WO2018012318A1 - 吸湿性に優れた海島型複合繊維、仮撚糸および繊維構造体 - Google Patents

吸湿性に優れた海島型複合繊維、仮撚糸および繊維構造体 Download PDF

Info

Publication number
WO2018012318A1
WO2018012318A1 PCT/JP2017/024110 JP2017024110W WO2018012318A1 WO 2018012318 A1 WO2018012318 A1 WO 2018012318A1 JP 2017024110 W JP2017024110 W JP 2017024110W WO 2018012318 A1 WO2018012318 A1 WO 2018012318A1
Authority
WO
WIPO (PCT)
Prior art keywords
sea
island
component
fiber
composite fiber
Prior art date
Application number
PCT/JP2017/024110
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
秀和 鹿野
省吾 ▲はま▼中
英樹 森岡
賢一 堤
望月　克彦
Original Assignee
東レ株式会社
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 東レ株式会社 filed Critical 東レ株式会社
Priority to EP17827448.6A priority Critical patent/EP3483312B1/en
Priority to KR1020187032728A priority patent/KR102391109B1/ko
Priority to SG11201811798RA priority patent/SG11201811798RA/en
Priority to CN201780039135.0A priority patent/CN109415846B/zh
Priority to US16/316,481 priority patent/US20190242033A1/en
Priority to JP2017549104A priority patent/JP6973079B2/ja
Publication of WO2018012318A1 publication Critical patent/WO2018012318A1/ja

Links

Images

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
    • 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
    • D01F8/16—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds 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
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; 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
    • 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
    • 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
    • D02G1/0206—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 by false-twisting
    • 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
    • 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
    • D03D15/44—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 with specific cross-section or surface shape
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
    • D04B1/16—Other fabrics or articles characterised primarily by the use of particular thread materials synthetic 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
    • D10B2401/00—Physical properties
    • D10B2401/02—Moisture-responsive characteristics
    • D10B2401/022—Moisture-responsive characteristics hydrophylic
    • 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
    • Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
    • Y10T442/444—Strand is a monofilament composed of two or more polymeric materials in physically distinct relationship [e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.] or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
    • Y10T442/45—Knit fabric is characterized by a particular or differential knit pattern other than open knit fabric or a fabric in which the strand denier is specified

Definitions

  • the present invention relates to a sea-island type composite fiber in which an island component is a hygroscopic polymer and has excellent hygroscopicity. More specifically, in hydrothermal treatment such as dyeing, cracking of the sea component accompanying the volume swelling of the hygroscopic polymer of the island component is suppressed. Since there is little generation of fluff and fluff, it is excellent in quality, and elution of a hygroscopic polymer is suppressed, it is excellent in hygroscopicity even after hot water treatment such as dyeing, and furthermore, when the sea component is polyester Relates to a sea-island type composite fiber that also has the original dry feeling of polyester fiber and can be suitably used for clothing applications.
  • Polyester fibers are used in a wide range of applications because they are inexpensive and have excellent mechanical properties and dry feeling. However, since it has poor hygroscopicity, it has problems to be solved from the viewpoint of wearing comfort, such as generation of stuffiness at high humidity in summer and generation of static electricity at low humidity in winter.
  • Patent Document 1 proposes a fiber using polyester obtained by copolymerizing polyethylene glycol as a hygroscopic polymer with respect to polyester.
  • a hygroscopic polymer is made into a single fiber to impart hygroscopicity to the polyester fiber.
  • Patent Document 2 proposes a core-sheath type composite fiber in which polyethylene glycol is copolymerized in the core and polyethylene terephthalate is arranged in the sheath.
  • a hygroscopic property is imparted to the polyester fiber by arranging a hygroscopic polymer in the core.
  • Patent Document 3 proposes a sea-island type composite fiber in which polyethylene glycol is copolymerized on an island and polyethylene terephthalate is placed on the sea.
  • a hygroscopic property is imparted to the polyester fiber by arranging a hygroscopic polymer on the island.
  • the object of the present invention is to solve the above-mentioned problems of the prior art and produce less dyeing spots and fluff when it is made into a fiber structure such as woven fabric or knitted fabric, and is excellent in quality and after hot water treatment such as dyeing. Furthermore, it is to provide a sea-island type composite fiber that is excellent in hygroscopicity and has a dry feeling inherent in polyester fiber when the sea component is polyester, and can be suitably used for clothing.
  • the problem of the present invention is that the island component is a polymer having hygroscopicity, and the ratio of the outermost layer thickness T to the fiber diameter R (T / R) is 0.05 to 0.25 in the fiber cross section,
  • T / R the ratio of the outermost layer thickness T to the fiber diameter R
  • ⁇ MR moisture absorption
  • the outermost layer thickness is the difference between the radius of the fiber and the radius of the circumscribed circle connecting the vertices of the island components arranged on the outermost periphery, and represents the thickness of the sea component existing in the outermost layer.
  • the outermost layer thickness T is 500 to 3000 nm and the diameter r of the island component in the fiber cross section is 10 to 5000 nm.
  • the island component is arranged on the circumference of 2 to 100, and the ratio of the diameter r1 of the island component arranged through the center of the fiber cross-section to the diameter r2 of other island components ( r1 / r2) is 1.1 to 10.0, the island component arranged on the outermost periphery has a non-circular shape on the center side of the fiber cross section, and the combined ratio of sea component / island component ( The weight ratio is preferably 50/50 to 90/10.
  • the hygroscopic polymer of the island component is preferably at least one polymer selected from the group consisting of polyether ester, polyether amide, and polyether ester amide containing polyether as a copolymer component.
  • the polyether is preferably at least one polyether selected from the group consisting of polyethylene glycol, polypropylene glycol, and polybutylene glycol, and the polyether has a number average molecular weight of 2000 to 30000 g / mol, A copolymerization rate of ether of 10 to 60% by weight can be suitably employed.
  • the polyether ester is mainly composed of an aromatic dicarboxylic acid and an aliphatic diol, and preferably a polyether as a copolymer component, or an alkylene oxide of a polyether and a bisphenol represented by the following general formula (1)
  • the adduct is preferably used as a copolymerization component, and the aliphatic diol is preferably 1,4-butanediol.
  • n and n are integers of 2 to 20, m + n is 4 to 30).
  • the sea component of the sea-island composite fiber is preferably a cationic dyeable polyester.
  • the false twisted yarn of the present invention is formed by twisting two or more sea-island type composite fibers, and is suitable for a fiber structure characterized by using the sea-island type composite fiber and / or the false twisted yarn at least partially. Can be adopted.
  • the present invention in hydrothermal treatment such as dyeing, cracking of the sea component accompanying the volume swelling of the hygroscopic polymer of the island component is suppressed, so that when a fiber structure such as a woven fabric or a knitted fabric is obtained. There is little generation of dyed spots and fluff, and it is excellent in quality. In addition, since elution of hygroscopic polymer is suppressed, it is excellent in hygroscopicity even after hot water treatment such as dyeing. Furthermore, when the sea component is polyester, it also has the original dry feeling of polyester fiber. Since a sea-island type composite fiber can be provided, it can be suitably used particularly for apparel applications.
  • FIG. 1 is a diagram showing an example of a cross-sectional shape of a sea-island composite fiber according to the present invention.
  • FIG. 2 is an example of a sea-island composite base used in the method for producing a sea-island composite fiber according to the present invention.
  • FIG. 2 (a) is a front sectional view of a main part constituting the sea-island composite base
  • FIG. 2C is a cross-sectional view of a part of the distribution plate
  • FIG. 2C is a cross-sectional view of the discharge plate.
  • FIG. 3 is a part of an example of a distribution plate.
  • FIG. 4 is an example of the distribution groove and distribution hole arrangement in the distribution plate.
  • the sea-island composite fiber of the present invention is a polymer in which the island component has hygroscopicity, and the ratio of the outermost layer thickness T to the fiber diameter R (T / R) is 0.05 to 0.25 in the fiber cross section.
  • the difference in moisture absorption ( ⁇ MR) after the hot water treatment is 2.0 to 10.0%.
  • the outermost layer thickness is the difference between the radius of the fiber and the radius of the circumscribed circle connecting the vertices of the island components arranged on the outermost periphery, and represents the thickness of the sea component existing in the outermost layer.
  • a hygroscopic polymer (hereinafter sometimes simply referred to as a hygroscopic polymer) has a property of being easily swelled by hot water treatment such as dyeing and being easily eluted into hot water. Yes. Therefore, when the hygroscopic polymer is made into a fiber alone, the hygroscopic polymer is eluted by hot water treatment, and the eluted portion causes dye spots and fluff, which causes a problem that the quality is lowered.
  • the hygroscopic polymer is a polymer obtained by copolymerizing a hydrophilic copolymer component
  • the hydrophilic copolymer component is eluted by the hot water treatment, and the hygroscopicity is lowered after the hot water treatment. is there.
  • the hygroscopic polymer disposed in the core is swollen by hot water treatment such as dyeing, resulting in stress concentration at the interface between the core component and the sheath component. Cracking of the sheath component occurs. Due to the crack of the sheath component, there is a problem that dyed spots and fluff are generated and the quality is lowered. Furthermore, starting from the portion where the sheath component is cracked, the hygroscopic polymer disposed in the core is eluted, causing another problem that the hygroscopicity is lowered after the hot water treatment.
  • a conventional sea-island type composite fiber can be obtained by, for example, a conventionally known pipe-type sea-island composite base disclosed in Japanese Patent Application Laid-Open No. 2007-10023, but the thickness of the sea component of the outermost layer is about 150 nm. It is a limit.
  • the thickness of the sea component of the outermost layer of the sea-island type composite fiber is very thin compared to the thickness of the sheath component of the core-sheath type composite fiber, the volume swelling of the hygroscopic polymer placed on the island by hot water treatment such as dyeing As a result, the sea component is easily cracked. Due to this cracking of the sea component, dyed spots and fluff are generated, the quality is lowered, and the hygroscopic polymer placed on the island elutes starting from the cracked sea component, and the hygroscopicity is achieved after hydrothermal treatment. descend.
  • the present inventors have dispersed the stress associated with volume swelling and determined the ratio (T / R) of the outermost layer thickness T to the fiber diameter R by dispersing and arranging the hygroscopic polymer.
  • T / R the ratio of the outermost layer thickness T to the fiber diameter R.
  • the island component of the sea-island composite fiber of the present invention is a hygroscopic polymer.
  • the hygroscopic polymer is a polymer having a moisture absorption difference ( ⁇ MR) of 2.0 to 30.0%.
  • the difference in moisture absorption ( ⁇ MR) in the present invention refers to a value measured by the method described in the examples.
  • ⁇ MR of the hygroscopic polymer is 2.0% or more, a sea-island type composite fiber excellent in hygroscopicity can be obtained by complexing with the sea component.
  • the ⁇ MR of the hygroscopic polymer is more preferably 5.0% or more, still more preferably 7.0% or more, and particularly preferably 10.0% or more.
  • ⁇ MR of the hygroscopic polymer is 30.0% or less, the process passability and handleability are good, and the durability after use as a sea-island type composite fiber is also excellent, which is preferable.
  • the island component of the sea-island composite fiber of the present invention include hygroscopic polymers such as polyether ester, polyether amide, polyether ester amide, polyamide, thermoplastic cellulose derivative, and polyvinylpyrrolidone, but are not limited thereto.
  • hygroscopic polymers such as polyether ester, polyether amide, polyether ester amide, polyamide, thermoplastic cellulose derivative, and polyvinylpyrrolidone, but are not limited thereto.
  • polyether esters, polyether amides, and polyether ester amides containing polyether as a copolymerization component are preferable because of their excellent hygroscopicity.
  • polyether esters are excellent in heat resistance, and mechanical properties of the resulting sea-island type composite fibers. It is preferable because the characteristics and color tone are good.
  • These hygroscopic polymers may use only 1 type and may use 2 or more types together. A blend of these hygroscopic poly
  • polyether of the hygroscopic polymer copolymer component examples include homopolymers such as polyethylene glycol, polypropylene glycol, polybutylene glycol, polyethylene glycol-polypropylene glycol copolymer, polyethylene glycol-polybutylene glycol copolymer, etc. However, it is not limited to these. Of these, polyethylene glycol, polypropylene glycol, and polybutylene glycol are preferable because they are easy to handle during production and use, and polyethylene glycol is particularly preferable because of its excellent hygroscopicity.
  • the number average molecular weight of the polyether is preferably 2000 to 30000 g / mol.
  • the polyether has a number average molecular weight of 2000 g / mol or more, the hygroscopic property of the hygroscopic polymer obtained by copolymerizing the polyether is high, and when used as an island component, the sea-island composite fiber has excellent hygroscopicity. Is preferable.
  • the number average molecular weight of the polyether is more preferably 3000 g / mol or more, and further preferably 5000 g / mol or more.
  • the number average molecular weight of the polyether is 30000 g / mol or less, the polycondensation reactivity is high, unreacted polyethylene glycol can be reduced, and the island component to the hot water during the hot water treatment such as dyeing can be reduced. It is preferable because elution of the hygroscopic polymer is suppressed and hygroscopicity can be maintained even after the hot water treatment.
  • the number average molecular weight of the polyether is more preferably 25000 g / mol or less, and further preferably 20000 g / mol or less.
  • the copolymerization rate of the polyether is preferably 10 to 60% by weight.
  • the copolymerization ratio of the polyether is 10% by weight or more
  • the hygroscopic polymer obtained by copolymerizing the polyether has a high hygroscopic property, and when used as an island component, a sea-island type composite fiber having excellent hygroscopicity Is preferable.
  • the copolymerization rate of the polyether is more preferably 20% by weight or more, and further preferably 30% by weight or more.
  • the copolymerization ratio of the polyether is 60% by weight or less, unreacted polyethylene glycol can be reduced, and the elution of the hygroscopic polymer of the island component into the hot water during hot water treatment such as dyeing is suppressed. It is preferable because the hygroscopicity can be maintained even after the hot water treatment.
  • the copolymerization ratio of the polyether is more preferably 55% by weight or less, and further preferably 50% by weight or less.
  • the polyether ester is composed mainly of an aromatic dicarboxylic acid and an aliphatic diol, and a polyether as a copolymer component, or an aromatic dicarboxylic acid and an aliphatic diol. It is preferable to use a polyether and an alkylene oxide adduct of bisphenols represented by the following general formula (1) as a main component and a copolymer component.
  • n and n are integers of 2 to 20, m + n is 4 to 30).
  • aromatic dicarboxylic acid examples include terephthalic acid, isophthalic acid, phthalic acid, 5-sodium sulfoisophthalic acid, 5-lithium sulfoisophthalic acid, 5- (tetraalkyl) phosphonium sulfoisophthalic acid, 4,4′-diphenyl
  • aromatic dicarboxylic acid examples include terephthalic acid, isophthalic acid, phthalic acid, 5-sodium sulfoisophthalic acid, 5-lithium sulfoisophthalic acid, 5- (tetraalkyl) phosphonium sulfoisophthalic acid, 4,4′-diphenyl
  • dicarboxylic acid and 2,6-naphthalenedicarboxylic acid examples include, but are not limited to, dicarboxylic acid and 2,6-naphthalenedicarboxylic acid.
  • aliphatic diol examples include ethylene glycol, 1,3-propanediol, 1,4-butanediol, hexanediol, cyclohexanediol, diethylene glycol, hexamethylene glycol, neopentyl glycol and the like.
  • ethylene glycol, propylene glycol, and 1,4-butanediol are preferable because they are easy to handle at the time of production and use, and ethylene glycol can be suitably used from the viewpoint of heat resistance and mechanical properties. From the viewpoint of crystallinity, 1,4-butanediol can be preferably employed.
  • the molding processability of the polyether ester is improved, and the resulting sea-island composite It is preferable because the mechanical properties of the fiber are high, the occurrence of fineness spots can be suppressed, dyed spots and fluff are few, and the quality is good.
  • m + n is preferably 4 to 30.
  • m + n is 4 or more, the molding processability of the polyether ester is good, the occurrence of fineness spots in the obtained sea-island type composite fiber can be suppressed, dyed spots and fluff are few, and the quality is favorable.
  • m + n of 30 or less is preferable because the polyether ester has good heat resistance and color tone, and the resulting sea-island composite fiber has good mechanical properties and color tone.
  • m + n is more preferably 20 or less, and still more preferably 10 or less.
  • alkylene oxide adduct of bisphenols represented by the above general formula (1) examples include, but are not limited to, an ethylene oxide adduct of bisphenol A, an ethylene oxide adduct of bisphenol S, and the like.
  • an ethylene oxide adduct of bisphenol A is preferable because it has good handleability during production and use, and can be suitably employed from the viewpoint of heat resistance and mechanical properties.
  • the copolymerization ratio of the polyether is 10 to 45% by weight, and the alkylene oxide adduct of the bisphenol
  • the copolymerization ratio of is preferably 10 to 30% by weight.
  • the copolymerization ratio of the polyether is 10% by weight or more, the hygroscopic polymer obtained by copolymerizing the polyether has a high hygroscopic property, and when used as an island component, a sea-island type composite fiber having excellent hygroscopicity Is preferable.
  • the copolymerization rate of the polyether is more preferably 20% by weight or more, and further preferably 30% by weight or more.
  • the copolymerization ratio of the polyether is 45% by weight or less, unreacted polyethylene glycol can be reduced, and the elution of the hygroscopic polymer of the island component into the hot water is suppressed during the hot water treatment such as dyeing. It is preferable because the hygroscopicity can be maintained even after the hot water treatment.
  • the copolymerization rate of the polyether is more preferably 40% by weight or less, and further preferably 35% by weight or less.
  • the copolymerization rate of the alkylene oxide adduct of bisphenols is 10% by weight or more, the molding processability of the polyether ester is good, and the occurrence of fineness spots in the obtained sea-island type composite fiber can be suppressed, and dyeing spots It is preferable because it has less fuzz and good quality.
  • the copolymerization rate of the alkylene oxide adduct of bisphenols is more preferably 12% by weight or more, and further preferably 14% by weight or more.
  • the copolymerization rate of the alkylene oxide adduct of bisphenols is 30% by weight or less, the heat resistance and color tone of the polyether ester are good, and the mechanical properties and color tone of the resulting sea-island composite fiber are good. This is preferable.
  • the copolymerization ratio of the alkylene oxide adduct of bisphenols is more preferably 25% by weight or less, and further preferably 20% by weight or less.
  • the island component of the sea-island composite fiber of the present invention is preferably a polymer having crystallinity. If the island component has crystallinity, a melting peak accompanying melting of the crystal is observed in the measurement of the extrapolation melting start temperature by the method described in the examples. If the island component has crystallinity, elution of the hygroscopic polymer of the island component into the hot water during hot water treatment such as dyeing is suppressed, which is preferable because hygroscopicity can be maintained even after the hot water treatment. .
  • the sea component of the sea-island composite fiber of the present invention preferably has crystallinity. If the sea component has crystallinity, a melting peak accompanying the melting of the crystal is observed in the measurement of the extrapolation melting start temperature by the method described in the Examples. If the sea component has crystallinity, the fusion between fibers accompanying the contact with the heating roller or heater in the stretching or false twisting process is suppressed, so the deposit on the heating roller, heater, or guide It is preferable because it is less likely to cause breakage of yarn, yarn breakage and fluff, has good process passability, has little dyeing spots and fluff when formed into a fiber structure such as woven fabric or knitted fabric, and is excellent in quality. Moreover, since the elution of the sea component to a hot water is suppressed at the time of hot water processes, such as dyeing
  • the sea component of the sea-island composite fiber of the present invention include polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon 6 and nylon 66, polyolefins such as polyethylene and polypropylene, but are not limited thereto. .
  • polyester is preferred because of its excellent mechanical properties and durability.
  • the sea component is a hydrophobic polymer such as polyester or polyolefin
  • the fiber structure is excellent in wearing comfort because both the hygroscopicity by the hygroscopic polymer of the island component and the dry feeling by the hydrophobic polymer of the sea component are compatible. It is preferable because a body can be obtained.
  • polyester relating to the sea component of the sea-island composite fiber of the present invention include aromatic polyesters such as polyethylene terephthalate, polypropylene terephthalate, and polybutylene terephthalate, and aliphatic polyesters such as polylactic acid and polyglycolic acid. It is not limited to these.
  • polyethylene terephthalate, polypropylene terephthalate, and polybutylene terephthalate are preferable because they are excellent in mechanical properties and durability, and are easy to handle during production and use.
  • Polyethylene terephthalate is preferable because it provides a firmness and a firm feeling peculiar to polyester fibers, and polybutylene terephthalate is preferable because of its high crystallinity.
  • the sea component of the sea-island composite fiber of the present invention is preferably a cationic dyeable polyester. If the polyester has an anion moiety such as a sulfonic acid group, it has cation dyeability due to interaction with a cationic dye having a cation moiety. If the sea component is a cationic dyeable polyester, it is preferable because it shows clear color developability and can prevent dye contamination when mixed with polyurethane fibers.
  • Specific examples of the copolymerizable component of the cationic dyeable polyester include 5-sulfoisophthalic acid metal salt, and examples thereof include, but are not limited to, lithium salt, sodium salt, potassium salt, rubidium salt, and cesium salt. Of these, lithium salts and sodium salts are preferable, and sodium salts are particularly suitable because they are excellent in crystallinity.
  • the sea-island type composite fiber of the present invention may be one in which various modifications are made by adding a secondary additive to the sea component and / or the island component.
  • secondary additives include compatibilizers, plasticizers, antioxidants, ultraviolet absorbers, infrared absorbers, fluorescent whitening agents, mold release agents, antibacterial agents, nucleating agents, thermal stabilizers, charging Examples include, but are not limited to, inhibitors, anti-coloring agents, regulators, matting agents, antifoaming agents, preservatives, gelling agents, latexes, fillers, inks, coloring agents, dyes, pigments, and fragrances. These secondary additives may be used alone or in combination.
  • the extrapolated melting start temperature of the sea-island composite fiber of the present invention is preferably 150 to 300 ° C.
  • the extrapolated melting start temperature of the sea-island type composite fiber in the present invention refers to a value calculated by the method described in the examples. When a plurality of melting peaks were observed, the extrapolated melting start temperature was calculated from the melting peak on the lowest temperature side. If the extrapolated melting start temperature of the sea-island type composite fiber is 150 ° C.
  • the extrapolated melting start temperature of the sea-island type composite fiber is more preferably 170 ° C. or higher, further preferably 190 ° C. or higher, and particularly preferably 200 ° C. or higher.
  • the extrapolated melting start temperature of the sea-island type composite fiber is 300 ° C. or lower, it is preferable in the melt spinning process because yellowing due to thermal deterioration is suppressed and a sea-island type composite fiber having a good color tone is obtained.
  • the sea-island composite fiber of the present invention has a ratio (T / R) of the outermost layer thickness T to the fiber diameter R in the fiber cross section of 0.05 to 0.25.
  • the outermost layer thickness in the present invention is the difference between the radius of the fiber and the radius of the circumscribed circle connecting the vertices of the island components arranged on the outermost periphery, and represents the thickness of the sea component existing in the outermost layer.
  • the ratio (T / R) between the outermost layer thickness T and the fiber diameter R in the present invention refers to a value calculated by the method described in the examples.
  • the thickness of the outermost layer relative to the fiber diameter is sufficiently secured, so that the volume of hygroscopic polymer placed on the island can be increased by hydrothermal treatment such as dyeing. It is possible to suppress the cracking of the sea component that accompanies it, the occurrence of dyed spots and fluff due to the cracking of the sea component is small, the quality is excellent, the elution of the hygroscopic polymer is suppressed, and the moisture absorption is high even after hydrothermal treatment Expresses sex. In addition, sufficient color developability can be obtained by dyeing sea components, and high-quality fibers and fiber structures can also be obtained in terms of color developability.
  • the T / R of the sea-island type composite fiber is more preferably 0.07 or more, further preferably 0.09 or more, and particularly preferably 0.10 or more.
  • the T / R of the sea-island type composite fiber is 0.25 or less, the volume swelling of the hygroscopic polymer arranged on the island is not impaired by the thickness of the outermost layer with respect to the fiber diameter, and the hygroscopic property by the hygroscopic polymer is exhibited.
  • highly hygroscopic fibers and fiber structures can be obtained.
  • the T / R of the sea-island type composite fiber is more preferably 0.22 or less, and further preferably 0.20 or less.
  • the outermost layer thickness T of the sea-island composite fiber of the present invention is preferably 500 to 3000 nm.
  • the outermost layer thickness T in the present invention refers to a value calculated by the method described in the examples. If the outermost layer thickness T of the sea-island type composite fiber is 500 nm or more, the thickness of the outermost layer is sufficiently secured, so that the sea component accompanying the volume swelling of the hygroscopic polymer disposed on the island is obtained by hot water treatment such as dyeing.
  • the outermost layer thickness T of the sea-island type composite fiber is more preferably 700 nm or more, still more preferably 800 nm or more, and particularly preferably 1000 nm or more.
  • the outermost layer thickness T of the sea-island type composite fiber is 3000 nm or less, the volume swelling of the hygroscopic polymer disposed on the island is not impaired by the thickness of the outermost layer with respect to the fiber diameter, and the hygroscopic property by the hygroscopic polymer is expressed. It is preferable because highly hygroscopic fibers and fiber structures can be obtained.
  • the outermost layer thickness T of the sea-island type composite fiber is more preferably 2500 nm or less, and further preferably 2000 nm or less.
  • the number of islands of the sea-island type composite fiber of the present invention is preferably 3 to 10,000. If the number of islands in the sea-island type composite fiber is 3 or more, the effect of dispersing the stress generated by the volume swelling of the hygroscopic polymer in the hydrothermal treatment such as dyeing is manifested by the dispersive arrangement of the hygroscopic polymer as the island component Therefore, it is preferable because cracking of the sheath component due to stress concentration, which is a problem of the conventional core-sheath type composite fiber, can be suppressed.
  • the number of islands of the sea-island type composite fiber is more preferably 6 or more, further preferably 12 or more, and particularly preferably 20 or more.
  • the number of islands of the sea-island type composite fiber is 10,000 or less, the arrangement of the island components can be precisely controlled in the fiber cross section, and high-quality fibers and fiber structures can be obtained from the viewpoint of texture and color development. It is preferable because it can be obtained.
  • the number of islands of the sea-island type composite fiber is more preferably 5000 or less, and still more preferably 1000 or less.
  • the diameter r of the island component in the fiber cross section is preferably 10 to 5000 nm.
  • the diameter r of the island component in the present invention refers to a value calculated by the method described in the examples. If the diameter r of the island component in the fiber cross section is 10 nm or more, it is preferable because the hygroscopic property of the island component dispersed and arranged in the fiber cross section is expressed.
  • the diameter r of the island component in the fiber cross section of the sea-island composite fiber is more preferably 100 nm or more, and further preferably 500 nm or more.
  • the diameter r of the island component in the fiber cross section is 5000 nm or less, the stress generated by the volume swelling of the hygroscopic polymer disposed on the island can be reduced by hot water treatment such as dyeing, and the sea component Since cracking can be suppressed, it is preferable.
  • the diameter r of the island component in the fiber cross section of the sea-island composite fiber is more preferably 3000 nm or less, and still more preferably 2000 nm or less.
  • the island component is arranged on the circumference of 2 to 100 in the fiber cross section.
  • positioned concentrically in a fiber cross section is defined as 1 round, and the number of concentric circles from which a diameter differs is a circumference.
  • one island component is arrange
  • 1 (a) to (m) are examples of the cross-sectional shape of the sea-island type composite fiber of the present invention, and each of the island components is one round in FIGS. 1 (b) and 1 (c), and FIG.
  • the core-sheath composite fiber has an interface between the core component and the sheath component.
  • the sea-island type composite fiber in which the island component is arranged in one turn has the maximum stress at the interface between the fiber surface side of the island component and the sea component. The result was obtained.
  • a crack occurs at the interface between the core component and the sheath component where the stress becomes maximum with the volume swelling of the hygroscopic polymer of the core component, and this crack propagates to the fiber surface layer. It was found that component cracking occurred.
  • the sea-island type composite fiber in which the island component is arranged in one circumference with the volume swelling of the hygroscopic polymer of the island component, a crack is generated at the interface between the fiber surface layer of the island component where the stress is maximum and the sea component, As this crack propagates to the fiber surface layer, the sea component is cracked.
  • the island component fiber in which the island component is arranged in two or more rounds in the fiber cross section, the island component fiber arranged in the fiber inner layer side of the island component arranged in the outermost circumference and one circumference inward from the outermost circumference.
  • the stress is maximized between the surface layer side, the propagation of cracks to the fiber surface layer is blocked, and the cracking of the sea component is suppressed, which is preferable.
  • the island components are arranged in three or more rounds, and it is more preferable that the island components are arranged in four or more rounds.
  • the island component is arranged at 100 or less, it is possible to provide a gap between the adjacent island component and the island component, so that the moisture absorption polymer of the island component can swell in volume with moisture absorption. This is preferable because a sea-island type composite fiber having excellent hygroscopicity can be obtained.
  • the ratio (r1 / r2) of the diameter r1 of the island component arranged to pass through the center of the fiber cross section and the diameter r2 of the other island component is 1.1 to 10.0. Preferably there is.
  • the ratio (r1 / r2) of the diameter r1 of the island component arranged to pass through the center of the fiber cross section and the diameter r2 of the other island component indicates a value calculated by the method described in the examples. .
  • r1 / r2 is larger than 1.0.
  • the sea-island type composite fiber Examples of the cross-sectional shape of FIGS. 1 (k) to 1 (m) are given. If the r1 / r2 of the sea-island type composite fiber is 1.1 or more, the diameter r2 of the other island component is smaller than the diameter r1 of the island component arranged to pass through the center of the fiber cross section. The stress generated by the volume swelling of the hygroscopic polymer of the island component close to the surface layer can be reduced, and cracking of the sea component can be suppressed, which is preferable.
  • the r1 / r2 of the sea-island type composite fiber is more preferably 1.2 or more, and further preferably 1.5 or more.
  • r1 / r2 of the sea-island type composite fiber is 10.0 or less, the stress generated by the volume swelling of the hygroscopic polymer of the island component arranged so as to pass through the center of the fiber cross section is caused by the other island components. This is preferable because it can be absorbed, the propagation of cracks to the fiber surface layer is blocked, and the cracking of sea components can be suppressed.
  • the r1 / r2 of the sea-island type composite fiber is more preferably 7.0 or less, and further preferably 5.0 or less.
  • the sea-island type composite fiber of the present invention is not particularly limited with respect to the shape of the island component in the fiber cross section, and may be a perfect circular cross section or a non-circular cross section.
  • Specific examples of the non-circular cross section include, but are not limited to, a multilobal shape, a polygonal shape, a flat shape, and an oval shape.
  • the island component has a perfect circular cross section
  • the hygroscopic polymer placed on the island swells in volume, stress is evenly generated on the circumference and stress concentration does not occur. Since it can suppress, it is preferable.
  • the shape of the center side of a fiber cross section is non-circular.
  • the sea / island component composite ratio (weight ratio) of the sea-island composite fiber of the present invention is preferably 50/50 to 90/10.
  • the sea component / island component composite ratio (weight ratio) of the sea-island composite fiber in the present invention refers to a value calculated by the method described in the examples. If the composite ratio of the sea component of the sea-island type composite fiber is 50% by weight or more, it is preferable because the sea component provides a firmness, firmness and dry feel.
  • the composite ratio of the sea components of the sea-island type composite fiber is more preferably 55% by weight or more, and further preferably 60% by weight or more.
  • the composite ratio of the sea component of the sea-island type composite fiber is 90% by weight or less, that is, if the composite ratio of the island component is 10% by weight or more, the hygroscopic property by the hygroscopic polymer of the island component is exhibited, and the hygroscopic property is excellent.
  • the composite ratio of the sea components of the sea-island composite fibers is more preferably 85% by weight or less, and still more preferably 80% by weight or less.
  • the fineness of the sea-island composite fiber of the present invention as a multifilament is not particularly limited and can be appropriately selected according to the application and required characteristics, but is preferably 10 to 500 dtex.
  • the fineness in the present invention refers to a value measured by the method described in the examples.
  • the fineness of the sea-island type composite fiber is more preferably 30 dtex or more, and further preferably 50 dtex or more.
  • the fineness of the sea-island type composite fiber is 500 dtex or less, the flexibility of the fiber and the fiber structure is not impaired, which is preferable.
  • the fineness of the sea-island type composite fiber is more preferably 400 dtex or less, and further preferably 300 dtex or less.
  • the single yarn fineness of the sea-island composite fiber of the present invention is not particularly limited and can be appropriately selected according to the application and required characteristics, but is preferably 0.5 to 4.0 dtex.
  • the single yarn fineness in the present invention refers to a value obtained by dividing the fineness measured by the method described in the examples by the number of single yarns. It is preferable that the sea island type composite fiber has a single yarn fineness of 0.5 dtex or more, since there are few yarn breaks and good process passability, and there is little fluffing during use and excellent durability.
  • the single yarn fineness of the sea-island composite fiber is more preferably 0.6 dtex or more, and still more preferably 0.8 dtex or more.
  • the single yarn fineness of the sea-island type composite fiber is 4.0 dtex or less, it is preferable because the flexibility of the fiber and the fiber structure is not impaired.
  • the single yarn fineness of the sea-island type composite fiber is more preferably 2.0 dtex or less, and further preferably 1.5 dtex or less.
  • the strength of the sea-island type composite fiber of the present invention is not particularly limited and can be appropriately selected according to the use and required characteristics. From the viewpoint of mechanical characteristics, it is 2.0 to 5.0 cN / dtex. preferable.
  • the strength in the present invention refers to a value measured by the method described in the examples. If the strength of the sea-island type composite fiber is 2.0 cN / dtex or more, it is preferable because the generation of fluff is small during use and the durability is excellent.
  • the strength of the sea-island type composite fiber is more preferably 2.5 cN / dtex or more, and further preferably 3.0 cN / dtex or more. On the other hand, if the strength of the sea-island type composite fiber is 5.0 cN / dtex or less, the flexibility of the fiber and the fiber structure is not impaired, which is preferable.
  • the elongation of the sea-island type composite fiber of the present invention is not particularly limited and can be appropriately selected according to the use and required characteristics, but is preferably 10 to 60% from the viewpoint of durability.
  • the elongation in the present invention refers to a value measured by the method described in the examples. If the elongation of the sea-island type composite fiber is 10% or more, the abrasion resistance of the fiber and the fiber structure is good, the occurrence of fluff is small during use, and the durability is good.
  • the elongation of the sea-island type composite fiber is more preferably 15% or more, and further preferably 20% or more.
  • the elongation of the sea-island type composite fiber is 60% or less because the dimensional stability of the fiber and the fiber structure becomes good.
  • the elongation of the sea-island type composite fiber is more preferably 55% or less, and further preferably 50% or less.
  • the difference in moisture absorption ( ⁇ MR) after hydrothermal treatment of the sea-island composite fiber of the present invention is 2.0 to 10.0%.
  • the moisture absorption difference ( ⁇ MR) after the hot water treatment refers to a value measured by the method described in the examples.
  • ⁇ MR is the difference between the moisture absorption rate at a temperature of 30 ° C. and a humidity of 90% RH assuming the temperature and humidity in the clothes after light exercise, and the moisture absorption rate at a temperature of 20 ° C. and a humidity of 65% RH as the outside air temperature humidity. That is, ⁇ MR is a hygroscopic index, and the higher the value of ⁇ MR, the better the wearing comfort.
  • the difference in moisture absorption rate ( ⁇ MR) of the present invention is a value after hydrothermal treatment, and is very important in that it expresses hygroscopicity even after hydrothermal treatment such as dyeing. If ⁇ MR after the hydrothermal treatment of the sea-island type composite fiber is 2.0% or more, there is little feeling of stuffiness in the clothes and wear comfort is expressed. ⁇ MR after hydrothermal treatment of the sea-island type composite fiber is more preferably 2.5% or more, further preferably 3.0% or more, and particularly preferably 4.0% or more. On the other hand, if the ⁇ MR after hydrothermal treatment of the sea-island type composite fiber is 10.0% or less, the process passability and handleability are good, and the durability during use is also excellent.
  • the sea-island composite fiber of the present invention is not particularly limited with respect to the cross-sectional shape of the fiber, and can be appropriately selected according to the application and required characteristics, and may be a perfect circular circular cross section or a non-circular cross section. May be.
  • Specific examples of the non-circular cross section include, but are not limited to, a multilobal shape, a polygonal shape, a flat shape, and an oval shape.
  • the sea-island type composite fiber of the present invention is not particularly limited with respect to the form of the fiber, and may be any form such as monofilament, multifilament, and staple.
  • the sea-island type composite fiber of the present invention can be processed into false twists and twisted yarns in the same manner as general fibers, and weaving and knitting can be handled in the same manner as general fibers.
  • the form of the fiber structure composed of the sea-island composite fiber and / or false twisted yarn of the present invention is not particularly limited, and can be made into a woven fabric, a knitted fabric, a pile fabric, a nonwoven fabric, a spun yarn, a stuffed cotton, or the like according to a known method. it can. Further, the fiber structure composed of the sea-island type composite fiber and / or false twisted yarn of the present invention may be any woven or knitted structure, such as plain weave, twill weave, satin weave, or their changed weave, warp knitting, weft Knitting, circular knitting, lace knitting, or a change knitting thereof can be suitably employed.
  • the sea-island type composite fiber of the present invention may be combined with other fibers by knitting or knitting when forming a fiber structure, or may be made into a fiber structure after blended yarn with other fibers.
  • a known melt spinning method, stretching method, crimping method such as false twisting can be used as a method for producing the sea-island composite fiber of the present invention.
  • the sea component and the island component before melt spinning, it is preferable to dry the sea component and the island component so that the water content is 300 ppm or less.
  • a water content of 300 ppm or less is preferable because molecular weight reduction due to hydrolysis and foaming due to moisture are suppressed during melt spinning, and spinning can be performed stably.
  • the water content is more preferably 100 ppm or less, and further preferably 50 ppm or less.
  • chips dried in advance are supplied to an extruder type or pressure melter type melt spinning machine, and sea components and island components are separately melted and measured with a metering pump. Then, after introducing into the spinning pack heated in the spinning block and filtering the molten polymer in the spinning pack, the sea component and island component are merged with the sea-island composite die described later, and the sea-island structure is discharged from the spinneret. Use fiber yarn.
  • the sea-island composite base for example, a conventionally known pipe-type sea-island composite base in which a pipe group disclosed in Japanese Patent Laid-Open No. 2007-100233 is arranged may be used.
  • the thickness of the sea component of the outermost layer is about 150 nm
  • the limit of the technology is the ratio of the outermost layer thickness T and the fiber diameter R in the fiber cross section, which is an essential requirement of the present invention ( It is difficult to satisfy (T / R). Therefore, in the present invention, a method using a sea-island composite base described in Japanese Patent Application Laid-Open No. 2011-174215 is preferably used.
  • FIGS. 2 to 4 are explanatory views for schematically explaining an example of the sea-island composite base used in the present invention.
  • FIG. 2 (a) is a schematic diagram of main parts constituting the sea-island composite base.
  • 2B is a cross-sectional view of a part of the distribution plate
  • FIG. 2C is a cross-sectional view of a part of the discharge plate.
  • 2 (b) and 2 (c) are a distribution plate and a discharge plate constituting FIG. 2 (a)
  • FIG. 3 is a plan view of the distribution plate
  • FIG. 4 is a part of the distribution plate in the present invention. It is an enlarged view, and each is described as a groove and a hole related to one discharge hole.
  • the polymer A (island component) and polymer B (sea component) from the upstream of the spinning pack are the polymer A measuring hole (10- (a)) and polymer B measuring hole (10- (b)) of the measuring plate in FIG. And is metered by a hole restrictor drilled at the lower end, and then flows into the distribution plate.
  • a distribution groove 11 (FIG. 3: 11- (a), 11- (b)) for joining the polymer flowing in from the metering hole 10 and a lower surface of the distribution groove for flowing the polymer downstream.
  • Distribution holes 12 (FIG.
  • the composite polymer flow composed of the polymer A and the polymer B discharged from the distribution plate flows into the discharge plate 9 from the discharge introduction hole 13.
  • the composite polymer flow is reduced in the cross-sectional direction along the polymer flow by the reduction holes 14 while being introduced into the discharge holes having a desired diameter, and the cross-sectional shape formed by the distribution plate is maintained. It is discharged from the discharge hole 15.
  • the fiber yarn discharged from the sea-island composite base is cooled and solidified by a cooling device, taken up by a first godet roller, wound up by a winder through a second godet roller, and taken up as a wound yarn.
  • a heating cylinder or a thermal insulation cylinder having a length of 2 to 20 cm may be provided below the spinneret as necessary.
  • the spinning temperature in melt spinning can be appropriately selected according to the melting point and heat resistance of the sea component and the island component, but is preferably 240 to 320 ° C. If the spinning temperature is 240 ° C. or higher, the elongation viscosity of the fiber yarn discharged from the spinneret is sufficiently lowered, so that the discharge is stable, and further, the spinning tension is not excessively high and the yarn breakage is suppressed. This is preferable.
  • the spinning temperature is more preferably 250 ° C. or higher, and further preferably 260 ° C. or higher. On the other hand, a spinning temperature of 320 ° C.
  • the spinning temperature is more preferably 310 ° C. or lower, and further preferably 300 ° C. or lower.
  • the spinning speed in melt spinning can be appropriately selected according to the composition of the sea component, the island component, the spinning temperature, and the like.
  • the spinning speed is preferably 500 to 6000 m / min in the case of the two-step method in which the melt spinning is once performed and wound and then separately drawn or false twisted.
  • a spinning speed of 500 m / min or more is preferable because the running yarn is stable and yarn breakage can be suppressed.
  • the spinning speed in the two-step method is more preferably 1000 m / min or more, and further preferably 1500 m / min or more.
  • a spinning speed of 6000 m / min or less is preferable because stable spinning can be performed without yarn breakage by suppressing spinning tension.
  • the spinning speed in the two-step method is more preferably 4500 m / min or less, and further preferably 4000 m / min or less.
  • the spinning speed in the one-step method in which spinning and stretching are performed simultaneously without winding is preferably 500 to 5000 m / min for the low speed roller and 2500 to 6000 m / min for the high speed roller. It is preferable that the low-speed roller and the high-speed roller are within the above ranges because the running yarn is stabilized, yarn breakage can be suppressed, and stable spinning can be performed.
  • the spinning speed in the one-step method is more preferably 1000 to 4500 m / min for the low speed roller, 3500 to 5500 m / min for the high speed roller, 1500 to 4000 m / min for the low speed roller, and 4000 to 5000 m / min for the high speed roller. More preferably.
  • the heating method in stretching is not particularly limited as long as it is a device that can directly or indirectly heat the traveling yarn.
  • Specific examples of the heating method include, but are not limited to, a heating roller, a hot pin, a hot plate, a liquid bath such as hot water and hot water, a gas bath such as hot air and steam, and a laser. These heating methods may be used alone or in combination. Heating methods include control of the heating temperature, uniform heating of the running yarn, and contact with the heating roller, contact with the hot pin, contact with the hot plate, and immersion in a liquid bath from the viewpoint of not complicating the device. It can be suitably employed.
  • the stretching temperature in the case of stretching can be appropriately selected according to the extrapolated melting start temperature of the sea component and island component polymers, the strength of the fiber after stretching, the elongation, etc. Preferably there is. If the stretching temperature is 50 ° C. or higher, the yarn supplied to the stretching is sufficiently preheated, the thermal deformation at the time of stretching becomes uniform, the occurrence of fineness spots can be suppressed, the dyed spots and fluff are few, and the quality Is preferable because The stretching temperature is more preferably 60 ° C. or higher, and further preferably 70 ° C. or higher. On the other hand, if the stretching temperature is 150 ° C.
  • the stretching temperature is more preferably 145 ° C. or less, and further preferably 140 ° C. or less. Further, heat setting at 60 to 150 ° C. may be performed as necessary.
  • the draw ratio in the case of stretching can be appropriately selected according to the elongation of the fiber before stretching, the strength and elongation of the fiber after stretching, etc., but is 1.02 to 7.0 times Is preferred.
  • a draw ratio of 1.02 or more is preferable because mechanical properties such as fiber strength and elongation can be improved by drawing.
  • the draw ratio is more preferably 1.2 times or more, and further preferably 1.5 times or more.
  • the draw ratio is if the draw ratio is 7.0 times or less, yarn breakage during drawing is suppressed, and stable drawing can be performed.
  • the draw ratio is more preferably 6.0 times or less, and still more preferably 5.0 times or less.
  • the stretching speed in the case of stretching can be appropriately selected depending on whether the stretching method is a one-step method or a two-step method.
  • the speed of the high-speed roller corresponding to the spinning speed corresponds to the stretching speed.
  • the stretching speed is preferably 30 to 1000 m / min. A stretching speed of 30 m / min or more is preferable because the running yarn is stable and yarn breakage can be suppressed.
  • the stretching speed is more preferably 50 m / min or more, and further preferably 100 m / min or more.
  • a stretching speed of 1000 m / min or less is preferable because yarn breakage during stretching can be suppressed and stable stretching can be performed.
  • the stretching speed when stretching by the two-step method is more preferably 900 m / min or less, and still more preferably 800 m / min or less.
  • so-called bulerial processing using both a single-stage heater and a two-stage heater can be selected as appropriate in addition to the so-called Woolley process that uses only a single-stage heater.
  • the heating method of the heater may be either a contact type or a non-contact type.
  • Specific examples of the false twisting machine include, but are not limited to, a friction disk type, a belt nip type, and a pin type.
  • the heater temperature when performing false twisting can be appropriately selected according to the extrapolated melting start temperature of the sea component and island component polymers, but is preferably 120 to 210 ° C.
  • the heater temperature is 120 ° C. or higher, the yarn supplied to the false twisting process is sufficiently preheated, the thermal deformation accompanying stretching becomes uniform, the occurrence of fineness spots can be suppressed, and there are few dyed spots and fluff. It is preferable because the quality is improved.
  • the heater temperature is more preferably 140 ° C. or higher, and further preferably 160 ° C. or higher. On the other hand, if the heater temperature is 210 ° C.
  • the heater temperature is more preferably 200 ° C. or less, and further preferably 190 ° C. or less.
  • the draw ratio in the case of false twisting can be appropriately selected according to the elongation of the fiber before false twisting, the strength and elongation of the fiber after false twisting, etc., but 1.01 to 2 .5 times is preferable.
  • a draw ratio of 1.01 or more is preferable because mechanical properties such as fiber strength and elongation can be improved by drawing.
  • the draw ratio is more preferably 1.2 times or more, and further preferably 1.5 times or more.
  • a draw ratio of 2.5 times or less is preferable because yarn breakage during false twisting can be suppressed and stable false twisting can be performed.
  • the draw ratio is more preferably 2.2 times or less, and further preferably 2.0 times or less.
  • the processing speed when performing false twisting can be appropriately selected, but is preferably 200 to 1000 m / min.
  • a processing speed of 200 m / min or more is preferable because the running yarn is stable and yarn breakage can be suppressed.
  • the processing speed is more preferably 300 m / min or more, and still more preferably 400 m / min or more.
  • the processing speed is 1000 m / min or less, yarn breakage during false twisting is suppressed and stable false twisting can be performed, which is preferable.
  • the processing speed is more preferably 900 m / min or less, and still more preferably 800 m / min or less.
  • a disperse dye can be suitably employed as the dye.
  • the dyeing method in the present invention is not particularly limited, and a cheese dyeing machine, a liquid dyeing machine, a drum dyeing machine, a beam dyeing machine, a jigger, a high-pressure jigger and the like can be suitably employed according to a known method.
  • the dye concentration and dyeing temperature there is no particular limitation on the dye concentration and dyeing temperature, and a known method can be suitably employed. If necessary, scouring may be performed before the dyeing process, or reduction cleaning may be performed after the dyeing process.
  • the sea-island type composite fiber of the present invention and the false twisted yarn and fiber structure comprising the same are excellent in hygroscopicity. Therefore, it can be suitably used in applications that require comfort and quality. Examples include, but are not limited to, general clothing uses, sports clothing uses, bedding uses, interior uses, and material uses.
  • the moisture absorption rate MR1 (%) when left standing in an atmosphere of 20 ° C. and 65% humidity for 24 hours from the absolutely dry state is calculated according to the following formula.
  • Extrapolated melting start temperature Using the TA instrument differential scanning calorimeter (DSC) Q2000, the extrapolated melting start temperature was measured using samples of the sea component and island component polymers and the fibers obtained in the examples. . First, about 5 mg of a sample was heated from 0 ° C. to 280 ° C. at a temperature rising rate of 50 ° C./min under a nitrogen atmosphere, and held at 280 ° C. for 5 minutes to remove the thermal history of the sample. Then, after rapidly cooling from 280 ° C. to 0 ° C., the temperature was increased again from 0 ° C. to 280 ° C.
  • DSC differential scanning calorimeter
  • the extrapolated melting start temperature was calculated from the melting peak observed during the second temperature raising process. The measurement was performed 3 times per sample, and the average value was used as the extrapolated melting start temperature. When a plurality of melting peaks were observed, the extrapolated melting start temperature was calculated from the melting peak on the lowest temperature side.
  • sea / island composite ratio The sea / island composite ratio (weight ratio) was calculated from the weight of the sea component used as the raw material for the sea-island composite fiber and the weight of the island component.
  • Fineness (dtex) weight of fiber 100 m (g) ⁇ 100.
  • E. Strength and elongation The strength and elongation were calculated according to JIS L1013: 2010 (chemical fiber filament yarn test method) 8.5.1 using the fiber obtained in the example as a sample. In an environment of a temperature of 20 ° C. and a humidity of 65% RH, a tensile test was performed using an orientec Tensilon UTM-III-100 model under the conditions of an initial sample length of 20 cm and a tensile speed of 20 cm / min.
  • the strength (cN / dtex) is calculated by dividing the stress (cN) at the point indicating the maximum load by the fineness (dtex), and using the elongation (L1) and the initial sample length (L0) at the point indicating the maximum load, The elongation (%) was calculated by the formula. The measurement was carried out 10 times per sample, and the average values were taken as the strength and elongation.
  • Elongation (%) ⁇ (L1-L0) / L0 ⁇ ⁇ 100.
  • Fiber diameter R The fibers obtained according to the examples were embedded with epoxy resin, frozen with a Reichert FC 4E cryosectioning system, and cut with a Reichert-Nissei ultracut N (ultramicrotome) equipped with a diamond knife. Thereafter, the cut surface, that is, the fiber cross section, was observed at 1000 times using a transmission electron microscope (TEM) H-7100FA manufactured by Hitachi, Ltd., and a micrograph of the fiber cross section was taken. Ten single yarns were randomly extracted from the obtained photographs, and the fiber diameters of all the extracted single yarns were measured using image processing software (WINROOF manufactured by Mitani Corporation). nm). Since the fiber cross section is not necessarily a perfect circle, the diameter of the circumscribed circle of the fiber cross section was adopted as the fiber diameter when it was not a perfect circle.
  • T / R T / R was calculated by dividing the outermost layer thickness T (nm) calculated in G above by the fiber diameter R (nm) calculated in F above.
  • I. Island component diameters r, r1, r2 The fiber cross section was observed in the same manner as the fiber diameter described in F above, and a photomicrograph was taken at the highest magnification at which the entire single yarn image could be observed. In the obtained photograph, the diameter of all island components in the fiber cross section was measured using image processing software (WINROOF manufactured by Mitani Corporation). Since the island component is not necessarily a perfect circle, the diameter of the circumscribed circle of the island component is adopted as the island component diameter when it is not a perfect circle.
  • the average value of the diameters of all island components was calculated as r, the diameter of the island components passing through the center was r1, and the average value of the diameters of all island components excluding the island components passing through the center was calculated as r2.
  • Ten single yarns were randomly extracted from the obtained photographs, and r, r1, and r2 were similarly determined for each single yarn, and the average values thereof were r (nm), r1 (nm), and r2 (nm). did.
  • the tube is dried in a hot air dryer at 60 ° C. for 60 minutes, and the tube after the hot water treatment. Knitted.
  • the moisture absorption rate (%) was calculated according to the moisture content of JIS L1096: 2010 (fabric and knitted fabric test method) 8.10, using the sample after scouring and hot water treatment as a sample.
  • the tube braid is dried with hot air at 60 ° C. for 30 minutes, and then the tube braid is left for 24 hours in an Espec constant temperature and humidity chamber LHU-123 conditioned at a temperature of 20 ° C. and a humidity of 65% RH.
  • the tubular knitting was allowed to stand for 24 hours in a thermo-hygrostat adjusted to a temperature of 30 ° C. and a humidity of 90% RH, and the weight of the tubular knitting (W2) was measured.
  • the tubular knitting was dried with hot air at 105 ° C. for 2 hours, and the weight (W3) of the tubular knitting after absolutely dried was measured.
  • the moisture absorption rate MR1 (%) when left standing in an atmosphere of a temperature of 20 ° C. and a humidity of 65% RH from the absolutely dry state for 24 hours is calculated according to the following formula.
  • the difference in moisture absorption rate ( ⁇ MR ) was calculated. The measurement was performed five times for each sample, and the average value was defined as the difference in moisture absorption rate ( ⁇ MR).
  • an L * value was measured using a Minolta spectrophotometer CM-3700d model with a D65 light source, a viewing angle of 10 °, and an optical condition of SCE (regular reflection light removal method). In addition, the measurement was performed 3 times per sample, and the average value was defined as L * value.
  • the spun yarn was obtained by allowing the composite polymer flow to be discharged at a discharge rate of 25 g / min from the discharge hole through a spinning pack incorporating the sea-island composite base shown.
  • the distribution plate immediately above the discharge plate is provided with 18 distribution holes per discharge hole for the island component, and the circumferential groove 1 shown in 16 of FIG. The one with a distribution hole formed at every ° was used.
  • the discharge introduction hole length is 5 mm
  • the angle of the reduction hole is 60 °
  • the discharge hole diameter is 0.18 mm
  • the discharge hole length / discharge hole diameter is 2.2
  • the number of discharge holes is 72.
  • the spun yarn is cooled by cooling air with an air temperature of 20 ° C.
  • Table 1 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers. Although there were slight cracks in the sea component, there was almost no decrease in hygroscopicity due to the hot water treatment, and the hygroscopicity was good even after the hot water treatment. Further, the color developability was also good, and all of leveling, quality, and dry feeling were acceptable levels.
  • Example 1 A false twisted yarn was prepared in the same manner as in Example 1 except that the ratio (T / R) of the outermost layer thickness T to the fiber diameter R was changed as shown in Table 1.
  • Table 1 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers.
  • Examples 2 to 5 as T / R increases, sea component cracks decrease and color developability improves.
  • the hygroscopicity after hot water treatment was low, but the hygroscopicity was good. In all cases, all of leveling, quality and dryness were acceptable.
  • Comparative Example 1 has good color developability, leveling, quality, and dry feeling, but because T / R is large, the volume swelling of the hygroscopic polymer of the island component was suppressed. The hygroscopicity was low after both treatments.
  • Example 2 A false twisted yarn was prepared in the same manner as in Example 1 except that a conventionally known pipe-type sea-island composite base (18 islands per discharge hole) described in Japanese Patent Application Laid-Open No. 2007-10023 was used.
  • Table 1 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers.
  • a conventionally known pipe-type sea-island composite die is used, since the outermost layer of the obtained fiber is thin, cracks of the sea component accompanying the volume swelling of the hygroscopic polymer of the island component in hydrothermal treatment are extremely large. It was a thing. Due to the cracking of the sea component, the hygroscopic polymer of the island component was eluted during the hot water treatment, and the hygroscopicity was greatly reduced after the hot water treatment, resulting in poor hygroscopicity. In addition, a large number of dyed spots and fluff due to cracks in the sea components were observed, and the leveling and quality were extremely poor. Furthermore, due to the cracking of the sea component, a part of the hygroscopic polymer of the island component was exposed on the surface, and there were sliminess and stickiness, and the dry feeling was inferior.
  • Comparative Example 3 A false twisted yarn was produced in the same manner as in Example 1 except that the core / sheath composite die was used.
  • the sea component and the island component shown in Table 1 correspond to the sheath component and the core component, respectively.
  • Table 1 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers.
  • the sheath component was extremely cracked due to the volume swelling of the hygroscopic polymer as the core component. Due to the cracking of the sheath component, the hygroscopic polymer of the core component was eluted during the hot water treatment, the hygroscopicity was greatly reduced after the hot water treatment, and the hygroscopicity was poor. In addition, a large number of dyed spots and fluff due to cracking of the sheath component were observed, and the leveling and quality were extremely poor. Furthermore, due to cracking of the sheath component, part of the hygroscopic polymer of the core component was exposed on the surface, and there was sliminess and stickiness, and the dry feeling was also inferior.
  • Example 6 In the sea-island composite die distribution plate described in Example 1, false twisted yarn was produced in the same manner as in Example 1 except that the number and arrangement of island components were changed as shown in Table 2.
  • Table 2 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers. Even when the number and arrangement of the island components were changed, the sea components were hardly cracked and the hygroscopicity after the hot water treatment was good. Further, the color developability was also good, and all of leveling, quality, and dry feeling were acceptable levels.
  • Example 12 A false twisted yarn was produced in the same manner as in Example 9 except that the sea / island composite ratio was changed as shown in Table 3.
  • Table 3 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers. At any sea / island composite ratio, there were few cracks in the sea components, and all of the hygroscopicity, color development, leveling, quality, and dryness after the hot water treatment were good.
  • Example 16 In the distribution plate of the sea-island composite die described in Example 1, the shape of the island component is hexagonal as shown in FIG. 1 (h) in Example 16, and trilobal as shown in FIG. 1 (i) in Example 17.
  • Example 18 a false twisted yarn was produced in the same manner as in Example 1 except that the shape of the center side of the fiber cross section was changed to a non-circular shape in the island component arranged on the outermost periphery as shown in FIG. .
  • Table 3 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers. If you change the shape of the island component, There were few cracks in the sea component, and all of the hygroscopicity, color development, leveling, quality and dryness after the hot water treatment were good. In particular, in Example 18, since the island component arranged on the outermost periphery is not circular on the fiber inner layer side but on the fiber inner layer side, stress concentrates on the non-circular portion, and crack propagation to the fiber surface layer occurs. Was cut off and was excellent in the effect of suppressing cracking of sea components.
  • Example 19 In the distribution plate of the sea-island composite base described in Example 1, the number and arrangement of island components are changed, and the diameter r1 of the island components arranged to pass through the center of the fiber cross section and the diameter r2 of the other island components A false twisted yarn was produced in the same manner as in Example 1 except that the ratio (r1 / r2) was changed as shown in Table 4.
  • Table 4 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers. As r1 / r2 increased, the cracking of the sea component decreased and the color developability improved, while the hygroscopicity after the hot water treatment decreased, but the hygroscopicity was good. In all cases, all of leveling, quality and dryness were acceptable.
  • Example 24 (Examples 24 to 26), (Comparative Examples 4 and 5) A false twisted yarn was prepared in the same manner as in Example 9, except that the number average molecular weight and copolymerization rate of polyethylene glycol, which is a copolymer component of the island component, were changed as shown in Table 5.
  • Table 5 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers.
  • Examples 24 to 26 even when the number average molecular weight and copolymerization rate of polyethylene glycol were changed, the cracking of the sea component was small, and the moisture absorption, color development, leveling, quality, dry feeling after hot water treatment All were good.
  • Comparative Examples 4 and 5 the sea component is not cracked and the color development, leveling and dryness are good, but the hygroscopicity of the island component's hygroscopic polymer is low. Later, the hygroscopicity was low and the hygroscopicity was extremely poor.
  • Example 27 A false twisted yarn was produced in the same manner as in Example 9 except that the island component was changed to polybutylene terephthalate copolymerized as shown in Table 6 in terms of the number average molecular weight of polyethylene glycol and the copolymerization rate.
  • Table 6 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers. Even when polybutylene terephthalate copolymerized with polyethylene glycol is used as the island component, there are few cracks in the sea component, and all of the hygroscopicity, color development, leveling, quality, and dryness after hot water treatment are good. It was.
  • Example 29 and 30 The island component was changed to nylon 6 obtained by copolymerizing 30% by weight of polyethylene glycol having a number average molecular weight of 3400 g / mol (PEG 4000S manufactured by Sanyo Chemical Industries) in Example 29, and in Example 30 except that it was changed to “PEBAX MH1657” manufactured by Arkema. A false twisted yarn was produced in the same manner as in Example 9.
  • Table 6 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers.
  • polyether amide was used as an island component, sea component cracking was small, and all of the hygroscopicity, coloring property, leveling property, quality and dryness after hot water treatment were good.
  • Example 31 A false twisted yarn was produced in the same manner as in Example 9 except that the island component was changed to “PAS-40N” manufactured by Toray.
  • Table 6 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers.
  • polyether ester amide was used as an island component, sea component cracking was small, and all of the hygroscopicity, color developability, leveling property, quality and dryness after hot water treatment were good.
  • Table 7 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers.
  • a sea component when cationic dyeable polyester is used as in Example 32, or when polybutylene terephthalate is used as in Example 33, cracks in the sea component are small, and the hygroscopicity after hydrothermal treatment. The coloring property, leveling property, quality, and dry feeling were all good.
  • Example 34 the discharge amount is 32 g / min, the number of discharge holes of the sea-island composite base is 24, in Example 35, the discharge amount is 32 g / min, the number of discharge holes in the sea-island composite base is 48, and in Example 36, the discharge amount is 32 g. / Min.
  • Example 37 a false twisted yarn was produced in the same manner as in Example 19 except that the discharge rate was changed to 38 g / min.
  • a false twisted yarn of 84 dtex-24f in Example 34, 84 dtex-48f in Example 35, 84 dtex-72f in Example 36, and 100 dtex-72f in Example 37 was obtained.
  • Table 7 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers. Even when the fineness and single yarn fineness were changed, there were few cracks in the sea component, and all of the hygroscopicity, coloring property, leveling property, quality, and dryness after the hot water treatment were good.
  • Example 6 A false twisted yarn was prepared in the same manner as in Example 1 except that the spinneret for single component (number of holes: 72, round hole) was changed and spinning and drawing false twist were performed using only the hygroscopic polymer.
  • Table 8 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers. Since the fiber is composed only of a hygroscopic polymer, the hygroscopicity after the hot water treatment was high. However, the discharge from the spinneret was unstable, and the obtained fibers were thick and thin, had low strength, and many dyed spots and fluff were found, and the leveling and quality were extremely inferior. Furthermore, since the hygroscopic polymer was exposed on the fiber surface, there were sliminess and stickiness, and the dry feeling was extremely poor.
  • Example 19 (Comparative Example 7) In Example 19, a false twisted yarn was prepared in the same manner as in Example 19 except that the sea component and the island component were changed to change the sea / island composite ratio to 30/70.
  • Table 8 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers. Although there is no cracking of the sea component and the hygroscopicity and color developability after hot water treatment are good, the sea component's hygroscopic polymer is exposed on the fiber surface, so there is sliminess and stickiness, and the dry feeling is extremely inferior It was a thing. In addition, leveling and quality did not reach acceptable levels.
  • Table 8 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers. Although there was no cracking of the sea component and the color development, leveling, quality and dryness were good, neither the sea component nor the island component was a hygroscopic polymer, so the hygroscopicity was extremely poor.
  • a false twisted yarn was prepared in the same manner as in Example 9, except that the copolymer was changed to polyethylene copolymer terephthalate.
  • Table 9 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers. Even when polyethylene terephthalate copolymerized with polyethylene glycol and ethylene oxide adduct of bisphenol A is used as the island component, there is little cracking of the sea component, and moisture absorption, color development, leveling, quality, dryness after hot water treatment All the feelings were good.
  • Example 38 false twisted yarn was prepared in the same manner as in Example 38 except that the copolymerization ratio of the island component, “m + n” of the ethylene oxide adduct of bisphenol A and the copolymerization rate were changed as shown in Table 9. .
  • Table 9 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers. Even when "m + n" and the copolymerization rate of ethylene oxide adduct of bisphenol A are changed, there are few cracks in sea components, and all of moisture absorption, color development, leveling, quality, and dry feeling after hot water treatment It was good.
  • Example 40 false twisted yarn was produced in the same manner as in Example 40 except that the copolymerization rate of polyethylene glycol, which is a copolymer component of the island component, was changed as shown in Table 10.
  • Table 10 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers. Even when the copolymerization rate of polyethylene glycol was changed, there were few cracks in the sea component, and all of the hygroscopicity, coloring property, leveling property, quality and dryness after the hot water treatment were good.
  • Example 44 A false twisted yarn was produced in the same manner as in Example 38 except that the number average molecular weight of polyethylene glycol, which is a copolymer component of the island component, was changed as shown in Table 10.
  • Table 10 shows the evaluation results of the fiber characteristics and fabric characteristics of the obtained fibers. Even when the number average molecular weight of polyethylene glycol was changed, there were few cracks in the sea component, and all of the hygroscopicity, coloring property, leveling property, quality and dry feeling after the hot water treatment were good.
  • the sea-island type composite fiber of the present invention suppresses the cracking of the sea component accompanying the volume swelling of the hygroscopic polymer of the island component in the hydrothermal treatment such as dyeing, When this is done, there is little occurrence of dyed spots and fluff, and the quality is excellent. In addition, since the elution of the hygroscopic polymer is suppressed, the hygroscopic property is excellent even after the hot water treatment. Furthermore, when the sea component is polyester, the polyester fiber has an inherent dry feeling. Therefore, it can be suitably used as a fiber structure such as a woven or knitted fabric or a non-woven fabric for clothing.
  • Discharge plate 10 (a). Measuring hole 1 10- (b). Measuring hole 2 11- (a). Distribution groove 1 11- (b). Distribution groove 2 12- (a). Distribution hole 1 12- (b). Distribution hole 2 13. Discharge introduction hole 14. Reduced hole 15. Discharge hole 16. Annular groove

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Multicomponent Fibers (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Woven Fabrics (AREA)
PCT/JP2017/024110 2016-07-11 2017-06-30 吸湿性に優れた海島型複合繊維、仮撚糸および繊維構造体 WO2018012318A1 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP17827448.6A EP3483312B1 (en) 2016-07-11 2017-06-30 Sea-islands type composite fiber having excellent moisture absorbability, textured yarn, and fiber structure
KR1020187032728A KR102391109B1 (ko) 2016-07-11 2017-06-30 흡습성이 우수한 해도형 복합섬유, 가연사 및 섬유 구조체
SG11201811798RA SG11201811798RA (en) 2016-07-11 2017-06-30 Sea-islands type composite fiber having excellent moisture absorbability, false twist yarn, and fiber structure
CN201780039135.0A CN109415846B (zh) 2016-07-11 2017-06-30 吸湿性优异的海岛型复合纤维、假捻丝和纤维结构体
US16/316,481 US20190242033A1 (en) 2016-07-11 2017-06-30 Sea-islands type composite fiber having excellent moisture absorbability, false twist yarn, and fiber structure
JP2017549104A JP6973079B2 (ja) 2016-07-11 2017-06-30 吸湿性に優れた海島型複合繊維、仮撚糸および繊維構造体

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2016-136660 2016-07-11
JP2016136660 2016-07-11
JP2017-019577 2017-02-06
JP2017019577 2017-02-06

Publications (1)

Publication Number Publication Date
WO2018012318A1 true WO2018012318A1 (ja) 2018-01-18

Family

ID=60951823

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/024110 WO2018012318A1 (ja) 2016-07-11 2017-06-30 吸湿性に優れた海島型複合繊維、仮撚糸および繊維構造体

Country Status (8)

Country Link
US (1) US20190242033A1 (ko)
EP (1) EP3483312B1 (ko)
JP (1) JP6973079B2 (ko)
KR (1) KR102391109B1 (ko)
CN (1) CN109415846B (ko)
SG (1) SG11201811798RA (ko)
TW (1) TWI722215B (ko)
WO (1) WO2018012318A1 (ko)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019112745A (ja) * 2017-12-25 2019-07-11 東レ株式会社 吸湿性に優れた繊維構造体およびそれを用いた衣料
WO2019176811A1 (ja) * 2018-03-13 2019-09-19 東レ株式会社 吸湿性に優れた海島型複合繊維、繊維構造体およびポリエステル組成物
WO2019194087A1 (ja) * 2018-04-02 2019-10-10 東レ株式会社 着用快適性に優れた衣服
JP2020152882A (ja) * 2019-03-22 2020-09-24 株式会社オートネットワーク技術研究所 コネクタ付きケース、コネクタ付きワイヤーハーネス、及びエンジンコントロールユニット
WO2021059760A1 (ja) * 2019-09-26 2021-04-01 東レ株式会社 衣服
WO2021059759A1 (ja) * 2019-09-26 2021-04-01 東レ株式会社 衣服
WO2022050291A1 (ja) 2020-09-07 2022-03-10 東レ株式会社 海島型複合繊維および海島型複合繊維を含む繊維製品

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111041579B (zh) * 2019-12-29 2021-05-14 江苏恒力化纤股份有限公司 一种地毯纱及其制备方法
CN113089124B (zh) * 2021-03-30 2023-01-17 上海华峰超纤科技股份有限公司 一种防掉毛pu超纤革用定岛型海岛纤维及其制备和应用
CN113603875A (zh) * 2021-09-10 2021-11-05 四川大学 一种可降解聚酯/聚醚嵌段共聚物、聚乳酸可降解复合纤维及其制备方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04361615A (ja) * 1991-06-11 1992-12-15 Kanebo Ltd 吸湿及び透湿性を有する繊維
JPH06287815A (ja) * 1993-03-30 1994-10-11 Mitsubishi Rayon Co Ltd 芯鞘複合繊維、その複合紡糸口金及びその製造方法
JPH0835121A (ja) * 1994-07-21 1996-02-06 Kanebo Ltd 分割可能な複合繊維及びその構造物
JPH1046433A (ja) * 1996-07-25 1998-02-17 Nippon Ester Co Ltd 吸湿性ポリエステル繊維とその製造法
WO1999049112A1 (fr) * 1998-03-25 1999-09-30 Teijin Limited Fibre de polyethylene naphtalate
JP2002155426A (ja) * 2000-11-22 2002-05-31 Kuraray Co Ltd 複合繊維および該複合繊維を用いた中空繊維の製造方法
JP2004277911A (ja) * 2003-03-14 2004-10-07 Toray Ind Inc 吸湿性に優れた海島型ポリエステル繊維およびその製造方法ならびに吸湿性布帛
JP2014227633A (ja) * 2013-05-24 2014-12-08 東レ株式会社 複合繊維
JP2016069770A (ja) * 2014-09-30 2016-05-09 Ｋｂセーレン株式会社 海島型複合繊維

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3139315B2 (ja) 1995-01-25 2001-02-26 東レ株式会社 吸湿性に優れた共重合ポリエステルを用いた吸湿性複合繊維
EP1087043B1 (en) * 1998-03-24 2006-06-14 Unitika Ltd. Synthetic fiber capable of absorbing and desorbing moisture, entangled yarn blend using the same, knitted and woven goods using thesame, and nonwoven fabric using the same
JP2000239918A (ja) * 1999-02-22 2000-09-05 Toray Ind Inc 吸湿性に優れた扁平芯鞘複合繊維
US6465094B1 (en) * 2000-09-21 2002-10-15 Fiber Innovation Technology, Inc. Composite fiber construction
JP2001172374A (ja) 2000-10-16 2001-06-26 Toray Ind Inc 吸湿性に優れた共重合ポリエステル
KR101250683B1 (ko) * 2004-03-30 2013-04-03 데이진 화이바 가부시키가이샤 해도형 복합섬유 및 그 제조방법
JP2006104379A (ja) 2004-10-07 2006-04-20 Teijin Fibers Ltd ポリエステル組成物、その製造方法、それよりなるポリエステル成形品及び吸湿性ポリエステル繊維
KR100660934B1 (ko) * 2004-11-25 2006-12-26 주식회사 새 한 폴리유산 해도형 극세사 및 제조방법
CN100400725C (zh) * 2006-02-09 2008-07-09 北京服装学院 抗静电、吸湿、可染皮芯型复合纤维及其制备方法
JP5543213B2 (ja) * 2007-11-09 2014-07-09 帝人株式会社 ワイピング製品
US8969224B2 (en) * 2010-01-29 2015-03-03 Toray Industries, Inc. Sea-island composite fiber, ultrafine fiber, and composite spinneret
JP6356976B2 (ja) * 2014-02-07 2018-07-11 Ｋｂセーレン株式会社 海島型複合繊維

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04361615A (ja) * 1991-06-11 1992-12-15 Kanebo Ltd 吸湿及び透湿性を有する繊維
JPH06287815A (ja) * 1993-03-30 1994-10-11 Mitsubishi Rayon Co Ltd 芯鞘複合繊維、その複合紡糸口金及びその製造方法
JPH0835121A (ja) * 1994-07-21 1996-02-06 Kanebo Ltd 分割可能な複合繊維及びその構造物
JPH1046433A (ja) * 1996-07-25 1998-02-17 Nippon Ester Co Ltd 吸湿性ポリエステル繊維とその製造法
WO1999049112A1 (fr) * 1998-03-25 1999-09-30 Teijin Limited Fibre de polyethylene naphtalate
JP2002155426A (ja) * 2000-11-22 2002-05-31 Kuraray Co Ltd 複合繊維および該複合繊維を用いた中空繊維の製造方法
JP2004277911A (ja) * 2003-03-14 2004-10-07 Toray Ind Inc 吸湿性に優れた海島型ポリエステル繊維およびその製造方法ならびに吸湿性布帛
JP2014227633A (ja) * 2013-05-24 2014-12-08 東レ株式会社 複合繊維
JP2016069770A (ja) * 2014-09-30 2016-05-09 Ｋｂセーレン株式会社 海島型複合繊維

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3483312A4 *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019112745A (ja) * 2017-12-25 2019-07-11 東レ株式会社 吸湿性に優れた繊維構造体およびそれを用いた衣料
CN111886369B (zh) * 2018-03-13 2023-01-03 东丽株式会社 吸湿性优异的海岛型复合纤维、纤维结构体及聚酯组合物
JP7338467B2 (ja) 2018-03-13 2023-09-05 東レ株式会社 吸湿性に優れた海島型複合繊維、繊維構造体およびポリエステル組成物
TWI828663B (zh) * 2018-03-13 2024-01-11 日商東麗股份有限公司 吸濕性優異的海島型複合纖維、纖維構造體、聚酯組成物及共聚合聚酯之製造方法
EP3767017A4 (en) * 2018-03-13 2022-07-06 Toray Industries, Inc. HIGHLY HYGROSCOPIC ISLAND AND SEA TYPE COMPOSITE FIBER, FIBER STRUCTURE AND POLYESTER COMPOSITION
WO2019176811A1 (ja) * 2018-03-13 2019-09-19 東レ株式会社 吸湿性に優れた海島型複合繊維、繊維構造体およびポリエステル組成物
JPWO2019176811A1 (ja) * 2018-03-13 2021-01-14 東レ株式会社 吸湿性に優れた海島型複合繊維、繊維構造体およびポリエステル組成物
CN111886369A (zh) * 2018-03-13 2020-11-03 东丽株式会社 吸湿性优异的海岛型复合纤维、纤维结构体及聚酯组合物
JPWO2019194087A1 (ja) * 2018-04-02 2021-02-18 東レ株式会社 着用快適性に優れた衣服
CN112004434A (zh) * 2018-04-02 2020-11-27 东丽株式会社 穿着舒适性优异的衣物
WO2019194087A1 (ja) * 2018-04-02 2019-10-10 東レ株式会社 着用快適性に優れた衣服
JP7439512B2 (ja) 2018-04-02 2024-02-28 東レ株式会社 着用快適性に優れた衣服
JP2020152882A (ja) * 2019-03-22 2020-09-24 株式会社オートネットワーク技術研究所 コネクタ付きケース、コネクタ付きワイヤーハーネス、及びエンジンコントロールユニット
JP7259455B2 (ja) 2019-03-22 2023-04-18 株式会社オートネットワーク技術研究所 コネクタ付きケース、コネクタ付きワイヤーハーネス、及びエンジンコントロールユニット
WO2021059760A1 (ja) * 2019-09-26 2021-04-01 東レ株式会社 衣服
JP7456384B2 (ja) 2019-09-26 2024-03-27 東レ株式会社 衣服
EP4035547A4 (en) * 2019-09-26 2023-09-27 Toray Industries, Inc. CLOTHING
WO2021059759A1 (ja) * 2019-09-26 2021-04-01 東レ株式会社 衣服
WO2022050291A1 (ja) 2020-09-07 2022-03-10 東レ株式会社 海島型複合繊維および海島型複合繊維を含む繊維製品

Also Published As

Publication number Publication date
JP6973079B2 (ja) 2021-11-24
EP3483312A4 (en) 2019-12-11
CN109415846B (zh) 2021-12-28
TWI722215B (zh) 2021-03-21
JPWO2018012318A1 (ja) 2019-04-25
EP3483312B1 (en) 2023-06-07
SG11201811798RA (en) 2019-02-27
TW201821664A (zh) 2018-06-16
KR102391109B1 (ko) 2022-04-27
CN109415846A (zh) 2019-03-01
KR20190028643A (ko) 2019-03-19
EP3483312A1 (en) 2019-05-15
US20190242033A1 (en) 2019-08-08

Similar Documents

Publication Publication Date Title
WO2018012318A1 (ja) 吸湿性に優れた海島型複合繊維、仮撚糸および繊維構造体
US20200087820A1 (en) Eccentric core-sheath composite fiber and combined filament yarn
EP3257976B1 (en) Core-sheath conjugated fiber, slit fiber, and method for manufacturing these fibers
WO2009088008A1 (ja) 常圧カチオン可染性ポリエステル及び繊維
EP2829643B1 (en) Polymethylpentene conjugate fiber and fiber structure comprising same
JP2019502036A (ja) 芯鞘型複合繊維、仮撚糸及び繊維構造体
EP3502326B1 (en) False twist yarn comprising dyeable polyolefin fibers
EP3533909B1 (en) Polymer alloy fiber and fiber structure formed from same
CN112639183A (zh) 包含聚酯短纤维的纺纱以及包含所述纺纱的织物
JP6939102B2 (ja) 吸湿性に優れた芯鞘型複合繊維、仮撚糸および繊維構造体
JP2020076172A (ja) 吸湿性極細複合繊維および繊維構造体
JP2020020076A (ja) 吸湿性海島型複合繊維および繊維構造体
KR101558058B1 (ko) 신축성이 우수한 폴리에스테르 복합섬유용 방사구금 및 이를 이용한 폴리에스테르 복합섬유 제조방법
JP7268365B2 (ja) 吸湿性芯鞘型複合繊維および繊維構造体
WO2022050291A1 (ja) 海島型複合繊維および海島型複合繊維を含む繊維製品
JP4669546B2 (ja) 杢調ポリエステル織編物
JP2001214335A (ja) 低収縮ポリエステル太細糸およびそれからなるポリエステル混繊糸
JP2021179053A (ja) 吸湿性および耐摩耗性に優れた海島型複合繊維
JP2023014998A (ja) 制電性および吸湿性に優れた海島型複合繊維
JP2001207338A (ja) 潜在捲縮発現性ポリエステル糸の製造方法
JP2001207337A (ja) 潜在捲縮発現性ポリエステル糸の製造方法
JPS6317925B2 (ko)
JP2005299044A (ja) 易染性ポリエステル繊維とポリトリメチレンテレフタレート系繊維との混用品

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2017549104

Country of ref document: JP

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 20187032728

Country of ref document: KR

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17827448

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2017827448

Country of ref document: EP

Effective date: 20190211