WO2002052075A1 - Shaped capillary production of homofilament crimp fibers - Google Patents
Shaped capillary production of homofilament crimp fibers Download PDFInfo
- Publication number
- WO2002052075A1 WO2002052075A1 PCT/US2001/046772 US0146772W WO02052075A1 WO 2002052075 A1 WO2002052075 A1 WO 2002052075A1 US 0146772 W US0146772 W US 0146772W WO 02052075 A1 WO02052075 A1 WO 02052075A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fibers
- fiber
- cross sectional
- sectional shape
- capillary
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
- D01F6/06—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
- D01D5/23—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool by asymmetrical cooling of filaments, threads, or the like, leaving the spinnerettes
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-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
- D04H1/42—Non-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
- D04H1/4282—Addition polymers
- D04H1/4291—Olefin series
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-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
- D04H1/42—Non-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
- D04H1/4391—Non-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 characterised by the shape of the fibres
- D04H1/43912—Non-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 characterised by the shape of the fibres fibres with noncircular cross-sections
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-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
- D04H1/42—Non-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
- D04H1/4391—Non-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 characterised by the shape of the fibres
- D04H1/43918—Non-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 characterised by the shape of the fibres nonlinear fibres, e.g. crimped or coiled fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING 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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-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
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING 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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/16—Non-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
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/608—Including strand or fiber material which is of specific structural definition
- Y10T442/609—Cross-sectional configuration of strand or fiber material is specified
- Y10T442/61—Cross-sectional configuration varies longitudinally along strand or fiber material
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/608—Including strand or fiber material which is of specific structural definition
- Y10T442/609—Cross-sectional configuration of strand or fiber material is specified
- Y10T442/611—Cross-sectional configuration of strand or fiber material is other than circular
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/608—Including strand or fiber material which is of specific structural definition
- Y10T442/627—Strand or fiber material is specified as non-linear [e.g., crimped, coiled, etc.]
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/608—Including strand or fiber material which is of specific structural definition
- Y10T442/627—Strand or fiber material is specified as non-linear [e.g., crimped, coiled, etc.]
- Y10T442/635—Synthetic polymeric strand or fiber material
Definitions
- the present invention relates generally to lofty nonwoven fiber webs.
- the present invention relates specifically to lofty nonwoven fiber webs of homofilament crimped fibers and methods for producing the fibers. BACKGROUND OF THE INVENTION
- Webs of homofilament crimped thermoplastic fibers are useful for various fluid handling or retaining materials and the like because of their open structure, resiliency, and economy of manufacture.
- the use of a single thermoplastic polymer in the making of the crimped fibers is good for economical and consistent manufacture.
- the present state of the manufacturing art relies largely on bicomponent filaments to induce the desired level of crimping in a consistent fashion leading to certain compromises in the consistency of fabric characteristics and economy thereof.
- Article refers to a garment or other end-use article of manufacture, including but not limited to, diapers, training pants, swim wear, catamenial products, medical garments or wraps, and the like.
- Bonding refers to the joining, adhering, connecting, attaching, or the like, of two elements. Two elements will be considered to be bonded together when they are bonded directly to one another or indirectly to one another, such as when each is directly bonded to intermediate elements.
- Connected refers to the joining, adhering, bonding, attaching, or the like, of two elements. Two elements will be considered to be connected together when they are connected directly to one another or indirectly to one another, such as when each is directly connected to intermediate elements.
- Disposable refers to articles which are designed to be discarded after a limited use rather than being laundered or otherwise restored for reuse.
- Disposed is intended to mean that one element can be integral with another element, or that one element can be a separate structure bonded to or placed with or placed near another element.
- Fabrics is used to refer to all of the woven, knitted and nonwoven fibrous webs.
- Frm refers to a thermoplastic film made using a film extrusion and/or foaming process, such as a cast film or blown film extrusion process.
- the term includes apertured films, slit films, and other porous films which constitute liquid transfer films, as well as films which do not transfer liquid.
- “Homofilament” refers to a fiber formed from only one predominate polymer and made from a single stream of that polymer. This is not meant to exclude fibers formed from one polymer to which small amounts of additives have been added for coloration, antistatic properties, lubrication, hydrophilicity, etc. "Integral” or “integrally” is used to refer to various portions of a single unitary element rather than separate structures bonded to or placed with or placed near one another.
- “Layer” when used in the singular can have the dual meaning of a single element or a plurality of elements.
- Machine direction refers to the length of a fabric in the direction in which it is produced, as opposed to "cross direction” which refers to the width of a fabric in a direction generally perpendicular to the machine direction.
- Meltblown fiber means fibers formed by extruding a molten thermoplastic material through a plurality of fine, usually circular, die capillaries as molten threads or filaments into converging high velocity heated gas (e.g., air) streams which attenuate the filaments of molten thermoplastic material to reduce their diameter, which may be to microfiber diameter. Thereafter, the meltblown fibers are carried by the high velocity gas stream and are deposited on a collecting surface to form a web of randomly dispersed meltblown fibers.
- heated gas e.g., air
- Meltblown fibers are micro fibers which may be continuous or discontinuous, are generally smaller than about 0.6 denier, and are generally self bonding when deposited onto a collecting surface.
- Meltblown fibers used in the present invention are preferably substantially continuous in length.
- Meltspun refers genetically to a fiber which is formed from a molten polymer by a fiber-forming extrusion process, for example, such as are made by the meltblown and spunbond processes.
- Nonwoven and nonwoven web refer to materials and webs of material which are formed without the aid of a textile weaving or knitting process.
- Polymers include, but are not limited to, homopolymers, copolymers, such as for example, block, graft, random and alternating copolymers, terpolymers, etc. and blends and modifications thereof. Furthermore, unless otherwise specifically limited, the term
- polymer shall include all possible geometrical configurations of the material. These configurations include, but are not limited to isotactic, syndiotactic and atactic symmetries. Words of degree, such as “About”, “Substantially”, and the like are used herein in the sense of “at, or nearly at, when given the manufacturing and material tolerances inherent in the stated circumstances” and are used to prevent the unscrupulous infringer from unfairly taking advantage of the invention disclosure where exact or absolute figures are stated as an aid to understanding the invention.
- substantially circular or elliptical cross sectional shape refers herein to the virtual cross section of an irregularly shaped capillary having a cross section with part of its outer wall defined by a definite radius, if circular, or focal points, if elliptical; with the virtual cross section defined by the boundaries of such a circle or ellipse when continued around or through a portion of the capillary sidewall not defined by the radius or focal points.
- spunbond fiber refers to small diameter fibers which are formed by extruding molten thermoplastic material as filaments from a plurality of fine capillaries of a spinnerette having a circular or other configuration, with the diameter of the extruded filaments then being rapidly reduced as by, for example, in U.S. Patent 4,340,563 to Appel et al., and U.S. Patent 3,692,618 to Dorschner et al., U.S. Patent 3,802,817 to Matsuki et al.,
- Spunbond fibers are quenched and generally not tacky when they are deposited onto a collecting surface. Spunbond fibers are generally continuous and often have average deniers larger than about 0.3, more particularly, between about 0.6 and 10.
- “Surface” includes any layer, film, woven, nonwoven, laminate, composite, or the like, whether pervious or impervious to air, gas, and/or liquids.
- Thermoplastic describes a material that softens when exposed to heat and which substantially returns to a nonsoftened condition when cooled to room temperature.
- a homofilament crimped fiber is produced by a differentially stressed polymer stream exiting through a shaped capillary design. Differently induced shear in the polymer stream results in differential tensions in the filament causing crimp.
- the filaments may further be subjected to differential or directed quenching which provides for setting the crimps in the filaments to further induce the crimp.
- the crimped fibers made according to the present invention can be useful for high loft and high bulk applications such as the loop portions of hook and loop fasteners when designed for engageability with the hook portions, or if a natural fabric cloth-like feel is desired, the fibers may be designed to produce fabric of good softness and drape while keeping sufficient bulk and loft to aid in the cloth like feel.
- the crimped fibers of the present invention may further be useful for making fabrics which are extensible largely in the cross direction of the resultant nonwoven web. Due to the shape of the fibers certain function or esthetic characteristics such as visual appearance and fiber strength may also be enhanced.
- the present invention will further allow the use of polypropylene polymers to produce the homofilament crimped fibers.
- Fig. 1 shows a known apparatus of the general environment used for manufacturing filaments according to the present invention.
- Fig. 2 is a schematic representation of a cross sectional view of the fiber forming capillaries and surrounding elements of a meltspun die head.
- Fig. 3 is a first exemplary capillary shape for producing crimped homofilament fibers according to the present invention.
- Fig. 4 is a second exemplary capillary shape for producing crimped homofilament fibers according to the present invention.
- Fig. 5 is a third exemplary capillary shape for producing crimped homofilament fibers according to the present invention.
- the present invention provides a method of producing homofilament helical crimped fibers for a nonwoven web.
- the present invention is usable with meltspun polymers known to those skilled in the art and most surprisingly works well with polypropylene polymers which are not generally considered good crimped fiber material.
- the means and method of the present invention comprise using a shaped capillary for inducing differential shear between the polymer flowing in a substantially hemispherical, or half round, half of the capillary and the polymer flowing in the nonhemispherical, or shaped, half of that capillary.
- the method may further include differential or directed quenching of the filaments, with the directed quenching air aimed at the shaped portion of the fiber.
- the fibers may be formed of resin which is preferably a thermoplastic polypropylene polymer.
- resin which is preferably a thermoplastic polypropylene polymer.
- Other polymers such as, but not limited to, polyolefins, polyesters, polyamides, polyurethanes, copolymers and mixtures thereof might also be used in accordance with certain aspects of the present invention.
- Fig. 1 shows an apparatus of the general environment used for manufacturing filaments, or "fibers" as used synonymously therewith, according to the present invention.
- Apparatus 10 has a first extruder assembly 12 for producing spunbond fibers in accordance with known methods (also see U.S. Patent 5,382,400 to Pike et al.).
- a spinneret 14 is supplied with molten polymer resin from a resin source (not shown).
- the spinneret 14 produces fine denier fibers from the exit 16, which are quenched by an air stream supplied by a quench blower 18.
- the air stream may differentially cool one side of the fiber stream more than the other side, thus causing bending and crimping of the fibers.
- Crimping creates a softer fabric by reducing the "straightness" of the fibers, between bond points created in the thermal bonding step, as well as fiber-to-fiber bonds.
- Various parameters of the quench blower 18 can be controlled to control the quality and quantity of crimping. Fiber composition and resin selection also determine the crimping characteristics imparted.
- the filaments are drawn into a fiber drawing unit or aspirator 20 having a Venturi tube/channel 22, through which the fibers pass.
- the tube is supplied with temperature controlled air, which attenuates the filaments as they are pulled through the fiber drawing unit 20 in their plastic state.
- the attenuated fibers are then deposited onto a foraminous moving collection belt 24 and retained on the belt 24 by a vacuum force exerted by a vacuum box 26.
- the belt 24 travels around guide rollers 27.
- a compaction roll 28 above the belt which operates with one of the guide rollers 27 beneath the belt, compresses the spunbond mat so that the fibers have sufficient integrity to go through the manufacturing process.
- a die tip 140 defines a polymer supply passage 132 that terminates in further passages defined by counterbores 134 leading to exit passages in the die tip 140 which are known as capillaries 136.
- Capillaries 136 are individual passages formed in and along the length of die tip 140.
- the capillaries of the present invention have a length to width ratio of between about 6:1 and 10:1; with length being defined in the direction of polymer flow and width being the capillary diameter.
- each individual filament is produced by a capillary through which the plastic liquid polymer extrudate is forced.
- Figures 3-5 detail exemplary embodiments of these capillary shapes according to the present invention.
- each capillary cross sectional shape has a substantially hemispherical, or half round, half 112 and a substantially nonhemispherical, shaped or non round, half 114.
- each capillary will be said to have a substantially round, or in the case of Fig. 5, elliptical, cross sectional shape.
- the nonround half of each capillary shape may be seen to have a cut out area 118 of the otherwise substantially round, or in the case of Fig. 5, elliptical, cross sectional shape.
- “Round” and “elliptical” will hereinafter collectively be referred to as "round” for ease of explanation.
- the shaped outer border 117 is contiguous with the round outer border 116 and defines the cutaway portion 118, which is not more than 25% of the entire area within the substantially round outer boundary 116.
- each capillary shape nonround half 114 forms at least one point or angle therein, collectively 120, for forming a point on an outer surface of an extruded fiber.
- the cutaway portion is formed by two radiuses 122, 124 separated by approximately 60°.
- the cutaway portion is formed by crenelations 126 of the outer border which resemble a
- the cutaway portion is formed by two chords 128, 130 within the outer border of generally elliptical shape thereby forming a substantially tear drop shaped outer border of the shaped capillary.
- quenching fluid directed at the nonround half of the fibers i.e. from the general direction of arrow 125 in Fig. 3, is believed to best help fix the stress differentials induced by the shaped capillary and aid in overall crimping.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20010990863 EP1348050A1 (en) | 2000-12-22 | 2001-12-10 | Shaped capillary production of homofilament crimp fibers |
MXPA03005545A MXPA03005545A (en) | 2000-12-22 | 2001-12-10 | Shaped capillary production of homofilament crimp fibers. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25797300P | 2000-12-22 | 2000-12-22 | |
US60/257,973 | 2000-12-22 | ||
US10/006,994 | 2001-12-06 | ||
US10/006,994 US20020098762A1 (en) | 2000-12-22 | 2001-12-06 | Shaped capillary production of homofilament crimp fibers |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002052075A1 true WO2002052075A1 (en) | 2002-07-04 |
Family
ID=26676336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2001/046772 WO2002052075A1 (en) | 2000-12-22 | 2001-12-10 | Shaped capillary production of homofilament crimp fibers |
Country Status (4)
Country | Link |
---|---|
US (1) | US20020098762A1 (en) |
EP (1) | EP1348050A1 (en) |
MX (1) | MXPA03005545A (en) |
WO (1) | WO2002052075A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4155042B2 (en) * | 2002-02-20 | 2008-09-24 | チッソ株式会社 | Elastic long fiber nonwoven fabric and fiber product using the same |
US20090197080A1 (en) * | 2008-01-31 | 2009-08-06 | Glew Charles A | Self-crimping fluoropolymer and perfluoropolymer filaments and fibers |
CN107072836B (en) | 2014-11-06 | 2021-03-16 | 宝洁公司 | Method for making patterned apertured webs |
WO2016073724A1 (en) | 2014-11-06 | 2016-05-12 | The Procter & Gamble Company | Crimped fiber spunbond nonwoven webs / laminates |
EP4056158B1 (en) | 2017-02-16 | 2024-03-06 | The Procter & Gamble Company | Absorbent articles with substrates having repeating patterns of apertures comprising a plurality of repeat units |
EP3421654B1 (en) * | 2017-06-27 | 2021-04-07 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Device with at least one particle and/or fibre generating device and at least one endless belt |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2044098A5 (en) * | 1969-05-08 | 1971-02-19 | Sommer | Forming textured multifilament poly- - propylene yarns |
WO1997013898A1 (en) * | 1995-10-13 | 1997-04-17 | Scs Consultancy Services | Method and apparatus for producing crimped thermoplastics filaments |
WO2001011119A1 (en) * | 1999-08-05 | 2001-02-15 | Autoconcept Limited | Filament production method and apparatus |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4772347A (en) * | 1980-05-09 | 1988-09-20 | Minnesota Mining And Manufacturing Company | Process for making filamentary structure |
US4720314A (en) * | 1980-06-06 | 1988-01-19 | Celanese Corporation | Process for producing self-crimping polyester yarn |
JPS60134011A (en) * | 1983-12-22 | 1985-07-17 | Toray Ind Inc | Method and apparatus for melt-spinning of thermoplastic polymer |
US4619803A (en) * | 1984-07-23 | 1986-10-28 | Monsanto Company | Self-texturing nylon yarn spinning process |
US4783231A (en) * | 1985-10-07 | 1988-11-08 | Kimberly-Clark Corporation | Method of making a fibrous web comprising differentially cooled/thermally relaxed fibers |
US5407625A (en) * | 1993-11-22 | 1995-04-18 | Wellman, Inc. | Method of forming self-texturing filaments and resulting self-texturing filaments |
CA2233163A1 (en) * | 1995-10-30 | 1997-05-09 | Kimberly-Clark Corporation | Fiber spin pack |
-
2001
- 2001-12-06 US US10/006,994 patent/US20020098762A1/en not_active Abandoned
- 2001-12-10 EP EP20010990863 patent/EP1348050A1/en not_active Withdrawn
- 2001-12-10 MX MXPA03005545A patent/MXPA03005545A/en unknown
- 2001-12-10 WO PCT/US2001/046772 patent/WO2002052075A1/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2044098A5 (en) * | 1969-05-08 | 1971-02-19 | Sommer | Forming textured multifilament poly- - propylene yarns |
WO1997013898A1 (en) * | 1995-10-13 | 1997-04-17 | Scs Consultancy Services | Method and apparatus for producing crimped thermoplastics filaments |
US6123886A (en) * | 1995-10-13 | 2000-09-26 | Scs Consultancy Services | Method and apparatus for producing crimped thermoplastics |
WO2001011119A1 (en) * | 1999-08-05 | 2001-02-15 | Autoconcept Limited | Filament production method and apparatus |
Also Published As
Publication number | Publication date |
---|---|
US20020098762A1 (en) | 2002-07-25 |
EP1348050A1 (en) | 2003-10-01 |
MXPA03005545A (en) | 2003-10-06 |
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