EP1516079B1 - Fibres polyester et non-tisse constitue de ces fibres - Google Patents

Fibres polyester et non-tisse constitue de ces fibres Download PDF

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Publication number
EP1516079B1
EP1516079B1 EP03760886A EP03760886A EP1516079B1 EP 1516079 B1 EP1516079 B1 EP 1516079B1 EP 03760886 A EP03760886 A EP 03760886A EP 03760886 A EP03760886 A EP 03760886A EP 1516079 B1 EP1516079 B1 EP 1516079B1
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EP
European Patent Office
Prior art keywords
nonwoven fabric
fibers
polyester staple
staple fibers
polyester
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.)
Expired - Lifetime
Application number
EP03760886A
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German (de)
English (en)
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EP1516079A4 (fr
EP1516079A1 (fr
Inventor
Hironori TEIJIN FIBERS LIMITED GODA
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Teijin Frontier Co Ltd
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Teijin Fibers Ltd
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Publication of EP1516079A4 publication Critical patent/EP1516079A4/fr
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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
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • 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
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
    • 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
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • 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
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43825—Composite fibres
    • D04H1/43828—Composite fibres sheath-core
    • 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
    • D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
    • 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
    • D04H1/70—Non-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
    • D04H1/72—Non-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 the fibres being randomly arranged
    • 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
    • D04H1/70—Non-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
    • D04H1/72—Non-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 the fibres being randomly arranged
    • D04H1/732—Non-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 the fibres being randomly arranged by fluid current, e.g. air-lay
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/24—Polyesters
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core

Definitions

  • the present invention relates to a polyester staple fiber and a nonwoven fabric comprising the same.
  • Polyester staple fibers have excellent mechanical properties and resistances to chemicals, and therefore are widely employed for nonwoven fabrics.
  • the nonwoven fabrics comprising conventional polyester staple fibers are disadvantageous in that the fabrics exhibit an undesirable creaky touch and an unsatisfactory soft hand, in comparison with nonwoven fabrics comprising nylon or polyolefin staple fibers.
  • the nonwoven fabrics can be produced from staple fibers by a method in which a web is formed from the staple fibers by a carding method, a wet laid method or an air-laid method and then the staple fibers in the web are entangled with each other by a needle-punching or a spunlacing or hydro-entangling procedure, or are heat-bonded under pressure by a calender or embosser, or the web is impregnated with an emulsion of a binder and dried to chemically-bond the staple fibers in the web with each other.
  • the polyester staple fibers are disadvantageous in that, in comparison with nylon or polyolefin staple fibers, the smoothness of the polyester staple fibers is low and, when crimped, the resultant crimped fibers easily exhibit a high percentage of crimp, and thus a low fiber-opening property in the ambient air atmosphere, and therefore, production of a nonwoven fabric having a uniform texture from the polyester staple fibers is difficult.
  • This trend is significantly realized when undrawn polyester fibers or copolymeric polyester fibers which have a low degree of orientation and a low degree of crystallinity and are preferred as binder fibers, are employed for the production of the nonwoven fabrics.
  • the nonwoven fabrics having a uniform texture there is a limit in the production of the nonwoven fabrics having a uniform texture, from a web formed by using the binder fibers, particularly from 100% of the binder fibers, by the air laid method. Also, even in the case where the carding method or wet laid method is employed, a production of nonwoven fabrics having a uniform texture from the polyester staple fibers having a low surface smoothness and thus exhibiting a poor fiber-opening property, is difficult.
  • the above-mentioned trend is further intensified when the web is formed from the binder fibers by a carding method.
  • Japanese Examined Patent Publication No. 48-1480 discloses a method in which a dimethylsiloxane compound or a amine-modified silicone compound is applied to surfaces of the polyester fibers and cross-linking the applied compound by heating.
  • the staple fibers of the Japanese publication have very little friction between the fibers and thus exhibit an insufficient fiber-entangling property and the resulting web is easily broken.
  • the staple fibers of the Japanese publication repel water
  • the fibers are not evenly dispersed in water.
  • static electricity is generated on the staple fibers of the Japanese publication and, in the resultant web, the staple fibers are unevenly distributed.
  • the staple fibers of the Japanese publication are used as binder libers, the surface-treating agent applied to the surfaces of the polyester staple fibers forms a barrier against the heat-bonding of the fibers.
  • an object of the present invention is to provide polyester staple fibers enabling a nonwoven fabric having a soft hand and a uniform texture to he realized, and to nonwoven fabric comprising the polyester staple fibers. Further, the present invention is intended to provide a nonwoven fabric produced from a web formed from the polyester staple fibers by an air laid method and having the above-mentioned excellent quality.
  • polyester staple fibers portions of the peripheral surfaces of which are formed from a polymeric blend of a polyester and a polyolefin mixed and dispersed in the polyester, exhibit appropriate friction between the staple fibers, and a nonwoven fabric having not only a soft hand, but also a very uniform texture can be obtained in the case where the content of the polyolefin in the fibers is established within a specific range of the content.
  • the above-mentioned object can be attained by the polyester staple fiber of the present invention comprising a polymeric blend comprising 0.5 to 15% by mass of a polyolefinic polymer mixed and dispersed in a matrix polyester polymer, 50% or more of the surface area of the fiber bering formed by the polymeric blend and the fiber having a fiber length of 2 to 30 mm, and a plane zigzag type or omega ( ⁇ ) type crimps in a number of crimps of to 13 crimps/25mm and a percentage of crimp of 3 to 15%.
  • the polyolefinic polymer preferably comprises at least one member selected from polyethylene, polypropylene, ethylene-propylene copolymers and polyethylene copolymers and polypropylene copolymers in which at least one ethylenically unsaturated monomer different from ethylene and propylene is block-copolymerized or graft-copolymerized.
  • the matrix polyester polymer is preferably selected from polyalkylene terephthalates and polyalkylene terephthalate-isophthalate copolymers.
  • the polyester staple fiber of the present invention preferably has a degree of crystallization of 20% or less or a birefringence of 0.05 or less.
  • the polyester staple fiber of the present invention preferably has a concentric or eccentric core-in-sheath conjugate structure in which the sheath section is formed from the polymeric blend.
  • the nonwoven fabric (1) of the present invention comprises a plurality of the polyester staple fibers as mentioned above, and formed by an air laid web-forming method.
  • the nonwoven fabric (1) of the present invention preferably has a percentage of non-opened fibers of 5% or less.
  • the nonwoven fabric (2) of the present invention comprises a plurality of the polyester staple fibers as mentioned above, and is formed by a wet laid web-forming method.
  • the nonwoven fabric (3) of the present invention comprises a plurality of the polyester staple fibers as mentioned above and is formed by a carding web-forming method.
  • the nonwoven fabric (1), (2) or (3) of the present invention preferably has a bending resistance of 70 mm or less, determined by the cantilever method.
  • the staple fibers of the present invention are polyester staple fibers 50% the surface area of which are formed by a polymeric blend comprising a polyolefinic polymer mixed and dispersed in a matrix polyester polymer.
  • polyester polymers usable for the present invention include, for example, polyesters of aromatic dicarboxylic acids with aliphatic diols, such as polyalkylene terephthalates, for example, polyethylene terephthalate, polytrimethylene terephthalate and polybutylene terephthalate and polyalkylene naphthalates, for example, polyethylene naphthalates; polyesters of cycloaliphalic dicarboxylic acids with aliphatic diols, for example, polyalkylene cyclohexane-dicarboxylates; polyesters of aromatic dicarboxylic acids with cycloaliphatic diols, for example, polycyclohexanedimethanol terephthalate; polyesters of aliphatic dicarboxylic acids with aliphatic diols, for example, polyethylene succinate, polybutylene succinate, polyethylene adipate and polybutylene adipate; and polyhydroxycarboxylate esters, for example, poly
  • the polyesters usable for the present invention may be copolyesters containing at least one copolymerizing component selected from acid components, for example, isophthalic acid, phthalic acid, adipic acid, sebacic acid, ⁇ , ⁇ -(4-carboxyphenoxy)ethane, 4,4-dicarboxyphenyl, 5-sodium sulfoisophthatic acid, 2,6-naphthalene dicarboxylic acid and 1,4-cyclohexanedicarboxylic acid and esters of the above-mentioned acids, and diol components, for example, diethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, neopentyl glycol, 1,4-cyclohexane dimethanol and polyalkylene glycol.
  • acid components for example, isophthalic acid, phthalic acid, adipic acid, sebacic acid, ⁇ , ⁇
  • the copolymerizing component may be selected from compounds having three or more carboxylic acid groups or hydroxyl groups, for example, pentaerythritol, trimethylolpropane, trimellitic acid, and trimesic acid, to cause the resultant copolyesters have branched chains.
  • the above-mentioned polyester polymers (copolymers) may be employed alone or in a mixture of two or more thereof.
  • the polyester polymer and the polyolefinic polymer may contain one or more of additives, fluorescent brightening agents, stabilizers, flame retardants, flame retardant assistants, ultraviolet ray absorbers, antioxidants and various coloring pigments, as long as the effects of the present invention are not degraded.
  • the content of the polyolefinic polymer to be mixed and dispersed in the matrix polyester polymer must be in the range of from 0.5 to 15% by mass, preferably from 1 to 10% by mass, more preferably 2 to 7% by mass, still more preferably 2 to 5% by mass, based on the mass of the polymeric blend. If the content of the polyolefinic polymer is less than 0.5% by mass, the object of the present invention, namely a preparation of the polyester staple fiber-containing nonwoven fabric having the soft hand and the uniform texture cannot be attained.
  • the polyolefinic polymer content is more than 15% by mass, not only the above-mentioned effect is saturated or cannot be obtained, but also the fiber-forming property of the resultant polymeric blend is degraded and thus the target staple fibers of the present invention cannot be produced.
  • the polyester staple fibers of the present invention 50% or more, preferably 70% or more, more preferably 90% to 100%, of the surface areas of the fibers must be formed from the polymeric blend. If the proportion of the surface area formed by the polymeric blend is less than 50%, the resultant nonwoven fabric exhibits an insufficient softness and an unsatisfactory uniformity in texture.
  • the staple fibers satisfying the above-mentioned requirement include staple fibers formed from 100% by mass of the polymeric blend and conjugate staple fibers in which the polymeric blend forms 50% or more of the surface areas of the fibers.
  • the conjugate staple fibers include concentric core-in-sheath type, eccentric core-in-sheath type, side-by-side type and islands-in-sea type and segment pie type conjugate staple fibers.
  • the concentric and eccentric core-in-sheath conjugate staple fibers in which 70% or more, more preferably 100% of the fiber surface area is formed by the polymeric blend sheath section, are employed for the present invention.
  • the polyester staple fibers of the present invention may be hollow fibers or non-hollow fibers.
  • the cross-sectional profile of the polyester staple fibers of the present invention is not limited to circular and may be selected from irregular profiles, for example, oval, multi-lobed, for example, three to eight lobed and polygonal such as, as examples, triangle to octagonal profiles.
  • the effect of the present invention is significantly realized in the polyester staple fibers having a birefringence of 0.05 or less or a degree of crystallinity of 20% or less.
  • polyester staple fibers having a birefringence of 0.05 or less or a degree of crystallinity of 20% or less
  • the resultant nonwoven fabric may exhibit a degraded hand, reduced fiber-opening property and, thus, an unsatisfactory uniformity in texture of the fibers.
  • This trend appears to be significant in the low orientation fibers (undrawn fibers) produced by melt-spinning a polyalkylene terephthalate, particularly, a isophthalic acid-copolymerized polyalkylene terephtalate, at a low taking-up speed of 2000 m/minute or less.
  • the above-mentioned trend appears to be very significant in the fibers formed from the polyethylene terephthalate having a low degree of crystallinity and the copolymerized polyethylene terephthalate with 5 to 50 molar% of isophthalic acid based on the total molar amount of the acid component.
  • the above-mentioned polyester staple fibers can be heat-bonded under pressure to each other and are usable as binder fibers for the nonwoven fabric.
  • the resultant polyester staple fibers can be used as binder fibers without causing the above-mentioned problem.
  • the resultant polyester staple fibers of the present invention are useful for the production of the nonwoven fabric having a desired soft hand and uniform texture.
  • the thickness of the individual polyester staple fibers of the present invention is preferably in the range of 0.01 to 500 dtex.
  • the polyester staple fibers of the present invention can be produced by, for example, the process illustrated below.
  • a melt of a polymeric blend of a polyester polymer with a polyolefinic polymer is extruded through a (melt-)spinneret having a plurality of spinning orifice of a conventional (melt-)spinning apparatus, the extruded filamentary streams of the melt are cooled and solidified by blowing cooling air toward the melt streams and drafting, the solidified filaments are taken-up at a speed of 100 to 2000 m/minute to provide undrawn polyester multi-filament yarn.
  • the melt of the polymeric blend is prepared by blending a melt of the polyester polymer with a melt of the polyolefinic polymer by a static mixer, or dynamic mixer or by blending pellets of the polyester polymer and the polyolefinic polymer with each other in a desired mass ratio and (melt-)kneading the blend by using a (melt-)extruder, and the resultant blend melt is fed to the (melt-)spinneret.
  • the resultant undrawn filaments are drawn at a desired draw ratio in hot water at a temperature of 70 to 100°C or in steam at a temperature of 100 to 125°C, and optionally the resultant drawn filaments are crimped, oiled with a finish oil in consideration of the use and the object of the resultant staple fibers, dried and relaxed.
  • the resultant filaments are cut into staple fibers having a desired fiber length, to obtain the target polyester staple fibers.
  • the oiling agent may contain a silicone compound of the type and in the amount which do not hinder the attainment of the object of the present invention.
  • the polyester staple fibers of the present invention having a birefringence of 0.05 or less or a degree of crystallinity of 20% or less can be obtained by the same procedures as mentioned above, except that the drawing procedure is omitted and the finish oil is applied to the undrawn filaments and the oiled undrawn filaments are dried at the temperature for the time which do not cause the degree of crystallinity of the dried filaments to exceed 20%.
  • the staple fiber length is adjusted and the crimps are imparted in response to the method of forming a web from the fibers, as follows.
  • the staple fiber length is preferably adjusted to 2 to 30 mm, more preferably 3 to 20 mm.
  • the desired staple fibers can be industrially produced at a satisfactory process stability, and by controlling the fiber length to not more than 30 mm, the resultant staple fibers exhibit an enhanced fiber-opening property, and a high resistance to the generation of fiber lumps.
  • the polyester staple fibers are crimped fibers, in view of the use of the resultant nonwoven fabric. Namely, where the target nonwoven fabric must have a high bulkiness, the staple fibers are crimped fibers.
  • the number of crimps is 3 to 13 crimps/25 mm and the percentage of crimps is 3 to 15%.
  • the resultant nonwoven fabric may exhibit a satisfactory fiber-opening property by air-blowing.
  • the polyester staple fibers of the present invention easily have a low number of crimps and percentage of crimps in comparison with those of the conventional polyester staple fibers, the adjustment of the number and percentage of crimps within the above-mentioned range is easy.
  • the number and percentage of crimps are adjusted to not less than 3 crimps/25 mm and not less than 3% respectively.
  • the mode of crimping is preferably in a plane zigzag or ⁇ (omega) form which are formed within a plane, rather than a three dimensional spiral crimping mode, because the plane zigzag or ⁇ crimped staple fibers exhibit a higher fiber-opening property than the spirally crimped staple fiber.
  • the content of non-opened staple fibers in the resultant web by the air laid method can be reduced to 5% by mass or less.
  • the fiber length of the polyester staple fibers is preferably 2 to 30 mm, more preferably 3 to 20 mm.
  • the crimps are imparted in consideration of the use and purpose of the target nonwoven fabric, to the staple fibers.
  • the fiber length not exceeding 30 mm may enable the breakages of the resultant web due to insufficient entanglement of the staple fibers with each other to be prevented or reduced.
  • the crimped polyester staple fibers are employed.
  • the number and percentage of crimps adjusted to not less than 5 crimps/25 mm and not less than 3% may enable the breakages of the resultant web due to the insufficient entanglement of the staple fibers with each other to be prevented or reduced.
  • the mode of crimping may be conventional plane zigzag or a ⁇ (omega) mode or three dimensional spiral node.
  • the nonwoven fabric comprising the polyester staple fibers of the present invention has a soft touch and good hand and can exhibit a resistance to bending, which represents a softness of the fabric, of 70 mm or less, determined by the cantilever method.
  • the nonwoven fabric of the present invention includes nonwoven fabrics comprising the polyester staple fibers of the present invention mixed with staple fibers other than the polyester staple fibers of the present invention and nonwoven fabric laminate comprising at least one nonwoven fabric layer comprising the polyester staple fibers of the present invention and at least one additional nonwoven fabric layer comprising staple fibers other than those of the present invention, laminated on each other.
  • the nonwoven fabric formed from the polyester staple fibers of the present invention alone exhibits a specific soft hand other than that of the nonwoven fabric comprising the conventional polyester staple fibers, and thus is preferred in various uses.
  • polyester staple fibers of the present invention 50% or more of the peripheral surface area of individual staple fibers are formed from the specific polymeric blend of a polyester polymer with 0.5 to 15% by mass of a polyolefinic polymer.
  • This feature of the present invention enables the resultant staple fibers to exhibit a reduced friction between the fibers and thus an enhanced fiber-opening property and therefore, the resultant nonwoven fabric to exhibit a soft hand and a high uniformity in texture thereof.
  • the polyolefinic polymer is incompatible with the polyester polymer and thus when an appropriate amount of the polyolefinic polymer is mixed and dispersed in a matrix consisting of the polyester polymer, the ployolefinic polymer is suspended in the form of a plurality of islands located in a sea consisting of the matrix polyester polymer, and when individual fibers are formed by using the polymeric blend, a portion of the islands appears on at least a portion of the peripheral surface of each of the individual fibers so as to roughen the peripheral surface, and thus the resultant individual fibers are mainly contacted with each other at the convexed portions of the peripheral surfaces of the fibers and exhibit a low frictional coefficient with each other.
  • the thickness of fibers was determined in accordance with JIS L 1015-1992, 7.5.1, Method A.
  • the length of staple fibers was determined in accordance with JIS L 1015-1992, 7.4.1, Direct Method (method C).
  • the number and percentage of crimps of crimped staple fibers were determined in accordance with JIS L 1015-1992, 7.12.
  • polyester polymer The intrinsic viscosity ([ ⁇ ]) of polyester polymer was measured in orthochlorophenol at a temperature of 35°C.
  • the MFR of polyester polymer on polyolefinic polymer was measured in accordance with JIS K 7210, under condition 4.
  • the glass transition temperature (Tg) and melting temperature (Tm) of polyester polymer or polyolefinic polymer was measured by using a differential scanning calorimeter (model: DSC-7, made by Parkin-Elmer Co.) at a temperature-increasing rate of 20°C/minute.
  • the degree of crystallinity of fibers was determined by measuring a density ⁇ in g/cm 3 of a fiber using a density-gradient tube containing a mixture of n-heptane with carbon tetrachloride at a temperature of 25°C, and calculating it from the resultant density ⁇ of the fiber in accordance with the following equation.
  • xc ⁇ c ⁇ ⁇ - ⁇ a / ⁇ ⁇ ⁇ c - ⁇ a
  • xc represents a degree of crystallinity, in % by mass, of the fibers
  • ⁇ c represents a crystal density of polyethylene terephthalate, namely 1.455 g/cm 3
  • ⁇ a represents an amorphous density of polyethylene terephthalate, namely 1.335 g/cm 3
  • ⁇ represents the density of the fibers.
  • the birefringence ( ⁇ n) of fibers was determined by a retardation method using, as an immersion liquid, bromonaphthalene and a Belec compensator, as disclosed in W.E. Morton and J.W.S. Hearle, "Physical Properties of Textile Fibers", page 524 to 532 , 22.2.1 Refractive Index and birefringence to 22.2.3 Measurement of birefringence, published by the Textile Institute Butter Worths, Manchester & London.
  • Non-opened fiber lumps were taken-up from 10g of a web produced by the air laid method, the mass (x) of the taken-up fiber lumps was measured, and the percentage (u) of the non-opened fibers in the web was calculated in accordance with the following equation.
  • u % x / 10 ⁇ 100 wherein x represents a mass of the non-opened fiber lumps taken-up from the web and u represents a percentage of the non-opened fibers in the web.
  • the bending resistance of the nonwoven fabric was measured in accordance with JIS L 1085-1992, 5.7. Method A (45° cantilever method). The lower the number, the higher the softness of the fabric.
  • the appearance of the woven fabric was observed by the naked eye and evaluated in the following three classes.
  • Class Fabric texture 3 No non-opened fiber lump is found. No unevenness in mass distribution is found. Texture of fabric is uniform. 2 Non-opened fiber lumps appear to be not significant. Uneven mass distribution is found by naked eye observation. 1 Non-opened fiber lumps are significant. Uneven mass distribution is significant. The fabric texture is not uniform.
  • PET Polyethylene terephthalate
  • HDPE high density polyethylene
  • the extruded filamentary melt streams were cooled with cooling air at a temperature of 30°C and the cooled and solidified undrawn multifilament yarn was wound up at a speed of 1150 m/minute.
  • the undrawn multifilament yarn was subjected to a crimping procedure using a stuffing box type crimper, to impart plane zigzag-formed crimps with the number of crimps of 8 crimps/25 mm and a percentage of crimps of 4% to the undrawn individual filaments of the multifilament yarn.
  • the crimped multifilament yarn was oiled with 0.25% by dry mass, based on the dry mass of the yarn, of an oiling agent comprising an alkylphosphate potassium salt and a polyoxyethylene-modified silicone in a mass ratio of 80/20, and dried by blowing hot air at a temperature of 45°C.
  • the dried undrawn multifilaments were cut into a fiber length of 5 mm.
  • the resultant polyester staple fibers had a thickness of 3.1 dtex, a degree of crystallinity of 16% and a birefringence of 0.0035.
  • the staple fibers were subjected to an air laid web-forming procedure to provide a web having a basis mass of 50 g/m 2 .
  • the web was subjected to a calendering procedure using a pair of flat calender rollers having a roller surface temperature of 200°C under a linear pressure of 80 kPa•m at a speed of 20 m/minute, to prepare an air laid nonwoven fabric.
  • the nonwoven fabric had a bending resistance of 50 mm, a percentage (u) of non-opened fibers of 0.5% and a texture of the nonwoven fabric in class 3.
  • Polyester staple fibers and an air laid nonwoven fabric were produced by the same procedures as in Example 1, except that the PET was replaced by a polyethylene terephthalate isophthalate copolymer containing 10 molar% of copolyesterified isophthalic acid and having a melting temperature of 220°C.
  • the resultant polyester staple fibers had a thickness of 3.4 dtex, a degree of crystallinity of 9%, and a birefringence of 0.0027.
  • the resultant nonwoven fabric had a bending resistance of 44 mm, a percentage (u) of non-opened fibers of 0.8% and a nonwoven fabric texture in class 3.
  • MFR melt index
  • Tm melting temperature
  • the polymeric blend melt and the PET melt were subjected to a melt spinning procedure using a concentric core-in-sheath type conjugate filament-forming spinneret having 1032 spinning orifices having an inner diameter of 0.3 mm for forming core-in-sheath type composite filaments having sheath portions formed from the polymeric blend melt and a core portions formed from the PET melt in a cross sectional area ratio (A/B) of the sheath portions (A) to the core portions (B) of 50:50.
  • A/B cross sectional area ratio
  • the core-in-sheath type conjugate streams of the polymeric blend melt and the PET melt were extruded through the spinneret at a spinneret temperature of 285°C at a extruding rate of 870 g/minute, and cooled by blowing cooling air at a temperature of 30°C.
  • the resultant undrawn core-in-sheath type conjugate multifilament yarn was wound up at a speed of 1150 m/minute.
  • the undrawn conjugate multi filament yarn was drawn in hot water at a temperature of 80°C at a draw ratio of 3.75, then the drawn conjugate multifilament yarn was passed through a water bath at a temperature of 30°C to cool the yarn and to prevent the fuse adhesion of the drawn individual filaments to each other, the cooled yarn was oiled with 0.2% by dry mass of an oiling agent comprising an alkylphosphate potassium salt and a polyoxyethylene-modified silicone in a mixing dry mass ratio of 80:20.
  • the oiled yarn was crimped in a stuffing box type crimper to impart plane zigzag-formed crimps in the number of crimps of 9 crimps/25 mm and a percentage of crimps of 12%, to the individual conjugate filaments.
  • the crimped filaments were dried at a temperature of 50°C and cut into a fiber length of 5 mm.
  • the resultant staple conjugate fibers had a thickness of 2.1 dtex.
  • the staple conjugate fibers were subjected to an air laid web-forming procedure to provide a web having a basis mass of 50 g/m 2 .
  • the web was subjected to a heat-bonding procedure using a hot air blow at a temperature of 150°C for 2 minutes to cause the individual staple conjugate fibers to adhere at portions thereof crossing each other.
  • the resultant air laid nonwoven fabric had a bending resistance of 53 mm, a percentage of non-opened fibers of 0.7% and a texture of the nonwoven fabric in class 3.
  • Polyester staple composite fibers and an air laid nonwoven fabric were produced by the same procedures as in Example 3, except that the polymeric blend of the amorphous PET copolymer with HDPE for the sheath portions of the conjugate fibers was replaced by an amorphous polyethylene terephthalate isophthalate copolymer containing 40 molar% of copolymerized isophthalic acid and having an intrinsic viscosity [ ⁇ ] of 0.55 and Tg of 65°C.
  • the resultant staple conjugate fibers had a thickness of 2.1 dtex.
  • the resultant nonwoven fabric had a bending resistance of 83 mm, a percentage of non-opened fibers of 11% and a nonwoven fabric texture in class 1.
  • a polymeric blend for the sheath portions of the core-in-sheath type conjugate filaments was prepared by the same manner in Example 3, except that a mixing ratio of the amorphous PET copolymer pellets to the HDPE was changed from 95:5 to 84:16.
  • the resultant polymeric blend exhibited a poor filament-forming property and thus the melt-spinning procedures could not be carried out.
  • Polyester staple fibers and a nonwoven fabric were produced by the same procedures as in Example 3, with the following exceptions.
  • the HDPE was replaced by an isotactic polypropylene resin having an MFR of 30 g/10 minutes and a Tm of 160°C.
  • the resultant staple conjugate fibers had a thickness of 2.2 dtex.
  • the resultant nonwoven fabric had a bending strength of 58 mm, a percentage of non-opened fibers of 1.3% and a nonwoven fabric texture in class 3.
  • Polyester staple fibers and a nonwoven fabric were produced by the same procedures as in Example 3, with the following exceptions.
  • the HDPE was replaced by an ethylenepropylene random copolymers in a copolymerization molar ratio of ethylene to propylene of 37:63 and having an MFR of 50 g/10 minutes and a Tm of 135°C.
  • the resultant staple conjugate fibers had a thickness of 2.2 dtex.
  • the resultant nonwoven fabric had a bending resistance of 58 mm, a percentage of non-opened fibers of 1.3% and a nonwoven fabric texture in class 3.
  • Polyester staple fibers and a nonwoven fabric were produced by the same procedures as in Example 3, with the following exceptions.
  • the HDPE was replaced by a straight linear low density polyethylene graft-copolymerized with 3.5% by mass of maleic anhydride and having an MFR of 8 g/10 minutes and a Tm of 96°C.
  • the resultant staple conjugate fibers had a thickness of 2.2 dtex.
  • the resultant nonwoven fabric had a bending resistance of 52 mm, a percentage of non-opened fibers of 0.8% and a nonwoven fabric texture in class 3.
  • Polyester staple fibers and a nonwoven fabric were produced by the same procedures as in Example 3, with the following exceptions.
  • the PET for the core portions of the conjugate filaments was replaced by nylon 6 having an intrinsic viscosity of 1.34, determined in metacresol at a temperature of 35°C and a Tm of 215°c. Chips of the nylon 6 were melted in an extruder to prepare a nylon 6 melt having a temperature of 240°C.
  • the melt-spinning for the core-in-sheath type conjugate filaments was carried out at a spinneret temperature of 250°C at an extruding rate of 500 g/minute.
  • the resultant undrawn multifilament yarn was drawn at a draw ratio of 2.1 at room temperature and then at a draw ratio of 1.05 in hot water having a temperature of 55°C.
  • the drawn multifilament yarn was passed through a water bath to cool it and then oiled in the same manner as in Example 3.
  • the oiled multifilament yarn was crimped with plane zigzag-formed crimps in the number of crimps of 12 crimps/25 mm and in a percentage of crimps of 6.5% and then dried at a temperature of 45°C.
  • the crimped multifilaments were cut into staple fibers in the same manner as in Example 3.
  • the resultant staple conjugate fibers had a thickness of 2.2 dtex.
  • the resultant nonwoven fabric had a bending resistance of 57 mm, a percentage of non-opened fibers of 1.6% and a nonwoven fabric texture in class 3.
  • Polyester staple fibers and a nonwoven fabric were produced by the same procedures as in Example 3, except that the staple fiber length was changed from 5 mm to 3 mm.
  • the resultant nonwoven fabric had a bending resistance of 57 mm, a percentage of non-opened fibers of 1.6% and a nonwoven fabric texture in class 3.
  • Polyester staple fibers and a nonwoven fabric were produced by the same procedures as in Example 3, except that the concentric core-in-sheath type conjugate filament-forming spinneret was replaced by an eccentric core-in-sheath type conjugate filament-terming spinneret, the percentage of the crimps on the crimped fibers was changed from 12% to 15%, and the crimps had an omega ( ⁇ ) form.
  • the resultant staple conjugate fibers had a thickness of 2.3 dtex.
  • the resultant nonwoven fabric had a bending resistance of 55 mm, a percentage of non-opened fibers of 0.9% and a nonwoven fabric texture in class 3.
  • Polyester staple fibers and a nonwoven fabric were produced by the same procedures as in Example 3, except that no crimping was applied to the drawn composite multifilament yarn.
  • the resultant nonwoven fabric had a bending resistance of 53 mm, a percentage of non-opened fibers of 0.2% and a nonwoven fabric texture in class 3.
  • Polyester staple fibers prepared by the same procedures as in Example 10 and wood pulp fibers in a mass ratio of 80:20 were suspended in water, while fully stirring, and a sheet having dimensions of about 25 cm ⁇ about 25 cm and a dry basis mass of 50 g/m 2 was prepared from the aqueous mixed fiber slurry by using a square-shaped sheet-forming machine.
  • the sheet was dried at room temperature over 24 hours or more, then placed on a perforated polytetrafluoroethylene sheet and subjected to a shrinking treatment in a hot air-circulation type dryer at a temperature of 120°C for 5 minutes, to produce a wet laid method nonwoven fabric.
  • the resultant nonwoven fabric had a bending resistance of 38 mm and a nonwoven fabric texture in class 3.
  • Polyester staple fibers and a wet laid method nonwoven fabric were produced by the same procedures as in Example 11, except that the crimping procedure for the drawn multifilament yarn was omitted.
  • the resultant nonwoven fabric had a bending resistance of 38 mm and a nonwoven fabric texture in class 2.
  • Polyester staple fibers were produced by the same procedures as in Example 3, except that fiber length of the staple fibers was changed from 5 mm to 51 mm.
  • the staple fibers were fed to a carding procedure using a roller carding machine to prepare a card web.
  • the staple fibers exhibited a good carding machine-passing property.
  • a plurality of card webs were superposed on each other to prepare a laminated web having a basis mass of 50 g/m 2 .
  • the laminated web was subjected to the same heat-bonding procedure as in Example 3 using hot air streams to heat-bonding the staple fibers at crossing portions thereof to each other.
  • a carding method heat-bonding nonwoven fabric.
  • the resultant nonwoven fabric had a bending resistance of 58 mm and a nonwoven fabric texture in class 3.
  • Polyester staple fibers were produced by the same procedures as in Example 10, except that fiber length of the staple fibers was changed from 5 mm to 51 mm.
  • the staple fibers were fed to the same carding procedure as in Example 12 to prepare a card web.
  • the staple fibers exhibited a good carding machine-passing property.
  • a plurality of card webs were superposed and heat-bonding in the same manner as in Example 12 to produce a card method heat-bonding nonwoven fabric.
  • the resultant nonwoven fabric had a bending resistance of 51 mm and a nonwoven fabric texture in class 3.
  • the present invention can provide specific polyester staple fibers useful for forming a nonwoven fabric having a soft hand and a uniform texture. Also, the present invention can provide a nonwoven fabric having not only a uniform texture but also a soft hand. Especially, the nonwoven fabric produced from a web formed from the polyester staple fibers of the present invention by an air laid web-forming method has a very low percentage of non-opened fibers and an excellent uniformity of texture.
  • the specific polyester staple fibers enable the resultant nonwoven fabric produced from the staple fibers to have widened various uses and thus have a high industrial value.

Claims (10)

  1. Fibre discontinue polyester comprenant :
    un mélange polymère comprenant 0,5 à 15 % en masse d'un polymère polyoléfinique mélangé et dispersé dans un polymère polyester matrice,
    50 % ou plus de la surface de la fibre étant formé par le mélange polymère, et la fibre ayant une longueur de fibre de 2 à 30 mm, et des frisures de type zigzag ou de type oméga dans un nombre de frisures de 3 à 13 frisures/25 mm et un pourcentage de frisures de 3 à 15 %.
  2. Fibre discontinue polyester selon la revendication 1, dans laquelle le polymère polyoléfinique comprend au moins un élément choisi parmi polyéthylène, polypropylène, copolymères d'éthylène-propylène et copolymères de polyéthylène et copolymères de polypropylène, dans lequel au moins un monomère insaturé éthyléniquement différent de l'éthylène et du propylène fait l'objet d'une copolymérisation séquencée ou d'une copolymérisation avec greffage.
  3. Fibre discontinue polyester selon la revendication 1, dans laquelle le polymère polyester matrice est choisi parmi térephtalates de polyalkylène et copolymères de térephthalate-isophthalate de polyalkylène.
  4. Fibre discontinue polyester selon l'une quelconque des revendications 1 à 3, ayant un degré de cristallisation de 20 % ou moins ou une biréfringence de 0,05 ou moins.
  5. Fibre discontinue polyester selon l'une quelconque des revendications 1 à 3, ayant une structure conjuguée âme-gaine concentrique ou excentrique, dans laquelle la section de gaine est formée à partir du mélange polymère.
  6. Tissu non tissé comprenant une pluralité des fibres discontinues polyester selon l'une quelconque des revendications 1 à 5, et formé par un procédé de formation de toile par voie sèche (air-laid).
  7. Tissu non tissé selon la revendication 6, ayant un pourcentage de fibres non ouvertes de 5 % ou moins.
  8. Tissu non tissé comprenant une pluralité des fibres discontinues polyester selon l'une quelconque des revendications 1 à 5, et formé par un procédé de formation de toile par voie humide (wet-laid).
  9. Tissu non tissé comprenant une pluralité des fibres discontinues de polyester selon l'une quelconque des revendications 1 à 5 et formé par un procédé de formation de toile par cardage.
  10. Tissu non tissé selon l'une quelconque des revendications 6 à 9, ayant une résistance à la flexion de 70 mm ou moins, comme déterminé par le procédé de porte-à-faux.
EP03760886A 2002-06-21 2003-06-18 Fibres polyester et non-tisse constitue de ces fibres Expired - Lifetime EP1516079B1 (fr)

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JP2002181139A JP4027728B2 (ja) 2002-06-21 2002-06-21 ポリエステル系短繊維からなる不織布
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PCT/JP2003/007754 WO2004001108A1 (fr) 2002-06-21 2003-06-18 Fibres polyester et non-tisse constitue de ces fibres

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7892993B2 (en) 2003-06-19 2011-02-22 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US8178199B2 (en) 2003-06-19 2012-05-15 Eastman Chemical Company Nonwovens produced from multicomponent fibers
US8216953B2 (en) 2003-06-19 2012-07-10 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US8512519B2 (en) 2009-04-24 2013-08-20 Eastman Chemical Company Sulfopolyesters for paper strength and process
US8840758B2 (en) 2012-01-31 2014-09-23 Eastman Chemical Company Processes to produce short cut microfibers
US9273417B2 (en) 2010-10-21 2016-03-01 Eastman Chemical Company Wet-Laid process to produce a bound nonwoven article
US9303357B2 (en) 2013-04-19 2016-04-05 Eastman Chemical Company Paper and nonwoven articles comprising synthetic microfiber binders
US9598802B2 (en) 2013-12-17 2017-03-21 Eastman Chemical Company Ultrafiltration process for producing a sulfopolyester concentrate
US9605126B2 (en) 2013-12-17 2017-03-28 Eastman Chemical Company Ultrafiltration process for the recovery of concentrated sulfopolyester dispersion

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4831971B2 (ja) * 2005-01-11 2011-12-07 日本エステル株式会社 不織布用短繊維及び短繊維不織布
US20090243141A1 (en) * 2006-02-06 2009-10-01 Hironori Goda Manufacturing method of polyester fiber for airlaid nonwoven fabrics
JP4881026B2 (ja) * 2006-02-06 2012-02-22 帝人ファイバー株式会社 エアレイド不織布用熱接着性複合繊維およびその製造方法
JP4955278B2 (ja) * 2006-02-06 2012-06-20 帝人ファイバー株式会社 エアレイド不織布用ポリエステル系繊維およびその製造方法
JP5065670B2 (ja) * 2006-12-27 2012-11-07 帝人ファイバー株式会社 不織布およびシート
JP5444681B2 (ja) * 2007-10-19 2014-03-19 Ｅｓファイバービジョンズ株式会社 ポリエステル系熱融着性複合繊維
JP4960908B2 (ja) * 2008-03-13 2012-06-27 帝人ファイバー株式会社 ポリエチレンナフタレート繊維及びそれからなる短繊維不織布
JP2011195978A (ja) * 2010-03-18 2011-10-06 Teijin Fibers Ltd 湿式不織布用熱接着性複合繊維およびその製造方法
JPWO2012057105A1 (ja) * 2010-10-27 2014-05-12 帝人株式会社 バイオマス由来ポリエステル短繊維およびそれからなる湿式不織布
WO2012114829A1 (fr) * 2011-02-23 2012-08-30 東レ株式会社 Matériau composite renforcé par des fibres
JP5830785B2 (ja) * 2011-06-28 2015-12-09 萩原工業株式会社 コンクリート補強用連結糸及びその製造方法
JP4945004B2 (ja) * 2011-08-22 2012-06-06 帝人ファイバー株式会社 エアレイド不織布用ポリエステル系繊維の製造方法
JP6077370B2 (ja) * 2013-04-05 2017-02-08 帝人株式会社 熱接着性複合繊維
US10577734B2 (en) * 2013-07-03 2020-03-03 Low & Bonar Nonwoven material
US9968435B2 (en) * 2013-07-10 2018-05-15 Terumo Kabushiki Kaisha Body lumen graft base, production method of body lumen graft base, and body lumen graft using the same
JP6298697B2 (ja) * 2014-04-18 2018-03-20 Ｋｂセーレン株式会社 複合繊維および布帛
JP6731284B2 (ja) * 2016-05-30 2020-07-29 Ｅｓファイバービジョンズ株式会社 熱融着性複合繊維およびその製造方法、これを用いた不織布
US11225738B2 (en) 2017-06-09 2022-01-18 Toyobo Co., Ltd. Long-fiber nonwoven fabric and filter reinforcement material using the same
CN113827762A (zh) * 2020-06-24 2021-12-24 上海清白香环保科技有限公司 一种抑制有害微生物滋生的医用敷料
CN112095230B (zh) * 2020-08-15 2022-09-13 福建冠泓工业有限公司 一种超柔超蓬松纺粘无纺布及其制备方法

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3531368A (en) * 1966-01-07 1970-09-29 Toray Industries Synthetic filaments and the like
JPS56159340A (en) * 1980-05-09 1981-12-08 Asahi Chemical Ind Production of polyester nonwoven fabric
DE3271192D1 (en) * 1981-11-23 1986-06-19 Ici Plc Process of melt spinning of a blend of a fibre-forming polymer and an immiscible polymer and melt spun fibres produced by such process
FI74738C (fi) * 1986-05-09 1988-03-10 Outokumpu Oy Foerfarande och anordning foer att minska stoftagglomerater vid behandling av gaser av smaeltningsugnen.
US4908052A (en) * 1987-04-20 1990-03-13 Allied-Signal Inc. Fibers and filters containing said fibers
AU615176B2 (en) * 1987-04-20 1991-09-26 Allied Corporation Improved fibers and filters containing said fibers
US5082720A (en) * 1988-05-06 1992-01-21 Minnesota Mining And Manufacturing Company Melt-bondable fibers for use in nonwoven web
US5069970A (en) * 1989-01-23 1991-12-03 Allied-Signal Inc. Fibers and filters containing said fibers
US6495656B1 (en) * 1990-11-30 2002-12-17 Eastman Chemical Company Copolyesters and fibrous materials formed therefrom
JP2599847B2 (ja) * 1991-08-13 1997-04-16 株式会社クラレ ポリエチレンテレフタレート系メルトブローン不織布とその製造法
DE4412969C1 (de) * 1994-04-14 1995-06-22 Inventa Ag PET-Fasern mit verbessertem Bausch und Verfahren zu ihrer Herstellung
US5948529A (en) * 1997-02-26 1999-09-07 Hna Holdings, Inc. Bicomponent fiber
US6231976B1 (en) * 1997-08-28 2001-05-15 Eastman Chemical Company Copolyester binder fibers
US6544455B1 (en) * 1997-12-22 2003-04-08 Kimberly-Clark Worldwide, Inc. Methods for making a biodegradable thermoplastic composition
US6686303B1 (en) * 1998-11-13 2004-02-03 Kimberly-Clark Worldwide, Inc. Bicomponent nonwoven webs containing splittable thermoplastic filaments and a third component
BR0010131B1 (pt) * 1999-04-30 2011-12-27 material nço tranÇado estirÁvel e mÉtodo para produzir o mesmo.
EP1200505B1 (fr) * 1999-08-06 2004-07-07 Eastman Chemical Company Polyesters a point de fusion controle, et fibres formees a partir desdits polyesters
US6855422B2 (en) * 2000-09-21 2005-02-15 Monte C. Magill Multi-component fibers having enhanced reversible thermal properties and methods of manufacturing thereof
JP3778808B2 (ja) * 2001-04-04 2006-05-24 帝人ファイバー株式会社 ポリエステル系熱接着性複合繊維およびその製造方法

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Publication number Publication date
KR20050009979A (ko) 2005-01-26
EP1516079A4 (fr) 2006-05-24
EP1516079A1 (fr) 2005-03-23
CN1545573A (zh) 2004-11-10
TWI303283B (en) 2008-11-21
AU2003244268A1 (en) 2004-01-06
CN1320180C (zh) 2007-06-06
JP2004027377A (ja) 2004-01-29
WO2004001108A1 (fr) 2003-12-31
DE60330562D1 (de) 2010-01-28
JP4027728B2 (ja) 2007-12-26
US20070098986A1 (en) 2007-05-03
TW200402485A (en) 2004-02-16
HK1067389A1 (en) 2005-04-08
US20040265577A1 (en) 2004-12-30

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