CN106917160A - A kind of hygroscopicity sheath-core type conjugate fiber, false twist yarn and fiber body structure - Google Patents

A kind of hygroscopicity sheath-core type conjugate fiber, false twist yarn and fiber body structure Download PDF

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Publication number
CN106917160A
CN106917160A CN201511035704.3A CN201511035704A CN106917160A CN 106917160 A CN106917160 A CN 106917160A CN 201511035704 A CN201511035704 A CN 201511035704A CN 106917160 A CN106917160 A CN 106917160A
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China
Prior art keywords
sheath
core
fiber
type conjugate
core component
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CN201511035704.3A
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Inventor
成娟
旦浩
旦浩一
鹿野秀和
望月克彦
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Toray Fibers and Textiles Research Laboratories China Co Ltd
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Toray Fibers and Textiles Research Laboratories China Co Ltd
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Priority to CN201511035704.3A priority Critical patent/CN106917160A/en
Priority to CN201680057381.4A priority patent/CN108138377A/en
Priority to KR1020187021318A priority patent/KR20180097712A/en
Priority to PCT/CN2016/111763 priority patent/WO2017114313A1/en
Priority to JP2018534054A priority patent/JP2019502036A/en
Publication of CN106917160A publication Critical patent/CN106917160A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/66—Polyesters containing oxygen in the form of ether groups
    • C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/672—Dicarboxylic acids and dihydroxy compounds
    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
    • D01F6/84—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyesters
    • 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
    • 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
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • 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
    • 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
    • D02G1/022—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 while simultaneously drawing the yarn

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Multicomponent Fibers (AREA)
  • Woven Fabrics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The present invention provides a kind of sheath-core type conjugate fiber, and the core component and sheath composition of the fiber are crystalline polymer, and core component is hygroscopic polymer；At least part of core component is exposed on surface on the cross section of the sheath-core type conjugate fiber, and cross-sectional circumference R long with expose the length summation r in the core component of surface portionsRatio rs/ R is 0.05~0.40；The extrapolation melt initiation temperature degree of the sheath-core type conjugate fiber is more than 150 DEG C, and hydroscopicity difference △ MR after hot water treatment are 2.0~10.0%.The fiber extends and false twisting engineering can suppress to melt, fracture of wire and filoplume occur few, it is good that engineering passes through property, and specking and filoplume occur less when forming the fiber body structures such as braid, while excellent quality, the rupture of sheath part when can suppress the hygroscopic polymer volumetric expansion of core component during the hot water treatments such as dyeing, and the dissolution of hygroscopic polymer can be suppressed, also there is excellent moisture pick-up properties after hot water treatment.

Description

A kind of hygroscopicity sheath-core type conjugate fiber, false twist yarn and fiber body structure
Technical field
Crystalline polymer is the present invention relates to a kind of core component and sheath composition, and core component is hygroscopic polymer, At least part of core component exposes the sheath-core type conjugate fiber on surface on fiber cross section.Specifically, being related to one kind In order to suppress to extend and false twisting engineering occurs melts, the generation of fracture of wire and filoplume is less, engineering is by the way that property is good, shape The specking and filoplume that are produced into fabric and when compiling the fiber body structure such as thing are few, excellent quality while, can suppress to pass through The rupture of the sheath composition that core component hygroscopic polymer volumetric expansion brings and hygroscopicity when crossing the hot water treatments such as dyeing Hygroscopicity is still excellent after dissolution, the hot water treatment of polymer, sheath-core type conjugate fiber suitable for dress material purposes.
Background technology
Because polyester fiber price is low, mechanical property is excellent, purposes is extremely wide.But, due to lacking hygroscopicity, Feeling of oppression and heat easily is produced in summer high humility, easily electrostatic is produced during winter low humidity, from the viewpoint of snugness of fit For, there are problem to be solved.
In order to improve disadvantages mentioned above, in terms of the hygroscopic method of polyester fiber is assigned, have so far various Motion.Assign the hygroscopic conventional method of polyester fiber, such as combined polymerization hydrophilic compounds or addition in the polyester Hydrophilic compounds, wherein hydrophilic compounds can be as an example polyethylene glycol.
For example, in patent document 1, for polyester, it is proposed that use the polyester of combined polymerization polyethylene glycol as moisture absorption Property polymer make fiber motion.Hygroscopic polymer individually carries out fibrosis in the motion, has polyester fiber Hygroscopicity.
In patent document 2, it is proposed that the core shift core that sheath composition is hygroscopic polymer, core component is hydrophobic polymer The motion of sheath composite fibre.In the motion, because core component is hydrophobic polymer, fiber is imparted for moisture absorption Morphological stability during with dry reversible change.
In patent document 3, it is proposed that the polyester of the core component polyethylene glycol that has been combined polymerization, sheath composition are poly- terephthaldehyde The sheath-core type conjugate fiber of sour glycol ester.In the motion, because core component is hygroscopic polymer so that polyester is fine Dimension has hygroscopicity.
In patent document 4,5, it is proposed that core component is the combined polymerization polymer of polyethylene glycol, sheath composition for poly- right PET, and sheath a part opening sheath-core type conjugate fiber.Although core component has hygroscopicity, In these motions, due to the dissolution of core component, the doughnut that shape is C-shaped assigns polyester fiber light weight.Make It is the concrete example of the core component of easy dissolution, the weight average molecular weight of 8~70wt% Patent Document 4 discloses combined polymerization The polyethylene terephthalate of the polyethylene glycol of 500~8000g/mol, i.e. below number-average molecular weight 8000g/mol Ester；The molecular weight of 17wt% is poly- to benzene for the polyethylene glycol of 3000g/mol Patent Document 5 discloses combined polymerization Naphthalate.
But, in the method that above-mentioned patent document 1 is recorded, all expose the absorbent polymer in fiber surface due to spinning The presence of silk oiling agent and expand, compile in spinning, extension, false twisting engineering and system, in weaving process, because with sieve Draw or filar guide occurs friction and causes to come off, is deposited on roller and filar guide, its consequence is exactly easily to produce fracture of wire And filoplume, engineering is problematic in that by property and quality.And during the hot water treatments such as dyeing, the copolymerization of absorbent polymer Synthesis segregation ethylene glycol dissolution, hygroscopicity is low after there is hot water treatment.
Patent document 2 record method, due to core component be hydrophobic polymer, although for moisture absorption and it is dry can Inversion has morphological stability, but because at least fiber surface of more than half has absorbent polymer to expose, with The methods described of patent document 1 is the same, it may occur that the expansion of absorbent polymer with come off, engineering by property and quality all deposit In problem.
The method that patent document 3 is recorded, because the hygroscopic polymer of core component is fully wrapped around by sheath composition, therefore energy Enough suppress the expansion that hygroscopic polymer causes by spinning oil, and because de- with what roller and filar guide friction caused Fall, although engineering is improved by performance, but dyeing etc. hot water treatment when core component absorbent polymer generating body Product expansion, sheath composition is destroyed, and the problem of low quality is still present.Especially, with the breach of sheath composition as rise The damp absorbent polyester dissolution of point core component, hygroscopicity is low after there is hot water treatment.
The method that patent document 4,5 is recorded, because the hygroscopic polymer only a fraction of core component is exposed in fiber Surface, therefore, it is possible to suppress the expansion that hygroscopic polymer causes by spinning oil, and because being rubbed with roller and filar guide What wiping caused is come off, and engineering is improved by performance.But, the purpose is to make core component dissolution, due to by contaminating The hot water treatments such as color cause the complete dissolution of core component, and the C font polyester doughnut for obtaining does not have hygroscopicity.
[prior art literature]
[patent document]
[patent document 1] JP 2006-104379 publications,
[patent document 2] Unexamined Patent 9-13257 publications,
[patent document 3] JP 2001-172374 publications,
[patent document 4] Unexamined Patent 6-200473 publications,
[patent document 5] JP 2007-131980 publications.
The content of the invention
Problem of the invention is to solve above-mentioned technical problem point, there is provided a kind of in order to suppress to extend and false twisting engineering hair Raw melts, the generation of fracture of wire and filoplume less, engineering by property it is good, form fabric and compile the fiber body structures such as thing when The specking and filoplume of generation are few, excellent quality while, core component is inhaled when can suppress by hot water treatments such as dyeing Moist polymer volume expands moisture absorption after the rupture of sheath composition and dissolution, the hot water treatment of hygroscopic polymer for bringing Property sheath-core type conjugate fiber still excellent, suitable for dress material purposes.
The problem of the invention described above can be resolved by the core sheath composite fibre with following characteristics.The core-sheath-type The core component and sheath composition of composite fibre are crystalline polymer, and core component is hygroscopic polymer；The core sheath At least part of core component is exposed on surface on the cross section of type composite fibre, and cross-sectional circumference R long with expose The length summation r of the core component of surface portionSRatio rS/ R is 0.05~0.40；Outside the sheath-core type conjugate fiber Melt initiation temperature degree is pushed away more than 150 DEG C, and hydroscopicity difference Δ MR after hot water treatment is 2.0~10.0%.
Meanwhile, in the cross section of fiber, cross-sectional circumference R long and the maximum for exposing the core component length in surface portion Value rMRatio rM/ R is 0.01~0.20, the combined weight ratio preferably 10/90~70/30 of core component and sheath composition.
The hygroscopic polymer of foregoing core component preferably take polyethers as polyether ester, polyetheramides, the polyethers of combined polymerization composition At least one in carboxylic acid amide esters.Meanwhile, the preferred polyethylene glycol of polyethers, polypropylene glycol, polytetramethylene glycol.
Preferably with aromatic binary carboxylic acid and aliphatic dihydroxy alcohol as main composition, polyethers is copolymerization to foregoing polyether ester Synthesis point.During the preferred ethylene glycol of the aliphatic dihydroxy alcohol, the number-average molecular weight preferably 8000~30000g/mol of polyethers, The combined polymerization rate preferably 10~35wt% of polyethers.Meanwhile, during the preferred BDO of the aliphatic dihydroxy alcohol, gather The number-average molecular weight of ether preferably 2000~30000g/mol, the combined polymerization rate preferably 10~60wt% of polyethers.
Also, the sheath composition preferred cationic dyeable polyester of foregoing sheath-core type conjugate fiber.
False twist yarn of the invention is closed to twist with the fingers and formed by 2 sheath-core type conjugate fibers mentioned previously above, and at least the one of fiber body structure Part preferentially uses foregoing sheath-core type conjugate fiber and/or false twist yarn.
By means of the invention it is possible to suppress extend and false twisting engineering occur melt, the generation of fracture of wire and filoplume is few, work It is good that journey passes through property.Meanwhile, it is few with the specking and filoplume produced when compiling the fiber body structures such as thing to form fabric, quality It is excellent.Further, it is possible to suppress the sheath that core component hygroscopic polymer volumetric expansion brings during by hot water treatments such as dyeing Hygroscopicity is still excellent, suitable for dress material purposes after the rupture of composition and the dissolution of hygroscopic polymer, hot water treatment Sheath-core type conjugate fiber.
Brief description of the drawings
(a) of Fig. 1~(m) is the schematic diagram of the section configuration of the core sheath composite fibre of the present invention enumerated, in figure, 1 represents core component, and 2 represent sheath composition.
Fig. 2 is the schematic diagram of the section configuration of core sheath composite fibre prepared by comparative example 1.
Specific embodiment
Sheath-core type conjugate fiber of the invention, core component and sheath composition are crystalline polymer, and core component is moisture absorption Property polymer, at least part of core component is exposed on surface on fiber cross section, and cross-sectional circumference R long with expose In the length summation r of the core component of surface portionSRatio rS/ R is 0.05~0.40；The sheath-core type conjugate fiber Extrapolation melt initiation temperature degree is more than 150 DEG C, and hydroscopicity difference Δ MR after hot water treatment is 2.0~10.0%.
Generally, hygroscopic polymer is susceptible to expansion because of the presence of spinning oil, is sent out with roller or filar guide Raw friction causes to come off and formed the dirt of accumulation, causes fracture of wire and filoplume, thus engineering is bad by property, and by Specking and filoplume can occur when forming fabric and compiling the fiber body structures such as thing, there is a problem of that quality is low.Meanwhile, because , also there is interfibrous melting in the contact in extension and false twisting engineering with heated roller and heater.In order to Betterment works passes through property and fiber quality, it is proposed that the core-sheath-type that core component hygroscopic polymer is wrapped completely is combined The motion of fiber, but dyeing etc. hot water treatment when core component product expansion, hygroscopic polymer from destroyed sheath into Branch point dissolution, hygroscopicity disappears after there is hot water treatment.Therefore, it is proposed to last point of fiber cross section Core component exposes the motion of the sheath-core type conjugate fiber on surface, but melting when can not simultaneously suppress false twisting, hot water The rupture of sheath part and the dissolution of core component these problems during treatment, as a result, engineering still can not be obtained passing through Property it is good and with still having hygroscopic fiber after high-quality and hot water treatment.
In view of the above problems, what the present inventor was carried out is examining with keen determination as a result, meeting core component and sheath composition tool simultaneously Have a crystallinity and core component have hygroscopicity, the cross-sectional circumference of fiber R long with expose core in surface portion into The length summation r for dividingSRatio rS/ R is that the extrapolation melt initiation temperature degree of 0.05~0.40, sheath-core type conjugate fiber exists After more than 150 DEG C, above mentioned problem is able to whole solutions, and good and quality is high, hot water by property successfully to obtain engineering Still there is hygroscopic sheath-core type conjugate fiber after treatment.
The core component of sheath-core type conjugate fiber of the invention is crystalline polymer.Core component has if crystallinity, leads to When crossing method described in embodiment and determining extrapolation melt initiation temperature and spend, can observe and melt along with melting for crystallization Peak.Core component has if crystallinity, because drawing with the contact of heated roller and heater in extension and false twisting engineering Rise interfibrous melting can be suppressed, the deposit on heated roller, heater and filar guide tails off, fracture of wire with And filoplume tails off, it is good that engineering passes through property.Meanwhile, specking and hair when forming fabric and compiling the fiber body structures such as thing The generation of plumage tails off, excellent quality.Also, with crystalline occasion, the core component during hot water treatment such as dyeing The dissolution of hygroscopic polymer can be suppressed, and hygroscopicity can be kept after hot water treatment.
The core component of sheath-core type conjugate fiber of the invention is hygroscopic polymer.In the present invention, the hygroscopicity polymerization Thing is the polymer of hydroscopicity poor (Δ MR) more than 2.0%.Hydroscopicity of the present invention poor (Δ MR) refers to implement The value that method described in example is determined.Core component is combined if having hygroscopicity by with sheath composition, The excellent sheath-core type conjugate fiber of hygroscopicity can be obtained.
The core component of sheath-core type conjugate fiber of the invention, what can specifically be enumerated has polyether ester, polyetheramides, gathers Ether amide ester, polyamide, thermoplasticity cellulose derivative, polyvinylpyrrolidone etc. have hygroscopic polymer, But it is not limited to above polymer.Especially, preferably take polyethers as the polyether ester of combined polymerization composition, polyetheramides, polyethers acyl Amine ester, especially because polyether ester excellent heat resistance, the mechanical property of sheath-core type conjugate fiber for obtaining and tone are all It is relatively good thus more preferably.Above-mentioned hygroscopic polymer can be used alone one kind, it is also possible to two or more to be used in combination.Together When, the material after these hygroscopic polymers and polyester, polyamide, polyolefin are kneaded can also be used as hygroscopicity Polymer is used.
The copolymerization segregation ether of foregoing hygroscopic polymer, can specifically enumerate have polyethylene glycol, polypropylene glycol, Polytetramethylene glycol etc. is polymerized alone the combined polymerizations such as body, polyethylene glycol propane diols copolymer, polyethylene glycol butanediol Body etc., but it is not limited to above material.Especially, because polyethylene glycol, polypropylene glycol, polytetramethylene glycol are manufactured and are used When access it is good and preferred, particularly polyethylene glycol hygroscopicity it is excellent and more preferably.
Foregoing polyether ester, from from the viewpoint of heat resistance and mechanical property, with aromatic binary carboxylic acid and binary aliphatic Alcohol is predominant repeat unit, is combined polymerization composition preferably with polyethers.Aromatic binary carboxylic acid, can specifically enumerate There are terephthalic acid (TPA), M-phthalic acid, phthalic acid, 5-sodium sulfo isophthalate, M-phthalic acid -5- sulphurs Sour lithium, 5- (tetraalkyl)-M-phthalic acid sulfonic acid phosphorus compound, 4,4 '-biphenyl dicarboxylic acids, 2,6- how two Formic acid etc., but it is not limited to above material.Meanwhile, what aliphatic dihydroxy alcohol can specifically be enumerated has ethylene glycol, 1, It is ammediol, BDO, hexylene glycol, hexamethylene hexylene glycol, diethylene glycol, hexa-methylene ethylene glycol, new Pentanediol etc., but it is not limited to above material.Especially, ethylene glycol, propane diols, BDO are manufactured and used When access it is good thus preferably.From from the perspective of heat resistance and mechanical property, more preferably ethylene glycol；From crystallization From the perspective of property, more preferably BDO.
The number-average molecular weight and combined polymerization rate of the copolymerization segregation ether of foregoing polyether ester, can have knot in polyether ester Suitably selected in the range of crystalline substance, preferred scope is different according to the constituent difference of polyether ester.For example, In the case where the constituent aliphatic dihydroxy alcohol of polyether ester is for the occasion of ethylene glycol, if the combined polymerization rate of polyethers is too high, dye Polyether ester will be dissolved in the hot water during the hot water treatments such as color, and hygroscopicity is low after hot water treatment.Meanwhile, work as polyether ester Constituent aliphatic dihydroxy alcohol when being BDO, compared with the occasion of above-mentioned use ethylene glycol, due to poly- The crystallinity of compound is high, in the case that the combined polymerization rate of even polyether compound is higher, it is also possible to suppress to gather in hot water The dissolution of ether-ether.That is, when aliphatic dihydroxy alcohol uses BDO, due to polyethers can be improved Combined polymerization rate, the hygroscopicity of polyether ester, the hygroscopicity of the sheath-core type conjugate fiber for even obtaining can also be improved.
The constituent aliphatic dihydroxy alcohol of polyether ester is the occasion of ethylene glycol, the number-average molecular weight preferably 8000 of polyethers~ 30000g/mol, the combined polymerization rate preferably 10~35wt% of polyethers.The number-average molecular weight of polyethers is in more than 8000g/mol If, the hygroscopicity of polyether ester is high, and hygroscopicity excellent sheath-core type conjugate fiber can be obtained when being used as core component. Meanwhile, it is capable to suppress the crystalline decline of polyether ester and the reduction of extrapolation melt initiation temperature degree, due to extension and vacation Because interfibrous the melting that the contact with heated roller and heater causes can also be suppressed in sth. made by twisting engineering, sieve is heated Drawing, heater, the deposit on filar guide, fracture of wire and filoplume tail off, and engineering is good by property, are formed The generation of specking and filoplume tails off during the fiber body structure such as fabric and volume thing, excellent quality.The number-average molecular weight of polyethers is more It is preferred that more than 8100g/mol, most preferably more than 8300g/mol.On the other hand, the number-average molecular weight of polyethers exists If below 30000g/mol, polycondensation reaction is high, and unreacted polyethers is reduced, and can suppress the hot water treatments such as dyeing When dissolution in the hot water, the hygroscopicity after hot water treatment can be maintained.The number-average molecular weight of polyethers is preferred Below 25000g/mol, more preferably below 20000g/mol.Meanwhile, the combined polymerization rate of polyethers is in more than 10wt% If, the hygroscopicity of polyether ester is high, and hygroscopicity excellent sheath-core type conjugate fiber can be obtained when being used as core component. Combined polymerization rate more preferably more than the 15wt%, most preferably more than 20wt% of polyethers.On the other hand, the combined polymerization rate of polyethers If below 35wt%, due to extend and false twisting engineering in because contact with heated roller and heater causes Interfibrous melting can be suppressed, the hair of deposit, fracture of wire and filoplume on heated roller, heater, guide rail Change few, engineering is good by property, the generation of specking and filoplume tails off when forming fabric and compiling the fiber body structures such as thing, Excellent quality.Meanwhile, it is capable to suppress the dissolution of core component polyether ester in hot water during the hot water treatments such as dyeing, hot water treatment After be able to maintain that hygroscopicity.Combined polymerization rate more preferably below the 32wt%, most preferably below 30wt% of polyethers.
The constituent aliphatic dihydroxy alcohol of polyether ester is the occasion of BDO, and the number-average molecular weight of polyethers is preferred 2000~30000g/mol, the combined polymerization rate preferably 10~60wt% of polyethers.The number-average molecular weight of polyethers is in 2000g/mol Above, the hygroscopicity of polyether ester is high, and the excellent core-sheath-type of hygroscopicity compound fibre can be obtained when being used as core component Dimension.Meanwhile, it is capable to the crystallinity for suppressing polyether ester declines.The number-average molecular weight of polyethers more preferably 3000g/mol with On, most preferably more than 5000g/mol.Meanwhile, the number-average molecular weight of polyethers if more than 8000g/mol, energy Enough suppress the crystalline decline of polyether ester and the reduction of extrapolation melt initiation temperature degree, due to extension and false twisting engineering Interfibrous the melting that the middle contact because with heated roller and heater causes can also be suppressed, heated roller, plus Deposit, fracture of wire and filoplume on hot device, guide rail tail off, and engineering is good by property, forms fabric and volume The generation of specking and filoplume tails off during the fiber body structures such as thing, excellent quality.On the other hand, the number-average molecular weight of polyethers If below 30000g/mol, polycondensation reaction is high, and unreacted polyethers is reduced, and can suppress the hot water such as dyeing Dissolution during treatment in the hot water, the hygroscopicity after hot water treatment is able to maintain that.The number-average molecular weight of polyethers is more preferably Below 27000g/mol, most preferably below 25000g/mol, particularly preferred below 20000g/mol.Meanwhile, polyethers Combined polymerization rate if more than 10wt%, the hygroscopicity of polyether ester is high, as core component use when can obtain moisture absorption The excellent sheath-core type conjugate fiber of property.Combined polymerization rate more preferably more than the 15wt%, most preferably more than 20wt% of polyethers. On the other hand, the combined polymerization rate of polyethers is in below 60wt%, due to extend and false twisting engineering in because with heated roller And interfibrous the melting that the contact of heater causes can be suppressed, the heap on heated roller, heater, guide rail Product thing, fracture of wire and filoplume tail off, and engineering is good by property, when forming fabric and compiling the fiber body structures such as thing The generation of specking and filoplume tails off, excellent quality.Meanwhile, it is capable to suppress in the hot water molten during the hot water treatments such as dyeing Go out, the hygroscopicity after hot water treatment is able to maintain that.Combined polymerization rate more preferably below the 55wt%, most preferably 50wt% of polyethers Hereinafter, particularly preferred below 45wt%.
The sheath composition of sheath-core type conjugate fiber of the invention has crystallinity.Sheath composition has if crystallinity, by implementing Method described in example determines extrapolation melt initiation temperature when spending, and can observe and melts peak along with melting for crystallization.Sheath into Point have crystallinity if, can suppress extend and false twisting engineering in because the contact with heated roller and heater is drawn Rise it is interfibrous melt, the deposit on heated roller, heater and filar guide tails off, and fracture of wire and filoplume occur Tail off, engineering is good by property, the generation of specking and filoplume tails off when forming fabric and compiling the fiber body structures such as thing, product It is of fine quality different.Meanwhile, the dissolution of sheath composition during the hot water treatments such as dyeing can be suppressed.
The sheath composition of sheath-core type conjugate fiber of the invention, what can specifically be enumerated has polyethylene terephthalate The polyamide such as the polyester such as ester, polybutylene terephthalate (PBT), nylon 6, nylon66 fiber, polyethylene, polypropylene etc. gather Alkene, but it is not limited to above material.Especially, due to polyester has excellent mechanical property with durability and it is preferred that.Together When, sheath composition is the occasion of the hydrophobic polymers such as polyester or polyolefin, the core component hygroscopicity polymerization exposed on surface The hygroscopicity of thing, the dry sense of touch with sheath component hydrophobic polymer can and be deposited, and can obtain fibre comfortable and easy to wear Dimension tectosome.
The polyester of the sheath composition on sheath-core type conjugate fiber of the present invention, what can specifically be enumerated has poly terephthalic acid The aromatic polyesters such as glycol ester, PTT, polybutylene terephthalate (PBT), PLA, Aliphatic polyesters such as polyglycolic acid etc., but it is not limited to above material.Especially, polyethylene terephthalate, poly- Propylene glycol ester terephthalate, polybutylene terephthalate (PBT) have excellent mechanical property and durability, manufacture When and the when of use access it is good and preferred.Meanwhile, polyethylene terephthalate has polyester fiber distinctive Straightening sense and it is preferred that, polybutylene terephthalate (PBT) there is crystallinity high and it is preferred that.
The sheath composition of sheath-core type conjugate fiber of the invention, preferably cation dyeable polyester.Polyester has sulfonic group etc. If anionic site, can be interacted with the dye of positive ion with cation position, thus with cation-dyeable Property.Sheath composition is for if cation dyeable polyester, while with distinct color emissivity, mixing with polyurethane fiber makes Used time can prevent the pollution of dyestuff thus preferred.The combined polymerization composition of cation dyeable polyester specifically has 5- isophthalic diformazans Sour sulfonate, what can be enumerated has lithium salts, sodium salt, sylvite, rubidium salt, cesium salt etc., but is not limited to above material.Especially The crystallinity of its preferred lithium salts and sodium salt, particularly sodium salt is excellent thus more preferably.
Sheath-core type conjugate fiber of the invention, at least part of core component is exposed on surface on fiber cross section.With core The completely wrapped sheath-core type conjugate fiber of composition is different, because at least part of core component is exposed on fiber cross section On surface, core component hygroscopic polymer during the hot water treatments such as dyeing can be suppressed the sheath breakage after volumetric expansion occurs. Simultaneously as core component hygroscopic polymer exposes on surface, it is found that its core-sheath-type completely more wrapped than core component is answered Condensating fiber has hygroscopicity higher.
Sheath-core type conjugate fiber of the invention, fiber cross section outer perimeter R and the length for exposing the core component in surface portion Degree summation rSRatio rS/ R is 0.05~0.40.Fiber cross section outer perimeter R of the invention with expose in surface portion Core component length summation rSRatio rS/ R, refers to the value that the method recorded by embodiment is calculated.When core-sheath-type is compound The r of fiberSWhen/R is more than 0.05, find because core component hygroscopic polymer exposes on surface comparing core component The hygroscopicity of completely wrapped sheath-core type conjugate fiber is higher.Meanwhile, core component hygroscopicity during the hot water treatment such as dyeing There is volumetric expansion in polymer, can suppress sheath and be destroyed.The r of sheath-core type conjugate fiberS/ R preferably more than 0.07, More preferably more than 0.10.On the other hand, the r of sheath-core type conjugate fiberSWhen/R is below 0.40, extend and false Because interfibrous the melting that the contact with heated roller and heater causes can be suppressed in sth. made by twisting engineering, sieve is heated Drawing, heater, the deposit on filar guide, fracture of wire and filoplume tail off, and engineering is good by property, are formed The generation of specking and filoplume tails off during the fiber body structure such as fabric and volume thing, excellent quality.Meanwhile, it is capable to suppress dyeing The dissolution in the hot water of core component hygroscopic polymer, can keep hygroscopicity during etc. hot water treatment after hot water treatment.Core sheath The r of type composite fibreS/ R more preferably less than 0.35, most preferably less than 0.30.
Sheath-core type conjugate fiber of the invention, the outer perimeter R of fiber cross section with expose it is long in the core component of surface portion The maximum r of degreeMRatio rM/ R preferably 0.01~0.20.Fiber cross section outer perimeter R of the invention with expose in table The maximum r of the core component length of face partMRatio rM/ R, refers to the value that the method recorded by embodiment is calculated.Core sheath The r of type composite fibreMWhen/R is more than 0.01, find because core component hygroscopic polymer expose on surface than The hygroscopicity of the completely wrapped sheath-core type conjugate fiber of core component is higher, as preferred；Meanwhile, at the hot water such as dyeing During reason there is volumetric expansion in core component hygroscopic polymer, can suppress sheath and be destroyed, as preferred.Core-sheath-type is combined The r of fiberM/ R more preferably more than 0.03, most preferably more than 0.05.On the other hand, sheath-core type conjugate fiber rMWhen/R is below 0.20, extend and false twisting engineering in the fibre that causes by the contact with heated roller and heater Melting between dimension can be suppressed, the hair of deposit, fracture of wire and filoplume on heated roller, heater, filar guide Change few, engineering is good by property, the generation of specking and filoplume tails off when forming fabric and compiling the fiber body structures such as thing, Excellent quality.Meanwhile, it is capable to suppress core component hygroscopic polymer dissolution in the hot water during the hot water treatments such as dyeing, Hygroscopicity can be kept after hot water treatment.The r of sheath-core type conjugate fiberM/ R more preferably below 0.17, most preferably 0.15 Below.
Various auxiliary can also be added in sheath-core type conjugate fiber of the invention, core component and/or sheath composition to change Property agent.Auxiliary modifier, what can specifically be enumerated has phase solvent, plasticizer, acidifying preventing agent, ultraviolet radiation absorption Agent, infrared absorbent, fluorescent whitening agent, releasing agent, antiseptic, nucleator, heat stabilizer, acidifying preventing agent, Charged preventor, coloring preventing agent, regulator, delustering agent, defoamer, preservative, gelating agent, latex, fill out Material, ink, colouring matter, dyestuff, pigment, spices etc., but it is not limited to above-mentioned substance.Above-mentioned auxiliary additive can be with It is used alone, but also also mix together.
The extrapolation melt initiation temperature degree of sheath-core type conjugate fiber of the invention is more than 150 DEG C.Core-sheath-type of the invention is answered The extrapolation melt initiation temperature degree of condensating fiber, refers to the value that the method recorded by embodiment is calculated.Also, observe multiple Melt the occasion at peak, since temperature lowest side melt peak calculate.The extrapolation melt initiation temperature of sheath-core type conjugate fiber Degree more than 150 DEG C, the fibre caused by the contact with heated roller and heater in extension and false twisting engineering Melting between dimension can be suppressed, the hair of deposit, fracture of wire and filoplume on heated roller, heater, filar guide Change few, engineering is good by property, the generation of specking and filoplume tails off when forming fabric and compiling the fiber body structures such as thing, Excellent quality.More preferably more than 170 DEG C of the extrapolation melt initiation temperature degree of sheath-core type conjugate fiber, most preferably 190 DEG C with On, particularly preferred more than 200 DEG C.
The core component of sheath-core type conjugate fiber of the invention/sheath composition it is compound than (weight ratio) preferably 10/90~ 70/30.Being combined than (weight ratio) for the core component of sheath-core type conjugate fiber of the invention/sheath composition, refers to by implementing The value that the method that example is recorded is calculated.The compositely proportional of the core component of sheath-core type conjugate fiber can be obtained in more than 10wt% To with excellent hygroscopic sheath-core type conjugate fiber.The compound ratio of the core component of sheath-core type conjugate fiber of the invention is more It is preferred that more than 20wt%, most preferably more than 30wt%.On the other hand, the compound ratio of the core component of sheath-core type conjugate fiber exists In more than 30wt%, sheath composition can obtain well-pressed, dry sense of touch to the compound ratio of below 70wt%, i.e. sheath composition.Together When, the volumetric expansion of core component causes when rupture, the moisture absorption of sheath when can suppress to extend and during false twisting caused by external force Sheath rupture, core component hygroscopic polymer exists during the hot water treatment such as low quality, dyeing caused by the generation of filoplume Hygroscopicity declines problems caused by dissolution in hot water.The core component of sheath-core type conjugate fiber of the invention it is compound Than more preferably below 60wt%, most preferably below 50wt%.
The fiber number of the multifilament of the composite fibre of core-sheath-type of the invention, is not limited specifically, according to purposes, spy Property require can carry out appropriate selection, preferably 10~500dtex.Fiber number of the invention, is referred to and is remembered by embodiment The value that the method for load is determined.The fiber number of sheath-core type conjugate fiber is in more than 10dtex, and fracture of wire is fewer, and engineering is led to The property crossed is good, and the generation of filoplume is few when using, excellent in te pins of durability.The fiber number of sheath-core type conjugate fiber more preferably 30dtex More than, most preferably more than 50dtex.On the other hand, the fiber number of sheath-core type conjugate fiber is in below 500dtex, The flexibility of fiber and fiber body structure is not damaged.The fiber number of sheath-core type conjugate fiber more preferably below 400dtex, Most preferably below 300dtex.
The filament number of sheath-core type conjugate fiber of the invention, is not limited specifically, according to purposes, characteristic It is required that appropriate selection, preferably 0.5~4.0dtex can be carried out.Filament number of the invention, refers to according to embodiment The fiber number that described method is determined is divided by the value obtained by monofilament number.The filament number of sheath-core type conjugate fiber exists During more than 0.5dtex, fracture of wire is fewer, and engineering is good by property, and the generation of filoplume is few when using, excellent in te pins of durability. The filament number of sheath-core type conjugate fiber more preferably more than 0.6dtex, most preferably more than 0.8dtex.On the other hand, In below 4.0dtex, the flexibility of fiber and fiber body structure will not be received the filament number of sheath-core type conjugate fiber Damage.The filament number of sheath-core type conjugate fiber more preferably below 2.0dtex, most preferably below 1.5dtex.
The intensity of sheath-core type conjugate fiber of the invention, is not limited specifically, according to purposes and characteristic requirements Appropriate selection can be carried out, the requirement preferably 2.0~5.0cN/dtex according to mechanical property.Intensity of the invention, Refer to the value that the method recorded by embodiment is determined.The intensity of sheath-core type conjugate fiber in more than 2.0cN/dtex, The generation of filoplume is few when using, excellent in te pins of durability.The intensity of sheath-core type conjugate fiber more preferably more than 2.5cN/dtex, Most preferably more than 3.0cN/dtex.On the other hand, the intensity of sheath-core type conjugate fiber is in below 5.0cN/dtex, The flexibility of fiber and fiber body structure is not damaged.
The degree of stretching of sheath-core type conjugate fiber of the invention, is not limited specifically, can according to purposes and characteristic requirements To carry out appropriate selection, from the viewpoint preferably 10~60% of durability.Degree of stretching of the invention, is referred to and is remembered by embodiment The value that the method for load is determined.When the degree of stretching of sheath-core type conjugate fiber is more than 10%, fiber and fiber body structure it is wear-resisting Consumption is good, and the generation of filoplume is few when using, and durability is good.The degree of stretching of sheath-core type conjugate fiber more preferably 15% with On, most preferably more than 20%.On the other hand, when the degree of stretching of sheath-core type conjugate fiber is below 60%, fiber and fiber The dimensional stability of tectosome is good.The degree of stretching of sheath-core type conjugate fiber more preferably less than 55%, most preferably less than 50%.
Hydroscopicity poor (Δ MR) after the hot water treatment of sheath-core type conjugate fiber of the invention is 2.0~10.0%.This hair Hydroscopicity after bright hot water treatment is poor (Δ MR), refers to the value that the method recorded by embodiment is determined.Δ MR refers to, It is assumed that the hydroscopicity after slight motion in clothes when 30 DEG C of temperature, humidity 90%RH, with 20 DEG C of ambient temperature, humidity The difference of hydroscopicity during 65%RH.That is, Δ MR is hygroscopic index, Δ MR snugness of fits higher are better. Hydroscopicity of the invention poor (Δ MR) refers to the value after hot water treatment, represents still to have after the hot water treatments such as dyeing and inhales Moist is very important.It is vexed in clothes when Δ MR after sheath-core type conjugate fiber hot water treatment is more than 2.0% Thermal sensation reduction, with snugness of fit.Δ MR after sheath-core type conjugate fiber hot water treatment preferably more than 3.0%, More preferably more than 3.5%, most preferably more than 4.0%.On the other hand, after sheath-core type conjugate fiber hot water treatment When Δ MR is below 10%, engineering is good by property and access, excellent in te pins of durability when using.
Sheath-core type conjugate fiber of the invention, it is fine when at least part of core component is exposed on surface on fiber cross section Tie up the outer perimeter R of cross section and expose the length summation r in the core component of surface portionSRatio rS/ R satisfactions 0.05~ When 0.40, fiber cross-sectional shapes are not limited specifically, can be selected accordingly according to purposes and characteristic requirements. Meanwhile, the number to exposing in the core component of surface portion is not also limited specifically, for example, Fig. 1 (a)~(c) At shown 1, shown in Fig. 1 (d), (e) 2 at, shown in Fig. 1 (f), (g) 3 at, Fig. 1 (h)~ Shown in (j) 4 at have the section configuration exposed in the part on surface, but be not limited to above-mentioned enumerating.Extend from suppression And false twisting engineering the dissolution of core component hygroscopic polymer when the hot water treatment such as melting, dye and wear away when using From the point of view of durability, it is more few better in the core component part on surface to expose, it is therefore preferable that Fig. 1 (a)~(c) Shown exposing in the part of the core component on surface is the section configuration at 1.It is more specific, preferably Fig. 1 (a), (b) Sheath composition shown in shown core shift core-sheath-type, Fig. 1 (c) is the core-sheath-type section configuration of c-type.Meanwhile, Fig. 1 (j) Shown each exposes the inconsistent situation of length in the core component part on surface can also.Furthermore, Fig. 1 (k)~(m) The profile of shown section is pancake, cocoon shape, trilobal can.
Sheath-core type conjugate fiber of the invention, the form to fiber is not limited specifically, monofilament, multifilament, short fibre etc. Various forms can.
Sheath-core type conjugate fiber of the invention, can carry out false twisting and the twist thread processing same with general fiber, weaving And braiding can also use the method same with general fiber.
The form of sheath-core type conjugate fiber of the invention and/or the fiber body structure formed by false twist yarn, does not carry out spy Other limitation, according to known method, woven fabric, braid, looped pile cloth and silk, adhesive-bonded fabric, spinning, filling cotton etc. Can.Meanwhile, sheath-core type conjugate fiber of the invention and/or the fiber body structure formed by false twist yarn, Ke Yishi Any braid tissue, plain weave, twill weave, Zhu Zi are knitted or these change is knitted, warp knit, weft knitting, circle volume, lace Volume or these change volume etc. can be used.
Sheath-core type conjugate fiber of the invention, can be with other fiber combinations, it is also possible to form mixed yarn with other fibers After, fiber body structure is formed by interweaving or handing over volume,
The manufacture method of sheath-core type conjugate fiber of the invention is as follows.
The manufacture method of sheath-core type conjugate fiber of the invention, it is possible to use known melt spinning method, extension method, False twisting method for working.
Preferably be dried to below moisture content 300ppm for core component, sheath composition before melt spinning by the present invention. Moisture content if below 300ppm, the molecular weight and molecular weight that is produced by hydrolyzable when can suppress melt spinning and The foaming caused by moisture, can carry out stablizing spinning.Moisture content more preferably below 100ppm, most preferably 50ppm Below.
The present invention, in advance dried section is supplied to screw type or hot plate type melt spinning machine, core component with Sheath composition is melted, measured by measuring pump respectively.Then, it imported into the heated spinning in spinning manifold In silk component, after molten polymer is filtered in filament spinning component, by core-sheath-type composite spinning spinneret by core Composition carries out interflow and forms core sheath construction with sheath composition, spues to form fiber strand silk from spinning spinneret.From spinning spinneret The fiber strand silk that plate spues, is cooled and solidified through apparatus for supercooling, by first roller draw taking, by the 2nd Roller is batched on winder, obtains batching silk.And, in order to improve spinning behaviour industry, productivity, fiber Mechanical property, it is necessary in spinning spinneret bottom, 2~20cm cartridge heaters or heat-preservation cylinder long is set.Meanwhile, can Oil supply is carried out to fiber strand silk, it is also possible to which interlacing is carried out to fiber strand silk by interlacing device with by feeding means.
The spinning temperature of melt spinning, can be selected accordingly according to core component, the fusing point of sheath composition and heat resistance etc. Select, preferably 240~320 DEG C.Spinning temperature more than 240 DEG C, due to the fiber spued from spinning spinneret The elongation viscosity of strand is low, spues stable, and especially spinning tension will not be too high, can suppress fracture of wire.Spinning temperature More preferably more than 250 DEG C, most preferably more than 260 DEG C.On the other hand, spinning temperature is below 320 DEG C, Thermal decomposition, the reduction and coloring of fibre machinery performance during spinning can be suppressed.Spinning temperature more preferably 310 DEG C with Under, most preferably below 300 DEG C.
Spinning speed during melt spinning, composition, spinning temperature according to core component and sheath composition etc. can be carried out suitably Selection.After first carrying out melt spinning and batching, still further extended or two sections of spinning of the occasion of engineering method of false twisting Speed is preferably 500~6000m/ points.Spinning speed more than 500m/ points, stabilize, can by the operation of strand Suppress fracture of wire.More than the two sections of spinning speed of the occasion of engineering method more preferably 1000m/ points, most preferably 1500m/ points with On.On the other hand, spinning speed does not have fracture of wire below 6000m/ points by suppressing spinning tension, can carry out Stable spinning.The spinning speed of the occasion of two engineering methods more preferably 4500m/ points following, and most preferably 4000m/ points following. Meanwhile, do not batched for the time being, one section of spinning speed of the occasion of engineering method that spinning is carried out simultaneously with extension, low speed Roller preferably 500~5000m/ points, high speed roller preferably 2500~6000m/ points.Low speed roller and high speed roller are upper In the range of stating, strand traveling can suppress fracture of wire while stable, can carry out stable spinning.One section of engineering method Occasion spinning speed, more preferably 1000~4500m/ of low speed roller point, 3500~5500m/ of high speed roller point, Most preferably 1500~4000m/ of low speed roller points, 4000~5000m/ of high speed roller points.
The occasion that one section of engineering method or two sections of engineering methods are extended, one section of extension method or more than two sections of multistage extension method Can.Heating means during extension, the device of direct or indirect heating can be carried out to traveling strand, do not carried out Specific limitation.What heating means can specifically be enumerated has, heated roller, hot pin, hot plate, warm water, hot water etc. Gas bath, the laser of liquid bath, hot sky, steam etc. etc., but be not limited to above-mentioned enumerating.These heating means can To be used alone, it is also possible to carry out compound use.Heating means are from the control of heating-up temperature, to the uniform of traveling strand Heating, avoiding device complexity angularly consider, preferentially using the contact with heated roller, the contact of hot pin and heat The contact of plate, the dipping of liquid bath.
The elongating temperature of the occasion for being extended, according to core component, the extrapolation melt initiation temperature degree of the polymer of sheath composition And intensity, degree of stretching of fiber etc. can carry out appropriate selection, preferably 50~150 DEG C after extending.Elongating temperature More than 50 DEG C, the strand that supply extends can be preheated sufficiently, thermal deformation during extension is homogeneous, can press down The generation of fiber number spot processed.More preferably more than 60 DEG C, most preferably more than 70 DEG C of elongating temperature.On the other hand, temperature is extended Degree below 150 DEG C, can suppress because the contact with heated roller cause it is interfibrous melt and thermally decompose, Engineering passes through property and quality is good.Simultaneously as the fibre lubrication extended on roller is good, fracture of wire can be suppressed, carried out Stabilization extends.More preferably less than 145 DEG C, most preferably less than 140 DEG C of elongating temperature.Meanwhile, can also enter if necessary The thermal finalization that 60~150 DEG C of row.
Extension ratio during extension, intensity and degree of stretching according to fiber after the degree of stretching of fiber, extension before extending etc. can be entered The corresponding selection of row, preferably 1.02~7.0 times.Extension ratio more than 1.02 times, by extending fiber The mechanical property such as intensity and degree of stretching is improved.More preferably more than 1.2 times, most preferably more than 1.5 times of extension ratio.Separately On the one hand, below 7.0 times, fracture of wire when can suppress to extend carries out stable extension to extension ratio.Extend More preferably less than 6.0 times, most preferably less than 5.0 times of multiplying power.
Extension speed during extension, is that any one of one section of engineering method or two sections of engineering methods can according to extension method To be selected accordingly.One section of occasion of engineering method, the speed and extension speed of the high speed roller of above-mentioned spinning speed Quite.The extension speed of the occasion that two sections of engineering methods are extended is preferably 30~1000m/ points.Extension speed is in 30m/ More than point, traveling strand is stabilized, and can suppress fracture of wire.The extension speed of two sections of occasions of engineering method extension is more excellent Select more than 50m/ points, more than most preferably 100m/ points.On the other hand, extension speed is if below 1000m/ point, Fracture of wire when can suppress to extend, carries out stable extension.The extension speed of the occasion that two sections of engineering methods are extended is more excellent Elect less than 900m/ points as, most preferably 800m/ points following.
The occasion of false twisting processing is carried out, in addition to selection is so-called high-elastic processing only with 1 section of heater, can be with Selection is that so-called low bullet is processed using 1 section of heater and 2 sections of heaters.The heating means of heater can be used and connect Touch is contactless.What false twist processing machine can specifically be enumerated has, friction magnetic disc type, belt pulley type, safety pin type Deng, but it is not limited to above-mentioned enumerating.
The temperature of the heater of the occasion that false twisting processing is carried out, the extrapolation according to core component, sheath component polymer is melted Beginning temperature can be selected accordingly, preferably 120~210 DEG C.Heter temperature is right more than 120 DEG C The strand of supply false twisting processing can be preheated fully, homogeneous along with the thermal deformation for extending, and can suppress fiber number spot Occur.The temperature of heater is more preferably more than 140 DEG C, most preferably more than 160 DEG C.On the other hand, heater Temperature below 210 DEG C, due to can suppress because the contact with heater cause it is interfibrous melt and Thermal decomposition, fracture of wire and the pollution to heater are reduced, and engineering is by property and quality is good.The temperature of heater is more excellent Select less than 200 DEG C, most preferably less than 190 DEG C.
The extension ratio of the occasion of false twisting processing is carried out, it is fine after the degree of stretching, false twisting processing according to the fiber before false twisting processing The intensity of dimension and degree of stretching etc. can carry out appropriate selection, preferably 1.01~2.5 times.Extension ratio is 1.01 times More than if, improved by the mechanical property such as intensity and degree of stretching for extending fiber.More preferably more than 1.2 times of extension ratio, Most preferably more than 1.5 times.On the other hand, extension ratio can suppress when false twisting is processed below 2.5 times Fracture of wire, can carry out stable false twisting processing.More preferably less than 2.2 times, most preferably less than 2.0 times of extension ratio.
The process velocity of the occasion of false twisting processing is carried out, appropriate selection, preferably 200~1000m/ points can be carried out. Process velocity more than 200m/ points, stabilize, and can suppress fracture of wire by strand traveling.Process velocity more preferably 300m/ More than point, more than most preferably 400m/ points.On the other hand, process velocity can suppress below 1000m/ points Fracture of wire when false twisting is processed, can carry out stable false twisting processing.Process velocity more preferably 900m/ points following, optimal Select less than 800m/ points.
In the present invention, if necessary, can to fiber or fiber body structure any state when dye.In the present invention, Dyestuff preferentially uses disperse dyes.
Colouring method of the invention, is not limited particularly, according to known method, can be contaminated using liquid stream, Drum-type dye, axle dye and dye gigging etc..
In the present invention, concentration and dyeing temperature to fuel be not particularly limited to, can be using known method.Meanwhile, If necessary, can be refined before dyeing process, it is also possible to reduction is carried out after dyeing process and is cleaned.
Core-sheath-type composite spun fiber of the invention and the false twist yarn formed by it, the hygroscopicity of fiber body structure are excellent. Therefore, it can the purposes for requiring comfortableness and quality.For example, general dress material purposes, motion dress material purposes, bedroom Tool purposes, interior decoration purposes, goods, materials and equipments purposes etc., but it is not limited to above-mentioned enumerating.
Below, the present invention is explained by embodiment.Meanwhile, each characteristic value in embodiment by with Under method test.
A. core component, sheath composition hydroscopicity it is poor (Δ MR)
Using the polymer of core component or sheath composition as sample, the first heated-air drying after 30 minutes at 60 DEG C, in temperature 20 DEG C, stand 24 hours in the ESPEC societies constant temperature and humidity machines LHU-123 of humidity 65%RH, determine polymer Weight (W1)；Then 24 hours are stood in 30 DEG C of temperature, the constant temperature and humidity machine of humidity 90%RH, determines polymer Weight be (W2).Then, heated-air drying 2 hours at 105 DEG C, it is (W3) to determine the polymer weight after over dry. Under weight W1, W3 according to lower note formula polymer is calculated from absolute dry condition to 20 DEG C, humidity 65%RH atmosphere Hydroscopicity MR1 (%) after standing 24 hours, weight W2, W3 according to lower note formula polymer calculates over dry Hydroscopicity MR2 (%) of the state to after standing 24 hours under 30 DEG C, humidity 90%RH atmosphere, it is then public according to lower note It is poor (Δ MR) that formula calculates hydroscopicity.Also, 1 sample determination 5 times, it is poor (Δ MR) as hydroscopicity to average.
MR1 (%)={ (W1-W3)/W3 } × 100,
MR2 (%)={ (W2-W3)/W3 } × 100,
Hydroscopicity poor (Δ MR) (%)=MR2-MR1.
B. extrapolate melt initiation temperature degree
Coring composition, the polymer of sheath composition and the fiber obtained by embodiment are used as sample, using TA Q2000 types differential scanning calorimeter (DSC) of Instruments societies, determine extrapolation melt initiation temperature degree.First, The sample of 5mg is warming up to 280 DEG C with 50 DEG C/minute of programming rate from 0 DEG C under nitrogen atmosphere, in 280 DEG C of shape Keep eliminating thermal history in 5 minutes under state.Then, from 280 DEG C of quenchings to 0 DEG C, again with 3 DEG C/minute of speed from 0 DEG C 280 DEG C are warming up to, it is ± 1 DEG C that temperature becomes modulation, temperature is heated up after 60 seconds cycles of modified tone, carries out TMDSC Measure.According to JISK7121：The standard of 1987 (assay methods of the transition temperature of plastics) 9.1, according to the 2nd The peak that melts observed during temperature of ging up calculates extrapolation melt initiation temperature degree.1 sample determination 3 times, its average value As extrapolation melt initiation temperature degree.Also, multiple occasions for melting peak are observed, the peak that melts according to lowest temperature side is calculated Go out to extrapolate melt initiation temperature degree.
C. core/sheath compositely proportional
By the weight and the weight of sheath composition of the core component as sheath-core type conjugate fiber raw material, calculate core/sheath and be combined Than (weight ratio).
D. fracture of wire
False twisting condition according to described in each embodiment, the number of times of fracture of wire is counted during being processed to 10 hours, is made For fracture of wire returns number.
E. deposit
False twisting condition according to described in each embodiment, extends heater, the cooling of false twisting machine after being processed to 10 hours Plate, friction disk, filar guide are observed, and [deposit does not have substantially] is calculated as ◎, and [deposit has a little] is calculated as zero, [deposit is more] are calculated as △, and [deposit is very more] be calculated as ×, zero is qualified with ◎.
F. fiber number
In the environment of 20 DEG C of temperature, humidity 65%RH, with the electronic dipping machine of INTEC, obtained by Example Fiber 100m.Weight obtained by determining, fiber number (dtex) is calculated with lower note formula.Also, 1 sample is surveyed It is fixed 5 times, average as fiber number.
Weight (g) × 100 of fiber number (dtex)=fiber 100m.
G. intensity, degree of stretching
Intensity and degree of stretching refer to that the fiber obtained by embodiment is used as test portion, by JIS L1013：2010 (change Learn fiber filament test method) 8.5.1 benchmark calculate.In the environment of 20 DEG C of temperature, humidity 65%RH, Orientec is used The テ Application シ ロ Application UTM-III-100 type instruments of society, initial stage test portion 20cm, draw Zhang Sudu 20cm/ points of condition Under draw an experiment.The stress (cN) of shown point calculates intensity divided by fiber number (dtex) during maximum loading (cN/dtex), calculated by lower note formula with initial stage test portion (L0) long with the elongation (L1) put shown in maximum loading Degree of stretching (%).Also, sample test 10 times, its average value is used as intensity and degree of stretching.
Degree of stretching (%)={ (L1-L0)/L0 } × 100.
H. fiber cross section outer perimeter R, expose the maximum r of core component length in surface portionM, expose on surface The length summation r of partial core componentS、rM/R、rS/R
Fiber obtained by embodiment is embedded with epoxy resin, with the FC4E types Cryo of Reichert societies Sectioning system are freezed, (recessed in the Reichert-Nissei ultracut N for possessing masonry pocket knife Highlight micro mirror) under with being cut.Then, cutting surface is that fiber cross section plates gas under platinum-Polarium, S-4000 types electron microscope (SEM) manufactured using Hitachi are observed under 1000 times, shoot fiber transversal The microphotograph in face.It is random from the photo for obtaining to take out 30, with image processing software (three paddy business systems WINROOF all of fiber cross section outer perimeter and all of length for exposing the core component in surface portion) are determined After degree, take 30 and calculate average value, respectively fiber cross section outer perimeter R, expose core component in surface portion Maximum length rM, expose length summation r in the core component of surface portionS。
Also, on each fiber cross section, it is the occasion at 1, the length of this part to expose in the core component part on surface Degree is the maximum r for exposing the core component length in surface portionMAnd expose the length of core component in surface portion Degree summation rS.On the other hand, on the cross section of each fiber, calculate to expose has more than at 2 in the core component part on surface Occasion, expose on each fiber cross section the core component length of surface portion maximum and expose in surface portion Core component length summation after, take 30 calculation average values, as expose surface portion core component length most Big value rM, and expose the length summation r in the core component of surface portionS。
rM/R、rS/ R, is by the lower outer perimeter R for remembering the above-mentioned fiber cross section for calculating of formula, exposes in surface element The maximum r of the core component length dividedM, expose length summation r in the core component of surface portionSCalculate.
The fiber cross section outer perimeter R and maximum r for exposing the core component length in surface portionMRatio rM/ R=rM/ R,
Cross-sectional circumference R long with expose the length summation r in the core component of surface portionSRatio rS/ R=rS/R。
I. refine after, the hydroscopicity after hot water treatment it is poor (Δ MR)
The fiber that Example is obtained compiles machine NCR-BL (3 inch half of kettle footpaths as sample with the rounding of English light industry (8.9cm), 27 pins) make 2g cylinder compile thing after, in V Soda 1g/L, contain solar corona chemistry interfacial agent processed In the BK-80 aqueous solution, after being refined 20 minutes under the conditions of 80 DEG C, 60 points are dried in air drier under the conditions of 60 DEG C Clock, the cylinder after being refined compiles thing.Meanwhile, by after refining cylinder compile thing bath raio 1: 100,130 DEG C for the treatment of temperature, After process time carries out hot water treatment under conditions of 60 minutes, 60 are dried in air drier under conditions of 60 DEG C After minute, obtain the cylinder after hot water treatment and compile thing.
Hydroscopicity (%) is to compile thing with the cylinder after refining and after hot water treatment, with JIS L1096：2010 (fabric and The embryo cloth test method of braid) 8.10 moisture rate on the basis of calculate.First, the heated-air drying 30 at 60 DEG C After minute, the standing 24 hours in 20 DEG C of temperature, the ESPEC societies constant temperature and humidity machines LHU-123 of humidity 65%RH, Determine the weight (W1) that cylinder compiles thing；Then 24 hours are stood in 30 DEG C of temperature, the constant temperature and humidity machine of humidity 90%RH, The weight for determining cylinder volume thing is (W2).Then, heated-air drying 2 hours at 105 DEG C, determine the cylinder after over dry and compile thing Weight is (W3).Weight W1, W3 according to lower note formula polymer is calculated from absolute dry condition to 20 DEG C, humidity Hydroscopicity MR1 (%) after being stood 24 hours under 65%RH atmosphere, weight W2, W3 of thing is compiled according to lower note formula with cylinder Hydroscopicity MR2 (%) of the absolute dry condition to after standing 24 hours under 30 DEG C, humidity 90%RH atmosphere is calculated, then Hydroscopicity is calculated according to lower note formula poor (Δ MR).Also, 1 sample determination 5 times, averages as hydroscopicity Difference (Δ MR).
MR1 (%)={ (W1-W3)/W3 } × 100,
MR2 (%)={ (W2-W3)/W3 } × 100,
Hydroscopicity poor (Δ MR) (%)=MR2-MR1.
J. melt
Cylinder after the hot water treatment that above-mentioned I is obtained compiles thing and plating gas, society of Hitachi Walkthrough type is carried out with platinum-Polarium Electron microscope (SEM) S-4000 types are observed under conditions of 1000 times, and the microscope in 5 visuals field of random shooting shines Piece.In the 5 pieces of photos for obtaining, total conduct at the position melted is melted.
K. sheath rupture
Cylinder after the hot water treatment that above-mentioned I is obtained compiles thing and plating gas, society of Hitachi Walkthrough type is carried out with platinum-Polarium Electron microscope (SEM) S-4000 types are observed under conditions of 1000 times, and the microscope in 5 visuals field of random shooting shines Piece.In the 5 pieces of photos for obtaining, the position of sheath rupture it is total as sheath rent.
L. equalization
The method same with above-mentioned I is obtained the cylinder after refining and compiles thing, thermal finalization 2 minutes under the conditions of 160 DEG C, to dry Cylinder after thermal finalization compiles thing, is being added with the disperse dyes Kayalon Polyester Blue of 1.3wt% Japan chemical drug During UT-YA, adjustment pH value are 5.0 dyeing liquor, 130 DEG C of bath raio 1: 100, dyeing temperature, dyeing time 60 Dyeed under conditions of minute.Meanwhile, sheath composition is the occasion of cation dyeable polyester, is being added with 1.0wt% During dye of positive ion Kayacrtyl Blue 2RL-ED prepared by Japanese chemical drug, adjustment pH value are 4.0 dyeing liquor, Bath raio is 130 DEG C of 1: 100, dyeing temperature, dyeing time to be dyeed under conditions of 60 minutes.
Cylinder after dyeing compiles thing, has the panel discussion of the detection person of quality judging experience in more than 5 years by 5, and [dyeing is non- Chang Junyi, completely without specking] when be judged to ◎, [dyeing is substantially uniform, there is no specking] is judged to zero, [no Can say that complete and homogeneous are dyeed, somewhat light specking] it is judged to △, [without homogeneous dyeing, there is obvious specking] Be judged to ×, zero be judged to the occasion of ◎ it is qualified.
M. quality
Cylinder after the obtained dyeing of above-mentioned L compiles thing, has the conjunction of the detection person of quality judging experience in more than 5 years by 5 View, ◎ is judged to when [completely extremely excellent without filoplume, quality], and [substantially without filoplume, excellent quality] is judged to zero, [having filoplume, low quality] is judged to △, [have many filoplumes, quality extremely low] be judged to ×, zero with the field of ◎ Conjunction is judged to qualified.
Embodiment 1
The polyethylene glycol (Sanyo chemical conversion industry PEG6000S) of 30wt% number-average molecular weights 8300g/mol with combined polymerization Polyethylene terephthalate as core component, using polyethylene terephthalate (IV=0.66) as sheath Composition, respectively under the conditions of 150 DEG C after vacuum drying 12 hours, is matched somebody with somebody by core component 20wt%, sheath composition 80wt% Than being melted respectively to being supplied in screw type composite spinning machine, under being 36g/ points in 285 DEG C of spinning temperature, discharge-amount From the compound spinning spinneret (hole count of core-sheath-type：36th, section configuration：Fig. 1 (a)) spue, spin strand.Spin The strand for going out is cooled down under 20 DEG C of wind-warm syndrome, wind speed 20m/ points of cold wind, and carrying out oil supply by feeding means collects, 1st section of roller of 2500m/ points of revolution is stretched, by the 2nd section of sieve of the speed of gyration same with first paragraph roller Drawing is batched, and obtain 144dtex-36f does not extend silk.Then, using extension false twisting machine (twisting portion：Friction disk Formula, heater portion：Contact), do not extend silk in 170 DEG C of heter temperature, the condition of 1.7 times of multiplying power by what is obtained Under carry out extension false twisting, obtain the false twist yarn of 84dtex-36f.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 1 by the evaluation result of property.False twisting When fracture of wire return number be 0 time, the deposit on false twisting post-heater and guide rail does not almost find, engineering by property extremely Well.Meanwhile, hygroscopicity is not reduced substantially after hot water treatment, and hygroscopicity is also good after hot water treatment.Also, it is fine Melting between dimension does not find that although sheath has fraction of rupture, but equalization, quality all reach qualified level.
Embodiment 2~5
Core/sheath compositely proportional is pressed beyond change shown in table 1, and remaining method similarly to Example 1 is obtained false twist yarn.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 1 by the evaluation result of property.Core into Divide the occasion changed with the compositely proportional of sheath composition, engineering is good by property and cloth and silk characteristic.
Embodiment 6~10
Beyond section configuration table 1 Suo Shi by being changed, remaining method similarly to Example 1 is obtained false twist yarn.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 1 by the evaluation result of property.Section The occasion of shape change, engineering is good by property, cloth and silk characteristic.
Embodiment 11,12
The spinneret hole count of embodiment 11 is the discharge-amount of 72, embodiment 12 for 28g/ points, the hole count of spinneret are changed into Beyond 72, remaining method similarly to Example 1 is obtained false twist yarn.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 1 by the evaluation result of property.Fiber number In the case of diminishing with filament number, it is also good with cloth and silk characteristic that engineering passes through property.
Embodiment 13~19, comparative example 1~5
The number-average molecular weight of the copolymerization segregation ethylene glycol of core component, combined polymerization rate and core/sheath compositely proportional such as table 2 Shown, comparative example 3 is changed into addition to 150 DEG C except extending the heter temperature of false twisting machine, and remaining is similarly to Example 1 Method be obtained false twist yarn.
The evaluation result that fiber properties, cloth and silk characteristic and the engineering of fiber are obtained by property is as shown in table 2.Embodiment 13~19, the occasion of the number-average molecular weight, combined polymerization rate and core/sheath compositely proportional change of polyethylene glycol, engineering is led to The property crossed, the characteristic of cloth and silk are good.Hygroscopicity after comparative example 1 is refined is reduced, the result is that the suction after hot water treatment It is moist also extremely poor.Although the hygroscopicity after comparative example 2 is refined is higher, hygroscopicity significantly declines after hot water treatment, Hygroscopicity is low after hot water treatment, and engineering is bad by property, and equalization and quality are all not up to qualified level.Compare The extrapolation melt initiation temperature degree of the core component of example 3 is low, meanwhile, do not detect the extrapolation melting starting of the core component of comparative example 4 Temperature, because not having crystallinity, fracture of wire and deposit are extremely more, and engineering is extremely bad by property.Meanwhile, find There are many places to melt to be ruptured with sheath, equalization and quality are all not up to qualified level.Also, observation is melted and sheath rupture Microphotograph, it is found that core component hygroscopic polymer has dissolution, core component hygroscopic polymer dissolution after hot water treatment Hygroscopicity declines to a great extent after causing hot water treatment, and hygroscopicity is extremely low after hot water treatment.Comparative example 5 is same with comparative example 2 Sample, although hygroscopicity is high after refining, hygroscopicity is greatly lowered after hot water treatment, and hygroscopicity is low after hot water treatment, and And engineering is all not up to qualified level by the bad, equalization of property and quality.
Embodiment 20~28, comparative example 6~8
Polybutylene terephthalate obtained by the number-average molecular weight of polyethylene glycol, the combined polymerization as shown in table 3 of combined polymerization rate As core component, polybutylene terephthalate (PBT) (IV=0.66) as sheath composition, spinning temperature is 255 DEG C to ester, As shown in table 3, embodiment 22, comparative example 7,8 become core/sheath compositely proportional except extending the heter temperature of false twisting machine More 150 DEG C in addition, and remaining is obtained false twist yarn by the same method of embodiment 7.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 3 by the evaluation result of property.Implement In example 20~28, the occasion of polyethylene glycol number-average molecular weight, combined polymerization rate and core/sheath compositely proportional change, engineering It is good by property and cloth and silk characteristic.Hygroscopicity after comparative example 6 is refined is low, the result is that the moisture absorption after hot water treatment Property is also extremely poor.Although the hygroscopicity after comparative example 7 is refined is high, the hygroscopicity after hot water treatment is greatly lowered, heat Hygroscopicity after water process is low, and engineering is bad by property, and equalization and quality are all not up to qualified level.By Low in the extrapolation melt initiation temperature degree of the core component of comparative example 8, fracture of wire and deposit are very more, and engineering passes through property also extremely It is bad.Also, the hygroscopicity after refining is low, the result is that the hygroscopicity after hot water treatment is extremely poor.
Embodiment 29~31
Core component is polyethylene glycol (Sanyo's chemical conversion industry system of number-average molecular weight 3400g/mol in embodiment 29,30 PE64000S the nylon 6 that) combined polymerization is obtained, embodiment 31 except ARKEMA systems " PEBAX MH1657 " change with Outward, remaining is obtained false twist yarn by the same method of embodiment 1.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 4 by the evaluation result of property.Core into Divide the occasion for being changed into polyetheramides, engineering is good by property and cloth and silk characteristic.
Embodiment 32
Core component is eastern beautiful system " PAS-40N ", except the heter temperature for extending false twisting machine is changed in addition to 150 DEG C, Remaining is obtained false twist yarn by the same method of embodiment 1.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 4 by the evaluation result of property.Core into Divide the occasion for being changed into polyether ester amides, engineering is good by property and cloth and silk characteristic.
Embodiment 33
Except sheath composition is the combined polymerization equal molecule of the number of 5-sodium sulfo isophthalate and 1.0wt% of 1.5mol% The polyethylene terephthalate of amount 1000g/mol polyethylene glycol (Sanyo chemical conversion industry PEG1000) (IV=0.66) beyond, remaining is obtained false twist yarn by the same method of embodiment 1.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 4 by the evaluation result of property.Sheath into Divide using the occasion of cation dyeable polyester, engineering is good by property and cloth and silk characteristic.
Comparative example 9
In addition to section configuration is changed to as shown in Figure 2, remaining is obtained false twist yarn by the same method of embodiment 1.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 4 by the evaluation result of property.Without disconnected Silk, does not almost find deposit, and engineering is good by property.But, although do not melt, due to core component hygroscopicity Polymer, with the volumetric expansion of hygroscopic polymer during hot water treatment, finds many places sheath portion completely by sheath ingredients Divide rupture.As a result, equalization and quality are all not up to qualified level.
Comparative example 10,11
Embodiment 2,4 with reference to described in Unexamined Patent 6-200473 publications, core component is combined polymerization in comparative example 10 The polyethylene terephthalate of the polyethylene glycol of 17wt% mean molecule quantities 3000g/mol, sheath composition is poly- right PET (IV=0.66)；Core component is combined polymerization 17wt% mean molecule quantities in comparative example 11 The polyethylene terephthalate of the polyethylene glycol of 3000g/mol, sheath composition is nylon 6, except the compound ratio of core/sheath Beyond such as shown in table 4 change, false twist yarn is obtained by the same method of embodiment 7.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 4 by the evaluation result of property.Compare Example 10,11 fracture of wires and deposit are more, and it is bad that engineering passes through property.Meanwhile, discovery melt and sheath rupture, equalization and Quality does not all reach qualified level.Also, the microphotograph ruptured with sheath is melted in observation, core component hygroscopicity is found Polymer has dissolution, under the dissolution of core component hygroscopic polymer causes after hot water treatment hygroscopicity significantly after hot water treatment Drop, hygroscopicity is low after hot water treatment.
Comparative example 12
Embodiment 1 with reference to described in Unexamined Patent 9-13257 publications, core component is combined polymerization 3.5mol% isophthalic The polyethylene terephthalate (IV=0.66) of dioctyl phthalate -5- sulfonate sodiums, sheath composition is that combined polymerization 8wt% puts down The nylon 6 of average molecular weight 20000g/mol polyethylene glycol, in addition to core/sheath compositely proportional as shown in table 4 change, False twist yarn is obtained by the same method of embodiment 1.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 4 by the evaluation result of property.Due to Sheath composition is hygroscopic polymer, exposes many in the hygroscopic polymer part on surface, and fracture of wire and deposit are a lot, work It is bad that journey passes through property.Meanwhile, discovery is melted and sheath rupture, and equalization and quality all do not reach qualified level.Also, Hygroscopicity is low after hot water treatment.
Comparative example 13
Embodiment 1 with reference to described in JP 2007-131980 publications, core component is that combined polymerization 30wt% is average The polyethylene terephthalate of molecular weight 5000g/mol polyethylene glycol, between sheath composition is combined polymerization 1.5mol% The poly terephthalic acid second two of phthalic acid -5- sulfonate sodiums and 1.0wt% weight average molecular weight 1000g/mol polyethylene glycol Alcohol ester (IV=0.66), in addition to core/sheath compositely proportional as shown in table 4 change, by the same method of embodiment 7 False twist yarn is obtained.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 4 by the evaluation result of property.Fracture of wire And deposit is more, it is bad that engineering passes through property.Meanwhile, discovery is melted and sheath rupture, and equalization and quality all do not reach Qualified level.Also, the microphotograph ruptured with sheath is melted in observation, finding the hygroscopic polymer of core component has molten Go out, hygroscopicity significantly declines after the dissolution of core component hygroscopic polymer causes hot water treatment after hot water treatment, at hot water Hygroscopicity is low after reason.
Comparative example 14
Except core component is polyethylene terephthalate (IV=0.66), between sheath composition is combined polymerization 1.5mol% Polyethylene glycol (Sanyo's chemical conversion industry system of phthalic acid -5- sulfonate sodiums, 1.0wt% number-average molecular weights 1000g/mol PEG1000 polyethylene terephthalate (IV=0.66)) has been made beyond change, and remaining is same by embodiment 1 Method be obtained false twist yarn.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 4 by the evaluation result of property.No Fracture of wire, there is no discovery deposit, and it is good that engineering passes through property.Meanwhile, do not melt and sheath rupture, dyeing yet Property and quality are good, and because core component and sheath composition are not hygroscopic polymers, hygroscopicity is extremely poor.
Comparative example 15,16
Except the r of fiber cross sectionM/R、rSSpinning spinneret/R as shown in table 4 has been made beyond change, and remaining is by real Apply the same method of example 7 and false twist yarn is obtained.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 4 by the evaluation result of property.Compare Example 15 does not also find deposit without fracture of wire, and engineering is good by property.Although the hygroscopicity after hot water treatment is good It is good, rM/R、rS/ R is also small, but due to core component hygroscopic polymer expose it is few in surface portion, with core component Volumetric expansion find that many places sheath portion point there occurs rupture, equalization and quality all not up to qualified levels.Comparative example 16 Middle rM/R、rS/ R is big, because core component hygroscopic polymer exposes many in the part on surface, causes fracture of wire and accumulation Thing all compares many.Simultaneously, although the hygroscopicity after hot water treatment is good, but the position melted is very more, equalization Qualified level is all not up to quality.
Comparative example 17
In addition to core sheath compositely proportional is changed as shown in table 4, remaining is obtained vacation by the same method of embodiment 1 Twisted filament.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 4 by the evaluation result of property.No Fracture of wire, basic not find deposit, engineering is good by property.Simultaneously as core component hygroscopic polymer is compound Ratio is low, and the hygroscopicity after hot water treatment is low.Also, rM/R、rS/ R is small, because hygroscopic polymer exposes in table Face part is few, and as the volumetric expansion of core component finds there is sheath partial rupture, equalization and quality are all not up to qualified water It is flat.
Comparative example 18
Except using single composition spinning spinneret (hole count：36th, circular hole) beyond, remaining is same by embodiment 1 Method is obtained false twist yarn.
The fiber properties of the fiber for obtaining, cloth and silk characteristic and engineering are as shown in table 4 by the evaluation result of property.Due to The fiber that simply hygroscopic polymer is formed, fracture of wire and deposit are very more, and engineering is bad by property.Hot water treatment Although hygroscopicity afterwards is very high, it is found that many places are melted, equalization and quality are all not up to qualified level.

Claims (13)

1. a kind of sheath-core type conjugate fiber, it is characterised in that：The core of the sheath-core type conjugate fiber into Divide and sheath composition is crystalline polymer, and core component is hygroscopic polymer；The core-sheath-type is answered At least part of core component is exposed on surface on the cross section of condensating fiber, and cross-sectional circumference R long With expose the length summation r in the core component of surface portionSRatio rS/ R is 0.05~0.40；It is described The extrapolation melt initiation temperature degree of sheath-core type conjugate fiber is more than 150 DEG C, and the moisture absorption after hot water treatment Rate difference Δ MR is 2.0~10.0%.
2. sheath-core type conjugate fiber according to claim 1, it is characterised in that：The core sheath The cross-sectional circumference R long of type composite fibre and the maximum for exposing the core component length in surface portion rMRatio rM/ R is 0.01~0.20.
3. sheath-core type conjugate fiber according to claim 1 and 2, it is characterised in that：It is described Core component is 10/90~70/30 with the weight ratio of sheath composition.
4. the sheath-core type conjugate fiber according to any one of claims 1 to 3, it is characterised in that： The hygroscopic polymer of the core component be polyether ester with polyethers as combined polymerization composition, polyetheramides, At least one in polyetheramides ester.
5. sheath-core type conjugate fiber according to claim 4, it is characterised in that：The polyethers It is at least one in polyethylene glycol, polypropylene glycol, polytetramethylene glycol.
6. the sheath-core type conjugate fiber according to claim 4 or 5, it is characterised in that：It is described With aromatic binary carboxylic acid and aliphatic dihydroxy alcohol as main composition, polyethers is combined polymerization to polyether ester Composition.
7. sheath-core type conjugate fiber according to claim 6, it is characterised in that：The fat Race's dihydroxylic alcohols is ethylene glycol, and the number-average molecular weight of the polyethers is 8000~30000g/mol.
8. sheath-core type conjugate fiber according to claim 7, it is characterised in that：Polyethers is total to Aggregate rate is 10~35wt%.
9. sheath-core type conjugate fiber according to claim 6, it is characterised in that：The fat Race's dihydroxylic alcohols is BDO, and the number-average molecular weight of the polyethers is 2000~30000g/mol.
10. sheath-core type conjugate fiber according to claim 9, it is characterised in that：Polyethers is total to Aggregate rate is 10~60wt%.
11. sheath-core type conjugate fiber according to any one of claim 1~10, it is characterised in that： The sheath composition is cation dyeable polyester.
12. sheath-core type conjugate fibers as described in any one of claim 1~11 of more than 2 are closed twists with the fingers shape Into false twist yarn.
Sheath-core type conjugate fiber described in a kind of 13. 1~11 any one of at least a portion usage right requirement And/or the fiber body structure of false twist yarn described in claim 12.
CN201511035704.3A 2015-12-28 2015-12-28 A kind of hygroscopicity sheath-core type conjugate fiber, false twist yarn and fiber body structure Pending CN106917160A (en)

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* Cited by examiner, † Cited by third party
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CN110894622A (en) * 2019-11-06 2020-03-20 青岛大学 Orange-petal-shaped structure-like composite fiber with controllable bonding strength and preparation process thereof
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CN111218728A (en) * 2018-11-26 2020-06-02 本田技研工业株式会社 Core-sheath composite fiber and method for producing core-sheath composite fiber
CN111534889A (en) * 2020-06-24 2020-08-14 江苏微笑新材料科技有限公司 Antistatic and moisture-absorbing dyeable sheath-core composite fiber and preparation method thereof
US20210325325A1 (en) * 2018-08-31 2021-10-21 Bursa Teknik Universitesi A quantitative analysis method for fiber compositions

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* Cited by examiner, † Cited by third party
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JP2020033681A (en) * 2018-03-13 2020-03-05 東レ株式会社 Sea-island type composite fiber, fiber structure and polyester composition excellent in hygroscopicity
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Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3144092B2 (en) * 1992-10-26 2001-03-07 東レ株式会社 Core-sheath type composite fiber with excellent hygroscopicity
JPH06200473A (en) 1993-01-06 1994-07-19 Kanebo Ltd Synthetic fiber structure excellent in hygroscopicity
JP3297492B2 (en) * 1993-04-23 2002-07-02 旭化成株式会社 Sheath-core type composite fiber
JPH0913257A (en) 1995-06-29 1997-01-14 Teijin Ltd Fiber structure having dry touch feeling
JP2000239918A (en) * 1999-02-22 2000-09-05 Toray Ind Inc Flat core-sheath conjugate fiber excellent in hygroscopic property
JP2001172374A (en) 2000-10-16 2001-06-26 Toray Ind Inc Copolyester excellent in moisture absorption
JP2006104379A (en) 2004-10-07 2006-04-20 Teijin Fibers Ltd Polyester composition, its preparation method and polyester molded product and hygroscopic polyester fiber made of the same
JP2007131980A (en) 2005-11-11 2007-05-31 Toray Ind Inc Polyester sheath-core conjugated fiber and fiber fabric thereof
WO2008123586A1 (en) * 2007-04-04 2008-10-16 Kb Seiren, Ltd. Conjugated fiber excellent in antistatic property, moisture absorption and cool touch feeling
CN103572399B (en) * 2012-07-25 2016-06-08 东丽纤维研究所（中国）有限公司 A kind of core-sheath compound fibre and production method thereof
JP6310064B2 (en) * 2014-04-18 2018-04-11 Ｋｂセーレン株式会社 Composite fiber, false twisted yarn comprising the same, method for producing the same, and fabric

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210325325A1 (en) * 2018-08-31 2021-10-21 Bursa Teknik Universitesi A quantitative analysis method for fiber compositions
US11988623B2 (en) * 2018-08-31 2024-05-21 Bursa Teknik Universitesi Quantitative analysis method for fiber compositions
CN111218728A (en) * 2018-11-26 2020-06-02 本田技研工业株式会社 Core-sheath composite fiber and method for producing core-sheath composite fiber
CN110894622A (en) * 2019-11-06 2020-03-20 青岛大学 Orange-petal-shaped structure-like composite fiber with controllable bonding strength and preparation process thereof
CN110894622B (en) * 2019-11-06 2022-01-28 青岛大学 Orange-petal-shaped structure-like composite fiber with controllable bonding strength and preparation process thereof
CN111101270A (en) * 2019-12-29 2020-05-05 江苏恒力化纤股份有限公司 Preparation method of antibacterial sports knitted fabric
CN111101270B (en) * 2019-12-29 2021-08-13 江苏恒力化纤股份有限公司 Preparation method of antibacterial sports knitted fabric
CN111534889A (en) * 2020-06-24 2020-08-14 江苏微笑新材料科技有限公司 Antistatic and moisture-absorbing dyeable sheath-core composite fiber and preparation method thereof

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