JPH09137380A - Knit fabric of multilayer structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain knit fabric of a multilayer structure having water repellency on one surface, water absorption on the other surface, in addition, air permeability, cushioning properties and giving light weight feeling. SOLUTION: In this knitted fabric of a multilayer structure, the outer surface layer 11 is formed with synthetic multifilament yarn of 1-5 denier filament fineness and of 30-150 denier total fineness, the intermediate layer 12 is formed with a synthetic monofilament of 15-30 filament denier. The monofilament of the intermediate layer 12 has 3-30-fold filament fineness of the multifilament of the outer surface. In one outer layer 11, its surface is made flat and subjected to water-repelling treatment. In the other outer layer 13, its surface is made roughened and subjected to water-absorbing treatment. The air permeability is adjusted to >=100cc/sec.cm<2> , compressibility, to >=20%, and bulk density, to <=0.3g/cm<3> . The knit fabric is subjected to antimicrobial and deodorizing treatment and is made hygienic. The objective knit fabric can be suitably used in sport wears and bedding, further for medical, agricultural, forestal and packaging purposes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightweight multi-layer structure knitted fabric having excellent breathability and cushioning property, one outer surface layer having water repellency and the other outer surface layer having water absorbency. It is widely used as daily goods and industrial materials such as clothing, bedding, interiors, medical cloths, cloths for agriculture and forestry, and can be preferably used for members in contact with the body such as sportswear, seats, and linings for helmets.

[0002]

2. Description of the Related Art Heretofore, a cloth in which a front surface and a back surface of a woven or knitted fabric have different properties depending on the purpose of use has been disclosed as a base fabric for clothing materials. For example, Japanese Unexamined Patent Publication No. 56-144274 discloses a single-layer synthetic fiber cloth whose both surfaces are treated with different resins. In addition, Japanese Utility Model Publication No. 1-16782 discloses a multilayer knitted fabric for clothing in which a water-repellent treatment is applied to a skin side surface layer and a water absorption treatment is applied to the other surface layer, and an intermediate layer is formed of hydrophilic fibers. There is.

[0003]

However, since the former synthetic fiber cloth has a single-layer structure, the mutual processing interferes with each other, and there is a drawback that the intended different effects cannot be sufficiently obtained. Further, although the latter knitted fabric for clothing is rich in water absorption and the contact feeling during sweating is considerably improved,
The feeling of wearing was not always satisfactory when it was raining or during intense exercise. It is considered that this is because the air permeability is insufficient and the fabric accumulates water, which causes a sticky feeling and a decrease in cushioning property.

According to the present invention, under high humidity conditions such as intense sweating, a high degree of breathability for wicking internal moisture and an appropriate cushioning property are maintained, and one surface prevents water from entering from the outside. However, it is an object of the present invention to provide a lightweight fabric having a water absorbing effect on the other surface.

[0005]

Means for Solving the Problems The present inventor has found that the cloth must have a certain thickness in order to stably maintain the desired multifunctionality for a long period of time, and the surface and inner surface of the cloth must have a certain thickness. As a result of earnestly researching and finding that the structures should be formed differently optimally, the present invention has been achieved.

[0006] That is, the present invention is, in order to solve the above problems, a knitted fabric having a multi-layer structure consisting of an outer surface layer and a back surface and a middle layer, and the outer surface layer is mainly composed of single yarn fineness 1 to 5. It is made of synthetic fiber multifilament with denier and total fineness of 30 to 150 denier, and the main component of the intermediate layer is single yarn fineness 1
5 to 30 denier synthetic fiber monofilament, the monofilament fineness of the intermediate layer monofilament is 3 to 30 times the single filament fineness of the multifilament of the outer surface layer, one outer surface layer is water repellent, A multilayer structure knitted fabric having a water-absorption process on the other outer layer is provided.

In such a multi-layered knitted fabric, when the surface of the outer surface layer subjected to the water repellent treatment has a flat structure and the surface of the outer surface layer subjected to the water absorption treatment has a concavo-convex structure, a high water repellent property is obtained. Water and water absorption can be expected. Further, from the viewpoint of breathability, cushioning property and lightweight feeling, it is preferable that the breathability of the knitted fabric is at least 100 cc / sec · cm ² , the compressibility is at least 20% and the bulk specific gravity does not exceed 0.3 g / cm ^3. . Furthermore, part or all of the knitted fabric
It is sanitary when it has antibacterial and deodorant properties and has antibacterial and deodorant properties. In the present invention, the main body means that it does not prevent braiding a yarn forming an intermediate layer in a part of the outer surface layer.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, in order to stably impart the desired multi-functionality, the basic structure of the cloth is a multi-layer structure knitted fabric. That is, the multi-layered knitted fabric according to the present invention is a multi-layered knitted fabric composed of an outer layer of front and back and an intermediate layer, and the synthetic fiber monofilament forming the main body of the intermediate layer forms the main body of the outer layer. The multi-layered knitted fabric has a single yarn fineness 3 to 30 times that of the synthetic fiber multifilament, and has at least one outer surface layer subjected to water repellent treatment and the other subjected to water absorption treatment.

For the multilayer structure knitted fabric of the present invention, synthetic fiber filaments having relatively low hygroscopicity such as polyester and polyamide are used. This is because it is easy for the cloth to have sufficient air permeability without causing excessive water retention, and to select a fineness to give an appropriate cushioning property. Natural fibers such as cotton, hemp, and hair, and cellulosic fibers accumulate moisture, and spun yarns have a basis weight and tend to fluff, which impairs breathability and lightness.

When a multifilament having a single yarn fineness of 1 to 5 denier and a total fineness of 30 to 150 denier is used for the outer surface layer, the texture of the surface becomes soft and the surface processing becomes easy. If the single-filament fineness of the multifilament is less than 1 denier, single-filament breakage occurs, and the water repellency and water absorption tend to decrease. On the other hand, if it exceeds 5 denier, the texture tends to be coarse and hard. If the total fineness is less than 30 denier, the cover factor tends to be low, and the strength of the fabric, and consequently the water repellency and water absorption, will tend to be low. Sex decreases.

The intermediate layer is formed of a monofilament having a single yarn fineness of 15 to 30 denier, preferably 20 to 25 denier. If the monofilament fineness of the monofilament is less than 15 denier, the cushioning property becomes poor. Meanwhile, 3
If it exceeds 0 denier, the flexibility of the knitted fabric may be impaired. Furthermore, the monofilament fineness of the intermediate layer monofilament is
It is in the range of 3 to 30 times, preferably 5 to 15 times, the single yarn fineness of the multifilament of at least one outer surface layer, from the viewpoint of cushioning property and flexibility of the knitted fabric. It is more preferable.

In the multi-layered knitted fabric according to the present invention, one outer surface layer is subjected to water repellent treatment and the other outer surface layer is subjected to water absorption treatment. Further, different properties such as antifouling property and antistatic property may be imparted to each of the outer surface layers depending on the intended use. The water-repellent processing is performed by a processing method capable of selectively applying a general water-repellent resin such as a fluororesin, a silicon-based resin, or a wax-based resin to one surface, such as a printing method or a spraying method. The other outer surface layer is subjected to water absorption processing using a water absorbing agent such as polyethylene glycol or its derivative. The type and concentration of the processing agent used for the water repellent treatment or the water absorbing treatment may be determined according to the required water repellent / water absorbing performance. Water repellency is JI
It is measured by S L 1092 (spray method), and preferably 90 points or more for the original cloth, 70 points or more after 5 times of washing, and more preferably 80 points or more after 5 times of washing to prevent strike-through. Water absorption is JIS L 1096
It is measured by (dropping method) and is preferably 10 seconds or less for the original cloth and 30 seconds or less after 5 times of washing, more preferably 5 seconds or less for the original cloth and 10 seconds or less after 5 times of washing.

In the multi-layer structure knitted fabric of the present invention, it is preferable that the surface of the outer surface layer subjected to the water repellent treatment has a flat structure and the surface of the outer surface layer subjected to the water absorption treatment has an uneven structure. On the surface of the flat structure, the water-repellent agent does not penetrate too much into the intermediate layer, and on the surface of the uneven structure, the contact area becomes small and a dry feel can be obtained. The surface of the flat structure is formed by, for example, flat knitting, and the surface of the uneven structure is, for example, mesh knitting,
It can be formed by a needle punching structure or a tuck knit. FIG.
FIG. 3 is a schematic cross-sectional view of a multi-layer structure knitted fabric having one surface having an uneven structure and the other surface having a flat structure.

The multi-layered knitted fabric of the present invention has a breathability of 100 cc / sec · cm ² or more and a compressibility of 20 as a whole.
% Or more, and it is preferable to knit so that the bulk specific gravity is 0.3 g / cm ³ or less. Such a knitted fabric is not sticky even under high humidity, has excellent quick-drying properties, has appropriate elasticity, and is lightweight. If used as a material for clothing such as sportswear and hats, it can be worn comfortably with a dry feel even when it is raining or exercising, and it is safe because it fits and protects the human body moderately. Breathability is JIS
According to L 1096 (Fragile method), the compression ratio is JIS
L 1096 is a value obtained by measuring 5 times each and averaging the measured values.

Furthermore, the multilayer structure knitted fabric of the present invention can be used for underwear, bedding, medical cloths such as bandages and surgical sheets, medical cloths for food packaging, etc. by subjecting a part or all of them to antibacterial deodorization. . As the antibacterial and deodorant treatment, antibacterial and deodorant properties can be imparted by post-treatment generally performed. The antibacterial property is measured by a bacteria count method (SEK standard), and the difference between the increase and decrease is preferably 1.6 or more.

The multi-layered knitted fabric of the present invention can be knitted using a knitting machine such as a double Raschel knitting machine, a double tricot knitting machine, and a circular knitting machine. After knitting, post-processing such as relaxation, scouring, water-repellent processing, and water-absorption processing can be performed by a usual method to obtain the knitted fabric according to the present invention.

[0017]

EXAMPLES The multi-layered knitted fabric having the composite function of the present invention will be described below in more detail with reference to specific examples. Example 1 First, using a Double Russell 22G knitting machine, according to the organization chart shown in FIG. 2, a knitted fabric having a three-layer structure in which one surface has a flat structure and the other surface has a mesh-like uneven structure,
22 wales / in, 48 courses / in. Polyester multifilaments having a total fineness of 75 denier and 36 filaments were used for both outer layers, and polyester monofilaments having a denier of 20 denier were used for the intermediate layer. After relaxing and refining the obtained greige by the usual method,
A commercially available fluorine-based water repellent (Asahi Guard AG710 (manufactured by Asahi Glass Co., Ltd.)) 2% owf solution was used only on the flat surface to perform water repellency treatment by curing at 170 ° C. for 1 minute. After that, SR1000 (manufactured by Takamatsu Yushi Co., Ltd.) 5
% Owf solution was used for drying and setting at 180 ° C. for 40 seconds for water absorption processing to obtain a finished knitted fabric. Table 1 shows the composition of the finished knitted fabric, and Table 2 shows the results of measurement of various physical properties of the finished knitted fabric. The finished knitted fabric had a good breathability and cushioning property, was lightweight, and was a refreshing knitted fabric with no stickiness.

Example 2 A knitted fabric obtained in the same manner as in Example 1 was subjected to SANTO N
20 parts (manufactured by Teikoku Chemical Industry Co., Ltd.), 1.025 parts of Sumitex Resin M-3 (manufactured by Sumitomo Chemical Co., Ltd.),
Sumitex Accelerator ACX (Sumitomo Chemical Co., Ltd.) 0.0025 parts, and water 100 in total
Soaked in the antibacterial processing liquid that was manufactured by adding it to each part, squeezed with a mangle so that the squeezing ratio would be 100%, then dried, and treated under curing conditions of 180 ° C x 1 minute, the antibacterial finishing Got the ground. Table 1 shows the composition of the finished knitted fabric, and Table 2 shows the results obtained by measuring various physical properties of the finished knitted fabric. The finished knitted fabric was a hygienic knitted fabric having high antibacterial properties.

Example 3 22 wales / in, in the same manner as in Example 1 except that a polyester multifilament having a total fineness of 50 denier and 18 filaments was used for the outer surface layer and a monofilament having a denier of 20 was used for the intermediate layer. It was organized with 49 courses / in. In the same manner as in Example 1, after being treated by a conventional method, water repellent finishing and water absorbing finishing were performed to obtain a finished knitted fabric.
Table 1 shows the composition of the finished knitted fabric, and Table 2 shows the results obtained by measuring various physical properties of the finished knitted fabric. The finished knitted fabric had further improved breathability and cushioning properties, and was a comfortable knitted fabric with a lightweight feel.

Comparative Example 1 Knitting was carried out in the same manner as in Example 1 using a multifilament having a total fineness of 75 denier and 72 filaments as the outer layer and a monofilament having a denier of 40 as the intermediate layer. The obtained greige was subjected to relaxation, scouring and dyeing by a conventional method to obtain a finished knitted fabric. Table 1 shows the composition of the finished knitted fabric, and Table 2 shows the results obtained by measuring various physical properties of the finished knitted fabric.
The finished knitted fabric was a heavy knitted fabric with poor breathability and cushioning properties. In addition, water repellency and water absorption were insufficient.

Comparative Example 2 Knitting was performed in the same manner as in Example 1 except that a multifilament having a total fineness of 30 denier and 12 filaments was used for the intermediate layer. Relax on the obtained raw fabric by the usual method,
Scouring and dyeing were performed to obtain a finished knitted fabric. Table 1 shows the composition of the finished knitted fabric, and Table 2 shows the results obtained by measuring various physical properties of the finished knitted fabric. The breathability and cushioning property of the finished knitted fabric were further deteriorated, and there was a heavy and sticky feeling.

[0022]

[Table 1] The outer layer of the middle layer with respect to the single yarn fineness of the outer layer of the yarn used Middle layer Single yarn fineness ratio Example 1 75D-36F 20D-1F 9.6 Example 2 75D-36F 20D- 1F 9.6 Example 3 50D-18F 20D-1F 7.2 Comparative Example 1 75D-72F 40D-1F 38.5 Comparative Example 2 75D-36F 30D-12F 1.2 D; Denier F; Filament

[0023]

[Table 2] Performance Breathability Compressibility Bulk specific gravity Water repellency Water absorbency Antibacterial cc / cm ² sec% g / cm ³ points Second Example 1 163 22 0.13 90 6.3 − Example 2 160 22 0.13 90 7.8 3.7 Example 3 175 48 0.10 90 7.3-Comparative example 1 130 11 0.15 50 180 or more-Comparative example 2 95 53 0.13 50 180 or more-

[0024]

INDUSTRIAL APPLICABILITY Since the multilayer structure knitted fabric of the present invention separately and optimally forms each structure of the outer surface layer and the intermediate layer forming the multilayer structure, it can be used under high humidity or during exercise. Also has high breathability and high cushioning properties, and is lightweight. Moreover, since one surface has high water repellency and the other surface has high water absorption, it does not become sticky even when wet with sweat or rainwater, and has a refreshing and moderate fit. It can be used for a wide range of applications such as various kinds of clothing, bedding, interiors, medical cloth, agricultural and forestry cloth, packaging cloth, and heat insulating material.

[Brief description of the drawings]

FIG. 1 is a schematic view of a multi-layered knitted fabric having a flat structure on one side and an uneven structure on the other side.

FIG. 2 is an organization chart of a three-layer structure knitted fabric of one side plain knitted fabric and one sided mesh knitted fabric.

[Explanation of symbols]

11; outer layer having a flat structure 12; intermediate layer 1
3; Outer surface layer of uneven structure L1, L2; Yarns forming mesh knit fabric L3, L4; Connecting yarns L5, L6; Yarn forming flat knit

Claims (4)

[Claims] 1. A multi-layered knitted fabric comprising front and back outer layers and an intermediate layer, wherein the outer layer is mainly composed of single yarn fineness of 1 to 5 denier and total fineness of 30.
The synthetic fiber multifilament having a denier of up to 150 denier, the main component of the intermediate layer is a synthetic fiber monofilament having a single yarn fineness of 15 to 30 denier, and the single yarn fineness of the intermediate layer monofilament is the single filament fineness of the outer layer. A multi-layered knitted fabric having a yarn fineness of 3 to 30 times, one outer surface layer having a water-repellent finish and the other outer surface layer having a water-absorption finish. 2. The surface of the outer surface layer that has been subjected to the water repellent treatment is formed in a flat structure, and the surface of the outer surface layer that has been subjected to the water absorption treatment is formed in an uneven structure.
The multi-layered knitted fabric according to item 1. 3. Breathability of at least 100 cc / sec.
The multi-layered knitted fabric according to claim 1 or 2, wherein the knitted fabric has a cm ² , a compression rate of at least 20%, and a bulk specific gravity of not more than 0.3 g / cm ³ . 4. The multilayer structure knitted fabric according to claim 1, wherein a part or all of the knitted fabric is subjected to an antibacterial deodorization treatment and has an antibacterial deodorization property.