JPH06257073A - Method for processing fabric - Google Patents

Abstract

PURPOSE:To enable easy impartment of water repellency only to protruding parts on the side of a surface in contact with the skin. CONSTITUTION:A water repellent liquid having <=400cP viscosity is applied by using a kiss-roll coater to impart the water repellency to protruding parts on the side of a surface in contact with a skin. Thereby, the water repellency can readily be imparted only to the protruding parts on the side of the surface in contact with the skin without requiring the optimum viscosity regulation or using a specific printing pattern so as to impart the water repellency only to the protruding parts on the side of the surface in contact with 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 having a water absorbing / dissipating effect.

[0002]

2. Description of the Related Art As a conventional processing method of this kind, for example, in Japanese Patent Publication No. 1-53394 and Japanese Patent Publication No. 4-28830, a water-repellent-containing paste is applied to a convex portion on the surface side in contact with the skin by a printing method. A processing method for imparting is disclosed.

[0003]

In the conventional method disclosed in the above publication, water repellency is imparted only to the convex portion on the surface side in contact with the skin, and water repellency is not imparted to other portions except this convex portion. , It is important to adjust the viscosity of the water repellent treatment agent, and if the viscosity is too low, the water repellent-containing paste applied only to the protrusions easily permeates and diffuses into the surroundings and cannot be applied only to the protrusions. If the viscosity is too high, printing itself becomes difficult and the water-repellent-containing paste cannot be applied properly.

Among the sizing agents used for adjusting the viscosity, the emulsion sizing agent has a problem that the water repellency is hindered by the surfactant in the sizing agent, and sizing agents such as cellulose derivatives, starch derivatives and natural rubber are used. However, there is a problem that the glue must be removed by soaping after printing.

In the roller printing method, the amount of the water-repellent-containing paste adhered to the cloth changes depending on the contact pressure and angle of the cleaning doctor, and the surface that comes into contact with the skin varies depending on the kind of cloth, the woven or knitted structure, the basis weight, and the thickness. There is a problem in that it must be adjusted so as to impart water repellency only to the convex portion on the side.

[0006] In the screen printing method, since the paste containing the water repellent agent is accumulated in the concave portion of the cloth, the convex portion on the surface side in contact with the skin is repelled only when the cloth type, the woven / knitted structure, the basis weight and the thickness are different. There is a problem in that it must be adjusted so as to give water.

In the roller printing method, the shape and depth of the groove of the engraving roller, and in the screen printing method, the size of the screen pattern and mesh are important. There is a problem in that it must be adjusted so that water repellency can be imparted only to the convex portions on the contacting side.

In the printing method, there is a problem that printing cannot be performed unless the cloth is in a dry state. The present invention is to solve such a problem, it is not necessary to adjust the viscosity or to use a specific print pattern for imparting water repellency only to the convex portion on the surface side in contact with the skin, and the surface in contact with the skin It is also for the purpose of easily imparting water repellency only to the convex portion on the side.

[0009]

Means for Solving the Problems As a result of intensive studies for solving the above problems, the inventors of the present invention have found that if processing is performed using a kiss coater, it is not necessary to adjust the viscosity or use a specific printing pattern, and the skin The present invention has been reached by finding the fact that water repellency can be easily imparted to the convex portion on the side of contact.

That is, the gist of the present invention is a method for processing a fabric, which is characterized in that a water-repellent treatment liquid having a viscosity of 400 cp or less is imparted with water repellency to a convex portion on the side in contact with the skin by using a kiss coater. Is.

The present invention will be described in detail below. Examples of the water repellent used in the present invention include fluorine-based, silicon-based, paraffin-based, ethylene urea-based, and fatty acid-based water repellents, but from the viewpoint of washing durability, fluorine-based and silicon-based water repellents are used. It is preferable to use a drench.

The water repellent treatment liquid used in the present invention is a water repellent agent alone or, if necessary, in combination with a crosslinking agent for the water repellent agent, a catalyst and a softening agent. The kiss coater used in the present invention includes a one-roll kiss coater, a two-roll reverse kiss coater, a two-roll squeeze kiss coater, and three.
A processing machine such as a roll kiss coater, a roll dip coater, or a roll dip coater can be used. To impart water repellency uniformly only to the convex portion on the surface side in contact with the skin, the magnetic type 2 It is preferable to use the present roll squeeze kiss coater.

As shown in FIG. 1, a magnetic type two-roll squeeze kiss coater is one in which a supply roll 1 and an applicator roll 2 are attracted by a magnet inside a backup roll 3 and a magnetic force is applied to a cloth 4 to coat it. The amount of magnetic force is adjusted from 0% to 100%. If the magnetic force is increased, the coating amount on the cloth 4 is reduced, and if the magnetic force is decreased, the coating amount on the fabric 4 is increased. The coating amount can be adjusted according to the type of cloth, the woven / knitted structure, the basis weight, and the thickness. 5 is a water repellent treatment tank, which is the supply roll 1
The lower part of is immersed in the water repellent treatment liquid 6 in the water repellent treatment liquid tank 5.

When a magnetic type two roll squeeze kiss coater is used, the magnets are arranged at equal intervals inside the backup roll from one end to the other end of the backup roll, so that the nip distance between the applicator roll and the backup roll becomes constant. , It is possible to apply it uniformly to the fabric without the problem of uneven coating amount such as the amount of application to the fabric that tends to occur with the commonly used drive type kiss coater on the left and right, or the central part is small. it can.

Examples of the surface morphology of the supply roll and the applicator roll include a plain roll, a satin roll, a bias roll, a stripe roll, and the like. A combination of these is used for processing, but a convex portion on the surface side in contact with the skin is used. In order to uniformly apply the water-repellent treatment liquid only to, the processing is preferably performed by using a striping roll as the supply roll and a satin roll as the applicator roll.

When the kiss coater is used, the cloth can be processed even in a wet state. Since the water-repellent treatment liquid used in the present invention has a viscosity of 400 cp or less, it is not necessary to use a sizing agent which has conventionally been required to be removed in a subsequent step, and the water-repellent treatment liquid has a low viscosity. Since the water treatment liquid flows evenly and the height of the water repellent treatment liquid surface can be kept constant, the amount of coating on the fabric may be different on the left and right, or the central part may be different or the central part may be less. Even if the type of cloth, the woven / knitted structure, the basis weight, and the thickness are different, it is possible to uniformly impart water repellency only to the convex portions with a single water repellent treatment liquid without the problem that the work amount becomes uneven.

[0017]

When the water repellent treatment liquid has a viscosity of 400 cp or less and is subjected to water repellent treatment using a kiss coater, a small amount of the liquid that has been transferred to the applicator roll through the supply roll is given a uniform water repellent treatment. It becomes possible to easily impart water repellency only to the convex portion on the surface side in contact with the skin without adjusting the viscosity with a sizing agent so as to impart water repellency only to the surface side in contact with the skin.

[0018]

EXAMPLES The present invention will be specifically described below with reference to examples. The measurement and evaluation of the performance of the cloth in the examples were carried out by the following methods. 1) Frictional resistance The roller 7 was rotated as shown in FIG. 2 for the purpose of quantifying the sticky feeling of the fabric on the skin, and the frictional resistance with the sample 8 was measured. Specifically, cut Sample 8 into strips of 20 cm in width and 5 cm in width, absorb water so that the moisture contents are 30%, 50%, and 100%, and make the water-repellent surface of Sample 8 in an atmosphere of 25 ° C. and 65% RH. The frictional resistance force (g) between the sample 8 and the roller 7 was measured so as to be in contact with the roller 7. In this measurement, the roller 7 is made of stainless steel and has a diameter of 5 cm.
The sample 8 is applied to the roller 7 and pulled from one end in the direction of the arrow in FIG. 2 with a load of 30 g. The frictional resistance (g) is very well correlated with the feeling of stickiness to the skin of clothes, which is the main cause of discomfort due to sweating when wearing clothes, assuming natural contact of the cloth with the skin. Yes, the frictional resistance increases in proportion to the feeling of stickiness. 2) Water absorption The water absorption of the fabric was measured by the dropping method (JIS L-1096).

Example 1 100% cotton, 30th count, scouring with a basis weight of 150 g / m ² ,
Using a bleached Tenjiku knit, using a magnetic type two roll squeeze kiss coater manufactured by Johannes Chimmer, a magnetic force of 80%, a supply roll is a striped roll, and an applicator roll is a satin roll. The water-repellent treatment liquid shown in (3) was attached only to the convex portions on the back surface of the sample, and dried by a tenter at 160 ° C. for 1 minute and heat-treated. Prescription 1 Asahi Guard AG 310 30 g / liter (Fluorine-based water repellent manufactured by Meisei Chemical Co., Ltd.)

Comparative Example 1 The same scouring and bleaching Tenjiku knit as in Example 1 was used as a sample for comparison without processing.

Comparative Example 2 Using the same scouring and bleaching Tenjiku knit as in Example 1,
Printing was carried out by adjusting the squeegee pressure and the mesh so that the water-repellent-containing paste shown in the following Formulation 2 was attached only to the convex portions of the plain knit using a rotary screen printing machine. After printing, the product was dried at 160 ° C. for 2 minutes and heat-treated, and then the glue was removed by soaping and dried at 100 ° C. for 1 minute.

The performances of Example 1 and Comparative Examples 1 and 2 were measured, and the results are shown in Table 1.

[0023]

[Table 1]

As is clear from Table 1, Example 1 has better water absorption than Comparative Examples 1 and 2, the frictional resistance does not increase much even when the sample is in a wet state, and the skin of the fabric is sweated. It can be seen that the feeling of stickiness is small.

[0025]

As described above, according to the present invention, when a kiss coater is used, it is not necessary to adjust the viscosity or use a specific printing pattern so as to impart water repellency only to the convex portion on the surface side in contact with the skin.
Water repellency can be easily imparted to the convex portion on the surface side that comes into contact with the skin. Further, since the drying process and the soaping process can be omitted, the processing process can be rationalized, the labor and energy can be saved, and the economical effect is great.

[Brief description of drawings]

FIG. 1 is a side view showing two magnetic type roll squeeze kiss coaters of the present invention.

FIG. 2 is a perspective view showing a method for measuring a frictional resistance force according to the present invention.

[Explanation of symbols]

 1 Supply Roll 2 Applicator Roll 3 Backup Roll 4 Cloth 5 Water Repellent Treatment Liquid Tank 6 Water Repellent Treatment Liquid 7 Roller 8 Sample

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Bunkyo Sugae 1-16 Kitamoto, Yao City, Osaka Prefecture Paris Zennes Co., Ltd.

Claims (1)

[Claims] 1. A method for processing a fabric, which comprises applying a water-repellent treatment liquid having a viscosity of 400 cp or less to a convex portion on the side in contact with the skin using a kiss coater.