JPH11315445A - Woven and knitted fabric having excellent antistatic property, water absorption property, hygroscopic property and moisture releasing property - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a woven fabric or a knitted fabric having high antistatic properties, water absorption, hygroscopic properties and moisture releasing properties and slight yellowing with time even in storage for a long period of time. SOLUTION: This woven fabric or knitted fabric comprises a polyamide-based yarn A having performances of moisture absorption of >=1.5 times that of nylon 6 at 34 deg.C at 90% relative humidity RH obtained by adding a polyethylene oxide modified substance prepared by reacting a polyalkylene oxide with a polyol and an aliphatic diisocyanate compound and a polyester yarn B in the mixing ratio of the yarn A/B in the woven fabric or knitted fabric of 30/70-70/30 by weight and has excellent antistatic properties, water absorption, hygroscopic properties and moisture releasing properties.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to antistatic property, water absorption property,
The present invention relates to a woven or knitted fabric which is excellent in moisture absorption and desorption, and which has very little yellowing even after long-term storage, and which is suitable as a material for clothing such as innerwear, middle clothing, shirts, blouses and sportswear.

[0002]

2. Description of the Related Art Synthetic fibers are superior to natural fibers such as cotton, hemp, wool, and silk in strength, abrasion resistance, dimensional stability, wash and wear, and quick-drying. Widely used as a material. However, synthetic fibers do not have the excellent antistatic, water-absorption and moisture-absorption properties that natural fibers generally have, and when worn in the winter, clinging to dust and dust adhere to them due to static electricity, and when they are worn in the summer, sweating causes stuffiness. , And stickiness, etc. occurred, and it was inferior in terms of comfort to natural fibers.

In order to solve the above problems, attempts have been made to impart antistatic property and water absorption property to synthetic fibers. For example, a method in which an antistatic agent and a water absorption finishing agent are used in combination with a V-shaped, U-shaped or modified cross-section yarn having one or more recesses (Japanese Patent Application Laid-Open Nos. 54-131405 and 52-148218).
JP, JP-A-53-106848, JP-A-55.
No. 122074) and the like are known, but these methods can give a certain amount of antistatic property and water absorption performance, but have poor performance durability and moisture absorption performance of natural fiber. It was not, and it was inferior to natural fiber in terms of comfort.

In response to the above problems, various attempts have been made to give synthetic fibers antistatic properties, water absorption properties, and hygroscopic properties.
For example, as a method of imparting the above-mentioned performance to nylon fibers and polyester fibers by post-processing, a method of graft-polymerizing vinylcarboxylic acid using a radical initiator or an electron beam (JP-A-4-146271, JP-A-4-2722).
No. 272) is known, but this method has various problems such as reduction in fiber strength due to processing, hardening of texture, and lack of durability of effect.

Further, a composite fiber in which polyalkylene glycol is blended with polyester at the stage of producing the yarn (Japanese Patent Publication No.
No. 5214), a hollow fiber made of a fiber-forming polymer having a through groove penetrating from the fiber surface to the hollow portion (Japanese Patent Publication No. 60-37203), and a polyester fiber in which an organic sulfonic acid compound is uniformly dispersed is alkali. A treated microporous fiber (JP-A-60-167969) has been proposed. However, these fibers have low hygroscopicity levels, and they do not simultaneously satisfy both the antistatic property, the water absorbing property, and the moisture absorbing/releasing property at a sufficient level.

In order to solve these problems, a core-sheath type composite fiber composed of a resin having a moisture absorption performance of 10% or more as a core portion and a polyester as a sheath portion (Japanese Patent Laid-Open No. 2-9961).
No. 2) is proposed. However, although this fiber has sufficient water absorbency and moisture absorption/release properties in the raw yarn production stage, the sheath part of the fiber is damaged and the hygroscopic resin, which is the core component, elutes during the dyeing finishing process, especially during the weight reduction process. However, there is a problem that the desired water absorption and moisture absorption/release properties are reduced. Furthermore, a core-sheath composed of a core component composed of a water-insoluble polyethylene oxide modified product or a mixture of a water-insoluble polyethylene oxide modified product and polyamide proposed in Japanese Patent Application No. 9-289464 and a sheath component composed of polyamide. Although the woven and knitted fabric composed of the type composite fiber and the polyester fiber has a high level of antistatic property, water absorption property, and moisture absorption/release property,
There is a problem that the woven and knitted fabric turns yellow when left for a long time. As described above, it is extremely difficult to impart a sufficient level of antistatic property, water absorption property, and moisture absorption/release property to the synthetic fiber, and no practical examples have been recognized yet.

[0007]

The present invention has been made in view of the above circumstances, and is a woven or knitted fabric having a high degree of antistatic property, water absorption property, and moisture absorption/desorption property. It is a technical subject to provide a woven/knitted fabric with little yellowing even during storage for a certain period.

[0008]

The present invention solves the above problems and has the following configuration. That is, the present invention is a woven or knitted fabric comprising a polyamide fiber A having a moisture absorption rate of 1.5 times or more that of nylon 6 at a temperature of 34° C. and a relative humidity of 90%, and a polyester fiber B,
The mixing weight ratio A/B of the polyamide fiber A and the polyester fiber B in the woven or knitted fabric is 30/70 to 70/30.
And CIE when the woven or knitted fabric is left for 30 days
A woven or knitted fabric excellent in antistatic property, water absorption property and moisture absorption/desorption property, wherein the b value in the LAB color system is -1 to 5, and the polyamide fiber A is a polyalkylene oxide, a polyol or an aliphatic diisocyanate. Polyamide oxide modified product obtained by reaction with a compound is contained in polyamide, which is a woven or knitted fabric excellent in antistatic property, water absorption property, and moisture absorption/desorption property, and further, polyamide fiber A is polyalkylene oxide, polyol and fat. Antistatic property, which is a core-sheath type composite fiber composed of a core component composed of a mixture of a polyethylene oxide modified product or a modified product and a polyamide obtained by reaction with a genus diisocyanate compound and a polyamide, and water absorption, A woven or knitted fabric excellent in moisture absorption and desorption, and further, having antistatic property of 1000 V or less, water absorption of 150% or more, and moisture absorption capacity of 1.5% or more, antistatic property, water absorption, absorption and desorption. The gist is a woven or knitted fabric having excellent wettability.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below. In the present invention, in order to impart a high degree of water absorption and moisture absorption and release to the woven or knitted fabric, as one yarn constituting the woven or knitted fabric,
It is necessary to use polyamide fiber A having a moisture absorption rate of 1.5 times or more that of nylon 6 at a temperature of 34° C. and a relative humidity of 90%. Here, when the moisture absorption rate is less than 1.5 times that of nylon 6, the antistatic property and moisture absorption/desorption property which are the objects of the present invention cannot be obtained.

In the present invention, the temperature is 34° C. and the relative humidity is 90%.
The polyamide fiber A having a moisture absorption rate of 1.5 times or more that of nylon 6 is a homopolymer of nylon 4 and a copolymer mainly composed of this, polyvinylpyrrolidone, polyetheresteramide, polyalkylene oxide, or polyol. A fiber produced by adding a hygroscopic polymer such as a polyethylene oxide modified product obtained by a reaction with an aliphatic diisocyanate compound to a polyamide polymer and spinning. Where the spinnability,
Considering the physical properties of the yarn, dyeability, dyeing fastness, yellowing of the fiber after spinning, and the like, a polyethylene oxide-modified product obtained by reaction with a polyalkylene oxide, a polyol and an aliphatic diisocyanate compound is converted into a polyamide polymer. Fibers that are contained are preferably used.

Here, as the polyalkylene oxide used in the modified polyethylene oxide, polyethylene oxide, polypropylene oxide and copolymers thereof are used, and as the polyol, glycols such as ethylene glycol, diethylene glycol and propylene glycol, and aliphatic diisocyanates. Examples of dicyclohexylmethane-4,4'-diisocyanate, 1,6-hexamethylenediisocyanate and the like include alicyclic diisocyanates here. If a diisocyanate containing an aromatic component is used, the resulting woven or knitted fabric is colored or yellowed over time, which is not preferable.

In the present invention, as a method for incorporating the polyethylene oxide modified product into polyamide, a known blending method is used, or a polyethylene oxide modified product is used as a fiber sheath component and a polyamide is used as a core component, or a fiber core component is polyethylene oxide. As a blend of a modified product and a polyamide, a core-sheath composite fiber such as a sheath component made of polyamide, or one of the fibers is a polyethylene oxide modified product, the other is a polyamide, and one of the fibers is a polyethylene oxide modified product. A side-by-side composite fiber in which a blended product with a polyamide and the other with a polyamide is used. When one component of the core-sheath composite fiber or the side-by-side composite fiber is a blended product of a polyethylene oxide modified product and a polyamide, both may be melt-mixed in advance to form a master chip. Here, considering the spinnability, yarn quality, dyeability, dyeing fastness, sliminess when wet, and the like, the core component of the fiber is a polyethylene oxide modified product or a blended product of polyethylene oxide modified product and polyamide, and a sheath component. A core-sheath composite fiber made of polyamide is preferably used.

Polyamides used as part of the core component or as the sheath component in the present invention include nylon 6, nylon 66, nylon 11, nylon 12, nylon MXD.
Homopolymers such as (polymeta-xylylene adipamide) and copolymers or mixtures mainly of them are preferably used.

In the present invention, the content of the polyethylene oxide-modified product when the polyethylene oxide-modified product is contained is particularly limited in the present invention because the moisture absorption/release properties of the fiber differ depending on the type of polyamide used and the composite ratio of the core component and the sheath component. However, it is generally preferable to be in the range of 0.5 to 60% by weight based on the weight of the polyamide fiber. If the content of the polyethylene oxide modified product is less than 0.5% by weight, the desired moisture absorption and desorption property may not be obtained, and if the content exceeds 60% by weight, a problem may occur in the spinnability. Not preferable.

The polyamide fiber A used in the present invention can be manufactured by a conventional method. Here, the composite ratio in the case of the core-sheath composite fiber or the side-by-side composite fiber varies depending on the polymer used and the degree of performance required, but the weight ratio of the component containing the polyethylene oxide modified product and the component of the polyamide only. 15/8
It is preferably in the range of 5-85/15. If the proportion of the component containing the polyethylene oxide modified product is smaller than this, moisture absorption and desorption properties are inferior, and conversely, if the core component is too large, problems may occur in the spinnability, which is not preferable.

Next, as the polyester fiber B used in the present invention, homopolymers such as polyethylene terephthalate, polypropylene terephthalate and polybutylene terephthalate, and mainly containing these, isophthalic acid, 5-sodium sulfoisophthalic acid and naphthalenedicarboxylic acid are used. A copolymer with a dicarboxylic acid component such as adipic acid or a glycol component of another type, or a mixture of the above polyesters is preferably used.

The woven or knitted fabric of the present invention, which is excellent in antistatic property, water absorption and moisture absorption/release property, is a woven fabric or knitted product in which the above-mentioned polyamide fiber A and polyester fiber B are mixed, and as a mixing mode thereof, a polyamide is previously used. A method of producing a mixed fiber obtained by entanglement of a system fiber A and a polyester fiber B by a method such as a fluid disturbance treatment, and providing the mixed yarn to a woven or knitted product, a mixed weaving and a knitting of a polyamide fiber A and a polyester fiber B It can be obtained by a known method such as.

In the present invention, the mixing weight ratio A of the polyamide fiber A and the polyester fiber B in the above woven or knitted fabric is A.
/B needs to be in the range of 30/70 to 70/30. If the mixing weight ratio A/B is less than 30/70, the desired antistatic property, water absorption property, and moisture absorption/release property cannot be obtained, which is not preferable. If the mixed weight ratio A/B exceeds 70/30, the desired antistatic property cannot be obtained. Further, during dyeing, the disperse dye that dyes the polyester fiber B may contaminate the polyamide fiber A to a large extent, which may result in poor dyeing fastness.

Next, the woven/knitted fabric of the present invention has a b value in the CIE-LAB color system when left in a room where sunlight is incident but not directly exposed to sunlight in a room where temperature and humidity are not controlled. It must be between -1 and 5. This is necessary so that the final textile product has almost no change in color tone and the commercial value is not reduced, and the b value is preferably 0 to 3. The b value of the woven or knitted material changes depending on various factors such as impurities contained in the raw material of the polymer, polymerization conditions, spinning conditions, etc., but at present, there are many cases where a polymer having a moisture absorbing/releasing property has a major factor of deterioration of color tone. Therefore, in order to set the b value within the above range, it is necessary to improve the polymer having moisture absorption/release properties, but the above-mentioned polyalkylene oxide modified product has very little change in color tone and can be suitably used in the present invention. ..

In the present invention, the obtained woven or knitted fabric is JIS
It is preferable to have an antistatic property in which the frictional electrification voltage according to the L1094B method is 1000 V or less. Friction voltage is 1000
When it exceeds V, when this woven or knitted fabric is sewn and worn, there is clinging due to static electricity, adhesion of dust, and the like, which may make it uncomfortable to wear.

The woven or knitted fabric of the present invention is JIS L190.
7 Water absorption measured by the water absorption measurement method specified in 5.3 is 1
It is preferably 50% or more. When the hygroscopicity is less than 150%, it may vary depending on the wearing condition, but it may cause stickiness due to perspiration during wearing, which is not preferable.

The woven or knitted fabric of the present invention preferably has a moisture absorption capacity of 1.5% or more, which is a difference between the moisture absorption rate in the standard state and the moisture absorption rate at a temperature of 34° C. and a relative humidity of 90% RH. If the moisture absorption capacity is less than 1.5%, it may cause discomfort when worn, which is not preferable.

[0023]

In the present invention, the polyamide fiber A which constitutes the woven or knitted material together with the polyester fiber B has a high moisture absorbing/releasing property like nylon 4, or polyvinylpyrrolidone, polyether ester amide, Since the polyamide contains a polymer having a high degree of moisture absorption/desorption and water absorption such as a modified polyethylene oxide, it is possible to exhibit excellent moisture absorption/desorption and water absorption.

Although the above-mentioned polyamide fiber A has a high degree of moisture absorption/desorption and water absorption, it has an antistatic property of about 2000 V in terms of frictional electrification voltage, which is higher in static electricity than general synthetic fibers. Although it is a level at which clothes are not cluttered even if it occurs, it is at a level at which dust adheres due to static electricity (dust adherence does not disappear until the friction charging voltage becomes 1000 V or less).

However, by constructing the polyamide fiber A and the polyester fiber B as in the woven or knitted fabric of the present invention, a high degree of antistatic property can be exhibited. The reason for this is not clear, but the present inventors consider it as follows. Looking at the charge train of the polyamide and polyester of the present invention, when a static electricity is applied to the polyamide, it has a positive charge. On the other hand, when static electricity is applied to polyester, it has a negative charge. There are fibers such as cotton, silk, rayon, acetate, and acrylic between these polyamide and polyester charged strings, and by contacting these fibers,
Once the polyamide bears a positive charge and the polyester bears a negative charge, it is believed that these charges then cancel each other and the amount of charge decreases. At this time, in particular, when the polyamide fiber A is a polyamide containing a polyethylene oxide modified product obtained by reaction with a polyalkylene oxide, a polyol and an aliphatic diisocyanate compound, the charges cancel each other out by the ratio with the polyester fiber B. Although the amount is different, we think that an excellent antistatic effect can be obtained.

[0026]

[What is the same method as the 6.26.2 water absorption of JIS L1096 woven fabric test method? ]

(3) Antistatic property of woven or knitted product The antistatic property of the dyed sample was measured according to the following JIS. Half-life; JIS L-1094 A method Friction electrification voltage; JIS L-1094 B method (4) b value of woven or knitted sample The sunlight is incident in the room where the temperature and humidity are not controlled, but the sunlight is not directly exposed to the sunlight. After being left for 30 days, the light reflectance was measured using a Macbeth MS-2020 type spectrophotometer, and the color difference CIE defined by the International Commission on Illumination was used.
-Determined from LAB (actually automatically output by spectrophotometer). During measurement, in order to minimize the effect of reflected light from other than the sample, after folding the sample in multiple layers and visually confirming that light does not pass through the tissue gap,
Take a measurement.

Example 1 Concentration 0.5 g/deciliter in m-cresol solvent,
15 parts by weight of a polyethylene oxide modified product which is a reaction product of 85 parts by weight of nylon 6 having a relative viscosity of 2.6 measured at a temperature of 20° C. and polyethylene oxide, 1,4-butanediol and dicyclohexylmethane-4,4′-diisocyanate. A mixture obtained by dry blending and was used as a core component and the above nylon 6 as a sheath component, and a core-sheath type composite fiber having a core component/sheath component weight ratio of 50/50 was melt-spun.
At that time, using a spinneret having 12 discharge holes,
Melt-spun at a spinning temperature of 255°C and spun yarn at 18°C
After blowing air to cool and apply an oil agent, 130
It is wound up at 0 m/min, stretched 3.0 times, and 50d
A polyamide fiber A of /12f was obtained. The moisture absorption of this fiber at a temperature of 34° C. and a relative humidity of 90% was 13.0%. Next, polyethylene terephthalate having a concentration of 0.5 g/dl and a relative viscosity of 1.38 measured at a temperature of 25° C. was melt-spun in an equal weight mixed solvent of phenol and tetrachloroethane. At that time, melt spinning was performed at a spinning temperature of 285° C. using a spinneret having 36 round-shaped discharge holes, and the spun yarn was cooled by blowing air at 18° C. to give an oil agent. After that, it was wound up at a speed of 3600 m/min and stretched 1.5 times to obtain a polyester fiber B of 50 d/36 f. Polyamide fiber A obtained above
And polyester fiber B are used as the supply yarns, and an air entanglement treatment is performed using a DuPont interlacer JD-1 under the conditions of a yarn speed of 600 m/min, an air pressure of 1 Kg/cm ² , and an overfeed rate of 2.0%. The number is 55/m, and the mixing weight ratio of the polyamide fiber A and the polyester fiber B is 5
An entangled mixed yarn of 0/50 was obtained. Next, using this entangled mixed yarn as a warp and a weft, weave a plain woven fabric having a warp density of 120/inch and a weft density of 90/inch, and scouring and presetting by a conventional method using the obtained greige. After alkali reduction (weight reduction rate 21.2%), Sumikaron Yellow ERPD (Sumitomo Chemical Co., Ltd., disperse dye) 1% owf and Lanaset Yel
low 2R (Nippon Ciba Geigy Co., Ltd. acid dye) 1
% Owf dyeing (dyeing temperature 120°C, dyeing time 30 minutes)
I went. Furthermore, reduction cleaning treatment is performed by a conventional method, and 110
After drying at 60° C. for 60 minutes and heat treatment at 170° C. for 30 seconds, the woven fabric of the present invention was obtained.

Comparative Example 1 A woven fabric of Comparative Example was obtained by the same method as in Example 1 except that nylon 6 fiber 50d/12f was used as the polyamide fiber A.

Comparative Examples 2 and 3 Polyamide fiber A having a fineness of 50 d/12 f to 3
0d/6f (Comparative Example 2) and 120d/24f (Comparative Example 3) were changed, and the fineness of the polyester fiber B was 50d/36.
f to 100d/68f (Comparative Example 2), 30d/12f
Instead of (Comparative Example 3), the mixing weight ratio of the polyamide fiber A and the polyester fiber B was 23/77 (Comparative Example 2),
A woven fabric of a comparative example was obtained by the same method as in Example 1 except that the woven fabric was 80/20 (Comparative Example 3).

Comparative Example 4 In the same manner as in Example 1, except that 4,4'-diphenylmethane diisocyanate having an aromatic ring was used instead of dicyclohexylmethane-4,4'-diisocyanate as the raw material for the modified polyethylene oxide. 50d/24
The drawn yarn of f was obtained. Using this polyamide fiber A, a woven fabric of a comparative example was obtained in the same manner as in Example 1. The moisture absorption and desorption properties of this woven fabric were similar to those of Example 1, but the b value after 30 days of production was 12.6, which markedly turned yellow. Table 1 shows the evaluation results of the woven fabrics obtained in Example 1 and Comparative Examples 1 to 3.

[0031]

[Table 1]

As is clear from Table 1, the woven fabric obtained in Example 1 had excellent antistatic property, water absorption property and moisture absorption/release property, and was suitable as a material for comfortable clothing. on the other hand,
The woven fabrics of Comparative Example 1 in which the polyethylene oxide-modified product does not exist in the core component of the polyamide fiber A and Comparative Example 2 in which the proportion of the polyamide fiber A is low are the same in all items of antistatic property, water absorption property, and moisture absorption/desorption property. The performance was inferior. In addition, Comparative Example 3 in which the ratio of the core polyamide fiber A is high
The woven fabric of No. 1 had excellent water absorption and moisture absorption/release properties, but was inferior in antistatic property.

Example 2 50d sampled in Example 1 as polyamide fiber A
/12f was used. Then, polyethylene terephthalate having a concentration of 0.5 g/deciliter and a relative viscosity of 1.38 measured at a temperature of 25° C. was melt-spun in an equal weight mixed solvent of phenol and tetrachloroethane. At that time, melt spinning was performed at a spinning temperature of 285° C. using a spinneret having 36 W-shaped cross-sectional discharge holes, and the spun yarn was cooled by blowing air at 18° C. to give an oil agent. After doing 3600
It is wound up at a speed of m/min and stretched by 1.5 times to 50
A W-section polyester fiber B of d/24f was obtained. Next, using the polyamide fiber A and the W-section polyester fiber B, a knitted knitted fabric (knitting machine; LP) with a mock rhodia structure at a knitting ratio of 64.6% and 35.4%, respectively.
J-H Fukuhara Seiki Co., Ltd., 33 inch kettle, 3 gauge
2G) was obtained. Scouring by the usual method using the obtained raw machine,
After presetting, Sumikaron Yellow ERPD (Sumitomo Chemical Co., Ltd., disperse dye) 2% owf and Lanaset Yello
w 2R (Nippon Ciba Geigy Co., Ltd. acid dye) 2%
Dyeing (dyeing temperature 120° C., dyeing time 30 minutes) was performed with owf. Further, reduction cleaning treatment is carried out by a conventional method, 110°C
Was dried for 60 minutes and heat-treated at 170° C. for 30 seconds to obtain a knitted fabric of the present invention.

Comparative Example 4 Example 2 was repeated except that nylon 6 fiber 50d/12f was used as the polyamide fiber A in Example 2.
A knitted fabric of Comparative Example was obtained by the same method as described above.

Comparative Examples 5 and 6 Interwoven ratio A of polyamide fiber A and polyester fiber B
/B is 25.4%/74.6% (Comparative Example 6), 8
A knitted fabric for comparison was obtained in the same manner as in Example 2 except that the content was changed to 0.6%/19.4% (Comparative Example 7). Example 2
And the evaluation of the woven fabrics obtained in Comparative Examples 5 to 7 together.
Shown in.

[0036]

[Table 2]

As is clear from Table 2, the knitted fabric obtained in Example 2 had excellent antistatic properties, water absorption properties, and moisture absorption/release properties, and was suitable as a material for comfortable clothing. on the other hand,
The knitted fabrics of Comparative Example 4 in which the polyethylene oxide-modified product does not exist in the core component of the polyamide-based fiber A and Comparative Example 5 in which the proportion of the polyamide-based fiber A is small are the same in all items of antistatic property, water absorption property, and moisture absorption/desorption property. The performance was inferior. Further, the knitted fabric of Comparative Example 6 in which the proportion of the polyamide-based fibers A was large had excellent water absorption and moisture absorption/release properties, but was inferior in antistatic property.

[0038]

According to the present invention, it is possible to provide a woven or knitted fabric having a high degree of antistatic property, water absorption property, and moisture absorption/desorption property which are not available in conventional synthetic fibers, and to obtain clothes having excellent comfort. Is possible.

Claims (4)

[Claims] 1. A woven or knitted material comprising a polyamide fiber A having a moisture absorption rate of 1.5 times or more that of nylon 6 at a temperature of 34° C. and a relative humidity of 90%, and a polyester fiber B, wherein The mixing weight ratio A/B of the polyamide fiber A and the polyester fiber B occupies 30/70 to 70/
30 and C when the woven or knitted fabric is left for 30 days
A woven or knitted fabric excellent in antistatic property, water absorption property, and moisture absorption/desorption property, which is characterized in that b value in IE-LAB color system is -1 to 5. 2. The method according to claim 1, wherein the polyamide fiber A is a polyamide containing a polyethylene oxide modified product obtained by reaction with a polyalkylene oxide, a polyol and an aliphatic diisocyanate compound. Woven and knitted fabric with excellent electrical conductivity, water absorption and moisture absorption and desorption. 3. A core component composed of a polyethylene oxide modified product obtained by reacting a polyamide fiber A with a polyalkylene oxide, a polyol and an aliphatic diisocyanate compound or a mixture of the modified product and polyamide, and a sheath component composed of polyamide. The woven/knitted fabric excellent in antistatic property, water absorption property, and moisture absorption/desorption property according to claim 1, which is composed of a core-sheath type composite fiber. 4. The antistatic property is 1000 V or less, and the water absorption is 15.
0% or more, the moisture absorption capacity is 1.5% or more, the antistatic property according to claim 1, claim 2 or claim 3,
Woven and knitted fabric with excellent water absorption and moisture absorption.