JPH1025642A - Cloth having multi-layered structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cloth having a multi-layered structure, capable of preventing a cold feeling and an uncomfortable feeling, excellent in water dissipating property, quick drying property and wet returning resistance, and useful for various cloths such as a sporting or an inner cloth by constructing a surface with a hydrophobic fiber and a part of back, etc., with Lyocell(R) fiber. SOLUTION: This cloth having a multi-layered structure having two layers or more, consists of a surface cloth constituted by a hydrophobic fiber such as a polyamide, a polyester and an acrylic fiber and at least a part of a back cloth and/or an intermediate layer with Lyocell(R) fiber obtained by dissolving a natural cellulose with an organic solvent such as a tert-amine-N-oxide, etc., and spinning the solution.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variety of clothing fabrics such as sports, innerwear and the like having water diffusibility, quick-drying properties and anti-wetting properties.

[0002]

2. Description of the Related Art Conventionally, when sweat is sweated, the cloth forming the clothing such as sports and innerwear has insufficient diffusion of sweat or the sweat smoothly moves from the skin side to the opposite side of the cloth. Otherwise, the skin side of the fabric may become wet and sticky, and may have a feeling of discomfort or cold even after sweating due to poor dryness. Heretofore, there has been known a fabric in which a hydrophilic cellulose fiber and a hydrophobic synthetic fiber are combined, and this problem is ameliorated by utilizing the sweat-absorbing action of the cellulose fiber and the diffusion and quick-drying action of the synthetic fiber.

[0003] As a method, one side of a fabric is formed of a hydrophobic synthetic fiber such as polyester, and the other side is formed of a hydrophilic fiber such as cotton or a copper ammonia rayon or a viscose rayon. By using the surface on the skin side, moisture absorption and water absorption are improved to prevent stuffiness and stickiness, while at the same time using the capillary phenomenon of synthetic fibers to increase water diffusion and improve quick drying. There is something. Alternatively, by using the synthetic fiber surface of the knitted fabric as the skin side, the sweat is transferred to the hydrophilic fiber side of one surface by passing through the synthetic fiber, and the wet back to the skin side is prevented to prevent a sticky feeling. There is a fabric.

[0004] Furthermore, a three-layer structure fabric of synthetic fibers on the front and back surfaces and hydrophilic fibers on the intermediate layer is used, and moisture on the skin surface is transferred to the hydrophilic fibers of the intermediate layer by using a synthetic fiber capillary. It is known that water is prevented from returning to the skin, and that the moisture is diffused on the surface of the synthetic fiber opposite to the skin to improve the drying property. However, in the case of conventionally used cellulose fibers such as cotton, cuprammonium rayon, viscose rayon, etc., the diffusion of water is hindered because the cellulose fibers absorb water and swell, so that water is locally retained. As a result, the drying property and the property of preventing the re-wetting of water were not sufficient.

[0005] In particular, in the case of a cellulose spun yarn, the short fiber portion is bulky and has many voids, and water is stored in these voids, and at the same time, the water that is introduced by the short fibers is cut off, thereby reducing the water content. Diffusion was greatly impeded. In some cases, cellulose multifilament yarn is used.In this case, although the water diffusibility is improved as compared with the cellulose spun yarn, the cellulose multifilament yarn absorbs water and swells. However, it was difficult to completely eliminate the sticky feeling of the skin.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide various kinds of clothing fabrics such as sports, innerwear and the like, which have water diffusing properties, quick drying properties and anti-wetting properties.

[0007]

Means for Solving the Problems As a result of intensive studies, the present inventors have found that a multi-layered fabric having two or more layers, the surface of which is composed of hydrophobic fibers, and at least one of a back surface and / or an intermediate layer. It has been found that the object of the present invention is achieved by a multi-layer structure fabric whose part is composed of lyocell fiber.
Further, the present invention includes the following embodiments. The multilayer structure fabric according to claim 1, wherein the lyocell fiber occupies 20% or more of the volume ratio of the entire fabric on the back surface and / or the intermediate layer. The multilayer structure fabric according to claim 1, wherein the ratio of the hydrophobic fiber in the surface layer occupies 60% or more of the area ratio of the side surface of the fabric. The multilayer structure fabric according to claim 1, wherein the fiber surface of the hydrophobic fiber is hydrophilized.

Hereinafter, the present invention will be described in detail. The lyocell fiber in the present invention means a cellulose fiber obtained by spinning from an organic solvent. First, in the present invention, it is necessary that the surface of the multi-layer structure fabric is constituted by hydrophobic fibers. The hydrophobic fiber referred to in the present invention is a synthetic fiber such as polyamide, polyester, acryl, polyethylene, and polypropylene. The form may be any of a raw yarn and a processed yarn. Further, any of a spun yarn and a multifilament yarn may be used, and the cross-sectional shape is not particularly limited. However, a multifilament yarn is preferable in terms of water diffusibility, and the cross-sectional shape is W or C. , L,
When water is supplied from the synthetic fiber side, a shape such as Y having a larger surface area than a normal cross section, such as Y, is more preferable because the capillary suction force for diffusing water and simultaneously transmitting it to the back surface increases.

The fineness of the synthetic fiber used in the present invention is not particularly limited. However, considering that the synthetic fiber is used for clothing, the total denier is preferably about 20 d to 300 d, and the single yarn denier is preferably about 0.1 d to 10 d. It is.
In particular, in the case of a cloth for sports clothing which must be able to withstand severe conditions, 1d to 5d is more preferable, and in the case of a cloth for inner clothing in which soft touch and texture are emphasized, 0.1d to 3d are preferably used. More preferred. In the present invention, it is necessary to use the lyocell fiber for the back surface and / or at least a part of the intermediate layer.

[0010] That is, due to the excellent water absorption of the lyocell fiber, water supplied from the front surface is instantly absorbed by the back surface and / or the intermediate layer. Since the degree of swelling is lower than that of rayon etc., water is diffused over a wide area by capillary using fine voids between single fibers without absorbing water locally inside the cellulose fiber and swelling. Become. The lyocell fiber used for the back surface and / or the intermediate layer only needs to be used for at least a part of the back surface and / or the intermediate layer. For example, the lyocell fiber and the synthetic fiber are composited by air blending, composite false twist, twisted yarn, or the like. The obtained yarn may be knitted on the back surface and / or the intermediate layer, or the back surface and / or the intermediate layer may be formed by cross knitting of lyocell fiber and synthetic fiber. Therefore, it is preferable that the lyocell fiber accounts for 20% or more, and more preferably 30% or more, by volume ratio of the entire fabric on the back surface and / or the intermediate layer.

The lyocell fiber used in the present invention is a cellulose fiber obtained by dissolving cellulose in an organic solvent capable of dissolving natural cellulose to form a cellulose solution, and using this solution as a spinning solution by wet spinning or dry spinning. For example, as described in JP-B-60-28848, a solution containing a cellulose and a non-solvent such as water basically dissolved in an organic solvent of cellulose is spun in the air or in a non-precipitating medium, This is because the fiber-forming solution discharged from the spinneret is stretched at a speed higher than the feeding speed and stretched at a stretching ratio of 3 times or more.

The organic solvent at this time may be a known organic solvent, for example, any of the following amine oxides disclosed in Japanese Patent Publication No. 28848/1985, or a different kind of solvent. Good. In this case, the amine oxides used as the organic solvent include, for example,
Secondary amine-N-oxides (e.g., of trimethylamine,
Oxides of triethylamine, tripropylamine, monomethyldiethylamine, dimethylmonoethylamine, monomethyldipropylamine); oxides of N-dimethyl-, N-diethyl-, N-dipropylcyclohexylamine; oxides of pyridine; Cyclic mono (N-methylamine-N-oxide) such as methylmorpholine-N-oxide; The use of N-methylmonophorin-N-oxide is preferred.

The form of the lyocell fiber used in the present invention may be either a spun yarn or a multifilament yarn. However, the multifilament yarn which is more densely packed and does not break is more suitable for the capillary. This is preferable because the diffusivity of water utilizing the phenomenon is further improved. Furthermore, the denier of single yarn, the number of filaments, and the cross-sectional shape are not particularly limited. However, in consideration of the consumable properties as a fabric for clothing and the workability of yarn, the total denier is 20 d to 300 d.
d, the single yarn denier is preferably 0.5d to 10d. Further, a cross-sectional shape such as W, C, L, or Y having a larger surface area than a normal circle cross section is more preferable because a capillary suction force for diffusing water increases.

Further, in the case of the multifilament yarn, the yarn may be in the original yarn state, or may be subjected to false twisting or physical processing such as twisting. In particular, when false twisting is applied,
Because the crimp retention is also good, it will keep a lot of air layer,
Light weight and heat retention are also improved. When water is supplied from the hydrophobic fibers on the front surface because the surface of the multilayer structure fabric is a hydrophobic fiber and the back surface and / or the intermediate layer is a lyocell fiber, the moisture on the front surface is reduced by the back layer and / or the intermediate layer. It diffuses and migrates instantaneously into the cellulose fibers of the layer, and the moisture on the surface composed of hydrophobic fibers is extremely reduced.
The hydrophobic fiber surface of the multilayer structure fabric becomes smooth.

Further, since the lyocell fiber, which is a cellulose fiber, diffuses water and retains it in the back layer and / or the intermediate layer, water does not wet back to the hydrophobic fiber surface due to external pressure or the like. Becomes The multilayer structure cloth referred to in the present invention is a cloth having a two-layer structure, a three-layer structure or more layer structure, and any layer structure cloth having a two-layer structure or more. I do not care.

Further, the multilayer structure fabric referred to in the present invention is:
It is not necessary for the front, middle and back layers to be completely separated and independent, and they may be apparently in a layered structure, in which the fibers constituting each layer and the fibers constituting the adjacent layer They may be mixed together or may be slightly reversed. However, it is necessary that the ratio of the hydrophobic fibers in the surface layer be 60% or more, preferably 70% or more, more preferably 80% or more in terms of the area ratio of the side surface of the fabric in order to prevent rewetting.

Such a multi-layer structure fabric may be produced by any method such as a knitted fabric or a woven fabric, and is not limited to a special structure. For example, a knitted fabric such as punch roma, single bag, Milan rib , Tuck rib, back fir, single picket, double picket, etc., single warp knitted fabric such as half, back half, quins cord, sharkskin and double warp knitted fabric such as double raschel, double tricot etc. For the woven fabric, any structure may be used as long as the fabric can have a multilayer structure such as a warp double weave and a weft double weave.

Further, it is preferable that the hydrophobic fibers constituting the multi-layer structure fabric of the present invention are made hydrophilic. By making the hydrophobic fibers hydrophilic, the water absorption rate on the hydrophobic fiber surface of the multilayer structure fabric is further improved, and the moisture transfer rate and water diffusion rate to the back surface and / or the intermediate layer of the multilayer structure fabric are also improved. As a result, the water is more likely to migrate to the back surface and / or the intermediate layer side without being stagnant and to be easily diffused, so that the wet spreading, the drying property, and the anti-wetting property are improved. As a method for hydrophilizing the hydrophobic fibers constituting the multilayered fabric of the present invention, any method may be used. The hydrophilic treatment may be performed in a manner similar to that described above, or the hydrophilic treatment may be performed in a state of a multi-layered fabric, but the present invention is not limited thereto.

As the hydrophilizing agent, a known hydrophilizing agent such as a polyethylene glycol-based resin agent may be used, and the hydrophilizing treatment is performed at the recommended concentration using a recommended formulation such as immersion treatment, padding treatment, spray treatment, or the like. Just do it. In the case where the hydrophobic fiber constituting the outermost layer of the multilayered fabric of the present invention is originally hydrophilic, the surface of the fiber may be hydrophilized, but is not particularly required. In addition, the multi-layer structure fabric of the present invention may be used on either side of the front and back surfaces when used, but in the case of a product that causes a large amount of sweat when worn, the hydrophobic fiber surface on the surface is replaced with the skin surface. The product can be worn more comfortably without stickiness, and in the case of a product with a small amount of sweat when worn, the lyocell fiber surface can be worn on the skin side with a soft touch without stuffiness due to its moisture absorption .

[0020]

EXAMPLES The present invention will be described specifically with reference to Examples.
The present invention is not limited to these. The lyocell fiber used in the examples was prepared as follows. <Production of Lyocell Fiber> According to the production method described in JP-B-63-28848, pulp and an aqueous solution of N-methylmorpholine-N-oxide are put in a mixing tank and mixed under reduced pressure to obtain a cellulose concentration of 10%. A cellulose solution was prepared. The cellulose solution was subjected to air gap spinning at 124 ° C. under the conditions shown in Table 1. The spun yarn is scoured by washing with water, dried and wound up to a dry strength of 4.0 g /
d, having properties of 7.5% dry elongation and 72% secondary swelling 5
Cellulose multifilament yarns of 0 denier / 33 filaments and 75 denier / 50 filaments were obtained.
The properties of the multilayer structure fabric of the present invention were evaluated by the following evaluation methods, and the evaluation results are shown in Table 1.

<Evaluation method> Diffusivity: A water drop of 0.1 cc was placed on a glass plate, and the produced knitted fabric was placed on the water drop so that the surface faced down.
The water diffusion area (cm ² ) after one minute is calculated. Anti-wetting property: A water drop of 0.3 cc is placed on a glass plate, and the produced knitted fabric is placed on the water drop so that the surface faces down, and the knitted fabric absorbs water for 1 minute. The knitted fabric was placed on the filter paper with the surface of the knitted fabric facing down, a load of 0.5 g / cm ² was applied from above on the filter paper for 30 seconds, and the amount of water a that had returned to the filter paper was measured.
The wetting return rate is calculated as follows. Wetting return rate (%) = a / 0.3 × 100%

Drying property: 0.3 cc of water was dropped on the surface side of a 10 cm square knitted fabric, and the water content was dried by infrared irradiation at an ambient temperature of 50 ° C. using an infrared moisture meter manufactured by Kett Scientific Research Institute. Measure the time until the ground is completely dry. Wet feeling and sticky feeling: Water droplet 0.3c on glass plate
c, place a 10 cm square knitted fabric on a water drop so that the surface faces down, apply a load of 0.3 g / cm ² and allow the knitted fabric to sufficiently absorb water for 30 seconds. Each of 10 panelists is placed on the upper arm portion of the panel so as to put the water-absorbing cloth so that the surface is on the skin side, and the sensory evaluation of wet feeling and stickiness is performed. The results are evaluated as follows. Wet feeling and sticky feeling: ◎; ；: I felt wet and cold, but not sticky. ×: Felt cold and wet, and the fabric was very sticky.

Example 1 A double-sided tack knitting structure shown in FIG. 1 was produced by using a 28-gauge double circular knitting machine using a 75 denier / 24 filament polyester crimped yarn and 50 denier / 33 filament lyocell fiber. A three-layer knitted fabric in which the surface was a polyester crimped yarn, the back surface, and the intermediate layer were lyocell fibers was obtained. The knitted fabric was scoured at 100 ° C. for 20 minutes, dyed at 130 ° C. for 30 minutes, and then subjected to a hydrophilic treatment at 100 ° C. for 30 minutes using 5% owf of Takamatsu Yushi Co., Ltd. to give a basis weight of 185 g. / M ² of a three-layer knitted fabric. The knitted fabric was evaluated as described above and found that the diffusion area of water was extremely large, the moisture from the surface was instantly absorbed and diffused into the intermediate layer, the water returned to the surface was very little, and the surface had a sticky feeling. There was almost no knitted fabric. or,
The drying property was also very good.

(Example 2) Using a polyester crimped yarn of 75 denier / 24 filament and a crimped yarn of 50 denier / 33 filament lyocell fiber, 28
A double-layer gauge knitting machine was used to obtain a three-layer knitted fabric having a double-sided tack knitting structure as shown in FIG. The knitted fabric was subjected to the same scouring, dyeing, and hydrophilizing treatments as in Example 1 to obtain a three-layer knitted fabric having a basis weight of 178 g / m ² . This knitted fabric has a tendency to be bulky, and the diffusion area of water is wide as in Example 1, and the water is instantly absorbed and diffused into the intermediate layer,
The knitted fabric had very little wet return to the surface and had almost no sticky feeling. The drying property was also good.

(Example 3) Using a crimped yarn of 75 denier / 24 filament polyester and a crimped yarn of 50 denier / 33 filament lyocell fiber, 28
With a single bag knitting structure shown in FIG.
A double-layer knitted fabric was obtained, in which the front surface was a polyester crimped yarn and the back surface was a lyocell fiber crimped yarn. The knitted fabric was subjected to the same scouring, dyeing, and hydrophilizing treatments as in Example 1 to obtain a basis weight of 16%.
A double-layer knitted fabric of 8 g / m ² was obtained. This knitted fabric was a knitted fabric in which the water absorbed on the front surface was quickly transferred to the back surface and was diffused over a wide area, and the water returned to the front surface was very little and there was almost no sticky feeling. The drying property was also good.

(Comparative Example 1) Using a 28 gauge double circular knitting machine using a 75 denier / 50 filament lyocell fiber and a 50 denier / 24 filament polyester crimped yarn with a double-sided tack knitting structure shown in FIG. A three-layer knitted fabric was obtained in which the front and back surfaces were lyocell fibers and the intermediate layer was a polyester crimped yarn. The knitted fabric was subjected to the same scouring, dyeing, and hydrophilizing treatments as in Example 1 to obtain a basis weight of 180 g / m ^2.
Was obtained. In the knitted fabric, the water absorbed on the surface was hardly transferred to the intermediate layer and the back surface, but was diffused on the surface, and the surface had a very sticky feeling.

(Comparative Example 2) A 75 denier / 24 filament polyester crimped yarn and a 50 denier / 30 filament copper-ammonia rayon fiber were used.
With an 8-gauge double circular knitting machine, a three-layer knitted fabric having a polyester crimped yarn on the front and back surfaces and a copper-ammonia rayon fiber as an intermediate layer was obtained from the double-sided tack knitting structure shown in FIG. The knitted fabric was subjected to the same scouring, dyeing and hydrophilizing treatments as in Example 1 to obtain a three-layer knitted fabric having a basis weight of 187 g / m ² .
In this knitted fabric, the moisture from the surface is instantly absorbed by the intermediate layer, but the diffusivity in the intermediate layer is poor, there is some return of water to the surface, and the knitted fabric feels somewhat cold. Met. Also, the drying property was slightly inferior.

(Comparative Example 3) Using 75 denier / 24 filament polyester crimped yarn and 50 denier / 30 filament copper ammonia method rayon fiber,
Using an 8-gauge double circular knitting machine, a double-layer knitted fabric having a polyester crimped yarn on the surface and a copper ammonia rayon fiber on the back was obtained according to the single-bag knitting structure shown in FIG. The knitted fabric was subjected to the same scouring, dyeing, and hydrophilizing treatments as in Example 1 to obtain a double-layered knitted fabric having a basis weight of 165 g / m ² . In this knitted fabric, the water absorbed on the front surface is instantaneously transferred to the back surface, but the diffusion on the back surface is small, so that the knitted fabric has a sticky surface.

(Comparative Example 4) Using a polyester denatured yarn of 75 denier / 24 filaments and a cotton yarn of No. 60 single yarn with a 28-gauge double circular knitting machine and a single bag knitting structure shown in FIG. A double-layer knitted fabric in which the cotton yarn and the back surface are polyester crimped yarns was obtained. The knitted fabric was subjected to the same scouring, dyeing, and hydrophilizing treatments as in Example 1 to give a basis weight of 178 g /
As a result, a double-layer knitted fabric of m ² was obtained. In this knitted fabric, almost all the water absorbed on the front surface was transferred to the back surface, but the diffusion on the back surface was very small, and the wet back to the front surface was very sticky.

[0030]

[Table 1]

[0031]

As described above, in the multi-layered fabric of the present invention, the moisture supplied to the surface of the multi-layered fabric allows the water to move quickly to the back surface and / or the intermediate layer, and to diffuse on the back surface and / or the intermediate layer. Water is less likely to wet back to the surface due to external pressure, etc., and the surface becomes sticky and comfortable even when sweating a small amount, as well as when sweating a large amount, and has excellent dryness The feeling of coldness and discomfort during and after wearing can also be prevented.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a typical example of a layer configuration of a multilayer structure fabric of the present invention.

Claims (1)

[Claims] Claims: 1. A multi-layered fabric having two or more layers, wherein the surface is composed of hydrophobic fibers, and the back surface and / or at least a part of the intermediate layer is composed of lyocell fibers. Structural fabric.