JPH07189130A - Fabric and method for processing the same - Google Patents

Abstract

PURPOSE:To obtain fabric causing no uncomfortable wet feel even in case of much sweating, by forming the projections on the side of the fabric to come into contact with the skin and by coating the other side with a higher water- absorbing polymer. CONSTITUTION:The yarn projections, to come into direct contact with the skin, of fabric composed of natural fibers (e.g. cotton, hemp), regenerated fibers or synthetic fibers, esp. knit fabric containing >=50wt.% of highly water- absorbing natural fibers, are coated with pref. a fluorine- or silicone-based water repellent using a kiss coater followed by heat treatment; and the other surface of the fabric is coated with a highly water-absorbing polymer such as a polyacrylic acid salt-based polymer or PVA-based polymer followed by heat treatment, thus obtaining processed fabric causing no sticky feel to the skin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for processing a cloth which does not give an unpleasant moist feeling even when a large amount of sweat is sweated.

[0002]

2. Description of the Related Art Conventionally, as a method of processing a cloth which does not give an uncomfortable feeling of moistness such as stickiness to the skin, as disclosed in, for example, Japanese Patent Publication No. 1-53394 and Japanese Patent Publication No. 4-28830, A processing method is known in which a water-repellent-containing paste is applied to a convex portion on the surface side of a fabric that comes into contact with the skin by a printing method. This processing method does not make the skin feel uncomfortable and moist even when the fabric gets wet with sweat by quickly transferring the sweat from the water-repellent part of the convex part of the fabric that comes into contact with the skin during sweating to the water-absorption part other than the convex part. To do so.

[0003]

However, such a conventional processing method is effective for a small amount of perspiration, but for a large amount of perspiration exceeding the saturated water content of the fibers constituting the fabric. As for the fiber, since the fibers cannot retain water and all the parts other than the convex part in contact with the skin are saturated with water, sweat on the part adjacent to the convex part of the fabric is damaged,
There is a problem in that it gives an unpleasant moist feeling as in the case of clothing made of ordinary processed cloth.

The present invention is intended to solve such a problem, and provides a processed fabric which does not give an unpleasant moist feeling to the skin even when a large amount of perspiration exceeds the saturated water content of the fibers constituting the fabric. The purpose is to obtain.

[0005]

SUMMARY OF THE INVENTION The present invention achieves the above object and has the following configuration. That is, the present invention relates to a “processing of a fabric, which comprises a step of subjecting a convex portion of the cloth on the side in contact with the skin to a water-repellent treatment, and a step of applying a superabsorbent polymer to the other surface of the fabric. And "a cloth characterized in that a water-repellent treatment is applied to a convex portion of the cloth on the side in contact with the skin and a super absorbent polymer is applied to the other surface of the cloth". is there.

The present invention will be described in detail below.

The cloth used in the present invention may be a cloth using any fiber such as natural fibers such as cotton and hemp, regenerated fibers such as rayon, synthetic fibers such as polyester and nylon, and particularly, water absorption. A knitted fabric, a woven fabric, a non-woven fabric and the like containing 50% or more (of course, 100% may be included) of a natural fiber having a good property can be mentioned, and among them, a knitted fabric having a high bulkiness is most preferably used.

In the present invention, such a cloth is used as a fabric to be processed, and first, a water-repellent treatment is applied to the back side of the cloth, that is, the convex portion on the side which comes into contact with the skin. The convex portion on the back side of the cloth as used herein means a portion of the structure of the cloth in which threads are exposed and directly contacts the skin.

As the water-repellent agent used for the water-repellent treatment, fluorine-based, silicone-based, paraffin-based, ethylene urea-based, fatty acid-based water-repellent agents, etc. may be mentioned, but from the viewpoint of washing durability, the fluorine-based agent is used. It is preferable to use a water repellent or a silicone water repellent.

For the water repellent treatment, a screen printing machine,
Processing can be performed using any one-side processing machine such as roller printing machine, foam processing machine, spray processing machine, coating processing machine, kiss coater, etc., but water repellency is given only to the convex part of one side of the fabric. Most preferably, a kiss coater is used.

In order to apply the water repellent agent only to the convex portions on one side of the cloth by using a kiss coater, the water repellent agent treatment solution is used at a concentration of 50 to 2
After being applied by contacting the running fabric with a take-up roller at 100 g / liter, 100-
Heat treatment is performed at 180 ° C. for 1 to 2 minutes.

Next, in the present invention, a super absorbent polymer is applied to the other surface of the cloth. Examples of the super absorbent polymer used here include polyacrylate-based polymers, polyvinyl alcohol-based polymers, polyacrylamide-based polymers, and polyoxyethylene-based polymers. Specifically, as a polyacrylic acid-based polymer,
Arasorb (manufactured by Arakawa Chemical Co., Ltd.), Wonder Gel (manufactured by Kao Corporation), as a polyvinyl alcohol-based polymer, Aqua Reserve GP (manufactured by Nippon Synthetic Chemical Co., Ltd.),
Examples of the polyoxyethylene-based polymer include polyethylene oxide.

In order to impart a super absorbent polymer, first,
A polymer solution in which a super absorbent polymer is dissolved in a solvent is prepared. As the solvent used here, a solvent that can adjust the viscosity of the solution of each polymer to be low may be appropriately selected and used. For example, when polyethylene oxide is used as the superabsorbent polymer, water, acetonitrile, methylene dichloride, chloroform, ethylene dichloride, benzene,
Toluene, methanol, anisole, acetone, ethyl acetate, ethanol, etc. may be used as a solvent. Also,
For solvents that do not crosslink the superabsorbent polymer, it is desirable to add a crosslinker to cause the polymer to crosslink.

When applying the superabsorbent polymer, processing is performed using any one-side processing machine such as a screen printing machine, a roller printing machine, a rotary screen printing machine, a foam processing machine, a spray processing machine and a coating processing machine. Can be, but in essence, a rotary screen printing machine,
It is preferable to use a roller printing machine or a coating processing machine.

When the treatment liquid is applied, the superabsorbent polymer is applied on one side of the cloth by appropriately adjusting it so that the solid content is 1 to 5 g / m ² .

After applying the treatment liquid, drying and heat treatment are performed. Drying is performed at 80-180 ℃, 130-180 after drying
Heat treatment is performed at ℃ for several minutes. If the treatment temperature is lower than 130 ° C, a film of superabsorbent polymer having sufficient physical properties is not formed, and if it exceeds 180 ° C, it causes curing of the fiber, which is not preferable.

In the present invention, the object of the present invention can be achieved without any problem even if the water repellent treatment step on the convex portion of the fabric is performed after the step of applying the superabsorbent polymer.

The present invention has the above configuration.

[0019]

[Working] As in the present invention, when the water-repellent treatment is applied to the convex portion of the cloth which is in contact with the skin and the superabsorbent polymer is applied to the other surface of the cloth, the saturated water content of the fiber is increased especially when a large amount of sweat is generated. Even when sweating as described above, the sweat instantly moves from the convex part (water repellent part) on the side in contact with the skin to the non-water repellent part adjacent to it, and most of it becomes the superabsorbent polymer on the surface. Since it is sucked and transferred to the surface of the cloth, sweat is extremely reduced in the portion adjacent to the convex portion of the cloth, and therefore, the uncomfortable feeling of wetting and the feeling of stickiness are not felt.

[0020]

[Examples] The present invention will be described in detail below with reference to Examples. The measurement and evaluation of the performance of the fabrics in Examples were carried out by the following methods. (1) Friction resistance For the purpose of quantifying the wet feeling (greasy feeling) of the cloth to the skin, as shown in FIG. 1, a stainless roller 1 having a diameter of 5 cm was rotated at a surface speed of 4 cm / min to prepare a sample 2 The frictional resistance force with was measured. Cut the sample into strips measuring 20 cm x 5 cm and absorb water by 0.5 ml, 1.0 ml, 1.5 ml and 1.8 ml, respectively, in an atmosphere of 25 ° C and 65% RH.
The water-repellent surface of sample 2 was in contact with roller 1, and the frictional resistance (g) between sample 2 and roller 1 was measured. In addition, in the measurement, the sample 2 is pulled from one end by a load of 30 g applied to the roller 1. This method of measuring frictional resistance assumes natural contact of the fabric with the skin, and the feeling of wetting (stickiness) to the skin of the clothes, which is the main cause of discomfort due to sweating when wearing the clothes, There is a very good correlation, and the frictional resistance increases in proportion to the wet feeling (stickiness). (2) Water absorption Measured according to JIS L-1096 (dripping method). The dropping was performed from the water repellent side of the fabric.

Example 1 100% cotton, 30th count tenjiku knit (weight of 150 g
/ M ² ) as a fabric to be processed, and after scouring and bleaching it by a usual method, a water repellent is adhered to the convex portion on the back surface using a kiss coater according to the following prescription 1, and then a pin tenter is used. After drying at 110 ° C for 1 minute using
A dry heat treatment for 1 minute was performed. Prescription 1 Asahi Guard AG310 30 g / liter (Meisei Chemical Co., Ltd., fluorine water repellent)

After that, a treatment liquid having the following formulation 2 using water as a solvent was prepared and applied on the surface of the cloth by using a coating machine, dried at 110 ° C. for 1 minute by using a pin tenter, and then at 160 ° C. Was subjected to dry heat treatment for 2 minutes to obtain the processed cloth of the present invention. Prescription 2 Alcox E-60 50g
/ Liter (Meisei Chemical Co., Ltd., polyethylene oxide) Sumitex Resin NF-500K 50g
/ L (Sumitomo Chemical Co., Ltd., non-formalin cross-linking agent) Sumitex Accelerator X-60 15g
/ Liter (Sumitomo Chemical Co., Ltd., NF-500K catalyst)

For comparison with the present invention, a processed cloth for comparison (comparative example) was prepared in the same manner as in this example except that the step of applying the water-absorbing polymer to the surface of the fabric according to Formulation 2 was omitted in this example. 1) was obtained.

For reference, an unprocessed cloth (Comparative Example 2) was prepared and used for comparison with the present invention.

The performances of the present invention and the work cloth for comparison were measured and evaluated, and the results are shown in Table 1.

[Table 1]

As is clear from Table 1, the processed cloth of the present invention has a water absorbability as compared with Comparative Examples 1 and 2 (unprocessed), and the friction resistance increases even when the sample is in a wet state. It can be seen that there is little moisture, and even when a large amount of sweat is perceived, the feeling of wetting the fabric to the skin is small.

[0027]

According to the present invention, it is possible to obtain a processed cloth which does not give the skin an unpleasant wet feeling and a sticky feeling even when a large amount of perspiration of the fibers constituting the cloth exceeds the saturated water content. The work cloth of the present invention having such performances is suitable for mainly casual shirts, sportswear, etc. because it provides a comfortable wearing feeling.

[Brief description of drawings]

FIG. 1 is a perspective view showing a method for measuring a frictional resistance force according to the present invention.

[Explanation of symbols]

 1 roller 2 sample

Claims (2)

[Claims] 1. A method for processing a fabric, comprising a step of applying a water-repellent treatment to a convex portion of the fabric that comes into contact with the skin, and a step of applying a superabsorbent polymer to the other surface of the fabric. 2. A fabric, wherein a convex portion on the side of the fabric that comes into contact with the skin is subjected to a water repellent treatment, and the other surface of the fabric is provided with a superabsorbent polymer.