JP3288155B2 - Fabric and processing method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fabric having an effect of absorbing and diffusing water and a method of processing the same.

[0002]

2. Description of the Related Art Conventional processing methods of this kind include, for example, Japanese Patent Application Laid-Open No. Sho 56-144272 and Japanese Utility Model Application Laid-Open No.
No. 95, Japanese Patent Publication No. 1-53394, and the like disclose a method of processing a water-absorbing / diverging cloth in which one side of the cloth has water repellency, and this processed cloth usually has a water-repellent surface in contact with the skin side. When sweating, the sweat quickly moves from the water-repellent portion to the water-absorbing portion, so that even when the fabric is wet with sweat, the feeling of stickiness to the skin is small.

[0003] However, in the fabric processed by the conventional method disclosed in the above-mentioned publication, particularly in the case of using a cellulosic fiber, when the fabric shrinks due to washing, the yarn rebounds, and the water-repellent portion of the yarn repels. There is a problem that the area of the water-repellent portion that is hidden and in contact with the skin is reduced, and that when the fabric is wet with sweat, the feeling of stickiness to the skin is increased as compared with before washing.

[0004] In addition to the above-mentioned prior art, a double knitted fabric is known as a water-absorbing / dispersing fabric depending on the structure. For example, a fabric using cellulosic fibers for both the front and back yarns has a good moisture absorption property and thus has a humid feeling. It absorbs sweat well when sweating, but its ability to transfer the absorbed sweat from the back to the front surface is low. There is a problem that it is easy.

[0005] Double knitted fabrics using synthetic fibers for both the front and back yarns have a low hygroscopicity, so that there is a problem that water vapor from the skin is hardly absorbed, and the inside of the garment becomes stuffy and the discomfort is large.
In addition, using cellulosic fiber for the front yarn and synthetic fiber for the back yarn,
There is also a double knitted fabric that attempts to transfer sweat from the back surface to the front surface by utilizing the difference in water absorption, but there is a problem that the synthetic fiber is used on the back surface (skin side), so the moisture absorption is low and the feeling of stuffiness is large. .

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to solve such a problem and to improve the washing durability of a fabric having a water absorbing / diverging effect.

[0007]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies in order to solve the above-mentioned problems. As a result, if a water-repellent treatment and a resin processing are performed on a double knitted fabric made of cellulosic fibers, etc. The present inventors have found the fact that the water absorption / dispersion effect can be maintained for a long period of time, and have reached the present invention. That is, the first invention of the present application has a gist of a cloth, which is made of a cellulosic fiber, all parts of which are cross-linked with a resin, and which has a water repellency imparted to a convex portion on a surface side in contact with the skin. Further, the second invention of the present application is that the entire portion of the double knitted fabric knitted by separately configuring the stitches of the front surface and the back surface using a yarn made of a cellulosic fiber is cross-linked with a resin, and The gist of the present invention is to provide a cloth characterized in that water repellency is imparted to a convex portion on a surface side in contact with the skin. Further, the third invention of the present application is a step of resin-working a cloth made of a cellulosic fiber to impart morphological stability and a diffusibility of water to the yarn, and performing a water-repellent treatment on the convex portion on the side in contact with the skin. SUMMARY OF THE INVENTION A gist of the present invention is a method of fabric processing, comprising:

Hereinafter, the present invention will be described in detail. The cellulosic fiber fabric used in the present invention is a woven fabric or a knitted fabric mainly using natural fibers such as cotton and hemp, and regenerated fibers such as viscose rayon, and the mixing ratio of these natural fibers and regenerated fibers is 50. %, And of course, these natural fibers and regenerated fibers may be 100%.

The double knitted fabric used in the present invention can be produced by a normal circular knitting machine, and is knitted by supplying a front yarn to an upper pot and a back yarn to a lower pot. So that
The front and back are joined at a required place by an appropriate method.

As a bonding method, there is a method in which a yarn knitting on one surface is entangled with a yarn on the other surface, or another yarn is knitted on the front and back surfaces. FIG. FIG. 2 shows an example of a double knitted fabric in which another yarn is knitted on both sides.

FIG. 1 shows a case where the front knitted fabric 3 and the back knitted fabric 4 are knitted by the front yarn 1 and the back yarn 2, respectively, and at least two yarns 2a and 2b are used for the back yarn 2, One of them
Only the line yarn 2b shows a double knitted fabric in which a front stitch is formed together with the front yarn 1 and the front and back are joined.

FIG. 2 shows a double knitted fabric in which the front knitted fabric 7 and the back knitted fabric 8 are knitted with the front yarn 5 and the back yarn 6 and spelled out with the binding yarn 9 thinner than the front yarn 5 and the back yarn 6. Indicates a knitted fabric. Examples of the resin processing agent used in the present invention include formalin resin, urea-formalin resin, glyoxal resin, melamine resin, epoxy resin, polyamide resin, and the like. Processed into fabric such as heavy knitted fabric.

Examples of the water repellent used in the present invention include fluorine-based, silicone-based, paraffin-based, ethylene urea-based, and fatty acid-based water repellents. It is preferable to use a system water repellent. Water repellent processing can be performed using any one-side processing machine such as a screen printing machine, roller printing machine, foam processing machine, spray processing machine, coating processing machine, etc., but only on the convex part on the surface side in contact with the skin To impart water repellency, it is preferable to use a coating machine.

By the way, in the processing method of the present invention, whichever of the resin processing step and the water-repellent processing step may be performed first.

[0015]

As described above, when water repellent treatment and resin processing are performed on a fabric such as a double knitted fabric made of cellulosic fibers, the fiber molecules are cross-linked to control the degree of freedom of the fiber molecules themselves.
The morphological stability of the yarn is improved, and when the fabric shrinks during washing, it is possible to prevent the yarn from returning due to the elimination of the torque of the yarn. By preventing the yarn from returning, the water-repellent portion becomes inside the fabric due to shrinkage due to washing. It is possible to improve the washing durability of a fabric having a water absorbing / diverging effect without reducing the area of the water repellent portion that is hidden and in contact with the skin.

In the case of the double knitted fabric, since the yarns made of cellulose fibers are used on both sides, the yarns are excellent in hygroscopicity and water absorption, and the sweat absorbed by the processing method of the present invention is applied from the back surface to the front surface. The ability to transfer is provided, so that even when sweating, the feeling of stickiness and clinging of the skin is small, and the effect of water absorption and diffusion can be further enhanced, and the same comfortable feeling as before washing is maintained for a long period of time be able to.

Further, by giving the cloth a diffusibility of moisture by resin processing, the feeling of wearing comfort is further improved.

[0018]

EXAMPLES Hereinafter, the present invention will be described in detail with reference to examples. Measurement and evaluation of the performance of the fabric in the examples were performed by the following methods. 1) Friction resistance The friction resistance with the sample 12 was measured by rotating the roller 11 as shown in FIG. For details, use a single knitted fabric as a sample,
This sample was cut into strips having a length of 20 cm and a length of 5 cm, and water was absorbed so that the water content was 30%, 50%, and 100%, respectively.
The frictional resistance (g) between the sample 12 and the roller 11 was measured in an atmosphere of 25 ° C. and 65% RH such that the water-repellent surface of the sample 12 was in contact with the roller 11. As another sample, a double-knitted fabric was used. This sample was cut into a strip having a length of 20 cm and a length of 5 cm, and was allowed to absorb water so that the water content became 50%.
The water-repellent surface of Sample 12 is a roller in an atmosphere at 65 ° C and 65% RH.
11, the frictional resistance (g) between the sample 12 and the roller 11 was measured. In this measurement, the roller 11 was made of stainless steel and had a diameter of 5 cm, and the sample 12 was hung on the roller 11 and pulled from one end by a load of 30 g. The method of measuring the frictional resistance is based on the assumption of natural contact of the fabric with the skin, and is very well correlated with the feeling of stickiness to the clothes, which is the main cause of discomfort due to sweating when wearing the clothes. The frictional resistance increases in proportion to the tackiness. 2) Shrinkage The washing shrinkage was measured according to JIS L-0217 (103 method, 10 washing screen drying).

Example 1 100% cotton, 30 count, scouring with a basis weight of 150 g / m ² ,
The bleached sheet knit was used, immersed in an aqueous solution shown in Formula 1 below, squeezed with a mangle at a squeezing rate of 90%, dried at 160 ° C. for 2 minutes by a tenter, and heat-treated.

Formulation 1 Sumitex Resin M-3 30 g / liter (melamine resin manufactured by Sumitomo Chemical Co., Ltd.) Sumitex Accelerator ACX 3
g / liter (organic amine catalyst manufactured by Sumitomo Chemical Co., Ltd.) Saphanol RX-100 10 g / liter (softening agent manufactured by Sanyo Chemical Co., Ltd.) It was adhered only to the convex portion on the back surface, dried at 160 ° C. for 1 minute by a tenter, and heat-treated to obtain a work cloth of the present invention.

Formulation 2 Asahigard AG 310 50 g / l (fluorine water repellent manufactured by Meisei Chemical Co., Ltd.)

Comparative Example 1 A scoured and bleached sheet knit was used as a sample for comparison without processing.

COMPARATIVE EXAMPLE 2 In Example 1, Formulation 1 was converted from Sumitex Resi
n M-3 and Sumitex Accelarat
A sample for comparison was obtained in exactly the same manner as in Example 1 except for or ACX.

The frictional resistance (g) and the shrinkage (%) of Example 1 and Comparative Examples 1 and 2 were measured, and the results are shown in Table 1.

[0025]

[Table 1]

As is evident from Table 1, before washing, in Example 1 and Comparative Example 2, the increase in frictional resistance was small even when the sample was wet compared to Comparative Example 1 (unprocessed cloth), and even when sweating. It can be seen that the fabric is less sticky to the skin, but after washing, the friction resistance of Comparative Example 2 is higher than that before washing, and when sweating, the user feels more sticky than before washing and feels uncomfortable. On the other hand, although the feeling of comfort is obtained, in Example 1, the frictional resistance does not increase, and it can be seen that the same comfortable feeling of wearing as before washing can be obtained.

Further, it can be seen that Example 1 has a smaller washing shrinkage ratio than Comparative Examples 1 and 2, and the yarn has good morphological stability.

EXAMPLE 2 Using a double-sided circular knitting machine having a kettle diameter of 30 inches and a gauge of 28 gauge, based on FIG. 1, cotton yarn 40 was used for the front yarn 1, and cotton yarn 2a and 2b for the back yarn 2 were used. Refining and bleaching the double knitted fabric knitted with the 80th yarn of No. 1, immersed in the aqueous solution shown in the above formula 1, squeezed with a mangle at a squeezing rate of 90%, and then with a tenter at 160 ° C. for 2 minutes Drying and heat treatment were performed.

Next, the water-repellent treatment liquid shown in the above formula 2 was adhered only to the convex portion on the back surface of the sample by a coating machine, dried at 160 ° C. for 1 minute by a tenter, and heat-treated.

Comparative Example 3 A double knitted fabric that had been refined and bleached was unprocessed and used as a sample for comparison.

Comparative Example 4 In Example 2, Sumitex Resi
n M-3 and Sumitex Accelarat
or A sample for comparison was obtained in exactly the same manner as in Example 2 except for ACX.

The frictional resistance (g) and shrinkage (%) of Example 2 and Comparative Examples 3 and 4 were measured, and the results are shown in Table 2.

[0033]

[Table 2]

As is clear from Table 2, before washing, both of Example 2 and Comparative Example 4 showed less increase in frictional resistance even when the sample was wet, and even when sweating, as compared with Comparative Example 3 (unprocessed). It can be seen that the knitted fabric feels less sticky to the skin, but after washing, the frictional resistance of Comparative Example 4 was increased compared to that before washing, and when sweating, the sticky feeling was felt more than before washing, and discomfort was felt. It can be seen that in Example 2, there was no increase in frictional resistance, and the same comfortable feeling as before washing was obtained.

Further, it can be seen that Example 2 has a smaller washing shrinkage ratio than Comparative Examples 3 and 4, and has good morphological stability of the yarn.

Example 3 Using a double-sided circular knitting machine having a kettle diameter of 30 inches and 28 gauge, the front yarn 5 and the back yarn 6 were made of cotton 40, the binding yarn 9 was made of ester filament 150 denier based on FIG. The double knitted fabric knitted using the yarn is refined and bleached, immersed in the aqueous solution shown in the above formula 1, squeezed with a mangle at a squeezing rate of 90%, dried by a tenter at 160 ° C. for 2 minutes, and heat-treated. Done.

Next, the water-repellent treatment liquid shown in the above Formulation 2 was applied only to the convex portion on the back surface of the sample by a coating machine, dried at 160 ° C. for 1 minute by a tenter, and heat-treated.

Comparative Example 5 A double knit fabric that had been refined and bleached was unprocessed and used as a comparative sample.

Comparative Example 6 In Example 3, Sumitex Resi
n M-3 and Sumitex Accelarat
or A sample for comparison was obtained in exactly the same manner as in Example 3 except for ACX.

The frictional resistance (g) and shrinkage (%) of Example 3 and the comparative sample were measured, and the results are shown in Table 3.

[0041]

[Table 3]

As is clear from Table 3, before washing, in Example 3 and Comparative Example 6, the increase in frictional resistance was small even when the sample was wet compared to Comparative Example 5 (unprocessed). It can be seen that the knitted fabric feels less sticky to the skin, but after washing, the friction resistance of Comparative Example 6 was increased compared to that before washing, and when sweating, the sticky feeling was felt as compared to before washing, which was unpleasant. In contrast to the feeling of comfort, in Example 3, there is no increase in frictional resistance, and it can be seen that the same comfortable feeling of comfort as before washing can be obtained. In addition, it can be seen that Example 3 has a smaller washing shrinkage ratio than Comparative Examples 5 and 6, and that the yarn has good morphological stability.

[0043]

As described above, according to the present invention, when water-repellent treatment and resin processing are performed on a fabric such as a double knitted fabric made of cellulosic fibers, the fiber molecules are cross-linked to reduce the degree of freedom of the fiber molecules themselves. Since the control is performed, the morphological stability of the yarn is enhanced, and it is possible to prevent the yarn from returning due to the cancellation of the yarn torque when the fabric shrinks during washing. By preventing this yarn return, the water-repellent portion is hidden inside the fabric due to shrinkage due to washing as in the past, and the area of the water-repellent portion in contact with the skin is reduced, and the washing durability of the water-absorbing / diverging effect is improved. Can be improved. As a result, the water repellent effect can be maintained, and the same comfortable wearing feeling as before washing can be obtained for a long period of time. Further, by giving the fabric a diffusion property of water by the resin processing, the feeling of wearing is more comfortable. Becomes

In the case of the double knitted fabric, since the yarns made of cellulose fibers are used on both the front and back sides, the yarns are excellent in hygroscopicity and water absorption, and the sweat absorbed by the processing method of the present invention is applied from the back surface to the front surface. The ability to transfer is provided, so that even when sweating, the feeling of stickiness and clinging of the skin is small, and the effect of water absorption and diffusion can be further enhanced, and the same comfortable feeling as before washing is maintained for a long period of time be able to.

[Brief description of the drawings]

FIG. 1 is an organization diagram showing an example of a double knitted fabric according to the present invention.

FIG. 2 is a structural diagram showing another example of the double knitted fabric in the present invention.

FIG. 3 is a perspective view showing a method for measuring a frictional resistance force according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 front yarn 2 back yarn 2a yarn 2b yarn 3 front knitted fabric 4 back knitted fabric 5 front yarn 6 back yarn 7 front knitted fabric 8 back knitted fabric 9 binding yarn 11 roller 12 sample

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) D06M 15/00-15/715 D06M 23/16

Claims (3)

(57) [Claims] 1. A fabric comprising cellulose-based fibers, wherein all portions are cross-linked with a resin, and water repellency is imparted to a convex portion on a surface contacting the skin. 2. A knitted double knitted fabric formed by separately forming stitches on a front surface and a back surface using a yarn made of a cellulosic fiber, and all portions of the double knitted fabric are cross-linked with a resin, and a convex portion on a surface side in contact with the skin. A cloth characterized by imparting water repellency to the cloth. 3. A process of resin-treating a fabric made of cellulosic fiber to impart morphological stability and water diffusibility of the yarn, and a process of performing a water-repellent treatment on the convex portion on the surface in contact with the skin. A method for processing a fabric, comprising: