110, which may be used to contain ink that may flow out of the reservoir 200 due to environmental conditions. Additionally, the air vent 110 may be used, in certain types of ink jet printer cartridges, to fill the ink jet printer cartridge with ink during assembly.
  • The fluid outlet 120 may be disposed on the bottom of the housing 100. The fluid outlet may contact a printer head or other device which may draw ink from the housing 100. The outlet may contain a wick, which may draw the ink from the reservoir 200 via increased capillary strength. The stand-offs or baffles 130 may be shoulders or other detents integral to the housing, which may hold the reservoir 200 in a particular location.
  • The reservoir 200 may be comprised of a porous, three dimensional, self-sustaining bonded fiber structure formed from ECM fibers 210. The bonded fiber structure reservoir 200 may have a certain capillary pressure that keeps ink inside the reservoir until drawn from the reservoir by either a print head pump or a higher capillary pressure wick. Additionally, the ink reservoir 200 may be designed to have enough capillary force to inhibit leakage as a result of mechanical shock or changes in atmospheric pressure.
  • The bonded fiber ink reservoir 200 may be cut to dimensions suitable for the housing 100. These dimensions may be slightly oversized, in order to ensure a press-fit of the reservoir 200 in the housing 100. The network of ECM fibers 210 that comprise the reservoir 200 retains and stores various formulations of ink through the ECM fiber's capillarity characteristics.
  • The methods of manufacture of ECM fibers and of three dimensional self-sustaining bonded fiber structures formed from ECM fibers are thoroughly discussed in Applicant's copending application, assigned Ser. No. ______ , filed on Mar. 14, 2006 under Attorney Docket Number 61633.001139, which is incorporated herein by reference in its entirety.
  • ECM fibers that may be used in some embodiments of the invention include (i) sheath-core multicomponent fibers where the sheath is comprised of an elastomeric material and the core is comprised of a non-elastic material; (ii) sheath-core multicomponent fiber where the sheath and the core are both comprised of elastomeric materials with the core material different physical and/or thermal characteristics from the sheath material; (iii) melt blown side-by-side bicomponent fibers, where one component is comprised of an elastomeric material; and (iv) melt blown side-by-side bicomponent fibers, where both components are comprised of elastomeric materials, and one component has different physical and/or thermal characteristics from the other.
  • With reference to FIGS. 3-7, various examples of ECM fiber embodiments according to the invention will now be discussed in more detail.
  • FIG. 3 illustrates an exemplary ECM fiber of the invention. In this embodiment, the fiber is formed as a sheath-core bicomponent fiber 300 having a core component 310 surrounded by a sheath component 320, wherein the sheath component comprises a thermoplastic elastomer. The use of an elastomer as the sheath component 320 is particularly advantageous in that elastomeric materials generally bond easily to one another and to other fiber materials. When bonded, the core component 310 of the sheath-core bicomponent ECM fiber 300 may provide strength and stability to the fiber, while the elastomeric sheath component 320 may allow the sheath-core bicomponent ECM fiber 300 to stretch relative to other fibers to which it is bonded. This stretchable bond may provide a resiliency to the bonded structure that is not attainable using conventional sheath-core fibers.
  • The sheath-to-core ratio of ECM fibers of the invention may be tailored depending on the particular materials, the application of the fibers, and the method of manufacture. Typical sheath-to-core volume ratios may be in a range from 10:90 to 90:10. In particular embodiments, the sheath-to-core volume ratio range from 25:75 to 40:60.
  • With continued reference to FIG. 3, the sheath-core bicomponent ECM fiber 300 is a concentric sheath-core fiber; that is, the sheath and core have substantially concentric circular cross-sections. Other ECM fibers according to the invention may be formed as acentric sheath core fibers as exemplified by the acentric sheath-core ECM fiber 400 shown in FIG. 4. The acentric sheath-core ECM fiber 400 has a sheath component 420 that comprises an elastomeric material and a core component 410. In this fiber, the sheath and core components may be substantially circular in cross-section, but with offset centers. This acentric geometry may be used to produce a self-crimping fiber, which may facilitate the production of a loftier, bulkier, and more elastic web.
  • Melt-blown ECM fibers according to the invention may also be formed in a side-by-side configuration, as exemplified by the side-by-side ECM fiber 500 shown in FIG. 5. Like the sheath-core bicomponent ECM fiber 300, the side-by-side ECM fiber 500 has a first component 510 that comprises an elastomer and a second component 530. The side-by-side configuration assures that at least a portion of the surface of an elastomeric component 510 is exposed for bonding with other fibers.
  • ECM fibers of the invention are not limited to bicomponent fibers. For example, FIG. 6 illustrates a multicomponent ECM fiber 600 according to the invention that has three components 610, 620, 630, any one or more of which may comprise an elastomeric material.
  • ECM sheath-core fibers may also be produced with more than two components. With reference to FIG. 7, a multicomponent sheath-core ECM fiber 700 may be comprised of a sheath component 730 that comprises an elastomeric material, an intermediate component 720, and a core component 710. Similar fibers may be produced with acentric geometries.
  • The core components 310, 410, 710 of sheath- core ECM fibers 300, 400, 700, the second component 510 of the side-by-side ECM fiber 500, and the second and third components 620, 630 of the side-by-side ECM fiber 600 may be non-elastomeric or may comprise elastomeric materials having different material and/or thermal characteristics from the elastomeric materials of the first fiber components 320, 420, 530, 620, 630 and 730. In some embodiments, core components 310, 410, 710 and side-by- side components 530, 620, 630 may comprise a crystalline or semi-crystalline polymer. Such polymers may include, but are not limited to: polypropylene, polybutylene terephthalate, polyethylene terephthalate, high density polyethylene and polyamides such as nylon 6 and nylon 66.
  • The various elastomeric components of the ECM fibers of the invention may comprise any suitable elastomeric material. Suitable thermoplastic elastomers may include, but are not limited to: polyurethanes, polyester copolymers, styrene copolymers, olefin copolymers, or any combination of these materials. More particularly, thermoplastic polyurethanes, thermoplastic ureas, elastomeric or plastomeric polypropylenes, styrene-butadiene copolymers, polyisoprene, polyisobutylene, polychloroprene, butadiene-acrylonitrile, elastomeric block olefinic copolymers (such as styrene-isoprene-styrene), elastomeric block co-polyether polyamides, elastomeric block copolyesters, and elastomeric silicones may be used.
  • Of these elastomeric materials, thermoplastic polyurethanes have been shown to be particularly suitable for producing ECM fibers for use in bonded fiber structures. As used herein, the term “thermoplastic polyurethane” or “TPU” encompasses a linear segmented block polymer composed of soft and hard segments, wherein the hard segments are either aromatic or aliphatic and the soft segments are either linear polyethers or polyesters. The defining chemicals of TPUs are diisocyanates, which react with short chain diols to form a linear hard polymer block. Aromatic hard segment blocks are usually based in aromatic diisocyanates, most commonly MDI (4,4′-Diphenylmethane diisocyanate). Aliphatic hard segment blocks are usually based in aliphatic diisocyanates, most commonly hydrogenated MDI (H12MDI). Linear polyether soft segment blocks commonly used include poly(butylene oxide) diols, poly(ethylene oxide) diols and poly(propylene oxide) diols or products of reactions of different glycols. Linear polyester soft segment bocks commonly used include the polycondensation product of adipic acid and short carbon-chain glycols. Polycaprolactones may also be used. Thermoplastic polyurethanes are commercially available from suppliers such as DuPont®, Bayer®, Dow®, Noveon®, and BASP®.
  • The particular elastomeric material selected for use in an ECM fiber may depend on a variety of factors including its spinning ability, bondability, the degree of resiliency required of the bonded fiber structure formed from the fiber, and other characteristics related to the use of the bonded fiber structure. A particular elastomeric material may be selected, for example, based on its relative hydrophobicity or hydrophilicity, or based on its compatibility with fluids or other materials expected to interact with the bonded fiber structure.
  • With any of the above-described ECM fiber embodiments 300, 400, 500, 600, 700, care must be taken to assure that fiber integrity is maintained throughout the manufacturing process. ECM fibers of the invention may be produced using any of several methods, as detailed in co-pending U.S. patent application Ser. No. ______, filed on Mar. 14, 2006 under Attorney Docket Number 61633.001139. Regardless of the method of manufacture, however, specific processing parameters must be tailored to the particular materials used in order to assure that viable fibers are produced. In sheath-core ECM fibers, for example, processing parameters must be tailored to assure complete coverage of the core and to assure that the sheath will remain adhered to the core.
  • Variations and modifications can be made to the ECM fibers and bonded fiber reservoirs without departing from the scope of the invention. For example, as described in U.S. Pat. No. 6,814,911, fibers, fiber webs and products formed therefrom may require or may be enhanced by, the incorporation of an additive in the fibrous web during manufacture. Accordingly, surfactants or other chemical agents in particular concentrations may be added to the ECM fibers and/or ECM fiber webs to be used in the formation of ink reservoirs for ink jet printer cartridges. These additives may modify the surface characteristics of the ECM fibers to enhance absorptiveness and/or compatibility with particular ink formulations. Similarly, particulate matter may be adhered to the ECM fibers or ECM fibrous webs in order to produce certain characteristics (e.g., increase absorptiveness).
  • Additionally, bimodal webs comprising ECM fibers may be formed. Methods of forming such bimodal webs are described in U.S. Pat. No. 6,103,181. Bimodal webs are webs formed from a combination of fibers of different types, materials and/or configurations. For example, a first fiber type may be a sheath-core bicomponent ECM fiber in which the sheath material is an elastomer and the core is a non-elastomer, and a second fiber type may be an elastomeric or non-elastomeric monocomponent fiber. In some embodiments, a web may comprise a first sheath-core bicomponent ECM fiber in which the core material is an elastomer and the sheath may be a non-elastomer, and a second fiber type that may be a monocomponent fiber formed from the same elastomer as the core of the sheath-core bicomponent ECM fiber. In some embodiments, the fibrous web may be formed from alternating ECM fibers and multicomponent fibers with no elastomeric component. The bimodal fiber collection from any of these variations can be used to form a bonded web in which fibers of one type serve to bond to each other and to fibers of the other type.
  • It is contemplated that the ECM fibers used to form bonded ECM fiber structures may be in the form of bundled individual filaments, continuous filaments, filament tows, rovings of staple fibers, or lightly bonded or mechanically entangled webs or sheets of non-woven staple fibers. The ECM fibers may be mechanically crimped or may be structured so that self-crimping may be induced (e.g., by stretching and then relaxing the fibers) during the continuous forming process. Additionally, in some embodiments, substantially self-sustaining webs formed from ECM fibers may be post-drawn to create more elastic crimps along the machine direction. The additional crimps may help to generate a loftier, bulkier and more elastic substrate.
  • Testing Procedures
  • The ink leakage and ink extraction properties of some embodiments of ink reservoirs in accordance with the invention were determined by the following testing procedures:
  • Leak Testing Procedure
    • 1. Bonded ECM fiber reservoirs were placed in ink jet printer cartridges, and the reservoirs were loaded with 13.5 g of ink. Thirty (30) minutes were allowed for the ink to equilibrate in the cartridges.
    • 2. After the ink equilibrated in the cartridges, the cartridges were then dropped onto a hard surface from a height of approximately 1 meter on each face of the cartridge, for a total of six drops per cartridge. The cartridges were then checked for leakage. Any loss of ink from the reservoir and cartridge qualified as a failure.
    • 3. If the cartridges passed the leakage drop test, the cartridges were then subjected to vacuum leak testing. The cartridges were placed in a vacuum chamber with the cartridge tops facing downward and tested for leakage in the following manner:
      • a. The vacuum in the vacuum chamber was increased from 0.0 to 9.5 in Hg over 1 minute. This vacuum pressure was held for 2 minutes.
      • b. The vacuum in vacuum chamber was then increased from 9.5 to 12.5 in Hg over 1 minute. This pressure was held for 2 minutes.
    • 4. The vacuum was released and the cartridges were then removed from the vacuum chamber and checked for any evidence of leakage. Any visible loss of ink from the cartridge qualified as a failure.
      Ink Extraction Testing Procedure
    • 1. Bonded ECM fiber reservoirs were placed in ink jet printer cartridges, and the reservoirs were loaded with 13.5 g of ink. Thirty (30) minutes were allowed for the ink to equilibrate in the cartridges.
    • 2. After the ink equilibrated in the cartridges, the initial mass of the cartridge was recorded.
    • 3. The cartridges were then placed in an ink extraction instrument, and ink was extracted as follows:
      • a. Ink was extracted at a rate of 2 mL/minute until a total of 4 mL was extracted.
      • b. Ink was then extracted at a rate of 1 mL/minute until a cumulative total of 5 mL was extracted.
      • c. Ink was then extracted at a rate of 0.5 mL/minute until a cumulative total of 5.5 mL was extracted.
      • d. Ink was then extracted at a rate of 0.25 mL/minute until 8 in. H2O of backpressure was reached.
    • 4. After the ink was extracted from the cartridge, the final mass of the cartridge was recorded. Using the difference between the final mass and the initial mass, the extraction efficiency of the cartridge and reservoir were determined.
    EXAMPLES
  • 1) Ink Jet Printer Reservoirs Made From Melt-Blown Thermoplastic Polyurethane (TPU)/Polypropylene (PP) Sheath-Core Fibers
  • Melt-blown sheath-core bicomponent ECM fibers were formed using a thermoplastic polyurethane (TPU)(Noveon® Estane® 74280) as a sheath material and a polypropylene (PP) (Atofina® PP3860X, 100 melt flow rate (“MFR”)) as a core material. The TPU was initially dried for 4 hours at 60° C. The sheath and core resins were melt-blown at temperatures ranging from 180°-245° C., with the die tip at 168° C. The ratio of TPU sheath material to PP core material was approximately 30:70 by volume. The resulting web displayed good bulk and softness. The produced web was passed through a steam forming die and a chilled forming die to form rectangular rods which were then cut to the desired length. The resultant bonded fiber structures were then inserted into ink jet printer cartridges, filled with ink, and tested for ink extraction and resistance to leaking. The testing procedures are discussed above. A matrix evaluating fiber size and reservoir densities was generated. (Table 1). A review of the results in Table 1 shows some embodiments of TPU-based ink reservoirs in accordance with the invention provide ink extraction performance well over 70%.
  • 2) Ink Jet Printer Reservoirs Made From Melt-Blown Elastomeric Polypropylene (EPP)/Polypropvlene (PP) Sheath-Core Fibers
  • Melt-blown sheath-core bicomponent ECM fibers were formed using an elastomeric polypropylene (EPP) material (ExxonMobil® Vistamaxx® 2330) as the sheath material, and a PP material (Atofina® PP3860X) as the core material. The ratio of the sheath to core was approximately 30:70 by volume. The sheath and core resins were melt blown at temperatures in a range from 200-290° C., with the die tip at 277° C. Fiber sizes of approximately 9 micron were obtained. The resulting web displayed good bulk and softness. The produced web was then passed through a steam forming die to form rectangular rods which were then cut to the desired length. The resultant bonded fiber structures were then inserted into ink jet printer cartridges, filled with ink, and tested for ink extraction and resistance to leaking. The testing procedures are discussed above.
    TABLE 1
    Material
    (sheath- Reservoir Extraction (%) Initial Back
    core) Fiber Size Density Cyan ink, (γ) Pressure Leaks
    (30/70) (micron) (g/cc) 30 dyne/cm (in water) (yes/no)
    PET/PP 14.6 0.135 63.6 2.3 No
    EPP/PP 9.0 0.131 54.0 5.8 No
    EPP/PP 9.0 0.101 57.6 4.9 No
    TPU/PP 14.6 0.160 75.3% 1.3 No
    TPU/PP 14.6 0.127 74.1% 0.9 No
    TPU/PP 13.4 0.132 69.6% 1.9 No
    TPU/PP 13.4 0.145 66.1% 2 No
    TPU/PP 13.4 0.183 62.3% 2.5 No
    TPU/PP 10.5 0.132 69.9% 2.3 No
    TPU/PP 10.5 0.160 65.5% 2.7 No
    TPU/PP 10.5 0.186 58.9% 3.5 No
    TPU/PP 26.7 0.105 77.1% 0.1 Yes
    TPU/PP 26.7 0.132 76.7% 0.3 Yes
    TPU/PP 26.7 0.161 72.1% 0.9 Yes
    TPU/PP 26.7 0.183 67.6% 0.8 Yes
    TPU/PP 18.0 0.136 73.8% 1 Yes
    TPU/PP 18.0 0.161 71.3% 1.2 Yes
    TPU/PP 18.0 0.186 67.3% 1.6 No
  • Table 2 provides relative ink absorption data, illustrating the amount of time required for inks of certain surface tension (γ) to be absorbed into the ECM fiber matrix. Values for inks at a series of surface tensions are provided for absorption into non-ECM fiber matrices (polyester sheathed sheath-core bicomponent fibers), sheath-core bicomponent ECM fibers with a hydrophobic TPU sheath material, and sheath-core bicomponent ECM fibers with a hydrophilic TPU sheath material.
    TABLE 2
    INK ABSORPTION DATA
    Ink Drop* (sec.)
    HP 14 Formulabs Formulabs
    Reservoir Characteristics Cyan Lexmark Lexmark Canon Canon
    Fiber Reservoir Surface 12A1970 12A1912 BCI-21 BCI-21
    Size Density tension (γ) HP 14 Black Black Magenta Cyan Black
    Fiber Type (mm) (g/cc) 30 dyne/cm γ 35 dyne/cm γ >42 dyne/cm γ 37 dyne/cm γ 35 dyne/cm γ 42.5 dyne/cm
    TPU Estane 11 0.168 1 1 35 1 1 2.5
    58245/PP
    Hydrophilic
    TPU Estane 15 0.155 1 >120 >120 40 1 >120
    74280/PP
    Hydrophobic
    PET/PP 15 0.14 1 1 5 1 1 1

    *“Ink drop” is the rate of absorption of a drop of ink into the cut end of the fiber matrix. A smaller number means faster absorption.
  • It will be apparent to those skilled in the art that various modifications and variations can be made in the method, manufacture, configuration, and/or use of the present invention without departing from the scope or spirit of the invention.

Claims (28)

1. An ink reservoir, comprising a three dimensional bonded fiber structure, wherein the three dimensional bonded fiber structure is comprised of a plurality of fibers bonded to each other at spaced apart points of contact, at least a portion of the fibers being multicomponent fibers having at least one elastomeric fiber component.
2. The ink reservoir of claim 1, wherein the at least one elastomeric fiber component comprises a thermoplastic polyurethane.
3. The ink reservoir of claim 1, wherein the at least one elastomeric fiber component comprises a material selected from the group consisting of elastomeric and plastomeric polypropylenes, styrene-butadiene copolymers, polyisoprene, polyisobutylene, polychloroprene, butadiene-acrylonitrile, elastomeric block olefinic copolymers, elastomeric block co-polyether polyamides, elastomeric block copolyesters, poly(ether-urethane-urea), poly(ester-urethane-urea), and elastomeric silicones.
4. The ink reservoir of claim 1, wherein the multicomponent fibers are multicomponent fibers comprising:
a thermoplastic polymer core material; and
an elastomeric polymer sheath material surrounding the core material.
5. The ink reservoir of claim 4, wherein the elastomeric polymer sheath material comprises a thermoplastic polyurethane.
6. The ink reservoir of claim 4, wherein the thermoplastic core material comprises a second elastomeric material different from the elastomeric polymer sheath material.
7. The ink reservoir of claim 4, wherein the thermoplastic core material is selected from the group consisting of polyethylene, polypropylene, nylon, polyester, polybutylene terephthalate, and polyethylene terephthalate.
8. The ink reservoir of claim 1, wherein the multicomponent fibers are melt-blown side-by-side bicomponent fibers.
9. The ink reservoir of claim 1, wherein the three dimensional bonded fiber structure has at least one dimension along which the structure can be elongating at least 200% while retaining its structural integrity.
10. The ink reservoir of claim 1, wherein the fibers have a diameter in a range from about 1 micron to about 200 microns.
11. The ink reservoir of claim 1, wherein the fibers have a diameter in a range from about 1 micron to about 25 microns.
12. The ink reservoir of claim 1, wherein the fibers comprise materials that are selected, at least in part, for their compatibility with a particular ink formulation.
13. The ink reservoir of claim 1, wherein the bonded fiber structure is adapted to take up, hold, and controllably release a particular ink formulation.
14. An ink jet printer cartridge, comprising:
a housing, defining a reservoir cavity; and
a reservoir, disposed within the reservoir cavity, the reservoir comprising a three dimensional bonded fiber structure, wherein the three dimensional bonded fiber structure is comprised of a plurality of fibers bonded to each other at spaced apart points of contact, at least a portion of the fibers being multicomponent fibers having at least one elastomeric fiber component.
15. The ink jet printer cartridge of claim 14, wherein the at least one elastomeric fiber component comprises a thermoplastic polyurethane.
16. The ink jet printer cartridge of claim 14, wherein the at least one elastomeric fiber component comprises a material selected from the group consisting of elastomeric and plastomeric polypropylenes, styrene-butadiene copolymers, polyisoprene, polyisobutylene, polychloroprene, butadiene-acrylonitrile, elastomeric block olefinic copolymers, elastomeric block co-polyether polyamides, elastomeric block copolyesters, poly(ether-urethane-urea), poly(ester-urethane-urea), and elastomeric silicones.
17. The ink jet printer cartridge of claim 14, wherein the multicomponent fibers are multicomponent fibers comprising:
a thermoplastic polymer core material; and
an elastomeric polymer sheath material surrounding the core material.
18. The ink jet printer cartridge of claim 17, wherein the elastomeric polymer sheath material comprises a thermoplastic polyurethane.
19. The ink jet printer cartridge of claim 17, wherein the thermoplastic core material comprises a second elastomeric material different from the elastomeric polymer sheath material.
20. The ink jet printer cartridge of claim 17, wherein the thermoplastic core material is selected from the group consisting of polyethylene, polypropylene, nylon, polyester, polybutylene terephthalate, and polyethylene terephthalate.
21. The ink jet printer cartridge of claim 14, wherein the multicomponent fibers are melt-blown side-by-side bicomponent fibers.
22. The ink jet printer cartridge of claim 14, wherein the three dimensional bonded fiber structure has at least one dimension along which the structure can be elongating at least 200% while retaining its structural integrity.
23. The ink jet printer cartridge of claim 14, wherein the fibers have a diameter in a range from about 1 micron to about 200 microns.
24. The ink jet printer cartridge of claim 14, wherein the fibers have a diameter in a range from about 1 micron to about 25 microns.
25. The ink jet printer cartridge of claim 14, wherein the fibers comprise materials that are selected, at least in part, for their compatibility with a particular ink formulation.
26. The ink jet printer cartridge of claim 14, wherein the bonded fiber structure is adapted to take up, hold, and controllably release a particular ink formulation.
27. An ink jet printer, comprising:
a carriage;
a print-head mounted on the carriage; and
an ink jet printer cartridge associated with the print-head, such that the ink jet printer cartridge provides the print-head with ink, and wherein the ink jet printer cartridge comprises an ink reservoir formed from a plurality of fibers bonded to each other at spaced apart points of contact, at least a portion of the fibers being multicomponent fibers having at least one elastomeric fiber component.
28. The ink jet printer of claim 27, wherein the multicomponent fibers are multicomponent fibers comprising:
a thermoplastic polymer core material; and
an elastomeric polymer sheath material surrounding the core material.
US11/378,065 2005-03-22 2006-03-17 Bonded structures formed form multicomponent fibers having elastomeric components for use as ink reservoirs Abandoned US20060216491A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US11/378,065 US20060216491A1 (en) 2005-03-22 2006-03-17 Bonded structures formed form multicomponent fibers having elastomeric components for use as ink reservoirs
JP2008503055A JP2008535685A (en) 2005-03-22 2006-03-20 Bonding structure formed from multicomponent fibers having an elastomeric component for use as an ink reservoir
PCT/US2006/009825 WO2006102136A2 (en) 2005-03-22 2006-03-20 Bonded structures formed from multicomponent fibers having elastomeric components for use as ink reservoirs
EP06738831A EP1863646A2 (en) 2005-03-22 2006-03-20 Bonded structures formed from multicomponent fibers having elastomeric components for use as ink reservoirs

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US66403205P 2005-03-22 2005-03-22
US73734205P 2005-11-16 2005-11-16
US11/378,065 US20060216491A1 (en) 2005-03-22 2006-03-17 Bonded structures formed form multicomponent fibers having elastomeric components for use as ink reservoirs

Publications (1)

Publication Number Publication Date
US20060216491A1 true US20060216491A1 (en) 2006-09-28

Family

ID=37024445

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/378,065 Abandoned US20060216491A1 (en) 2005-03-22 2006-03-17 Bonded structures formed form multicomponent fibers having elastomeric components for use as ink reservoirs

Country Status (4)

Country Link
US (1) US20060216491A1 (en)
EP (1) EP1863646A2 (en)
JP (1) JP2008535685A (en)
WO (1) WO2006102136A2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080187751A1 (en) * 2007-02-02 2008-08-07 Ward Bennett C Porous Reservoirs Formed From Side-By-Side Bicomponent Fibers
US9221597B2 (en) 2012-06-12 2015-12-29 Hewlett-Packard Development Company, L.P. Interconnect membrane
WO2021201820A1 (en) * 2020-03-30 2021-10-07 Hewlett-Packard Development Company, L.P. Electrically conductive structures
WO2021211129A1 (en) * 2020-04-16 2021-10-21 Hewlett-Packard Development Company, L.P. Conductive connections
US20220160037A1 (en) * 2014-03-27 2022-05-26 Essentra Filter Products Development Co. Pte. Ltd Smoking article

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5676457B2 (en) * 2008-10-17 2015-02-25 インヴィスタ テクノロジーズ エスアエルエル 2 component spandex

Citations (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243413A (en) * 1962-10-18 1966-03-29 Eastman Kodak Co Elastomeric polyesters synthesized from copolyethers
US3533416A (en) * 1968-05-08 1970-10-13 American Filtrona Corp Tobacco smoke filter
US3595245A (en) * 1968-08-14 1971-07-27 Exxon Research Engineering Co Cigarette filter from polypropylene fibers
US3599646A (en) * 1969-04-30 1971-08-17 American Filtrona Corp Cigarette filter
US3615995A (en) * 1968-08-14 1971-10-26 Exxon Research Engineering Co Method for producing a melt blown roving
US3637447A (en) * 1970-06-10 1972-01-25 American Filtrona Corp Method of making filter means by crimping and overwrapping a tubular element
US3703429A (en) * 1968-05-08 1972-11-21 American Filtrona Corp Apparatus for making filter means
US3972759A (en) * 1972-06-29 1976-08-03 Exxon Research And Engineering Company Battery separators made from polymeric fibers
US4106313A (en) * 1968-11-06 1978-08-15 Monsanto Company Sheer stretch hose having high compressive force uniformity, and yarn
US4324580A (en) * 1972-06-06 1982-04-13 Ciba-Geigy Corporation Herbicidal and plant growth inhibiting agent
US4390687A (en) * 1981-09-21 1983-06-28 The Goodyear Tire & Rubber Company High melt strength elastometric copolyesters
US5607766A (en) * 1993-03-30 1997-03-04 American Filtrona Corporation Polyethylene terephthalate sheath/thermoplastic polymer core bicomponent fibers, method of making same and products formed therefrom
US5733825A (en) * 1996-11-27 1998-03-31 Minnesota Mining And Manufacturing Company Undrawn tough durably melt-bondable macrodenier thermoplastic multicomponent filaments
US5845652A (en) * 1995-06-06 1998-12-08 Tseng; Mingchih M. Dental floss
US6080482A (en) * 1995-05-25 2000-06-27 Minnesota Mining And Manufacturing Company Undrawn, tough, durably melt-bondable, macodenier, thermoplastic, multicomponent filaments
US6103181A (en) * 1999-02-17 2000-08-15 Filtrona International Limited Method and apparatus for spinning a web of mixed fibers, and products produced therefrom
US6225243B1 (en) * 1998-08-03 2001-05-01 Bba Nonwovens Simpsonville, Inc. Elastic nonwoven fabric prepared from bi-component filaments
US6234618B1 (en) * 1995-11-02 2001-05-22 Canon Kabushiki Kaisha Ink absorbing body, ink tank, ink-jet cartridge and ink-jet printing apparatus
US6248445B1 (en) * 1989-01-12 2001-06-19 Kanebo, Ltd. Composite filament yarn and process and spinneret for manufacturing the same
US20010009432A1 (en) * 1999-10-29 2001-07-26 David Olsen Ink reservoir for an inkjet printer
US6270206B1 (en) * 1997-07-30 2001-08-07 Canon Kabushiki Kaisha Ink container having blocking member and boundary layer
US6330883B1 (en) * 1999-02-17 2001-12-18 Filtrona Richmond, Inc. Heat and moisture exchanger comprising hydrophilic nylon and methods of using same
US6394591B1 (en) * 1994-07-06 2002-05-28 Canon Kabushiki Kaisha Ink container
US6402306B1 (en) * 2000-07-28 2002-06-11 Hewlett-Packard Company Method and apparatus for refilling an ink container
US6419350B1 (en) * 1999-08-30 2002-07-16 Canon Kabushiki Kaisha Ink tank, recording head cartridge and ink jet recording apparatus
US6465094B1 (en) * 2000-09-21 2002-10-15 Fiber Innovation Technology, Inc. Composite fiber construction
US20030039833A1 (en) * 2001-07-17 2003-02-27 Ashish Sen Elastic bicomponent and biconstituent fibers, and methods of making cellulosic structures from the same
US20040008853A1 (en) * 1999-07-20 2004-01-15 Sri International, A California Corporation Electroactive polymer devices for moving fluid
US20040041307A1 (en) * 2002-08-30 2004-03-04 Kimberly-Clark Worldwide, Inc. Method of forming a 3-dimensional fiber into a web
US20040041308A1 (en) * 2002-08-30 2004-03-04 Kimberly-Clark Worldwide, Inc. Method of making a web which is extensible in at least one direction
US6723699B1 (en) * 1989-06-05 2004-04-20 Cephalon, Inc. Treating disorders by application of insulin-like growth factors and analogs
US6814911B2 (en) * 2002-04-03 2004-11-09 Filtrona Richmond, Inc. Method and apparatus for applying additive to fibrous products and products produced thereby
US6840692B2 (en) * 2002-04-10 2005-01-11 Filtrona Richmond, Inc. Method and apparatus for making NIBS and ink reservoirs for writing and marking instruments and the resultant products
US20050244638A1 (en) * 2004-03-19 2005-11-03 Chang Andy C Propylene-based copolymers, a method of making the fibers and articles made from the fibers
US20060084342A1 (en) * 2002-10-24 2006-04-20 BBA Nonwovens Simpsonville, Elastomeric multicomponent fibers, nonwoven webs and nonwoven fabrics

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03241013A (en) * 1990-02-15 1991-10-28 Kanebo Ltd Heat-resistant conjugate elastic yarn having improved light-resistance
JPH10325059A (en) * 1997-05-27 1998-12-08 Japan Vilene Co Ltd Nonwoven fabric and its production
DE60008777T2 (en) * 1999-10-29 2005-01-27 Hewlett-Packard Company, Palo Alto METHOD FOR PRODUCING AN INK CONTAINER FOR AN INK JET PRINTER

Patent Citations (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243413A (en) * 1962-10-18 1966-03-29 Eastman Kodak Co Elastomeric polyesters synthesized from copolyethers
US3533416A (en) * 1968-05-08 1970-10-13 American Filtrona Corp Tobacco smoke filter
US3703429A (en) * 1968-05-08 1972-11-21 American Filtrona Corp Apparatus for making filter means
US3595245A (en) * 1968-08-14 1971-07-27 Exxon Research Engineering Co Cigarette filter from polypropylene fibers
US3615995A (en) * 1968-08-14 1971-10-26 Exxon Research Engineering Co Method for producing a melt blown roving
US4106313A (en) * 1968-11-06 1978-08-15 Monsanto Company Sheer stretch hose having high compressive force uniformity, and yarn
US3599646A (en) * 1969-04-30 1971-08-17 American Filtrona Corp Cigarette filter
US3637447A (en) * 1970-06-10 1972-01-25 American Filtrona Corp Method of making filter means by crimping and overwrapping a tubular element
US4324580A (en) * 1972-06-06 1982-04-13 Ciba-Geigy Corporation Herbicidal and plant growth inhibiting agent
US3972759A (en) * 1972-06-29 1976-08-03 Exxon Research And Engineering Company Battery separators made from polymeric fibers
US4390687A (en) * 1981-09-21 1983-06-28 The Goodyear Tire & Rubber Company High melt strength elastometric copolyesters
US6248445B1 (en) * 1989-01-12 2001-06-19 Kanebo, Ltd. Composite filament yarn and process and spinneret for manufacturing the same
US6723699B1 (en) * 1989-06-05 2004-04-20 Cephalon, Inc. Treating disorders by application of insulin-like growth factors and analogs
US5607766A (en) * 1993-03-30 1997-03-04 American Filtrona Corporation Polyethylene terephthalate sheath/thermoplastic polymer core bicomponent fibers, method of making same and products formed therefrom
US6394591B1 (en) * 1994-07-06 2002-05-28 Canon Kabushiki Kaisha Ink container
US6578957B2 (en) * 1994-07-06 2003-06-17 Canon Kabushiki Kaisha Ink container, ink jet head having ink container, ink jet apparatus having ink container, and manufacturing method for ink container
US6080482A (en) * 1995-05-25 2000-06-27 Minnesota Mining And Manufacturing Company Undrawn, tough, durably melt-bondable, macodenier, thermoplastic, multicomponent filaments
US5845652A (en) * 1995-06-06 1998-12-08 Tseng; Mingchih M. Dental floss
US5633082A (en) * 1995-06-06 1997-05-27 American Filtrona Corporation Polyethylene terephthalate sheath/thermoplastic polymer core bicomponent fibers, method of making same and products formed therefrom
US5620641A (en) * 1995-06-06 1997-04-15 American Filtrona Corporation Polyethylene terephthalate sheath/thermoplastic polymer core bicomponent fibers, method of making same and products formed therefrom
US6234618B1 (en) * 1995-11-02 2001-05-22 Canon Kabushiki Kaisha Ink absorbing body, ink tank, ink-jet cartridge and ink-jet printing apparatus
US5733825A (en) * 1996-11-27 1998-03-31 Minnesota Mining And Manufacturing Company Undrawn tough durably melt-bondable macrodenier thermoplastic multicomponent filaments
US6270206B1 (en) * 1997-07-30 2001-08-07 Canon Kabushiki Kaisha Ink container having blocking member and boundary layer
US6225243B1 (en) * 1998-08-03 2001-05-01 Bba Nonwovens Simpsonville, Inc. Elastic nonwoven fabric prepared from bi-component filaments
US6103181A (en) * 1999-02-17 2000-08-15 Filtrona International Limited Method and apparatus for spinning a web of mixed fibers, and products produced therefrom
US6330883B1 (en) * 1999-02-17 2001-12-18 Filtrona Richmond, Inc. Heat and moisture exchanger comprising hydrophilic nylon and methods of using same
US20040008853A1 (en) * 1999-07-20 2004-01-15 Sri International, A California Corporation Electroactive polymer devices for moving fluid
US6419350B1 (en) * 1999-08-30 2002-07-16 Canon Kabushiki Kaisha Ink tank, recording head cartridge and ink jet recording apparatus
US6460985B1 (en) * 1999-10-29 2002-10-08 Hewlett-Packard Company Ink reservoir for an inkjet printer
US20010009432A1 (en) * 1999-10-29 2001-07-26 David Olsen Ink reservoir for an inkjet printer
US6402306B1 (en) * 2000-07-28 2002-06-11 Hewlett-Packard Company Method and apparatus for refilling an ink container
US6465094B1 (en) * 2000-09-21 2002-10-15 Fiber Innovation Technology, Inc. Composite fiber construction
US20030039833A1 (en) * 2001-07-17 2003-02-27 Ashish Sen Elastic bicomponent and biconstituent fibers, and methods of making cellulosic structures from the same
US6773810B2 (en) * 2001-07-17 2004-08-10 Dow Global Technologies Inc. Elastic bicomponent and biconstituent fibers, and methods of making cellulosic structures from the same
US20040170831A1 (en) * 2001-07-17 2004-09-02 Ashish Sen Elastic bicomponent and biconstituent fibers, and methods of making cellulosic structures from the same
US6811871B2 (en) * 2001-07-17 2004-11-02 Dow Global Technologies Inc. Elastic bicomponent and biconstituent fibers, and methods of making cellulosic structures from the same
US6814911B2 (en) * 2002-04-03 2004-11-09 Filtrona Richmond, Inc. Method and apparatus for applying additive to fibrous products and products produced thereby
US6840692B2 (en) * 2002-04-10 2005-01-11 Filtrona Richmond, Inc. Method and apparatus for making NIBS and ink reservoirs for writing and marking instruments and the resultant products
US20040041307A1 (en) * 2002-08-30 2004-03-04 Kimberly-Clark Worldwide, Inc. Method of forming a 3-dimensional fiber into a web
US20040041308A1 (en) * 2002-08-30 2004-03-04 Kimberly-Clark Worldwide, Inc. Method of making a web which is extensible in at least one direction
US6881375B2 (en) * 2002-08-30 2005-04-19 Kimberly-Clark Worldwide, Inc. Method of forming a 3-dimensional fiber into a web
US20060084342A1 (en) * 2002-10-24 2006-04-20 BBA Nonwovens Simpsonville, Elastomeric multicomponent fibers, nonwoven webs and nonwoven fabrics
US20050244638A1 (en) * 2004-03-19 2005-11-03 Chang Andy C Propylene-based copolymers, a method of making the fibers and articles made from the fibers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080187751A1 (en) * 2007-02-02 2008-08-07 Ward Bennett C Porous Reservoirs Formed From Side-By-Side Bicomponent Fibers
US9221597B2 (en) 2012-06-12 2015-12-29 Hewlett-Packard Development Company, L.P. Interconnect membrane
US20220160037A1 (en) * 2014-03-27 2022-05-26 Essentra Filter Products Development Co. Pte. Ltd Smoking article
WO2021201820A1 (en) * 2020-03-30 2021-10-07 Hewlett-Packard Development Company, L.P. Electrically conductive structures
WO2021211129A1 (en) * 2020-04-16 2021-10-21 Hewlett-Packard Development Company, L.P. Conductive connections

Also Published As

Publication number Publication date
EP1863646A2 (en) 2007-12-12
JP2008535685A (en) 2008-09-04
WO2006102136A2 (en) 2006-09-28
WO2006102136A3 (en) 2007-10-18

Similar Documents

Publication Publication Date Title
US20060216491A1 (en) Bonded structures formed form multicomponent fibers having elastomeric components for use as ink reservoirs
US20060216506A1 (en) Multicomponent fibers having elastomeric components and bonded structures formed therefrom
KR100235167B1 (en) Ink absorber, ink tank using the ink absorber,ink jet cartridge integrally incoporating ink jet recording head and the ink tank, process for producing the ink tank, fiber body used in the ink tank, and ink jet recording apparatus capable of mounting the ink jet cartridge
US20080187751A1 (en) Porous Reservoirs Formed From Side-By-Side Bicomponent Fibers
JP5484223B2 (en) Manufacturing method of fiber absorbent
JP5991194B2 (en) Waste ink absorber, waste ink tank, droplet discharge device
US6485136B1 (en) Absorber and container for ink jet recording liquid using such absorber
US20060194027A1 (en) Three-dimensional deep molded structures with enhanced properties
US9193165B2 (en) Waste ink absorber, waste ink tank, and liquid droplet ejecting device
WO2017207538A1 (en) Viscoelastic damping body and method for producing same
US8480217B2 (en) Ink jet cartridge having an ink container comprising two porous materials
US20070139491A1 (en) Fluid storage container
JP2014188802A (en) Liquid absorber, liquid tank, droplet discharge device, sound absorber
JP6036285B2 (en) Liquid absorber, waste ink absorber, waste ink tank, droplet discharge device
JP6079224B2 (en) Waste ink absorber, waste ink tank, droplet discharge device
JP6036419B2 (en) Waste ink absorber, waste ink tank, droplet discharge device
JP3921462B2 (en) Ink absorber, method for producing the same, and ink tank using the same
JP2001105622A (en) Ink holder
JP6051853B2 (en) Waste ink absorber, waste ink tank, droplet discharge device
JP2006015968A5 (en)
JP3603463B2 (en) Ink filling method, ink cartridge manufacturing method and manufacturing apparatus
JP2005336501A (en) Ink waste liquid absorbent and its production

Legal Events

Date Code Title Description
AS Assignment

Owner name: FILTRONA RICHMOND, INC., VIRGINIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WARD, BENNETT C.;XIANG, JIAN;SCHNEEKLOTH, ANDREAS;AND OTHERS;REEL/FRAME:017859/0131;SIGNING DATES FROM 20060320 TO 20060321

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION