EP0528048A1 - Fibre composite a enveloppe poreuse - Google Patents

Fibre composite a enveloppe poreuse Download PDF

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Publication number
EP0528048A1
EP0528048A1 EP92905966A EP92905966A EP0528048A1 EP 0528048 A1 EP0528048 A1 EP 0528048A1 EP 92905966 A EP92905966 A EP 92905966A EP 92905966 A EP92905966 A EP 92905966A EP 0528048 A1 EP0528048 A1 EP 0528048A1
Authority
EP
European Patent Office
Prior art keywords
fiber
composite fiber
porous
sheath part
core part
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.)
Withdrawn
Application number
EP92905966A
Other languages
German (de)
English (en)
Other versions
EP0528048A4 (fr
Inventor
Isamu Ube-Nitto Kasei Co. Ltd. Takahashi
Yoshio Ube-Nitto Kasei Co. Ltd. Iida
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.)
Ube Exsymo Co Ltd
Original Assignee
Ube Nitto Kasei Co Ltd
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 Ube Nitto Kasei Co Ltd filed Critical Ube Nitto Kasei Co Ltd
Publication of EP0528048A1 publication Critical patent/EP0528048A1/fr
Publication of EP0528048A4 publication Critical patent/EP0528048A4/fr
Withdrawn legal-status Critical Current

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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
    • D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
    • 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
    • D04H1/42—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
    • D04H1/4334—Polyamides
    • 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
    • D04H1/4391—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
    • D04H1/43916—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 microcellular fibres, e.g. porous or foamed 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
    • 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

Definitions

  • the present invention relates to a composite fiber having a sheath part formed of porosized polyolefin-based synthetic resin, more particularly to a porous fiber having a fiber strength and processability with a carding machine, which may be put to practical use.
  • porous polyester fibers and the like having waterabsorption properties used as fibers for cloth which are provided with water absorption properties in order to improve the comfort of wear.
  • polyolefin-based fine porous fibers were developed for a variety of hollow fiber membranes for separation and used widely in the fields of medical equipment, industrial use and domestic use and the like. A number of these fine porous fibers have been developed, but there have been technical problems in controlling the shape or size of the pores.
  • hollow fibers having strip-shaped voids in a so-called lamellar stack made by spinning polypropylene or polyethylene at a comparatively low temperature under high draft to obtain hollow type fibers, and heat-treating and then stretching them to a given ratio, or stretching them at an extremely low temperature.
  • These fibers are, however, primarily used as hollow fiber membranes and the like and have a comparatively large denier and comparatively small pores so that they are not adequate for usages with make the most of functions such as liquid storage property and insulating property.
  • the inventors have studied porous fibers having comparatively low denier and found that the strength of the fibers are lowered remarkably with the increasing void percentage of porous fibers, which resultts in practical problems. Namely, in the case of a highly porosized fiber, the strength is much reduced so that when processed into non-woven fabrics, woven fabrics and the like the strength of the obtained fabrics are low. Further, even with a porous fiber having a void percentage of 30 to 50% made of high-density polyethylene, it is difficult to impart crimps in the manufacture process of the fiber. Therefore, there is the problem that when processing by a carding machine, the connection of webs is poor due to the sinkage of the fibers in the cylinder of the carding machine and thus uniform carding is impossible.
  • a polyethylene-based porous fiber should withstand use in boiling water and disinfection with steam.
  • a binder fiber comprising a polyethylene fiber and a composite fiber of polyethylene/polypropylene, processed with a carding machine to obtain webs and passing it through a heat roller such as an embossing roller and a calender roller to obtain a heat bonded non-woven fabric
  • a heat roller such as an embossing roller and a calender roller to obtain a heat bonded non-woven fabric
  • a whole porous fiber is influenced by a shrinkage from a temperature of about 130°C and the void percentage is lowered so that it is impossible to raise the surface temperature of the heat roller to 120 °C or more even if the web is made by mixing binder fibers and thus the productivity of non-woven fabrics is low.
  • the inventors have developed a polyolefin-based porous fiber having strength for practical use and excellent ability to pass through a carding machine which may withstand a higher temperature when being processed into non-woven fabric or used as a non-woven fabric .
  • the composite fiber of the present invention comprises a sheath and core type composite fiber consisting of a sheath part formed of porosized polyolefin-based synthetic resin and a non-porous core part, and is basically characterized in that the apparent cross-sectional area of the sheath part is from 20 to 80% of the entire cross-sectional area of the fiber.
  • the polyolefin resin that can be used in the present invention is preferably polyethylene or polypropylene.
  • polyethylene preferred is a high-density polyethylene (hereinafter referred to as "HDPE") having a melt flow rate (MFR) value, measured by a method according to ASTM D1238, of 0.3 to 20g/10 min.
  • HDPE high-density polyethylene
  • MFR melt flow rate
  • a preferred polypropylene is a polypropylene having a density of about 0.90 or more and an MFR value, measured by said measurement method, in the range of 0.5 to 20g/10 min.
  • the melt viscosity is incorrect when melt-spinning after the polyolefin resin is mixed with paraffin wax, and a problem arises in the spinning.
  • the porosization of the sheath part is established by mixing paraffin wax essentially comprising saturated aliphatic or hydrocarbon compounds, spinning and extracting the paraffin wax by a solvent in melt-spinning of the sheath part.
  • the resin component used in the core part of the composite fiber of the present invention is a polyolefin resin such as a homopolymer or a copolymer such as high-density polyethylene or polypropylene and the like, or nylon having a low melting point or polyester having a low melting point, these melting points being different from that of the HDPE of the sheath part by less than 70°C.
  • Polypropylene homopolymer is preferable from the viewpoint of fiber physical properties and the suitability for composite spinning.
  • the ratio of cross-sectional area of the sheath to the core part should be controlled so that the apparent cross-sectional area of the sheath part is 20 to 80% of the entire cross-sectional area of the fiber. If the apparent cross-sectional area is less than 20%, the rate of the porous part is low and the function of the porous fiber cannot be fulfilled. If the apparent cross-sectional area exceeds 80%, the strength retention by the core part becomes insufficient and thus strength for practical uses can not be obtained.
  • the apparent cross-sectional area of the sheath part of the present invention is the cross-sectional area defined by the diameter of the sheath part and the perimeter of the core part containing the pore part.
  • the entire cross-sectional area of the fiber is the sum of the above apparent cross-sectional area of the sheath part and the cross-sectional area of the core part.
  • the composite fiber having a porous sheath part of the present invention comprises a porous sheath part and a solid core part so that crimp impartment is sufficient since the crimp is imparted to the core part in crimp processing. Further, since the strength may be ensured by the core part and interlocking between the single fibers may be possible, previous problems in relation to carding suitability and strength may be solved
  • the composite fiber of the present invention comprises a porous sheath part and a solid core part
  • the core part suppresses the shrinkage when heated.
  • the shrinkage of the porous sheath part is smaller than that of a fiber consisting of a whole porous part and the decrease in the void percentage of the porous sheath part on heating is small.
  • the heat resistance of the overall composite fiber is improved.
  • polypropylene having a MFR value of 80g/10 min. (UBE KOSAN Co., Ltd.: TS365) was used.
  • a sheath-core type composite spinning machine comprising two extruders each having a screw diameter of 32mm and being equipped with 0.4mm ⁇ 500 holes of nozzle for composite fibers, the extruder for the sheath part being fed by the material for the sheath part, an unstretched yarn having a denier of 10 was spun at a nozzle temperature of 170 °C at a spinning rate of 400m/min. with a ratio of cross-sectional areas of sheath part to core part of 5:5.
  • the void percentage was about 15% when paraffin wax was extracted at this stage.
  • the unstretched yarn was combined to have about 20,000 denier and stretched to four times at 100 °C with stretching rollers at a rate of 8m/min. of a first stretching roller and at a rate of 32m/min of a second stretching roller and taken up by a bobbin.
  • the yarn which remained wound around the bobbin was then heat-treated at a constant length in an oven at 100°C for one hour, and crimped with a stuffing box type crimper so as to impart 12 crimps/inch.
  • the fiber was cut to about 51 mm to form staple fiber, and put into a soxhlet extractor to extract the paraffin wax in the sheath part by n-hexane to porosize the sheath part.
  • the thus obtained composite fiber had a denier of 2.5,a tensile strength of 2.59g/d, a tensile strain of 180%, a crimps number of 12.5 crimps/inch and a void percentage of 35.3%.
  • the fiber was examined as to its ability to pass through a carding machine by passing it through a test carding machine (Yamato Kiko Co., Ltd.: SC-360 DR). This showed that it was excellent and that it was a practically usable fiber from the viewpoint of the strength.
  • An unstretched yarn having a denier of 10 was spun in the same manner as in Example 1 using the same raw material for the sheath part and the same raw material for the core part except that the ratio of cross-sectional area of the sheath to core was 8:2 and the nozzle temperature was 160 °C. After the yarn was stretched, heat-treated, crimped and cut, it was placed in a soxhlet extractor in the same manner as in Example 1 to porosize the sheath part similarly.
  • the fiber thus obtained had a denier of 2.1, a strength of 1.96g/d, a strain of 86%, a crimp number of 13 crimps/inch and a void percentage of 48.8%.
  • the fiber was examined as to its ability to pass through a carding machine. As a result, some hanging of web was observed as compared to Example 1, but the ability to pass was considered to be no problem.
  • Fibers having a ratio of core part of 7:3 (Example 3)and a ratio of core part of 2:8 (Example 4) were spun using the same raw material for the sheath part as in example 1 and polypropylene having an MFR value of 48 (UBE KOSAN Co., Ltd.:ZS-1238) as a raw material for the sheath part.
  • the spinning conditions of Examples 3 and 4 were the same as those in Example 1 except that the nozzle temperature in Example 4 was 200 °C.
  • the composite fiber thus-obtained in Example 3 had a denier of 2.2, a strength of 2.15g/d, a strain of 95% and a void percentage of 46.5%.
  • the composite fiber thus-obtained in Example 4 had a denier of 3.1, a strength of 3.10g/d, a strain of 150% and a void percentage of 17.0%. Both had excellent aptitudes for the carding machine.
  • a composite fiber was obtained in the same manner as in Example 1 except that an unstretched yarn having a denier of 10 was obtained using the same raw material for the sheath part as in Example 1 and a nylon having a low meltingpoint of 176 to 180°C (UBE KOSAN Co., Ltd.: 3035U) for the core part at a ratio of the sheath to core of 5:5 at a nozzle temperature of 170°C.
  • an unstretched yarn having a denier of 10 was obtained using the same raw material for the sheath part as in Example 1 and a nylon having a low meltingpoint of 176 to 180°C (UBE KOSAN Co., Ltd.: 3035U) for the core part at a ratio of the sheath to core of 5:5 at a nozzle temperature of 170°C.
  • the composite fiber had a denier of 2.4, a strength of 2.36g/d, a strain of 180%, a void percentage of 33.8% and an excellent ability to pass through a carding machine.
  • a porous fiber was obtained in the same manner as in Example 1 except that an unstretched yarn having a denier of 10 was spun using an extruder having a screw diameter of 25 mm and being equipped with 0.4mm x 160 holes of nozzle without using a composite spinning apparatus and then stretched to a stretch ratio of three times (Comparative Example 1), and four times (Comparative Example 2).
  • the fiber thus-obtained in Comparative Example 1 had a denier of 2.2, a strength of 1.10g/d, a strain of 270% and a void percentage of 45%.
  • the fiber thus-obtained in the Comparative Example 2 had a denier of 1.7, a strength of 1.74g/d, a strain of 130% and a void percentage of 37%.
  • the abilities to pass through a carding machine of both fibers obtained in Comparative Examples 1 and 2 were quite poor so that separate carding was difficult.
  • polypropylene having an MFR value of 48 (UBE KOSAN Co., Ltd. : ZS-1238) was used.
  • a sheath-core type composite spinning machine consisting of two extruders having a screw diameter of 32mm and being equipped with composite nozzle of 0.4mm ⁇ 500 holes, the extruder for the sheath part was fed by the raw material for the sheath part, an unstretched yarn having a denier of 10 was spun at a nozzle temperature of 200°C , at a spinning rate of 400m/min. with a ratio of cross-sectional areas of sheath part to core part of 8:2.
  • the unstretched yarn was combined to have a denier of about 20,000 and stretched to four times at 100°C with stretching rollers at a first stretching roller rate of 8m/min, and at a second stretching roller rate of 32m/min and taken up by a bobbin.
  • the fiber which remained wound around the bobbin was heat-treated at a constant length for one hour in an oven at 130 °C, and crimped with a stuffing box type crimper so as to impart 12 crimps/inch.
  • the fiber was then cut to about 51 mm to form staple fibers, and put into a soxhlet extractor to extract the paraffin wax in the sheath part from n-hexane to porosize the sheath part.
  • the thus obtained composite fiber had a tensile strength of 2.2, a strain of 360% and a void percentage of 25%.
  • the carding characteristics were excellent.
  • a porous fiber was obtained in the same manner as in Example 6 except that an unstretched yarn was spun having a denier of 10 at a nozzle temperature of 175°C with a extruder having a screw diameter of 25mm being equipped with a nozzle of 0.4mm ⁇ 160 holes, using the material for the sheath part as used in Example 6 and without the composite spinning system and that the stretch ratio of the yarn was three times.
  • the fiber thus obtained had a strength of 1.9g/d, a strain of 450% and a void percentage of 26%.
  • the fibers obtained in the Examples had equal or more void percentages even though the paraffin wax contents were small.
  • the fibers of Example 2 had a void percentage of 48.8% at 40% of paraffin wax.
  • the fibers of Comparative Example 1 had a void percentage of 45 % at 50% of paraffin wax, i.e. the sheath part of the Example 2 had a void percentage of 61%.
  • the reason may be considered as follows. It is estimated that since a polypropylene component having a high melting point was added when spinning there is a need to raise the spinning temperature so that the porous sheath part is spun in the direction towards the less cooled part to slowly could in spinning, and then the growth of lamellar crystals is promoted.
  • composite fibers having a sheath part according to the present invention have a high strength, an improved aptitude for carding and a resistance to high temperature so that they may be used as a raw material for filters for high temperature liquids and for non-woven fabrics which may be sterilised at a high temperature.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Multicomponent Fibers (AREA)

Abstract

Fibre composite présentant une résistance suffisante pour l'usage pratique, se prêtant facilement au cardage et résistant à une température élevée lors de son élaboration ou de son utilisation sous forme de tissu non tissé, pourvue d'une enveloppe composée d'une résine synthétique de la série des polyoléfines poreuses. L'âme est non poreuse. Un profil en coupe fait apparaître une enveloppe représentant 20 à 80 % de la surface totale de la coupe transversale. Ladite résine synthétique de la série des polyoléfines, est de préférence un polyéthylène ou un polypropylène de haute densité. Cette résine est rendue poreuse en la mélangeant à de la cire paraffine, laquelle est ensuite extraite après le filage. L'âme est constituée de résine polypropylène, de nylon à point de fusion bas, et de polyester à point de fusion bas.
EP19920905966 1991-03-05 1992-03-05 Fibre composite a enveloppe poreuse. Withdrawn EP0528048A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6237391 1991-03-05
JP62373/91 1991-03-05

Publications (2)

Publication Number Publication Date
EP0528048A1 true EP0528048A1 (fr) 1993-02-24
EP0528048A4 EP0528048A4 (fr) 1994-03-18

Family

ID=13198253

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920905966 Withdrawn EP0528048A4 (fr) 1991-03-05 1992-03-05 Fibre composite a enveloppe poreuse.

Country Status (2)

Country Link
EP (1) EP0528048A4 (fr)
WO (1) WO1992015734A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1553223A4 (fr) * 2002-10-17 2007-05-30 Unitika Ltd Tissu non tisse constitue d'une fibre composite de type ame/gaine et son procede de fabrication
CN106948028A (zh) * 2017-02-17 2017-07-14 武汉纺织大学 多孔皮芯复合纤维及其制备方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3246787B2 (ja) 1993-03-10 2002-01-15 宇部日東化成株式会社 多孔質繊維を用いた不織布およびその製造方法
JPH07130347A (ja) * 1993-10-28 1995-05-19 Ube Nitto Kasei Co Ltd バッテリセパレータ
JP3288508B2 (ja) * 1993-11-17 2002-06-04 日本バイリーン株式会社 多孔質繊維の製造方法
BR112016023646A2 (pt) 2014-04-10 2017-08-15 3M Innovative Properties Co fibras e artigos as que incluem
EP3516100A4 (fr) * 2016-09-26 2020-03-04 The Board of Trustees of the Leland Stanford Junior University Textiles tissés à base de fibres polymères transparents au rayonnement infrarouge pour le refroidissement du corps humain

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342811A (en) * 1979-12-28 1982-08-03 Albany International Corp. Open-celled microporous sorbent-loaded textile fibers and films and methods of fabricating same
JPS5943118A (ja) * 1982-08-31 1984-03-10 Chisso Corp ポリオレフイン発泡繊維およびその製造方法
JPS5976919A (ja) * 1982-10-22 1984-05-02 Chisso Corp 可染性発泡ポリオレフイン繊維及びその製造方法
JPS6028565A (ja) * 1983-07-22 1985-02-13 チッソ株式会社 不織布
JPS60139815A (ja) * 1983-12-28 1985-07-24 Mitsubishi Rayon Co Ltd 複合中空糸及びその製造方法
JPS60210425A (ja) * 1984-04-04 1985-10-22 Mitsui Petrochem Ind Ltd ポリエチレン延伸物の製造方法
JPS60232927A (ja) * 1984-05-07 1985-11-19 Mitsui Petrochem Ind Ltd ポリエチレンの延伸物の製造法
JPH0192414A (ja) * 1987-03-02 1989-04-11 Ube Nitto Kasei Co Ltd 脱臭性複合繊維
JP2550204B2 (ja) * 1990-05-01 1996-11-06 宇部日東化成 株式会社 多孔質繊維の製造方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1553223A4 (fr) * 2002-10-17 2007-05-30 Unitika Ltd Tissu non tisse constitue d'une fibre composite de type ame/gaine et son procede de fabrication
CN100519873C (zh) * 2002-10-17 2009-07-29 尤尼吉可株式会社 芯鞘状复合纤维构成的无纺布及其制造方法
CN106948028A (zh) * 2017-02-17 2017-07-14 武汉纺织大学 多孔皮芯复合纤维及其制备方法

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