JP2002069795A - Woven or knit fabric having light weight and high water- absorption and method for producing the fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a woven or knit fabric having good feeling, light weight and high water absorption. SOLUTION: A honeycomb weave made of a multifilament composed of an ethylene-vinyl alcohol copolymer fiber and a polyester fiber having a single fiber fineness of <=1.1 dtex is crosslinked with acetal in an aqueous solution containing a specific amount of bisethylene dioxynonane under acidic condition of pH 1.0-5.0 at 100-140 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a woven or knitted fabric which is lightweight and has functional properties such as moisture absorption and high water absorption, and a method for producing the same.

[0002]

2. Description of the Related Art In general clothing, heavy clothing with a thick cloth feels heavy when worn, and particularly when used in the field of sports, it is difficult to be active in intense exercise and is often unpleasant. Demand for lightweight materials is increasing. On the other hand, synthetic fibers such as polyester and polyamide used for these garments are widely used not only for garments but also for industrial use due to their excellent physical and chemical properties, and have industrially important value. are doing. However, these synthetic fibers have low hygroscopicity and water absorption,
Use in underwear, inner garments, sheets, towels, and other applications that require moisture absorption or water absorption has been limited.

[0003] As a method for imparting lightness, hygroscopicity, water absorption and the like to these synthetic fibers, hollow fibers are used for imparting lightness, and polyester fibers are hydrophilic for imparting moisture absorbency and water absorption. And a method of making the surface or inside of the polyester fiber porous. However, it is not enough to reduce the weight of synthetic fibers by these methods.For example, usually, hollow fibers are produced by spinning a polymer from a hollow spinning nozzle. Even if a hollow structure is once applied, the ratio of the hollow portion tends to decrease due to the surface tension of the resin in the molten state before it is solidified, the take-up tension during spinning, etc. It is often difficult to reduce the weight.

[0004] In order to improve the water absorbency and moisture absorbency, the above-mentioned post-treatment method has a drawback that the provided moisture absorbency and water absorbability are reduced by washing. As a method for remedying such a defect, graft polymerization of a monomer such as acrylic acid or methacrylic acid on a polyester fiber has been proposed, but it has not yet reached a practical level. This is mainly because the polyester has a rigid structure, does not have a reactive functional group, and is difficult to graft-polymerize the above monomers because it is hydrophobic. This is due to the fact that the fiber becomes hard and the strength of the fiber is reduced.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a soft and soft touch, excellent light weight,
It is an object of the present invention to easily obtain a woven or knitted fabric made of synthetic fiber having excellent durability and having a low hygroscopicity and a low water absorption without causing troubles or undesired coloring in a polymer design or fiberizing step.

[0006]

That is, the present invention relates to a fiber (A) containing an ethylene-vinyl alcohol copolymer having a crosslinked structure as at least one component and a hydrophobic fiber having a single fiber fineness of 1.1 dtex or less. What is claimed is: 1. A woven or knitted fabric comprising a multifilament comprising a fiber having at least one component of a polymer fiber (B), wherein a hydrophobic polymer fiber fiber (B) is located on a surface portion of a woven or knitted fabric rather than on a central portion thereof. It is a woven or knitted fabric characterized by being present in large numbers,
In the present invention, a split-type composite fiber multifilament comprising an ethylene-vinyl alcohol-based copolymer and a hydrophobic polymer is subjected to a splitting treatment to prepare a woven or knitted fabric, and the woven or knitted fabric is then subjected to a pH of 1.0 to 5. Under acidity of 0, the following formula (1)
Immersed in a solution containing the compound represented by
A process for producing a powder touch woven or knitted fabric, which is performed at 0 ° C.

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Further, according to the present invention, a splitting-type composite fiber multifilament comprising an ethylene-vinyl alcohol copolymer and a hydrophobic polymer is subjected to a splitting treatment, and the treated multifilament is adjusted to a pH of 1.0-5. A powder-touch woven or knitted fabric characterized by being immersed in a solution containing the compound represented by the above formula (1) under an acidity of 0, treated at 100 to 140 ° C, then formed into a woven or knitted fabric, and further subjected to wet heat treatment. It is a manufacturing method of.

In particular, in the present invention, the fiber (B) has a flat cross-sectional shape so that a satisfactory texture (powder touch) can be obtained, and a structure in which a large amount of hydrophobic polymer fibers are present on the surface of the woven or knitted fabric. It is preferably a woven or knitted fabric, double weave, honeycomb weave, or waffle that can be easily formed.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The fiber (A) containing at least one component of the ethylene-vinyl alcohol copolymer used in the present invention refers to a single fiber of the ethylene-vinyl alcohol copolymer or an ethylene-vinyl alcohol copolymer. It is a conjugate fiber containing an alcohol-based copolymer as one component, and its single-fiber fineness is preferably from 0.02 to 1.1 dtex.

The ethylene-vinyl alcohol copolymer in the fiber (A) used in the present invention has a repeating unit ratio of ethylene of 25 to 70 mol%, and the remainder is vinyl alcohol alone, or vinyl alcohol and other alcohol. What consists of a repeating unit of a vinyl monomer is preferable. When the proportion of ethylene units in the copolymer is 25
If it is less than 75 mol%, that is, if the ratio of vinyl alcohol units is more than 75 mol%, the spinnability at the time of fiberization becomes poor and single yarn breaks during spinning or drawing.
In some cases, the number of thread breaks is increased and the flexibility is lacking. In the case of using a high-melting-point polymer such as polyethylene terephthalate as another hydrophobic polymer in a composite fiber composed of an ethylene-vinyl alcohol copolymer and another hydrophobic polymer, the temperature is usually 250 ° C. or higher. In this case, if the proportion of the ethylene unit is less than 25 mol%, the heat resistance of the ethylene-vinyl alcohol copolymer becomes insufficient, and it may be difficult to obtain a good conjugate fiber. is there.

The ethylene-vinyl alcohol copolymer can be obtained by saponifying the vinyl acetate portion of the ethylene-vinyl acetate copolymer, and the saponification degree is preferably about 95% or more. preferable. When the degree of saponification is low, not only the crystallinity of the copolymer is reduced and physical properties such as strength are reduced, but also the copolymer is easily softened, and a trouble occurs in the fiberization step, and it is obtained. The texture of the fiber is inferior, which is not preferable.

As the ethylene-vinyl alcohol copolymer, it is usually preferable to use one having a number average molecular weight of about 8,000 to 20,000. The ethylene-vinyl alcohol copolymer was purchased from Kuraray Co., Ltd. as EVAL (registered trademark).
And commercially available from Nippon Synthetic Chemical Industry Co., Ltd. under the trade name of Soarnol (registered trademark). However, a commercially available copolymer of ethylene and vinyl acetate is purchased and saponified, or an ethylene-vinyl acetate copolymer is produced from ethylene and vinyl acetate by radical polymerization or the like and saponified. May be.

In any case, when an alkali metal ion such as sodium ion and potassium ion and an alkaline earth metal ion such as calcium and magnesium are present in the ethylene-vinyl alcohol copolymer, the main component in the copolymer is obtained. Chain breakage, side chain elimination, excessive cross-linking, etc. occur, resulting in a decrease in the thermal stability of the copolymer, breakage during spinning due to gelation of the copolymer, clogging of the spinning filter, and the accompanying spin pack. Since a sudden increase in pressure and a shortened nozzle life are caused, it is preferable to reduce the content of these ions as much as possible, preferably 100 ppm or less, particularly 50 ppm or less.

The ethylene-vinyl alcohol copolymer in the fiber (A) is preferably cross-linked. Examples of a method for imparting cross-linking include electron beam cross-linking and acetalization. Acetalization is preferred. The cross-linking treatment makes it possible to reduce the weight. In the present invention, the treating agent used in the acetalization treatment for obtaining the crosslinked ethylene-vinyl alcohol copolymer fiber is preferably at least one compound represented by the following formula (1).

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In the formula, as the alkyl group represented by R _{1 to} R ₄ , a lower alkyl group having 1 to 4 carbon atoms is preferable, and a methyl group is particularly preferable in terms of ease of use. The alkyl group may be substituted with an alkyleneoxy group such as an ethyleneoxy group, and all of R _{1 to} R ₄ may be the same type of alkyl group or different. Further, as the alkylene group forming a ring, a lower alkylene group having 1 to 4 carbon atoms is preferable, but a 5-membered or 6-membered ring is preferable in consideration of the stability of the ring structure. Therefore, ethylene having 2 to 3 carbon atoms is preferable. And propylene groups are preferred. Any of these alkyl groups and alkylene groups may have a substituent. In the formula, n is a value calculated in consideration of the composition ratio when treating using a plurality of the compounds, and is not necessarily an integer.

The compound preferably does not have a branched chain during the crosslinking treatment, and R ₅ is preferably hydrogen. However, the compound has R ₅ having 1 to 1 carbon atoms.
A mixture of a compound having a branched chain, which is a lower alkyl group of 4, and a compound having no branched chain may be used. When R ₅ is an alkyl group, its number is n
However, in the present invention, it is not necessary that all n groups are alkyl groups. In the case where some of n groups are alkyl groups and the rest are hydrogen, that is, the sum of an alkyl group and hydrogen Is n. Further, the alkyl groups may be the same kind of groups or different kinds of groups. The compound is extremely stable because its terminal is blocked with an alkyl group or an alkylene group forming a ring, and is not oxidized even when contacted with oxygen in the air. The acetal decomposition reaction of the compound itself proceeds by applying high temperature and high pressure even under weak acid by this terminal blocking, and when an ethylene-vinyl alcohol copolymer having a hydroxyl group coexists there, on the side of the copolymer swollen with water, An acetalization reaction occurs. The acetal exchange reaction (crosslinking reaction) accompanied by such dealcoholization is hereinafter referred to as an acetal decomposition and regeneration reaction.

The hydrophobic polymer fiber (B) used in the present invention preferably has a single fiber fineness having a lower limit of 0.05 dtex, an upper limit of 1.1 dtex, more preferably 0.5 dtex. It is 0.4 dtex or less. If it is larger than 1.1 dtex, it is not preferable because it becomes impossible to obtain a woven or knitted fabric having a satisfactory texture (powder touch) excellent in lightweight feeling and high water absorbency, which is the object of the present invention.

In order to achieve the object of the present invention, it is important that the fiber (A) containing an ethylene-vinyl alcohol copolymer having a crosslinked structure as at least one component has a single fiber fineness of 1.1 dtex or less. A woven or knitted fabric composed of multifilaments comprising a certain hydrophobic polymer fiber (B), wherein the hydrophobic polymer fiber (B) has a woven or knitted fabric in a cross section of the woven or knitted fabric orthogonal to the length direction of the multifilament. It is important that the hydrophobic polymer fibers (B) account for at least 60% of the filaments present at the outermost surface in the cross-section of the woven or knitted fabric. Is preferred. Here, the outermost surface in the cross section of the woven or knitted fabric means the outermost surface of the woven or knitted fabric when the cross section is observed, and the ratio is a value calculated by measuring the filament located on the outermost surface. Further, if the divided hydrophobic polymer fibers are less than 60% unevenly distributed on the outermost surface, it is difficult to obtain a powder-touched woven or knitted fabric, which is the object of the present invention, and it is unfavorable because it causes irritation in dyed products. .

The multifilament comprising the fiber (A) and the fiber (B) constituting the woven or knitted fabric of the present invention may be prepared by separately fiberizing each fiber in advance, or may be prepared by ethylene-vinyl. Using a split peeling type composite filament in which an alcoholic copolymer and a hydrophobic polymer are composited, the two components are split in a post-processing step or the like, and as a result, the fiber (A) and the fiber (B) It can be used as a woven or knitted fabric. As the split-peel type composite filament, the above-mentioned hydrophobic polymer and ethylene-vinyl alcohol-based polymer are combined in a single filament, for example, in a state of being multi-layered as shown in FIGS. 1 and 2. It is possible to use what was done. In the split-release multi-composite filament of the combination of the ethylene-vinyl alcohol-based copolymer and the hydrophobic polymer, it is preferable to use a polyester-based polymer as the hydrophobic polymer in view of the split-release properties of both components. preferable.

The hydrophobic polymer used as one component of the split-peelable multi-composite filament of the present invention is preferably a crystalline hydrophobic polymer having a melting point of 150 ° C. or more from the viewpoint of heat resistance, dimensional stability and the like. Specifically, polyester,
Examples thereof include polyamide and polypropylene.

Examples of the polyester include terephthalic acid, isophthalic acid, naphthalene-2,6-dicarboxylic acid, phthalic acid, α, β- (4-carboxyphenoxy) ethane,
Aromatic dicarboxylic acids such as 4,4'-dicarboxyphenyl and 5-sodium sulfoisophthalic acid; aliphatic dicarboxylic acids such as azelaic acid, adipic acid, sebacic acid and esters thereof; ethylene glycol, diethylene glycol, 1,3 -Propanediol, 1,4-
Fiber-forming polyesters composed of diols such as butanediol, 1,6-hexanediol, neopentyl glycol, cyclohexane-1,4-dimethanol, polyethylene glycol and polytetramethylene glycol. Polyesters in which at least mol% are ethylene terephthalate units or butylene terephthalate units are preferred. Also, a small amount of additives in the polyester, for example, optical brightener, matting agent,
A stabilizer, an ultraviolet absorber, a coloring agent, a flame retardant and the like may be contained.

The woven or knitted fabric comprising a multifilament of a hydrophobic polymer fiber and an ethylene-vinyl alcohol copolymer fiber as referred to in the present invention is particularly preferably a honeycomb weave using wefts and warps of the multifilament. As the use of the yarn, the multi-composite filament is a weft,
Alternatively, it may be used for each of the warp yarns, and may be used for other woven or knitted fabrics as appropriate. Further, the specifications of the woven fabric in this case include a honeycomb weave and a double weave, and the honeycomb weave is particularly preferable to achieve the object of the present invention. In this case, the standard of the knitting is preferably a waffle.

Next, the woven or knitted fabric of the present invention is subjected to splitting treatment of a splittable composite fiber multifilament comprising an ethylene-vinyl alcohol copolymer and a hydrophobic polymer and having a single fiber fineness of 1.1 dtex or less, In the state of a multifilament or after forming a woven or knitted fabric, the PH is 1.0 to 5.
Under an acidic condition of 0, a solution containing a compound represented by the following formula (1) in an amount of 3% by weight or more based on the ethylene-vinyl alcohol copolymer constituting the fiber (A) has a temperature of 1%.
It can be produced by acetalization treatment (crosslinking treatment) at 00 ° C to 140 ° C.

The above-mentioned division processing method includes a physical treatment such as false twist and a chemical division treatment method such as an alkali treatment when the hydrophobic polymer is polyester.

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The acetalization treatment of the ethylene-vinyl alcohol copolymer is not limited to simply reacting with the copolymer. It is important that the woven or knitted fabric after the treatment exhibits the effects of the object of the present invention. It is. PH of processing solution is 1.0
If it is less than 1, the processing machine is corroded and has no operability. On the other hand, when the pH exceeds 5.0, the acetal decomposition / regeneration reaction is difficult to proceed unless the conditions such as the treatment temperature and the treatment time are severe, and the heat shrinkage of the uncrosslinked portion occurs earlier than the crosslinking, and The fibers containing the ethylene-vinyl alcohol copolymer can be unevenly distributed in the central portion of the woven or knitted fabric so as to be 60% or more, but excessive shrinkage results in lack of practicality. In order to achieve the object effects of the present invention, the pH of the acetal decomposition / regeneration reaction solution was adjusted to 2.0.
It is desirable to set the value to 4.0 or more.

Examples of the crosslinking agent used in the acetal treatment include dialdehyde compounds. However, these dialdehyde compounds are susceptible to air oxidation, and have the disadvantage that they have a strong irritating odor and have problems in handling.To avoid these problems, the dialdehyde terminal is protected by a substituent such as an alkyleneoxy group. It is preferred to use the compounds described. Such a terminal-protected compound causes an acid catalyst, for example, a mineral acid such as sulfuric acid, hydrochloric acid, or phosphoric acid, formic acid, acetic acid, oxalic acid, or succinic acid when causing a crosslinking reaction in the ethylene-vinyl alcohol-based copolymer. By utilizing an organic acid such as maleic acid or the like, or a solid acid such as activated clay, it is possible to decompose into an aldehyde and to carry out a crosslinking reaction at the same time.

Preferred specific examples of the above-mentioned dialdehyde compound in which the terminal is protected are 1,1,6,6
-Tetramethoxyhexane, 1,1,6,6-tetraethoxyhexane, 1,1,7,7-tetramethoxyheptane, 1,1,7,7-tetraethoxyheptane, 1,
1,8,8-tetramethoxyoctane, 1,1,8,8
-Tetraethoxyoctane, 1,1,9,9-tetramethoxynonane, 1,1,9,9-tetraethoxynonane, 1,1,9,9-bisethylenedioxynonane,
1,1,10,10-tetramethoxydecane, 1,1,
10,10-tetraethoxydecane, 1,1,11,1
1-tetramethoxyundecane, 1,1,11,11-
And tetraethoxyundecane. These compounds may be used alone or in combination of two or more.
Among them, 1,1,9,
9-tetraethoxynonane and / or 1,1,9,9
-Bisethylenedioxynonane and / or 1,1,
9,9-bispropylenedioxynonane and the like are more preferably used, and 1,1,9,9-bisethylenedioxynonane is particularly preferably used. However, it is not limited to these compounds. Acetal compounds from all existing dialdehyde compounds can be mentioned.

Further, in the present invention, at the time of acetal cross-linking treatment, a compound (1) and a functional compound such as proteins such as collagen, aminopolysaccharides such as chitosan, sodium ligninsulfonate and carboxymethylcellulose coexist in the treatment solution. By allowing the compounds to react, the compounds (1) can be immobilized on the ethylene-vinyl alcohol-based copolymer via the compound (1), so that higher water absorption can be exhibited.

[0029]

EXAMPLES The present invention will be described below in detail with reference to examples, but the present invention is not limited to these examples. The measured values in the examples were measured by the following methods,
It is calculated. (1) Lightweight Evaluated by sensitivity measurement. The same thickness as the woven or knitted fabric before processing
Compared to a woven or knitted fabric having a density of 100% PET, the treated woven or knitted fabric was indicated as ○ when it felt lighter, Δ when it felt comparable, and × when it felt heavy. (2) Water Absorption Water Absorption (Wicking) Water absorption (wicking) was measured according to JIS L-1096. One drop of ion-exchanged water (1
/ 25 cc) was dropped from a height of 1 cm, and the time (sec) until the specular reflection disappeared was measured. Water absorption The water absorption was measured according to JIS L-1018.
Three test pieces of 7.5 × 7.5 cm were collected, and 27 ± 1 ° C.
Immersed in an immersion tank filled with water for 20 minutes, and then centrifuged at a speed of 2440 rpm with a centrifugal dehydrator having a radius of rotation of 15 cm.
The specimen was squeezed by centrifugal dehydration for 1 minute, and the average water absorption (%) was determined by the following equation. Water absorption (%) = {(W ₁ −W) / W} × 100 W: mass before water absorption (g) W ₁ : mass after water absorption (g) (3) Strength retention ratio Woven / knitted fabric before and after processing The decrease in strength retention was indicated by magnitude.

Example 1 Using an ethylene-vinyl alcohol copolymer having an ethylene content of 44 mol%, a saponification degree of 99% and a melting point of 165 ° C., and polyethylene terephthalate (PET),
At a composite ratio of 1, the ethylene-vinyl alcohol-based copolymer and PET are 5 layers in the cross section of the fiber as shown in FIG. 1 and the PET is 6 layers in a single filament. The composite polymer was spun at a spinning temperature of 260 ° C. and a spinning speed of 1000 m / min. The obtained spun yarn is brought into contact with a hot roller at 75 ° C. and a hot plate at 140 ° C. by using a normal roller plate type stretching machine so as to be stretched so that the stretching ratio becomes 3 times, and 111dtex / 24. A composite filament of the filament was obtained. This composite filament was false-twisted under the following conditions, and separated and separated into an ethylene-vinyl alcohol copolymer and PET.

Yarn speed 150 m / min Overfeed ratio 0.3% Number of twists 2640 T / M First stage heater temperature 120 ° C. 150 T / M of the twisted split multi-filament processed yarn is used as warp and weft, and a honeycomb is used. Weaving created.

Normal desizing of the woven fabric at 80 ° C.
Perform scouring, washing with water, dehydration, intermediate drying at 110 ° C,
Presetting at 150 ° C. was performed, a crosslinking reaction treatment was performed at a predetermined treatment concentration of a crosslinking agent bisethylenedioxynonane, and oxidative washing was performed. At that time, PH of the crosslinking reaction treatment,
The temperature was changed as shown in Table 1. Treatment liquid composition; cross-linking agent bisethylenedioxynonane 10% omf Emulsion emulsion of cross-linking agent 0.5 g / l (active ingredient: sodium dodecylbenzenesulfonate, manufactured by Matsumoto Yushi) Bath ratio 50: 1 (acetic acid, sulfuric acid) PH was changed with formic acid and maleic acid.) Treatment temperature (temperature shown in Table 1) Treatment time 40 minutes Oxidation washing Hydrogen peroxide solution (30%) 5 cc / l Sodium silicate 1 g / l Amilazine D (first) 1g / l 80 ° C × 20 minutes

After the treatment, the obtained woven fabric has a fineness of 0.38 dtex in the hydrophobic polymer (PET) fiber present at the outermost surface portion in the cross section, 83% in the surface portion, and shows that the woven fabric surface has hydrophobicity. Since the polymer (PET) fiber was unevenly distributed, a satisfactory texture (powder touch) was obtained. In addition, water absorbency and light weight were also confirmed, and the result was that there was little decrease in the strength retention.

[0034]

[Table 1]

Example 2 A double weave was prepared using the same twisted yarn of the split-peelable multi-composite filament as in Example 1, and the same processing as in Example 1 was performed. However, the pH and temperature at the time of the crosslinking reaction treatment were changed as shown in Table 1. In the obtained woven fabric, the fineness of the hydrophobic polymer (PET) fiber present at the outermost surface in the cross section is 0.38 dtex, the ratio is 80%, and the hydrophobic polymer (PET) fiber is unevenly distributed on the surface. Therefore, it had a satisfactory texture (powder touch). In addition, water absorption
The lightness was also confirmed, and the result was that the decrease in the strength retention was small.

Example 3 A ropile dough was prepared by using the same twisted split multi-filament filament-processed yarn as in Example 1.
The same processing was performed. However, the pH and temperature at the time of the crosslinking reaction treatment were changed as shown in Table 1. The obtained woven fabric is a hydrophobic polymer (PE
T) The fineness of the fiber is 0.38 dtex and the ratio is 77.2%
The hydrophobic polymer (PET) fibers were unevenly distributed on the surface, and thus had a satisfactory texture (powder touch). In addition, water absorbency and light weight were also confirmed, and the result was that there was little decrease in the strength retention.

COMPARATIVE EXAMPLE 1 A honeycomb weave was prepared using the same twisted split multi-filament filament yarn as in Example 1, and the same processing as in Example 1 was performed. However, PH at the time of the crosslinking reaction treatment,
The temperature was changed as shown in Table 1. The treatment in which the pH value was lowered was not evaluated because the treatment resulted in corrosion of the machine, and there was no operability, and it was impossible to obtain a woven or knitted fabric after the treatment.

Comparative Example 2 A honeycomb weave was prepared using the same twisted split multi-filament filament yarn as in Example 1, and the same processing as in Example 1 was performed. However, PH at the time of the crosslinking reaction treatment,
The temperature was changed as shown in Table 1. When the pH was raised from an appropriate value, an acetal decomposition / regeneration reaction was hardly performed, and a woven or knitted fabric with excessive shrinkage was obtained, which lacked practicality and could not be evaluated.

COMPARATIVE EXAMPLE 3 A honeycomb weave was prepared using the same cross-twisted split-peelable multi-composite filament yarn as in Example 1, and the same processing as in Example 1 was performed. However, PH at the time of the crosslinking reaction treatment,
The temperature was changed as shown in Table 1. When the treatment temperature was low, the shrinkage of the ethylene-vinyl alcohol copolymer fiber did not progress, the hydrophobic polymer fiber was not unevenly distributed on the surface portion, and a satisfactory texture (powder touch) was not obtained.

Comparative Example 4 Honeycomb weave was prepared using the same twisted split multi-filament filament yarn as in Example 1 and processed in the same manner as in Example 1. However, PH at the time of the crosslinking reaction treatment,
The temperature was changed as shown in Table 1. If the processing temperature is too high,
It was stuck and lacked practicality and could not be evaluated.

Comparative Example 5 Example 1 was repeated except that the split-peelable multi-composite filament was used such that the ethylene-vinyl alcohol copolymer used in Example 1 had one layer and polyethylene terephthalate had two layers. In the same manner as in Example 1, the fabric was separated and peeled to prepare a honeycomb weave. However, the pH and temperature at the time of the crosslinking reaction treatment were changed as shown in Table 1. The fineness of hydrophobic polymer (PET) fiber is 1.5 dt
When ex was large, uneven distribution of hydrophobic polymer fibers on the surface of the woven fabric was recognized, but satisfactory texture (powder touch) could not be obtained.

Comparative Example 6 A honeycomb weave was prepared using yarn having the same specifications as in Example 1 except that nylon 6 was used instead of ethylene-vinyl alcohol, and a comparative evaluation was performed. When nylon 6 was used instead of ethylene-vinyl alcohol, there was no shrinkage of nylon, so that uneven distribution of hydrophobic polymer fibers on the surface did not occur.
Satisfactory texture (powder touch) was not obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an example of a split exfoliated composite filament used in the present invention.

FIG. 2 is a cross-sectional view of another example of the split peelable composite filament used in the present invention.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A41D 31/00 501 A41D 31/00 501D 502 502B 503 503E 503G D03D 11/00 D03D 11/00 Z D04B 1 / 16 D04B 1/16 21/00 21/00 B D06M 11/00 D06M 11/00 13/165 13/165 // D01F 8/10 D01F 8/10 C D06M 101: 22 D06M 101: 22 7/02 BF Terms (reference) 4L002 AA05 AA07 AB05 AC07 DA03 EA03 FA01 4L031 AA16 AA18 BA33 DA08 4L033 AA06 AA07 AB02 AB05 AB06 AC07 AC15 BA14 CA48 4L041 AA07 AA20 BA04 BA05 BA11 BA34 BA42 BC02 BD14 BD20 CA44 DD01 EE14 A14 EE13 EA14 EE13 AA21 AA30 AA35 AA37 AA47 AA54 AB07 AB16 AB21 AC15 BA01 BA02 BA09 CA00 CA07 DA01 DA21 EB00 EB05

Claims (10)

[Claims] 1. A fiber (A) comprising an ethylene-vinyl alcohol copolymer having a crosslinked structure as at least one component.
And a multifilament comprising a fiber having at least one component of a hydrophobic polymer fiber (B) having a single fiber fineness of 1.1 dtex or less, wherein the hydrophobic polymer fiber fiber ( A woven or knitted fabric characterized in that B) is present more on the surface than at the center of the woven or knitted. 2. The woven or knitted fabric according to claim 1, wherein the hydrophobic polymer is a polyester. 3. The woven or knitted fabric according to claim 1, wherein the cross-sectional shape of the fiber (B) is a flat cross section. 4. The woven or knitted fabric according to claim 1, wherein the structure of the woven or knitted fabric is a double weave or a honeycomb weave. 5. A split-type composite fiber multifilament comprising an ethylene-vinyl alcohol copolymer and a hydrophobic polymer is subjected to a splitting treatment to prepare a woven or knitted fabric, and then the woven or knitted fabric is adjusted to a pH of 1.0 to 5. Immersed in a solution containing a compound represented by the following formula (1) under acidity of 0.0
A method for producing a powder-touch woven or knitted fabric, which is performed at a temperature of 140 to 140 ° C. Embedded image 6. A splitting treatment of a splittable multifilament multifilament comprising an ethylene-vinyl alcohol copolymer and a hydrophobic polymer, and subjecting the split multifilament to an acid having a pH of 1.0 to 5.0. The following equation (1)
Immersed in a solution containing the compound represented by
A method for producing a powder touch woven or knitted fabric, which comprises treating at 0 ° C., then forming a woven or knitted fabric, and further performing a wet heat treatment. Embedded image 7. The method for producing a woven or knitted product according to claim 5, wherein the division treatment is false twisting. 8. The method according to claim 5, wherein the division is a chemical treatment. 9. An outer garment comprising the woven or knitted fabric according to any one of claims 1 to 4. 10. A wiping cloth made of the woven or knitted fabric according to any one of claims 1 to 4.