EP3299500B1 - Hygroscopic core-sheath conjugate yarn and production method therefor - Google Patents
Hygroscopic core-sheath conjugate yarn and production method therefor Download PDFInfo
- Publication number
- EP3299500B1 EP3299500B1 EP16799810.3A EP16799810A EP3299500B1 EP 3299500 B1 EP3299500 B1 EP 3299500B1 EP 16799810 A EP16799810 A EP 16799810A EP 3299500 B1 EP3299500 B1 EP 3299500B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- sheath
- false
- sheath composite
- composite fiber
- 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.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title description 3
- 239000000835 fiber Substances 0.000 claims description 110
- 239000002131 composite material Substances 0.000 claims description 66
- 239000004744 fabric Substances 0.000 claims description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 238000009835 boiling Methods 0.000 claims description 38
- 229920006146 polyetheresteramide block copolymer Polymers 0.000 claims description 27
- 229920002647 polyamide Polymers 0.000 claims description 22
- 239000004952 Polyamide Substances 0.000 claims description 21
- 229920000642 polymer Polymers 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000004900 laundering Methods 0.000 description 39
- 229920002292 Nylon 6 Polymers 0.000 description 31
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 28
- 230000003578 releasing effect Effects 0.000 description 26
- 230000001105 regulatory effect Effects 0.000 description 21
- 238000009987 spinning Methods 0.000 description 20
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 19
- 230000014759 maintenance of location Effects 0.000 description 19
- 238000012545 processing Methods 0.000 description 18
- 238000011156 evaluation Methods 0.000 description 16
- 229940032330 sulfuric acid Drugs 0.000 description 14
- -1 poly(ethylene oxide) Polymers 0.000 description 13
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 10
- 239000004615 ingredient Substances 0.000 description 9
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical compound OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 description 8
- 239000000306 component Substances 0.000 description 8
- 229920001778 nylon Polymers 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 229920005992 thermoplastic resin Polymers 0.000 description 7
- 206010016322 Feeling abnormal Diseases 0.000 description 6
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 6
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 6
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 6
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 6
- 239000004677 Nylon Substances 0.000 description 5
- 125000003277 amino group Chemical group 0.000 description 5
- 238000009940 knitting Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 4
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
- 229920000305 Nylon 6,10 Polymers 0.000 description 3
- 229920000572 Nylon 6/12 Polymers 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 229920001400 block copolymer Polymers 0.000 description 3
- 239000008358 core component Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- PBLZLIFKVPJDCO-UHFFFAOYSA-N 12-aminododecanoic acid Chemical compound NCCCCCCCCCCCC(O)=O PBLZLIFKVPJDCO-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229920000571 Nylon 11 Polymers 0.000 description 2
- 229920000299 Nylon 12 Polymers 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000001361 adipic acid Substances 0.000 description 2
- 235000011037 adipic acid Nutrition 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 150000001991 dicarboxylic acids Chemical class 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 238000009998 heat setting Methods 0.000 description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 2
- 150000002433 hydrophilic molecules Chemical class 0.000 description 2
- 150000003951 lactams Chemical class 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002074 melt spinning Methods 0.000 description 2
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 description 2
- 238000006068 polycondensation reaction Methods 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000001953 sensory effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- GUOSQNAUYHMCRU-UHFFFAOYSA-N 11-Aminoundecanoic acid Chemical compound NCCCCCCCCCCC(O)=O GUOSQNAUYHMCRU-UHFFFAOYSA-N 0.000 description 1
- QFGCFKJIPBRJGM-UHFFFAOYSA-N 12-[(2-methylpropan-2-yl)oxy]-12-oxododecanoic acid Chemical compound CC(C)(C)OC(=O)CCCCCCCCCCC(O)=O QFGCFKJIPBRJGM-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- CNGYZEMWVAWWOB-VAWYXSNFSA-N 5-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-[(e)-2-[4-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]ethenyl]benzenesulfonic acid Chemical compound N=1C(NC=2C=C(C(\C=C\C=3C(=CC(NC=4N=C(N=C(NC=5C=CC=CC=5)N=4)N(CCO)CCO)=CC=3)S(O)(=O)=O)=CC=2)S(O)(=O)=O)=NC(N(CCO)CCO)=NC=1NC1=CC=CC=C1 CNGYZEMWVAWWOB-VAWYXSNFSA-N 0.000 description 1
- SLXKOJJOQWFEFD-UHFFFAOYSA-N 6-aminohexanoic acid Chemical compound NCCCCCC(O)=O SLXKOJJOQWFEFD-UHFFFAOYSA-N 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical class NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920001634 Copolyester Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229920003189 Nylon 4,6 Polymers 0.000 description 1
- 229920002614 Polyether block amide Polymers 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- 229920001074 Tenite Polymers 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 229960002684 aminocaproic acid Drugs 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 229920001477 hydrophilic polymer Polymers 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- AHHWIHXENZJRFG-UHFFFAOYSA-N oxetane Chemical compound C1COC1 AHHWIHXENZJRFG-UHFFFAOYSA-N 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920006306 polyurethane fiber Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
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
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
-
- 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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
-
- 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
- D01D7/00—Collecting the newly-spun products
-
- 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
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
- D02G1/0286—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist characterised by the use of certain filaments, fibres or yarns
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
- D03D15/47—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads multicomponent, e.g. blended yarns or threads
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/06—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyethers
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/02—Moisture-responsive characteristics
Definitions
- the present invention relates to a hygroscopic core-sheath composite fiber which is excellent in terms of feeling.
- Synthetic fibers including thermoplastic resins such as polyamides and polyesters are excellent in terms of strength, chemical resistance, heat resistance, etc., and are hence used extensively in clothing applications, industrial applications, etc.
- polyamide fibers not only have properties such as the peculiar softness, high tensile strength, colorability by dyeing, and high heat resistance but also have excellent hygroscopicity, and are hence in extensive use in applications such as inner wear and sportswear.
- polyamide fibers are insufficient in hygroscopicity as compared with natural fibers such as cotton, and have problems such as stuffiness and stickiness. There is hence a problem in that the polyamide fibers are inferior in comfortableness to natural fibers.
- Patent Document 1 proposes a method in which polyvinylpyrrolidone is blended as a hydrophilic polymer with a polyamide and the blend is spun to thereby improve the hygroscopicity.
- a fiber is made to have a core-sheath structure in which a highly hygroscopic thermoplastic resin is used as the core and a thermoplastic resin having excellent mechanical properties is used as the sheath, thereby attaining both hygroscopicity and mechanical properties.
- Patent Document 2 describes a core-sheath composite fiber which has a shape including a core and a sheath, the core being unexposed on the fiber surface, in which the core is a polyether-block-amide copolymer including nylon-6 as a hard segment, the sheath is a nylon-6 resin, and the areal proportion between the core and the sheath in a fiber cross-section is 3/1 to 1/5.
- Patent Document 3 describes a core-sheath composite fiber including a polyetheresteramide as the core and a polyamide as the sheath and having high hygroscopicity, as a core-sheath type composite fiber having excellent hygroscopicity.
- This composite fiber is a core-sheath type composite fiber including a thermoplastic resin as the core and a fiber-forming polyamide resin as the sheath, in which the main component of the thermoplastic resin constituting the core is a polyetheresteramide and the proportion of the core is 5-50% by weight of the overall weight of the composite fiber.
- Patent Document 4 describes a composite fiber having moisture absorbing/releasing properties, which includes a polyamide or a polyester as a sheath component and a water-absorbing thermoplastic resin including crosslinked poly(ethylene oxide) as a core component. Described therein is a highly hygroscopic core-sheath composite fiber including a highly hygroscopic water-insoluble modified poly(ethylene oxide) disposed as the core and a polyamide disposed as the sheath.
- Patent Document 5 discloses a composite false twist textured yarn obtained by subjecting a polyester-based filament yarn having > 1 % moisture-absorbing and releasing parameter AMR and comprising a fiber containing >5wt.% copolyester having a copolymerized hydrophilic compound and containing at least either one in a polar group containing compound and a crosslinking agent or a fiber containing >5wt.% polyether ester amide or mixture of a polyether ester amide with other thermoplastic resin to composite false twist processing with other filament yarn.
- a crimped conjugated fiber is disclosed in Patent Document 6.
- Patent Document 1 has a problem in that although this fiber has moisture absorbing/releasing properties substantially comparable to those of natural fibers, the performance is not fully satisfactory, and even higher moisture absorbing/releasing properties are required to be attained.
- the core-sheath composite fibers of Patent Documents 2 to 4 have moisture absorbing/releasing properties equal to or higher than those of natural fibers.
- the core deteriorates due to repetitions of practical use, and there has been a problem in that the hygroscopicity decreases with repetitions of use.
- fabrics formed therefrom have softness equal to that of nylons and are hence insufficient in feeling. A soft feeling superior to that of any existing article has been strongly desired.
- An object of the present invention is to provide a core-sheath composite fiber which overcomes the problems of the background-art techniques, and which is capable of attaining: comfortableness superior to that of natural fibers with high hygroscopicity; laundering durability of the hygroscopicity, which makes the fiber withstand practical use; and a soft feeling that has been impossible so far.
- the present invention includes the following configurations.
- a core-sheath composite fiber which is capable of attaining: comfortableness superior to that of natural fibers with high hygroscopicity; laundering durability of the hygroscopicity, which makes the fiber withstand practical use; and a soft feeling that has been impossible so far.
- the core-sheath composite fiber of the present invention employs a polyamide as the sheath and a thermoplastic polymer having high hygroscopicity as the core.
- thermoplastic polymer having high hygroscopicity as the core means a polymer which, when examined in a pellet form, has a ⁇ MR of 10% or higher, and examples thereof include polyetheresteramide copolymers, poly(vinyl alcohol), and cellulosic thermoplastic resins. Of these, a polyetheresteramide copolymer is used from the standpoint that this polymer has satisfactory thermal stability and satisfactory compatibility with the polyamide as the sheath and has excellent separation resistance.
- the fiber can be made to have a high ⁇ MR, and a textile which has excellent hygroscopicity and is comfortable can be achieved.
- ⁇ MR is an index to humidity regulation, and is expressed by the difference in the coefficient of moisture absorption between an in-garment temperature and humidity condition during light to medium works or light to medium exercises which is represented by 30°C ⁇ 90% RH and an outside-air temperature and humidity condition represented by 20°C ⁇ 65% RH. The larger the ⁇ MR, the higher the hygroscopicity and the better the comfortableness during wear.
- the polyetheresteramide copolymer is a block copolymer which has an ether linkage, an ester linkage, and an amide linkage in the same molecular chain. More specifically, the copolymer is a block copolymer obtained by subjecting a polyamide ingredient (A) including one or more members selected from among lactams, aminocarboxylic acids, and salts of diamines with dicarboxylic acids and a polyetherester ingredient (B) including a dicarboxylic acid and a poly(alkylene oxide) glycol to polycondensation reaction.
- A polyamide ingredient
- B including a dicarboxylic acid and a poly(alkylene oxide) glycol
- polyamide ingredient (A) examples include lactams such as ⁇ -caprolactam, dodecanolactam, and undecanolactom, ⁇ -aminocarboxylic acids such as aminocaproic acid, 11-aminoundecanoic acid and 12-aminododecanoic acid, and diamine-dicarboxylic acid nylon salts which are precursors for nylon-66, nylon-610, nylon-612, etc.
- a preferred polyamide-forming ingredient is ⁇ -caprolactam.
- the polyetherester ingredient (B) is an ingredient including a dicarboxylic acid having 4-20 carbon atoms and a poly(alkylene oxide) glycol.
- the dicarboxylic acid having 4-20 carbon atoms include aliphatic dicarboxylic acids such as succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid and dodecanedioic acid, aromatic dicarboxylic acids such as terephthalic acid, isophthalic acid and 2,6-naphthalenedicarboxylic acid, and alicyclic dicarboxylic acids such as 1,4-cyclohexanedicaroxylic acid; one of these or a mixture of two or more thereof can be used.
- Preferred dicarboxylic acids are adipic acid, sebacic acid, dodecanedioic acid, terephthalic acid, and isophthalic acid.
- Examples of the poly(alkylene oxide) glycol include polyethylene glycol, poly(1,2- and 1,3-propylene oxide) glycol, poly(tetramethylene oxide) glycol, and poly(hexamethylene oxide) glycol.
- Preferred is polyethylene glycol, which has especially satisfactory hygroscopicity.
- the number-average molecular weight of the poly(alkylene oxide) glycol is preferably 300-10,000, more preferably 500-5,000. In cases when the molecular weight of the poly(alkylene oxide) glycol is 300 or higher, this glycol is less apt to fly off from the system during the polycondensation reaction and a fiber having stable hygroscopicity is obtained. Such molecular weights are hence preferred. In cases when the molecular weight thereof is 10,000 or less, an even block copolymer is obtained to attain stable spinning. Such molecular weights are hence preferred.
- the proportion of the polyetherester ingredient (B) is 20-80% by mole. Proportions thereof not less than 20% are preferred because satisfactory hygroscopicity is obtained. Meanwhile, proportions thereof not higher than 80% are preferred because satisfactory color fastness and laundering durability are obtained.
- polyetheresteramide copolymer Commercial examples of such polyetheresteramide copolymer are “MH 1657” and “MV 1074", both manufactured by Arkema Inc.
- polyamide as the sheath examples include nylon-6, nylon-66, nylon-46, nylon-9, nylon-610, nylon-11, nylon-12, nylon-612, and the like and copolyamides including these nylons and comonomer components such as compounds having an amide-forming functional group, e.g., laurolactam, sebacic acid, terephthalic acid, isophthalic acid, and 5-sodiumsulfoisophthalic acid.
- amide-forming functional group e.g., laurolactam, sebacic acid, terephthalic acid, isophthalic acid, and 5-sodiumsulfoisophthalic acid.
- nylone-6 nylon-11, nylon-12, nylon-610, and nylon-612
- nylon-6 which has excellent dyeability.
- additives may have been copolymerized with or incorporated into the sheath polyamide in the present invention according to need in a total additive content in the range of 0.001-10% by weight.
- the additives include a delustering agent, flame retardant, antioxidant, ultraviolet absorber, infrared absorber, nucleator, fluorescent brightener, antistatic agent, hygroscopic polymer, and carbon.
- the core-sheath composite fiber of the present invention must have a degree of shrinkage with boiling water of 6-11%.
- a degree of shrinkage with boiling water thereof By regulating the degree of shrinkage with boiling water thereof so as to be within the specified range, a soft feeling which has not been attained with any conventional nylon is rendered possible in cases when a false-twist textured yarn is obtained from the core-sheath composite fiber and a textile is then obtained from the yarn.
- the degree of shrinkage with boiling water thereof is less than 6%, this core-sheath composite fiber has undergone crystallization before false twisting and, hence, cannot be crimped in false twisting, making it impossible to attain fluffiness and a soft feeling.
- the degree of shrinkage with boiling water thereof is higher than 11%, the shrinkage is so large that the textile may give a hard feeling.
- a more preferred range of the degree of shrinkage with boiling water is 6-10%, and an even more preferred range thereof is 7-9.5%.
- an oil is applied in two stages.
- an oil is essential for improving the smoothness and collectibility of fibers
- the degree of shrinkage with boiling water can be easily reduced by applying an aqueous solution (emulsion) to a filament which has been cooled and solidified and, after the lapse of a certain time period, applying an emulsion again. This is thought to be because the first-stage application simultaneously supplies water to the fiber and crystallization proceeds thereupon, and the second-stage oil supply ensures smoothness and collectibility.
- the time gap between the first-stage application and the second-stage application is 20 msec or longer, because this time gap makes it easy to regulate the degree of shrinkage with boiling water so as to be within the specified range according to the present invention.
- longer application time gaps are preferred, the longer gaps necessitate a prolongation of the step. It is therefore preferred to set a time gap while taking account of efficient production.
- the application time gap is 30 msec.
- the tension of the fiber during the oil application is in the range of 0.15-0.40 cN/dtex, because the orientation of the fiber is accelerated thereby.
- the fiber tension is measured at a position between the first-stage and second-stage oil application positions.
- the core-sheath composite fiber of the present invention has an elongation of 60-90%.
- the core-sheath composite fiber It is desirable to false-twist the core-sheath composite fiber from the standpoint of improving the softness, and an elongation of 60-90% is preferred for the false twisting because the crimp is less apt to change with the lapse of time or less apt to be weakened by repeated stretching and because the softness of the fiber can be further improved.
- the core-sheath composite fiber of the present invention is not particularly limited in total fineness and the number of filaments (in the case of long fibers) and in length and the number of crimp waves (in the case of short fibers), and can be made to have any desired cross-sectional shape in accordance with the intended use of the fabric to be obtained, etc.
- the core-sheath composite fiber of the present invention has, as a multifilament, a total fineness of 5-235 dtex and the number of filaments of 1-144.
- the cross-sectional shape preferably is circular, triangular, flat, Y-shaped, star-shaped, eccentric, or laminate-type.
- the proportion of the core in the core-sheath composite fiber of the present invention is preferably 20-80 parts by weight, more preferably 30-70 parts by weight, per 100 parts by weight of the composite fiber. By regulating the proportion thereof so as to be within that range, not only a satisfactory ⁇ MR is obtained but also the processability during false twisting is rendered satisfactory.
- Chips of the polyamide to be used as the sheath in the present invention have a sulfuric-acid relative viscosity of preferably 2.3-3.3, more preferably 2.6-3.3.
- chips of the polyetheresteramide copolymer to be used as the core in the present invention have an o-chlorophenol relative viscosity (OCP relative viscosity) of 1.2-2.0.
- OCP relative viscosity o-chlorophenol relative viscosity
- the core-sheath composite fiber of the present invention can be obtained by known techniques of melt spinning or composite spinning. Examples thereof are as follows.
- a polyamide (sheath) and a polyetheresteramide copolymer (core) are separately melted, and the melts are metered and transported with gear pumps, then put together to form a composite flow by an ordinary method so as to result in a core-sheath structure, and ejected from a spinneret.
- a cooling wind is blown against the resultant filament with a filament cooler, such as a chimney, thereby cooling the filament to room temperature.
- a filament cooler such as a chimney
- an oil is supplied in two stages, and the oiled filament is passed through take-up rollers.
- the peripheral speed of the take-up rollers is preferably 3,000-3,900 m/min.
- the filament which has passed through the take-up rollers is stretched preferably in a stretch ratio of 1.0-1.1 and is passed through the stretching rollers. Thereafter, the winder (winding device) is regulated so as to impose a winding tension which results in a preferred package form, and the filament is then wound up therewith.
- the false twisting can be conducted using a known technique such as friction processing, pin processing, or belt nip processing. When cost, etc. are taken into account, friction processing is preferred. When crimping performance is taken into account, pin processing is preferred. In any processing, it is preferred to set the elongation of the false-twisted textured yarn at 25-40%, when the change of the crimp with the lapse of time, processability in the false twisting, and the subsequent weaving or knitting are taken into account. It is preferred to perform heat setting at 140-170°C in order to obtain satisfactory crimp and to inhibit the crimp from changing with the lapse of time.
- the core-sheath composite fiber of the present invention is advantageously used in fabric and garments.
- the type of fabric it is possible to select woven fabric, knitted fabric, nonwoven fabric, etc. according to purposes, and clothing is also included.
- the garments can be various clothing products including inner wear and sportswear.
- a 0.25-g portion of a sample was dissolved in sulfuric acid having a concentration of 98% by weight, so that the sample amount was 1 g per 100 mL of the sulfuric acid.
- the solution was examined for flow time (T1) at 25°C.
- the sulfuric acid having a concentration of 98% by weight was examined alone for flow time (T2).
- T1 to T2 i.e., T1/T2 was taken as the sulfuric-acid relative viscosity.
- a 0.5-g portion of a sample was dissolved in o-chlorophenol so that the sample amount was 1 g per 100 mL of the o-chlorophenol.
- the solution was examined for flow time (T1) at 25°C.
- the o-chlorophenol was examined alone for flow time (T2).
- T1 to T2 i.e., T1/T2 was taken as the OCP relative viscosity.
- a fiber sample was set on a counter reel having a peripheral length of 1.125 m, and the counter reel was caused to make 200 revolutions to form a hank in a loop form.
- the hank was dried in a hot-air drying oven (105 ⁇ 2°C ⁇ 60 min) and then weighed with a balance. The measured mass was multiplied by an official moisture regain, and the fineness was calculated from the resultant product. The official moisture regain of the core-sheath composite fiber was taken as 4.5% by weight.
- a fiber sample was examined with "TENSILON” (registered trademark) UCT-100, manufactured by Orientec Co., Ltd., under the constant-speed stretching conditions shown in JIS L1013 ( Test Methods for Chemical-Fiber Filament Yarns, 2010 ).
- the elongation was determined from the tensile strength/elongation curve by obtaining the elongation at the point on the curve where a maximum strength was observed. Meanwhile, a value obtained by dividing the maximum strength by the fineness was taken as the strength. The measurement was made ten times, and average values were taken as the strength and the elongation.
- a hank of a fiber was taken, and the sample length S0 was measured under a load of 0.09 cN/dtex. Thereafter, the hank under no load was treated by immersion in boiling water for 15 minutes. After the treatment, the hank was air-dried and the sample length S1 was measured under a load of 0.09 cN/dtex.
- the recovery of stretchability is an index to the crimp properties of false-twisted textured yarns.
- a cylindrical knitted fabric was produced so as to result in a stitch density of 50.
- the fibers were suitably put together so that the fibers being supplied to the circular knitting machine had a total fineness of 50-100 dtex.
- a single yarn was supplied to the circular knitting machine and knitted so as to result in a stitch density of 50 as in the case shown above.
- An about 1-2 g portion of the cylindrical knitted fabric is weighed out and introduced into a weighing bottle, dried by holding it at 110°C for 2 hours, and then weighed (W0).
- the cylindrical knitted fabric was repeatedly laundered 20 times by the method No. 103 described in JIS L0217 (1995), appended table 1. Thereafter, this fabric was examined to calculate the ⁇ MR (moisture absorbing/releasing properties) in the manner described above.
- Fabrics having a ⁇ MR of 7.0% or larger were rated as S, and fabrics having a ⁇ MR of 5.0% or larger were rated as A.
- ⁇ MR after laundering was calculated as an index to a change in ⁇ MR through laundering, using the following equation. ⁇ MR after laundering / ⁇ MR before laundering ⁇ 100
- Fabrics having a retention of ⁇ MR of 95% or higher were rated as S, and fabrics which had a retention of ⁇ MR of 90% or higher and had laundering durability and which were regarded as giving satisfactory comfortableness during wear were rated as A. The others were rated as C.
- a core-sheath composite fiber of the present invention and a 22-dtex elastic polyurethane fiber were used to produce a bare plain knitted fabric using a 28G single circular knitting machine, and the knitted fabric was subjected to scouring, heat setting, dyeing, and finish setting to obtain a fabric.
- an ordinary, nylon-6, 44-dtex, 26-filament, false-twist textured yarn (CR, 26%) was prepared, and a bare plain knitted fabric was produced therefrom in the same manner as described above.
- the fabrics obtained were evaluated for feeling and compared. S and A were acceptable. S ... Far softer than the ordinary fabric formed using nylon-6. A ... Superior in softness to the ordinary fabric formed using nylon-6. C ... Equal to the ordinary fabric formed using nylon-6.
- the fabric In the case where all of the ⁇ MR after laundering, retention of ⁇ MR after laundering, and feeling of fabric were rated as S, the fabric not only had comfortableness with satisfactory moisture absorbing properties but also had excellent softness; the overall evaluation in this case was S. In the case where all these properties were rated as A or higher, the overall evaluation was A. In the case where any of those properties was rated as C, the overall evaluation was C.
- Tension values were measured using TENSION METER and FT-R pickup sensor, both manufactured by Toray Engineering Co., Ltd.
- Winding tension was determined by measuring the tension value (cN) between the second roller and the winder.
- a polyetheresteramide copolymer (MH 1657, manufactured by Arkema Inc.; o-chlorophenol relative viscosity, 1.69) including nylon-6 as a polyamide component and polyethylene glycol having a molecular weight of 1,500 as a polyether component (poly(alkylene oxide)glycol) in which the proportion of the polyether component was about 76% by mole was used for the core, and nylon-6 having a sulfuric-acid relative viscosity of 2.71 and a terminal amino group content of 5.95 ⁇ 10 -5 mol/g was used for the sheath.
- the polyetheresteramide copolymer and the nylon-6 were melted at 270°C and spun with a spinneret for concentric core-sheath formation so as to result in a core-sheath ratio (parts by weight) of 50/50.
- the terminal amino group content had been regulated with hexamethylenediamine and acetic acid during the polymerization.
- the rotational speeds of the gear pumps were set so as to give core-sheath composite fibers having a total fineness of 57 dtex, and the core ingredient and the sheath ingredient were each ejected at a rate of 19.6 g/min.
- the filaments ejected from the spinneret nozzle were cooled and solidified with a filament cooler, and were then subjected to first-stage oil application in which an oil emulsion having a concentration of 1% was applied thereto with an oiling device.
- the tension of the fibers at this moment was 0.30 cN/dtex.
- a second-stage oiling device was disposed at a position 2.0 m downstream from the first-stage oiling, and an oil emulsion having a concentration of 15% was used to conduct oil application. Thereafter, the fibers were temporarily taken up by a first roller which was rotating at a speed of 3,500 m/min, and were subsequently wound up, via a second roller which was rotating at the same speed, by a winder having a peripheral speed regulated to 3,430 m/min so as to result in a winding tension of 5 cN. In this case, the time gap between the first-stage oil application and the second-stage oil application was 34 msec.
- the core-sheath composite fibers obtained had the properties shown in Table 1. Thus, core-sheath composite fibers having a degree of shrinkage with boiling water of 8.5% and an elongation of 75% were obtained.
- the core-sheath composite fibers were processed under the conditions of a processing ratio of 1.3, processing speed of 400 m/min, and heater temperature 150°C, thereby obtaining a 44-dtex, 26-filament, false-twist textured yarn having an elongation of 34%. These false twisting conditions were common among the Examples and the Comparative Examples.
- the false-twist textured yarn obtained was evaluated and, as a result, was found to have a ⁇ MR of 12.1% and a ⁇ MR after laundering of 11.8%, that is, the retention of ⁇ MR was 98%.
- the yarn showed highly satisfactory moisture absorbing/releasing properties, and the moisture absorbing/releasing properties had highly satisfactory laundering durability.
- the fabric showed an excellent feeling and was superior in softness to the ordinary nylon. Consequently, the overall evaluation was S.
- the speeds of the first roller and second roller were regulated to 3,200 m/min, and spinning was conducted using the same positional relationship between the first stage and the second stage as in Example 1, i.e., 2.0 m. Namely, spinning was conducted in which the oil application time gap was 38 msec.
- the speed of the winder was regulated so as to result in a winding tension of 5 cN, as in Example 1.
- the polymer ejection rates were regulated so as to give a false-twist textured yarn having a fineness of 44 dtex.
- the core-sheath composite fibers obtained had the properties shown in Table 1.
- the degree of shrinkage with boiling water was 7.2%, and the elongation was 81%.
- False twisting was conducted in the same manner as in Example 1, except that the processing ratio was regulated to 1.35 so as to give a false-twist textured yarn having an elongation of 35%. Thus, a 44-dtex, 26-filament, false-twist textured yarn was obtained.
- the false-twist textured yarn obtained had a ⁇ MR after laundering of 11.2% and a retention of ⁇ MR of 97%.
- the yarn showed highly satisfactory moisture absorbing/releasing properties, and the moisture absorbing/releasing properties had highly satisfactory laundering durability.
- the fabric showed an excellent feeling and was superior in softness to the ordinary nylon. Consequently, the overall evaluation was S.
- the stretch ratio was regulated to 1.05. Namely, the speeds of the first roller and the second roller were regulated to 3,500 m/min and 3,675 m/min, respectively, to conduct spinning.
- the oil application time gap was the same as in Example 1, and the other conditions were set from the same standpoint as in Example 1.
- the core-sheath composite fibers obtained had the properties shown in Table 1.
- the degree of shrinkage with boiling water was 9.5%, and the elongation was 66.
- False twisting was conducted in the same manner as in Example 1, except that the processing ratio was regulated so as to give a false-twist textured yarn having an elongation of 35%. Thus, a 44-dtex, 26-filament, false-twist textured yarn was obtained.
- the false-twist textured yarn obtained had a ⁇ MR after laundering of 12.8% and a retention of ⁇ MR of 98%.
- the yarn showed highly satisfactory moisture absorbing/releasing properties, and the moisture absorbing/releasing properties had highly satisfactory laundering durability. Meanwhile, the feeling of the fabric was slightly rough and hard because the degree of shrinkage with boiling water of the core-sheath composite fibers was higher than that in Example 1. However, the fabric showed better softness than the fabric obtained using ordinary nylon-6. Consequently, the overall evaluation was A.
- the core-sheath composite fibers obtained had the properties shown in Table 1.
- the degree of shrinkage with boiling water was 6.1%, and the elongation was 69%.
- False twisting was conducted in the same manner as in Example 1, except that the processing ratio was regulated so as to give a false-twist textured yarn having an elongation of 35%. Thus, a 44-dtex, 26-filament, false-twist textured yarn was obtained.
- the false-twist textured yarn obtained had a ⁇ MR after laundering of 7.2% and a retention of ⁇ MR of 91%.
- the yarn showed highly satisfactory moisture absorbing/releasing properties. Meanwhile, it is thought that since the roller speed had been lower than that in Example 1, the orientation of the core-sheath composite fibers had been affected thereby and the composite fibers had a slightly poor retention of ⁇ MR. However, the moisture absorbing/releasing properties had satisfactory laundering durability. With respect to the feeling of the fabric, the crimp was slightly weak and the fabric was slightly poor in fluffiness, because the degree of shrinkage with boiling water was lower than that in Example 1. However, the fabric showed better softness than the fabric obtained using ordinary nylon-6. Consequently, the overall evaluation was A.
- the procedure was changed so that the core-sheath ratio (parts by weight) was 20/80, the speeds of the first roller and the second roller were 3,800 m/min each, and the second-stage oil application was conducted at a position 1.25 m downstream from the first-stage oil application. Namely, spinning was conducted in which the oil application time gap was 20 msec.
- the core-sheath composite fibers obtained had the properties shown in Table 1. The degree of shrinkage with boiling water was 10.8%, which was slightly high because the time gap had been set at a shorter period. The elongation was 58%.
- False twisting was conducted in the same manner as in Example 1, except that the processing ratio was regulated so as to give a false-twist textured yarn having an elongation of 35%. Thus, a 44-dtex, 26-filament, false-twist textured yarn was obtained.
- the false-twist textured yarn obtained had a ⁇ MR after laundering of 5.9% and a retention of ⁇ MR of 98%.
- the yarn showed satisfactory moisture absorbing/releasing properties, and the moisture absorbing/releasing properties had highly satisfactory laundering durability.
- the feeling of the fabric was slightly rough and hard because the degree of shrinkage with boiling water of the core-sheath composite fibers was higher than that in Example 1.
- the fabric showed better softness than the fabric obtained using ordinary nylon-6. Consequently, the overall evaluation was A.
- Example 2 Spinning was conducted in the same manner as in Example 1, except that nylon-6 having a sulfuric-acid relative viscosity of 3.30 and a terminal amino group content of 4.78 ⁇ 10 -5 mol/g was used for the sheath.
- the core-sheath composite fibers obtained had the properties shown in Table 1.
- the degree of shrinkage with boiling water was 9.3%, and the elongation was 70%.
- False twisting was conducted in the same manner as in Example 1, except that the processing ratio was regulated so as to give a false-twist textured yarn having an elongation of 35%. Thus, a 44-dtex, 26-filament, false-twist textured yarn was obtained.
- the false-twist textured yarn obtained had a ⁇ MR after laundering of 12.2% and a retention of ⁇ MR of 99%.
- the yarn showed highly satisfactory moisture absorbing/releasing properties, and the moisture absorbing/releasing properties had highly satisfactory laundering durability.
- the fabric showed an excellent feeling and was superior in softness to the ordinary nylon. Consequently, the overall evaluation was S.
- Example 2 Spinning was conducted in the same manner as in Example 1, except that nylon-6 having a sulfuric-acid relative viscosity of 2.40 and a terminal amino group content of 3.95 ⁇ 10 -5 mol/g was used for the sheath.
- the core-sheath composite fibers obtained had the properties shown in Table 1. The degree of shrinkage with boiling water was 6.7%, and the elongation was 84%.
- False twisting was conducted in the same manner as in Example 1, except that the processing ratio was regulated so as to give a false-twist textured yarn having an elongation of 35%. Thus, a 44-dtex, 26-filament, false-twist textured yarn was obtained.
- the false-twist textured yarn obtained had a ⁇ MR after laundering of 9.2% and a retention of ⁇ MR of 93%.
- the yarn showed highly satisfactory moisture absorbing/releasing properties.
- the sulfuric-acid relative viscosity had been lower than that in Example 1, the orientation of the core-sheath composite fibers had been affected thereby and the composite fibers had a slightly poor retention of ⁇ MR.
- the moisture absorbing/releasing properties had satisfactory laundering durability.
- the crimp was slightly weak and the fabric was slightly poor in fluffiness, because the degree of shrinkage with boiling water was lower than that in Example 1.
- the fabric showed better softness than the fabric obtained using ordinary nylon-6. Consequently, the overall evaluation was A.
- Spinning was conducted in which nylon-6 having a sulfuric-acid relative viscosity of 2.15 and a terminal amino group content of 4.70 ⁇ 10 -5 mol/g was used for the sheath, the speeds of the first roller and second roller were regulated to 4,000 m/min, and the positional relationship between the first stage and the second stage was the same as in Example 1, i.e., 2.0 m. Namely, spinning was conducted in which the oil application time gap was 30 msec.
- the core-sheath composite fibers obtained had the properties shown in Table 2. The degree of shrinkage with boiling water was 11.5%, and the elongation was 68%.
- False twisting was conducted in the same manner as in Example 1, except that the processing ratio was set so as to give a false-twist textured yarn having an elongation of 35%. Thus, a 44-dtex, 26-filament, false-twist textured yarn was obtained.
- the false-twist textured yarn obtained had a ⁇ MR after laundering of 7.5% and a retention of ⁇ MR of 70%. This yarn was poor in the laundering durability of moisture absorbing/releasing properties.
- the feeling of the fabric was considerably rough and hard because the degree of shrinkage with boiling water was higher than those in the Examples.
- the fabric obtained was nothing but one which was equal in feeling to the fabric obtained using ordinary nylon-6. Consequently, the overall evaluation was C.
- Spinning was conducted in which the speeds of the first roller and second roller were regulated to 4,200 m/min, and the positional relationship between the first stage and the second stage was the same as in Example 1, i.e., 2.0 m. Namely, spinning was conducted in which the oil application time gap was 7 msec.
- the core-sheath composite fibers obtained had the properties shown in Table 2. The degree of shrinkage with boiling water was 14.5%, and the elongation was 70%.
- False twisting was conducted in the same manner as in Example 1, except that the processing ratio was set so as to give a false-twist textured yarn having an elongation of 35%. Thus, a 44-dtex, 26-filament, false-twist textured yarn was obtained.
- the false-twist textured yarn obtained had a ⁇ MR after laundering of 10.6% and a retention of ⁇ MR of 96%.
- This yarn showed highly satisfactory moisture absorbing/releasing properties, and the moisture absorbing/releasing properties had highly satisfactory laundering durability. Meanwhile, the feeling of the fabric was considerably rough and hard because the degree of shrinkage with boiling water was higher than those in the Examples.
- the fabric obtained was nothing but one which was equal in feeling to the fabric obtained using ordinary nylon-6. The feeling was rated as C. Consequently, the overall evaluation was C.
- the core-sheath composite fibers obtained had the properties shown in Table 2.
- the degree of shrinkage with boiling water was 5.2%, and the elongation was 70%.
- False twisting was conducted in the same manner as in Example 1, except that the processing ratio was set so as to give a false-twist textured yarn having an elongation of 35%. Thus, a 44-dtex, 26-filament, false-twist textured yarn was obtained.
- the false-twist textured yarn obtained had a ⁇ MR after laundering of 11.5% and a retention of ⁇ MR of 96%. This yarn showed highly satisfactory moisture absorbing/releasing properties, and the moisture absorbing/releasing properties had highly satisfactory laundering durability. Meanwhile, with respect to the feeling of the fabric, the false-twist textured yarn had not been crimped because the degree of shrinkage with boiling water had been higher than those in the Examples and because the crystallization of the core-sheath composite fibers had proceeded. The fabric obtained was poor in fluffiness and was nothing but one which was equal in feeling to the fabric obtained using ordinary nylon-6. Consequently, the overall evaluation was C.
- Example 1 Example 2
- Example 3 Example 4
- Example 5 Example 6
- Example 7 Core component Polymer polyetheresteramide copolymer polyetheresteramide copolymer polyetheresteramide copolymer polyetheresteramide copolymer polyetheresteramide copolymer polyetheresteramide copolymer polyetheresteramide copolymer polyetheresteramide copolymer polyetheresteramide copolymer polyetheresteramide copolymer polyetheresteramide copolymer OCP relative viscosity 1.69 1.69 1.69 1.69 1.69 1.69 Sheath component Polymer nylon-6 nylon-6 nylon-6 nylon-6 nylon-6 Sulfuric-acid relative viscosity 2.71 2.71 2.71 2.71 2.71 3.30 2.40 Core-sheath ratio Core/sheath 50/50 50/50 50/50 30/70 20/80 50/50 50/50 Spinning conditions Oil application time gap between first stage and second stage (msec) 34 38 34 40 20 34 34 34 Fiber tension at first-stage oil application (cN
- the core-sheath composite fiber of the present invention high hygroscopicity, laundering durability of the hygroscopicity, which makes the fiber withstand practical use, and a soft feeling can be attained.
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KR102575877B1 (ko) * | 2015-11-10 | 2023-09-07 | 도레이 카부시키가이샤 | 흡습성, 주름방지성이 우수한 심초 복합 단면섬유 |
JPWO2021020354A1 (ko) * | 2019-07-31 | 2021-02-04 | ||
TW202300739A (zh) * | 2021-03-16 | 2023-01-01 | 大陸商東麗纖維研究所(中國)有限公司 | 複合纖維及其製備方法 |
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JPS5184921A (ja) * | 1975-01-17 | 1976-07-24 | Toray Industries | Kairyosaretahoriamidofukugoseni |
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JPS6410607A (en) * | 1987-07-03 | 1989-01-13 | Toshiba Corp | Panel-type radiator for electric apparatus |
JP3144092B2 (ja) * | 1992-10-26 | 2001-03-07 | 東レ株式会社 | 吸湿性に優れた芯鞘型複合繊維 |
TW317577B (ko) * | 1995-01-25 | 1997-10-11 | Toray Industries | |
JP3476577B2 (ja) | 1995-02-08 | 2003-12-10 | ユニチカ株式会社 | 吸放湿性を有する複合繊維 |
JPH0941204A (ja) * | 1995-07-31 | 1997-02-10 | Toray Ind Inc | 吸湿性に優れたストッキング |
JP3716517B2 (ja) | 1995-11-06 | 2005-11-16 | 東レ株式会社 | 高吸湿性ポリアミド繊維及びその製造方法 |
JPH09256224A (ja) * | 1996-03-22 | 1997-09-30 | Teijin Ltd | 吸湿性の改善された複合繊維、それよりなる混繊糸並びに布帛 |
JPH1018136A (ja) * | 1996-07-01 | 1998-01-20 | Toray Ind Inc | ポリエステル系複合仮ヨリ加工糸およびポリエステル系編織物 |
JP2006124851A (ja) | 2004-10-27 | 2006-05-18 | Toyobo Co Ltd | 高吸湿性ポリアミド異収縮混繊糸およびその製造方法 |
JP2006173969A (ja) * | 2004-12-15 | 2006-06-29 | Sony Corp | 全方向受光装置および赤外線受信装置 |
JP2007321295A (ja) * | 2006-06-01 | 2007-12-13 | Teijin Ltd | 捲縮複合繊維 |
WO2008123586A1 (ja) * | 2007-04-04 | 2008-10-16 | Kb Seiren, Ltd. | 制電性、吸水性及び接触冷感性に優れた複合繊維 |
CN101748512A (zh) * | 2008-12-10 | 2010-06-23 | 东丽纤维研究所(中国)有限公司 | 一种聚酯复合纤维及其生产方法 |
EP2554721B1 (en) * | 2010-03-31 | 2015-01-21 | Toray Industries, Inc. | Hygroscopic fibre, and manufacturing method for same |
JP6068470B2 (ja) | 2012-07-12 | 2017-01-25 | Kbセーレン株式会社 | 芯鞘複合繊維 |
CN103668536A (zh) * | 2012-09-13 | 2014-03-26 | 东丽纤维研究所(中国)有限公司 | 一种吸湿性纤维及其制造方法 |
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2016
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- 2016-05-11 KR KR1020177033113A patent/KR102465144B1/ko active IP Right Grant
- 2016-05-11 US US15/575,934 patent/US20180148863A1/en not_active Abandoned
- 2016-05-11 EP EP16799810.3A patent/EP3299500B1/en active Active
- 2016-05-11 CN CN201680029380.9A patent/CN107614765B/zh active Active
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- 2016-05-11 JP JP2016556911A patent/JP6090546B1/ja active Active
- 2016-05-11 WO PCT/JP2016/063971 patent/WO2016190102A1/ja active Application Filing
- 2016-05-19 TW TW105115491A patent/TWI693311B/zh active
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KR102465144B1 (ko) | 2022-11-10 |
EP3299500A4 (en) | 2018-12-26 |
HK1246374A1 (zh) | 2018-09-07 |
WO2016190102A1 (ja) | 2016-12-01 |
TWI693311B (zh) | 2020-05-11 |
US20180148863A1 (en) | 2018-05-31 |
CN107614765A (zh) | 2018-01-19 |
KR20180010185A (ko) | 2018-01-30 |
CN107614765B (zh) | 2020-04-03 |
JPWO2016190102A1 (ja) | 2017-06-15 |
AU2016266265B2 (en) | 2020-01-30 |
CA2986887A1 (en) | 2016-12-01 |
EP3299500A1 (en) | 2018-03-28 |
JP6090546B1 (ja) | 2017-03-08 |
AU2016266265A1 (en) | 2017-12-07 |
TW201704571A (zh) | 2017-02-01 |
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