JPH03876A - Knit or woven fabric having little wet feeling - Google Patents

Abstract

PURPOSE:To obtain a knit or woven fabric having a specific surfacewetting characteristic and giving little wet feeling to the skin even in profusely perspired state by forming a water-repellent part on a surface of a knit or woven fabric composed of a fiber capable of absorbing water in the fiber and/or diffusing water on the fiber surface. CONSTITUTION:A water-repellent liquid is applied to one surface of a knit or woven fabric made of a fiber capable of absorbing water and/or diffusing water on the fiber surface (preferably a hydrophilic fiber such as cotton or scaled wool) in a state to leave the untreated part in the form of a lattice (the line width is 0.1-0.5mm and the interval is 0.8-2.7mm), parallel lines (the line width is 0.2-0.6mm and the interval is 0.6-2.5mm) or a circle, etc. The average brightness of the waterrepellent surface A is >=200 (representing the amount and distribution of attached water impregnating into a hydrophobic part and free from the residual absorbed water on the waterrepellent surface). Water is absorbed by the hydrophilic part B of the obtained knit or woven fabric even in profusely perspired state and diffused to an intermediate layer and a surface layer. There is no residual water on the hydrophobic part on the reverse side of the fabric contacting with the skin and, accordingly, the fabric is free from wet feeling to the skin.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a fabric that has little wet feeling on the back side of the fabric that comes into contact with the skin even when sweating in large quantities.

(Conventional technology) Conventionally, the back side of the fabric that is uneven on the skin is knitted with hydrophobic fibers, the entire back side is subjected to Hashimoto processing, or the front and middle layers are hydrophilic and the back side is mainly water repellent and partially It has been proposed that a hydrophilic part be arranged on the back side, or that the back side is knitted with hydrophobic fibers or that the entire back side is treated with a water-reducing treatment.When you sweat in multiple layers, the back side retains sweat. The aim was to reduce confusion and avoid confusion. However, those knitted with hydrophobic fibers have the problem that sweat is diffused to the back side of the skin due to the capillary action of the fibers, so the feeling of wetness is not reduced. When the entire back surface is treated with TA water, the back surface does not absorb sweat, so sweat remains on the skin and the wet feeling does not decrease.

On the other hand, the back side is mainly water repellent and partially has a hydrophilic part, as seen in JP-A-60-9974, the size of each of the hydrophobic part and the hydrophilic part is specified, There is a method such as JP-A-60-119276 in which the area ratio of the water-repellent portion and the hydrophilic portion is defined. In the former case, sweat diffuses into the hydrophobic part by capillary action, so there is no effect of reducing wetness, and even if the hydrophobic part is made water repellent,
Since the size of the hydrophilic part is too large, it is not possible to reduce the feeling of wetness. The combination of the sizes of the aqueous parts is important; if the size of the 1B aqueous part is 3 to 10 mm, the water-repellent part is too large, so no matter how much you change the area ratio of the water-repellent part to the hydrophilic part, the hydrophilic part When is large, the area where water remains becomes large,
On the other hand, if it is small, it will not absorb water (so the wet feeling will not decrease).

(Problem to be Solved by the Invention) The feeling of wetness when sweating a lot is greatly influenced by the amount and distribution of sweat remaining on the back side of the skin.

Among the conventional methods described above, none have been proposed focusing on the amount and distribution of sweat remaining on the back side of the skin. This technology was designed to improve this problem by immediately absorbing sweat and other water from the back surface, and diffusing the absorbed water to the intermediate layer and surface layer, thereby reducing the amount of water remaining on the back surface. It is a knitted or woven fabric that effectively distributes water.

(Means for Solving the Problems) At the dawn of the present invention, a woven fabric is a knitted woven fabric mainly made of fibers that absorb water and/or diffuse water on the fiber surface. Apply 50ad of water to the surface where the part is placed, and capture the amount and distribution of water on the surface after 1 minute as an image with an infrared video camera, perform image processing, and measure the amount of water from 0 to 255. Akebono fabrics have an average luminance value of 200 or more, which is calculated by converting the luminance values to the total average value.

Here, the fabric may be any fabric as long as it is made of fibers that absorb water and/or diffuse water on the fiber surface, but preferably cotton, descaled wool,
Hydrophilic fibers such as rayon are good, and in order to give the effect of reducing gaseous sweat and the feeling of discomfort when the amount of perspiration is small, multilayer structure wires, fabrics, etc. as in Japanese Utility Model Publication No. 61-9007, It is even more desirable to use a knitted or woven fabric made of multi-layered yarn as disclosed in Japanese Patent Publication No. 1988-215831.

Further, as mentioned above, if the average luminance value of the surface on which the water-repellent portion is arranged is 200 or more, the portion made of fibers that absorbs water and/or diffuses water on the fiber surface on the surface on which the water-repellent portion is arranged The shape may be any continuous pattern such as a grid or line, or a discontinuous pattern such as a dot shape, such as a circle, square, rectangle, or oval, and the water-repellent portion may be arranged in any manner, that is, The side with a water-repellent part on one side is used on the skin side of the clothing, the hydrophilic part absorbs water such as sweat, and the hydrophilic part that is continuous with the middle layer and surface layer is used to absorb the absorbed water. It is preferable that the water be diffused into the intermediate layer and the surface layer, and that almost no water will remain on the skin-side surface where the water-repellent portion is placed.

As mentioned above, the Akebono fabric with an average luminance value of 200 or more on the surface where the water-repellent portion is placed is a portion made of fibers that absorbs and/or diffuses water on the surface where the water-repellent portion is placed. If it is in the form of a grid, its line width is 0.1 to 0.5 ml, preferably 0.2 to 0.4 ml, and 0.8 to 2.
7 mm, preferably arranged at intervals of 1.0 to 2.31 mm, and in the case of a linear shape, the line width is 0.2 to 0.6 M, preferably 0.
．． They are arranged at intervals of 3 to 0.5 mi and 0.6 to 2.5 cm, preferably 0.9 to 2.2 m, and in the case of a circular shape, the diameter is preferably 0.25 to 0.7 m. 4～
0.60 and 0.7 to 2.4am, preferably 1.0
~2. This can be obtained by placing them at intervals of I.

The water-repellent portion can be placed on one side by applying a water-repellent agent such as fluorine-based or silicon-based water repellent using a conventional method, such as screen printing, roller decontamination, knife coater, etc. . In addition, during processing, make sure that the water repellent does not penetrate into the entire thickness of the knitted fabric on the opposite side, and that the saline areas adjacent to the surface with the water repellent area on one side do not come into contact with each other. It is necessary to adjust the water-damaging agent concentration, glue viscosity, etc. The degree of penetration of the water repellent agent in the thickness direction of the knitted fabric is preferably 1/2 or less of the thickness from the side on which the water-based part is arranged on one side! 15 or less is better.

, and 2, the water-repellent part on one side absorbs water and/or the part made of fibers that diffuses on the fiber surface, the middle layer that is not treated to be water-repellent, and the surface layer that absorbs water. And/or since the part consisting of fibers that diffuses on the fiber surface is continuous, water such as sweat absorbs water on the surface where the saline part is arranged, and then diffuses into the intermediate layer and surface layer.
B Almost no water remains on the surface where the aqueous portion is placed.

The fabric of the present invention needs to have an average brightness value of 200 or more on the surface on which the water-repellent portion is arranged, and the method for determining the average brightness value is shown below.

FIG. 2 is a system diagram of an evaluation device for determining the average luminance value. The infrared light irradiates the material with infrared rays from two directions. Then, we selectively detect infrared rays of 1.45 μm, which is one of the specific absorption wavelengths of water, using a moisture filter and a coating lens, and image the distribution of water on the material surface using an infrared video camera with high sensitivity in the infrared region. Import as. Analog image information is converted into digital image information using an image processing device manufactured by Pierce, and can be input as luminance information for each pixel.

Here, the average brightness value of the surface on which the water-repellent part is arranged is calculated by applying 50 M1 of water with a micro-esonge to the surface on which the saline part is arranged (sample size 1 x 2 C1), and applying water 1 minute after application. The water distribution state on the surface is captured as an image using an infrared video camera, and the captured image is processed to detect only the areas where water is present, and the amount of water is calculated from 0 to 255 (the larger the number). As the amount of water decreases, the brightness is converted to the brightness of 258 x 129-33282 divisions). It has been confirmed that there is a high correlation (correlation coefficient 0.97) between the average g-degree value determined by this evaluation method and the wet feeling determined by the actual sensory test.

Example Wet feeling by sensory test Wet feeling 1
- As a standard sample of grade 5 (grade 5 means no wet feeling), 1.5 g/70 cl of water was added to the samples of Examples and Comparative Examples,
The grade was determined on the forearms of three subjects, and the average value was calculated.

Examples 1 to 9 and Comparative Examples 1 to 7 100% cotton 60'528G smooth knitted fabric Mercerized fried knitted fabric (unprocessed product Comparative Example 1) -S Emulun 9062 (emulsifier) 4 parts by weight, Mineral Turvea on one side (
m) 21 weight 41 parts, Rike 7/: UypGL38 (f
a water 7FJ) 15 parts by weight, water 60 parts by weight (viscosity 5500
CPS
Rotary screen (100
It was attached with a mesh (mesh), heat treated at 180°C for 45 seconds, and processed in salt water. The shape and size of the saline part and the unprocessed (wood-loving) part were obtained by changing the shape and size of the screen.

As shown in Table 1, Examples 1 to 9 all had a smaller wet feeling than Comparative Examples 1 to 7.

Example 10 and Comparative Example 8 Back layer: cotton 40°S Middle layer: polyester filament 36D/18f Surface layer: cotton/polyester 65χ/3
1a water processing was performed in the same manner as in Example 1 on the back side of a three-layer structure field (unprocessed product comparison example day) with 5X 40' S and a density ratio of the back layer and the surface layer of 2:1.

As shown in Table 2, the wettability of the Examples is smaller than that of the Comparative Examples.

Example 11 and Comparative Example 9 Inner layer is polyester staple 0.70D, middle layer is polyester staple 0.7D, polyester filament 300/18f and cotton, surface layer is multilayer structure yarn s made of cotton
A smooth knitted fabric was knitted with o's (unprocessed product comparative example 9), and on one side, 30 parts by weight of a mixture of sodium alginate and brimogum at a ratio of 2:5, 10 parts by weight of AG-310 (water medicine), A clear water processing solution consisting of 60 parts by weight of water (viscosity 600 CPS) was applied using a rotary screen (125 x 22) so that the unprocessed parts remained in a grid pattern in the bias direction.
Heat treatment was performed at 160° C. for 1 minute to perform I-water treatment. As shown in Table 3, the wettability of the Examples is smaller than that of the Comparative Examples, and the shape of the water-repellent portions of the hydrophilic portions having a lattice shape is square.

(Effects of the Invention) The textiles and textiles of the present invention are mainly composed of fibers that absorb water and/or diffuse water on the fiber surface, and have 4 aqueous portions of appropriate size arranged on one side, resulting in 19 aqueous portions. Even if water such as sweat is applied to the surface on which the material is disposed, the hydrophilic portion quickly absorbs the water, and the absorbed water is transferred or diffused to the continuous intermediate layer and surface layer. Therefore, less water remains on the surface where the aqueous portion is placed.

By making clothes with the knitted fabric of the present invention with the surface on which the aqueous part is placed facing the skin, it is possible to obtain clothes that do not feel wet even when sweating a lot. , woven fabrics are ideal for clothing that is worn when sweating a lot (e.g. sportswear, work clothes under underwear, etc.); If so, there are no restrictions on its uses.

[Brief explanation of drawings]

Figure 1 is an illustration of the water-repellent surface of Example 1 of the present invention.
2 is a schematic diagram of an evaluation system for measuring the average brightness value, and FIG. 3 is an example of a cross section of the knitted fabric according to the present invention. A: 1B Aqueous portion B: Hydrophilic portion C: Infrared light D: Sample E: Moisture filter F: Coating lens G: Infrared video camera H: Image analysis system Video J: Monitor: Display: Computer M: Printer

Claims (1)

[Scope of Claims] 1) A knitted or woven fabric made of fibers that mainly absorb water and/or diffuse water on the fiber surface, with a water-repellent portion disposed on one side, and the average luminance value of said one side being 200 or more. Knitting and textiles featuring. Here, the average brightness value of the surface on which the water-repellent portion is placed is determined by applying 50 ml of water to the surface on which the water-repellent portion is placed, and measuring the amount and distribution of water on the water-applied surface after 1 minute using an infrared video camera. Capture it as an image, perform image processing, and adjust the amount of water from 0 to 255.
It is calculated by converting the brightness to the total average. 2) The portion made of fibers that absorbs water and/or diffuses water on the fiber surface on the surface where the water-repellent portion is arranged is in a lattice shape, and the line width is 0.1 to 0.5 mm and 0.8 to 2 .7m
The knitted or woven fabric according to claim 1, wherein the knitted or woven fabric is arranged at intervals of m. 3) The part made of fibers that absorbs water and/or diffuses water on the fiber surface on the surface where the water-repellent part is arranged is linear, and the width of the line is 0.2 to 0.6 mm, and .5mm
The knitted or woven fabric according to claim 1, wherein the knitted or woven fabric is arranged at intervals of . 4) The portion made of fibers that absorbs water and/or diffuses water on the fiber surface on the surface where the water-repellent portion is arranged is circular, with a diameter of 0.25 to 0.7 mm, and a diameter of 0.7 to 2 mm. 4mm
The knitted or woven fabric according to claim 1, wherein the knitted or woven fabric is arranged at intervals of .