JP2011256495A - Water absorptive fabric and clothing using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water absorptive fabric in which moisture in a liquid form is absorbed instantly without pressure and diffused and moved to the surface layer on the atmosphere side so as to keep a comfortable feeling even with profuse perspiration, and to provide clothing using the water absorptive fabric.SOLUTION: Water absorptive fabrics (5,6) of this invention are composed of a multilayer of knitted or woven fabrics including a surface layer (1) and a rear surface layer (4). The surface layer (1) is composed of hydrophilic yarn and the rear surface layer (4) is composed of hydrophobic yarn (2) and hydrophilic yarn (3a,3b). When a water drop is dropped on a rear face (4) of the fabric, the water drop is absorbed instantly, diffusing on the surface layer (1). The water absorptive fabrics are sewn on the clothing to be in direct contact with skin.

Description

  The present invention mainly relates to a water-absorbent fabric that is comfortable when sweating a lot and a garment using the same.

  Excessive sweating during hot season and exercise. When the skin surface gets wet due to a large amount of perspiration, not only discomfort such as stickiness and wetness, but also body heat dissipation is promoted, the skin temperature is lowered, and body temperature control is not preferable. Mountain climbing is an important issue related to life support. For this reason, it is required to maintain comfort by quickly absorbing and dissipating it in underwear without leaving liquid sweat on the skin surface.

  Conventionally, there has been proposed a garment in which a yarn exposed on one surface of a knitted fabric is water-repellent and a yarn exposed on the other surface is water-absorbing (Patent Document 1). Further, a circular knitted fabric is proposed in which the yarn of the surface layer of the double knitted fabric is a polyester fiber having an irregular cross section provided with a slit, and the back surface (skin surface) is constituted by a polyolefin false twisted yarn (Patent Document 2). . In addition, the present inventors have proposed a knitted fabric in which the crimp ratio and the fineness of two types of polyester fibers are changed, and the back surface (skin surface) is uneven to suppress the sticky feeling (Patent Document 3).

JP 2010-31440 A JP 2005-68602 A Japanese Patent No. 4085528

  However, the knitted fabric described in Patent Document 1 has a waterproof and moisture-permeable property and permeates gaseous sweat. However, there is a problem that liquid sweat does not permeate or move when a large amount of perspiration occurs. In addition, the knitted fabrics described in Patent Documents 2 to 3 have a problem that, when pressure is not applied, the fibers on the skin surface do not absorb water, and the pressure during normal wearing does not absorb water, leaving a sticky feeling.

  In order to solve the above-mentioned conventional problems, the present invention absorbs moisture in the liquid instantly even when no pressure is applied, and diffuses and moves to the surface layer on the atmosphere side, and a water-absorbent fabric that is comfortable even when sweating a lot. Clothing using the same is provided.

  The water-absorbent fabric of the present invention is a water-absorbent fabric composed of a multi-layered knitted or woven fabric including a surface layer and a back layer, wherein the surface layer is composed of hydrophilic yarns, and the back layer is composed of hydrophobic yarns and hydrophilic yarns. It is composed of mixed nature yarns, and when water drops are dripped from the back surface of the fabric, it absorbs water instantaneously and diffuses into the surface layer.

  The garment of the present invention is characterized in that the water-absorbent fabric is sewed on a garment in direct contact with the skin.

  The water-absorbent fabric of the present invention has the property of instantly absorbing water when it is dropped from the back surface (skin surface) of the fabric, moving to the surface layer and diffusing, so that even when sweating in a normal wearing state, A comfortable water-absorbent fabric and a garment using the same can be provided without any stickiness, wetness or coolness on the skin surface.

FIG. 1A is a schematic cross-sectional view of a water-absorbent fabric in one embodiment of the present invention, and FIG. 1B is a schematic cross-sectional view of a water-absorbent fabric in another embodiment. FIG. 2 is a knitting organization chart of the water-absorbent fabric in one embodiment of the present invention. FIG. 3A is a perspective view when a water droplet is dropped on the water-absorbent dough in one embodiment of the present invention, and FIGS. 3B and 3C are cross-sectional schematic diagrams showing a state in which the water droplet instantaneously moves and diffuses to the surface layer. .

  The water-absorbent fabric of the present invention is composed of a multi-layered knitted fabric or woven fabric including a front surface layer and a back surface layer. Specifically, the knitted fabric includes double-sided knitting (also referred to as double knitting, smooth knitting, interlock knitting, or double rib), and the woven fabric includes double knitting. The surface layer (atmosphere surface) of this water-absorbent fabric is composed of hydrophilic yarns, and the back layer (skin surface) is composed of a mixture of hydrophobic yarns and hydrophilic yarns. With this configuration, when a water droplet is dropped from the back surface of the fabric, the water is instantaneously absorbed and diffused into the surface layer. In the present invention, “instantaneous” means within 5 seconds.

  The hydrophilic yarn of the surface layer and the hydrophilic yarn of the back layer are not particularly limited, but are selected from the group consisting of nylon yarn, acetate yarn, ethylene vinyl alcohol yarn, hydrophilized polyester yarn and hydrophilized acrylic yarn. It is preferable that it is at least one. This is because the fibers constituting these yarns have a low moisture content and are easy to dry. By using a thread that is easy to dry, a large amount of liquid sweat can be absorbed into the fabric instantly, diffused into the surface layer, and dried on the atmosphere side. Therefore, the skin-side fibers can be kept in a dry and good state. The moisture content of each fiber is shown in Table 1 below. A fiber having a low moisture content generally has a high quick-drying property. Therefore, it is preferable to use a fiber having a low moisture content and having only the surface made hydrophilic.

（備考１）公定水分率は商取引の際の基準となる水分率のことである。
（備考２）標準状態の水分率とは、次の式で計算される。
水分率＝［（Ｗ−Ｗ₀）／Ｗ₀］×１００
Ｗ：標準状態（２０℃、ＲＨ６５％）における質量
Ｗ₀：２０℃、絶乾状態における質量

(Remarks 1) The official moisture content is the moisture content that serves as a standard for business transactions.
(Remark 2) The moisture content in the standard state is calculated by the following formula.
Moisture content = [(W−W ₀ ) / W ₀ ] × 100
W: Mass in standard state (20 ° C., RH 65%) W ₀ : Mass in 20 ° C., absolutely dry state

  The hydrophilic yarn of the surface layer and the hydrophilic yarn of the back layer are preferably a polyester yarn subjected to hydrophilic treatment, and more preferably a polyester false twisted crimped yarn subjected to hydrophilic treatment. False twisted crimped yarn is also called wooly yarn. Polyester yarn has a low official moisture content (0.4%), does not retain water within the fiber, is easy to dry, has a low waist, and does not lose its shape even when wet with sweat, and is a firm fiber. Moreover, when a polyester false twist crimped yarn is used, it becomes bulky, the surface area increases, and the water absorption effect can be maintained in a suitable state. Here, the hydrophilization treatment refers to (1) a treatment in which a hydrophilic substance is fixed to the fiber surface in the form of a yarn or fabric, and (2) a treatment in which the hydrophilic substance is graft-polymerized on the fiber surface.

  Although the hydrophilic treatment of the yarn or the fabric is not particularly limited, it can be performed as follows. For example, after the fabric is hydrophilically processed in a bath at the same time as the dyeing in the dyeing process, or after dyeing, the fabric is immersed in a bath containing a hydrophilic substance and then subjected to a crosslinking reaction by dry curing; Method of rolling back into cheese shape and immersing in hydrophilic substance and then cross-linking reaction by dry curing; using false twisting machine or twisting machine equipped with hydrophilic substance imparting equipment repeatedly, hydrophilic on yarn on these machines A method of applying a crosslinking reaction by dry curing after imparting a hydrophilic substance; providing a hydrophilic substance imparting equipment on a spinning / drawing machine in the raw yarn production stage, and imparting a hydrophilic substance to the yarn on these machines Thereafter, there is a method of performing a crosslinking reaction by dry curing.

  The hydrophilic substance is not particularly limited. For example, when used for hydrophilic treatment of polyester fiber, block polymerization of polyethylene glycol, terephthalic acid and polyethylene glycol, which are water-absorbing agents having affinity with polyester fiber, is performed. The resulting block copolymer can be used.

  Both the hydrophilic yarn of the surface layer and the hydrophilic yarn of the back layer may be false twisted crimped yarns. If it does in this way, it will become bulky, a surface area will increase, and a water absorption effect can be maintained in a suitable state. The hydrophobic yarn of the back layer preferably has a crimp rate of 0 to 15%. In the back layer, the crimp rate of the hydrophilic yarn is preferably higher than that of the hydrophobic yarn, more preferably 5% or more.

  The hydrophobic yarn for the back layer is not particularly limited, but is selected from polypropylene yarn, polyester water-repellent yarn, acrylic water-repellent yarn, nylon water-repellent yarn, acetate water-repellent yarn and ethylene vinyl alcohol water-repellent yarn It is preferable that it is at least one. This is because these fibers have a low official moisture content and do not absorb water. Among these, polypropylene yarn is preferable. This is because polypropylene yarn has the lowest official moisture content (0%) and does not absorb water. The yarn other than the polypropylene yarn is preferably water-repellent.

  The water repellent finish is not particularly limited, but can be performed as follows. For example, a method in which a yarn is rolled back into a cheese shape and immersed in a water repellent, followed by a cross-linking reaction by dry curing; using a false twisting machine or a twisting machine provided with a water repellent finishing equipment, A method of applying a water-repellent agent to the yarn on the machine, followed by a crosslinking reaction by dry curing; providing a device for applying the water-repellent agent on the spinning / drawing machine in the raw yarn production stage. For example, there is a method in which a water repellent finish is applied to the yarn and then subjected to a crosslinking reaction by dry curing.

  The water repellent finishing agent is not particularly limited as long as it is used as a water repellent for ordinary synthetic fibers, such as a silicone water repellent and a fluorine water repellent. Among these, from the viewpoint of durability, a fluorine-based water repellent is preferable, and a fluorine-based water repellent including a perfluoroalkyl group-containing acrylic copolymer is more preferable. From the viewpoint of durability, an aminoplast resin, a polyfunctional blocked isocyanate group-containing urethane resin, ethylene carbonate, or the like may be added to the water repellent.

  When polypropylene yarn is used as the hydrophobic yarn for the back layer and polyester yarn is used for the hydrophilic yarn for the back layer and the hydrophilic yarn for the surface layer, the polyester yarn is preferably of a cationic dyeable type. This is because the use of a cationic dyeable type polyester yarn can lower the dyeing temperature and does not damage the polypropylene yarn. If a normal polyester yarn is used, dyeing at 120 to 130 ° C. is necessary using a disperse dye, but if a cationic dyeable type polyester yarn is used, the dyeing temperature is 20 to 30 ° C. higher than the temperature of the normal polyester yarn. Can be lowered.

  In the back layer, when the number of the hydrophobic yarns is A and the number of the hydrophilic yarns is B, the mixing ratio of the hydrophobic yarns and the hydrophilic yarns is A: B = 1: 6-6 : 1 is preferable, and A: B is more preferably 1: 5 to 5: 1. Within this range, the water absorption can be kept high. Moreover, when the fineness of the hydrophobic yarn of the back surface layer is 1, the fineness of the hydrophilic yarn is preferably more than 0 and 1 or less, and more preferably 0.3 to 1. If it is this range, water absorption can be kept high similarly.

  The tension of the hydrophilic yarn of the back layer is preferably higher than that of the hydrophobic yarn, more preferably 5 to 10% higher. The tension can be controlled by the tension at the time of knitting. By making the tension of the hydrophilic thread higher than that of the hydrophobic thread, the tension of the hydrophilic thread is made higher than the tension of the hydrophobic thread, and the loop length of the hydrophilic thread is increased. It is preferable to make it shorter than the loop length of the hydrophobic yarn. By making the tension of the hydrophilic yarn 5 to 10% higher than the tension of the hydrophobic yarn, the tension of the hydrophilic yarn is 5 to 10% of the tension of the hydrophobic yarn. More preferably, the loop length of the hydrophilic yarn is 5 to 10% shorter than the loop length of the hydrophobic yarn. If the tension or tension is within the above range, the stickiness reduction effect is further improved.

  The water-absorbent fabric of the present invention can be sewn into clothing that is in direct contact with the skin. This clothing is suitable for sportswear, underwear, underwear, gloves, socks and the like.

  Next, it demonstrates using drawing. FIG. 1A is a schematic cross-sectional view of a water-absorbent fabric 5 in one embodiment of the present invention. The water-absorbent fabric 5 is composed of a surface layer 1 and a back surface layer 4, the surface layer 1 is composed of hydrophilic yarns, and the back surface layer 4 is composed of a mixture of hydrophobic yarns 2 and hydrophilic yarns 3a. The dough 5 absorbs water instantaneously when a water droplet is dropped from the back surface 4 and diffuses into the surface layer 1. FIG. 1B is a schematic cross-sectional view of a water-absorbent fabric 6 in another embodiment. This fabric 6 has the same structure except that the hydrophilic yarn 3b is thinner than the hydrophobic yarn 2. FIG. 2 is a knitting organization chart of the water-absorbent fabric in one embodiment of the present invention. This knitting organization chart is an organization chart of double-sided knitting (also referred to as double knitting, smooth knitting, interlock knitting, or double rib). The straight line indicates the movement of the needle, and the loop curve indicates the front and back knitting yarns.

  FIG. 3A is a perspective view when a water droplet is dropped on the water-absorbent dough in one embodiment of the present invention. The state where the water 8 of the burette 7 is gently dropped onto the back layer (skin surface) 4 of the water absorbent fabric 5 to form water droplets 9 is shown. 3B and 3C are schematic cross-sectional views showing how water droplets instantaneously migrate and diffuse to the surface layer. That is, the water droplet 9 is transferred to the surface layer 1 (atmospheric surface) and diffuses instantaneously through the hydrophilic thread of the back surface layer 4 (skin surface). Reference numeral 10 denotes a water diffusion portion. As a result, since moisture does not always remain in the back surface layer 4 (skin surface), there is no stickiness, no wet feeling and no cold feeling, and a comfortable water-absorbent fabric and clothing using the same can be provided.

  Hereinafter, the present invention will be described more specifically with reference to examples. In addition, this invention is not limited to the following Example.

  The water-repellent processed polyester multifilament yarn and the water-repellent fiber yarn polypropylene yarn used in the following are not hydrophilized during the hydrophilization treatment of the fabric. Further, in the following, unless otherwise specified, the crimp rate of the yarn is 0%.

Example 1
(1) Polyester multifilament false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 20%) was used as the surface layer yarn. This yarn was also used as a yarn to be a hydrophilic yarn for the back layer.
(2) Polyester multifilament false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 20%) and polyester multi The filament false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 20%) was mixed at a 1: 1 ratio.
(3) Knitting Using the yarn, a double-sided knitted fabric was knitted as shown in the knitting structure chart shown in FIG. As the knitting machine, a semi-jacquard made by Fukuhara Seiki Seisakusho was used, and the gauge number was 28 / inch. In addition, the knitting tension of the polyester multifilament false twisted crimped yarn and the polyester multifilament false twisted crimped yarn subjected to the water repellent treatment in the back layer was the same.
(4) Post-treatment The obtained double-sided knitted fabric was treated with a treatment liquid (130 ° C.) to which 3% owf (amount of hydrophilizing agent used per weight of fabric) was added as a hydrophilizing agent. It was immersed for 60 minutes and hydrophilized. Thereafter, it was dried, and a predetermined width was obtained with a tenter to obtain a water-absorbent fabric. The weight of the resulting water-absorbent fabric was 140 g / m ² , the wale was 40 / inch, and the course was 48 / inch.

(Example 2)
Polyester multifilament false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 20%) and polyester multifilament false twisted crimped yarn, water repellent treated with a fluorine-based water repellent on the back layer A water-absorbent fabric was prepared in the same manner as in Example 1 except that the yarn (total fineness: 84 dtex, number of components: 36, crimp ratio: 20%) was mixed at a ratio of 1: 5. Obtained. The resulting water-absorbent fabric had a basis weight of 139 g / m ² , a wale of 41 / inch, and a course of 46 / inch.

(Example 3)
Polyester multifilament false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 20%) and polyester multifilament false twisted crimped yarn, water repellent treated with a fluorine-based water repellent on the back layer A water-absorbent fabric was obtained in the same manner as in Example 1 except that the yarn (total fineness: 84 dtex, number of components: 36, crimp ratio: 20%) was mixed at a ratio of 5: 1. Obtained. The weight of the resulting water-absorbent fabric was 140 g / m ² , the wale was 41 / inch, and the course was 48 / inch.

Example 4
In the back layer, polyester multifilament false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 5%) and polypropylene false twisted crimped yarn (total fineness: 84 dtex, number of components: 36) , Crimping rate: 10%) was mixed in a ratio of 1: 1, and a water-absorbent fabric was obtained in the same manner as in Example 1. In addition, the compounding quantity of the polypropylene false twist crimped yarn which is a water-repellent fiber yarn was 20 weight% with respect to the whole yarn amount. The resulting absorbent fabric had a basis weight of 130 g / m ² , a wale of 35 / inch, and a course of 41 / inch.

(Example 5)
Polyester multifilament false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimped rate: 20%) and polypropylene false twisted crimped yarn (total fineness: 84 dtex, number of components: back layer yarn) A water-absorbent fabric was obtained in the same manner as in Example 4 except that 36 pieces (crimp rate: 10%) were used. The resulting absorbent fabric had a basis weight of 135 g / m ² , a wale of 38 / inch, and a course of 45 / inch.

(Example 6)
Polyester multifilament false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 15%) and polypropylene false twisted crimped yarn (, total fineness: 84 dtex, number of components) : 36 pieces, crimp rate: 10%) was used in the same manner as in Example 4 to obtain a water-absorbent fabric. The resulting absorbent fabric had a basis weight of 133 g / m ² , a wale of 38 / inch, and a course of 42 / inch.

(Example 7)
As yarns for the back layer, polyester multifilament false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 20%) and polypropylene yarn (total fineness: 84 dtex, number of components: 36, wrinkle) A water-absorbent fabric was obtained in the same manner as in Example 4 except that the shrinkage ratio was 0%. The resulting absorbent fabric had a basis weight of 132 g / m ² , a wale of 37 / inch, and a course of 41 / inch.

(Example 8)
As yarns for the back layer, polyester multifilament false twisted crimped yarn (total fineness: 33 dtex, constituent number: 12, crimp rate: 20%) and polypropylene false twisted crimped yarn (total fineness: 110 dtex, constituent number: A water-absorbent fabric was obtained in the same manner as in Example 1 except that 48 pieces (crimp rate: 10%) were used. In addition, the compounding quantity of the polypropylene false twist crimped yarn which is a hydrophobic thread | yarn was 30 weight% with respect to the whole thread | yarn amount. The resulting absorbent fabric had a basis weight of 136 g / m ² , a wale of 38 / inch, and a course of 46 / inch.

Example 9
Polyester multifilament temporary twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 20%) and polyester multifilament temporary treated with a fluorine-based water repellent as the back layer yarn A water-absorbent fabric was obtained in the same manner as in Example 1 except that twisted crimped yarn (total fineness: 110 dtex, number of components: 48, crimp rate: 20%) was used. The resulting absorbent fabric had a basis weight of 133 g / m ² , a wale of 38 / inch, and a course of 42 / inch.

(Example 10)
As yarns for the back layer, polyester multifilament false twisted crimped yarn (total fineness: 84 dtex, constituting number: 36, crimping rate: 20%) and polypropylene false twisted crimped yarn (total fineness: 56 dtex, constituting number: A water-absorbent fabric was obtained in the same manner as in Example 1 except that 24 pieces (crimp rate: 10%) were used. In addition, the compounding quantity of the polypropylene false twist crimped yarn which is a hydrophobic thread | yarn was 16 weight% with respect to the whole thread | yarn amount. The weight of the resulting water-absorbent fabric was 135 g / m ² , the wale was 39 / inch, and the course was 46 / inch.

(Example 11)
As yarns for the back layer, polyester multifilament false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimp ratio: 20%) and polypropylene false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 10%), the knitting tension of the polyester multifilament false twisted crimped yarn is 5% lower than that of the polypropylene false twisted crimped yarn, and the loop length of the polyester multifilament false twisted crimped yarn is reduced. A water-absorbent fabric was obtained in the same manner as in Example 1 except that the length was 5% longer than that of the polypropylene false twisted crimped yarn. In addition, the compounding quantity of the polypropylene false twist crimped yarn which is a water-repellent fiber yarn was 20 weight% with respect to the whole yarn amount. The resulting water-absorbent fabric had a basis weight of 138 g / m ² , a wale of 40 / inch, and a course of 46 / inch.

(Example 12)
Polyester multifilament false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimped rate: 20%) and polypropylene false twisted crimped yarn (total fineness: 84 dtex, number of components: back layer yarn) 36, the crimp rate: 10%), the knitting tension of the polyester multifilament false twisted crimped yarn is 5% higher than that of the polypropylene false twisted crimped yarn, and the loop length of the polyester multifilament false twisted crimped yarn is increased. A water-absorbent fabric was obtained in the same manner as in Example 1 except that it was 5% shorter than the polypropylene false twisted crimped yarn. In addition, the compounding quantity of the polypropylene false twist crimped yarn which is a water-repellent fiber yarn was 20 weight% with respect to the whole yarn amount. The resulting water-absorbent fabric had a basis weight of 139 g / m ² , wale of 40 / inch, and course of 47 / inch.

(Example 13)
Polyester multifilament false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 20%), polyester multifilament false twist A dough was prepared in the same manner as in Example 1 except that crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 20%) was mixed at a ratio of 1: 6. Obtained. The weight of the obtained dough was 141 g / m ² , wale was 40 / inch, and the course was 49 / inch.

(Example 14)
Polyester multifilament false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 20%), polyester multifilament false twist The dough was made in the same manner as in Example 1 except that the crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 20%) was mixed in a ratio of 6: 1. Obtained. The fabric weight obtained was 140 g / m ² , the wale was 39 / inch, and the course was 49 / inch.

(Comparative Example 1)
The fabric was made in the same manner as in Example 1 except that only the polyester multifilament false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 20%) was used as the back layer yarn. Obtained. The fabric weight obtained was 142 g / m ² , the wale was 42 / inch, and the course was 49 / inch.

(Comparative Example 2)
Except for using only a polyester multifilament false twisted crimped yarn (total fineness: 84 dtex, number of components: 36, crimp rate: 20%) treated with a fluorine-based water repellent as the back layer yarn, A dough was obtained in the same manner as in Example 1. The fabric weight obtained was 140 g / m ² , the wale was 41 / inch, and the course was 49 / inch.

  The liquid moisture absorptivity (water absorption) and adhesion of the fabrics of Examples and Comparative Examples were measured as follows, and the results are shown in Table 2 below. In addition, the fabric was sewn on a running shirt, and the wearing feeling was evaluated as follows. The results are shown in Table 2 below. Table 2 below also shows the ratio of the number of hydrophilic and hydrophobic yarns in the back layer, the fineness ratio, the crimp rate difference, and the tension difference.

(Liquid moisture absorption)
According to JIS L 1907, the liquid water absorbency was measured by the dropping method. Specifically, as shown in FIGS. 3A and 3B, using a burette (with JIS R 3505 stopcock), one drop (about 0.04 ml) of water is dropped from the back of the fabric, and water drops from the back of the fabric. The time until disappearance was measured.

Based on the measurement results of the liquid water absorbability, the water absorption of the dough was evaluated in the following four stages.
A: Within 1S, water absorption is very excellent.
B: It is within 3S exceeding 1S, and water absorption is excellent.
C: Within 3 seconds exceeding 3S and having water absorption.
D: Even if it exceeds 5S, it does not absorb water and does not have water absorption.

(Adhesion)
This measurement was performed in order to express stickiness with data. The water was dropped on the surface of the dough, compressed after being dropped, and the frictional resistance in the vertical direction when being pulled apart was measured. The equipment used was a KES (Kawabata's Evaluation System) simple compression meter (manufactured by Kato Tech Co., Ltd.), the diameter of the compression surface was 3.6 cm, the compression speed was 0.2 cm / s, and the measurement was performed under a load of 50 gf. . The measurement was performed in the range of 0.1 to 1.0 ml of water dripping amount, and Table 2 shows the results when the water dripping amount was 0.5 ml and 1 ml.

Based on the frictional resistance when the amount of moisture reduction measured above was 1.0 ml, the stickiness was evaluated in the following four stages, and the results are shown in Table 2 below.
A: It is 0-5 gf, and there is no sticky feeling at all.
B: It exceeds 10 gf and exceeds 5 gf, and there is no stickiness.
C: It exceeds 10 gf and is less than 30 gf, and there is some stickiness.
D: It is 30 gf or more, and there is a sticky feeling.

(Wear test)
The fabric was sewn on a running shirt, and 8 subjects wore it, and jogged for 60 minutes at a speed of 10km / h under the weather conditions of 30 ° C and 70% relative humidity. The wearing feeling was evaluated based on the criteria.
A: Very good.
B: Excellent.
C: Normal.
D: Bad.

  From the data of Examples 1 to 3, Example 13 and Example 14 in Table 2, the mixing ratio of the hydrophobic yarn and the hydrophilic yarn in the back layer is in the range of 1: 5 to 5: 1 in terms of the number ratio. In this case, the water absorption is superior, the stickiness is also good, and the wear feeling is also excellent. Moreover, from the data of Example 1 and Examples 4 to 7, when the crimp rate of the hydrophilic yarn of the back layer is higher than the crimp rate of the hydrophobic yarn, preferably 5% or more, the feeling of stickiness is better. Yes, it is understood that it is excellent in wearing feeling. Further, from the data of Example 1, Example 11 and Example 12, when the tension of the hydrophilic yarn of the back layer is higher than the tension of the hydrophobic yarn, preferably 5% or more, and the loop length is shortened, It turns out that it is excellent in water absorption, the sticky feeling is also good, and the feeling of wearing is also excellent. Further, from the data of Example 1 and Example 9 and the data of Example 5, Example 8 and Example 9, the fineness of the hydrophilic yarn in the back layer is smaller than the fineness of the hydrophobic yarn, preferably the fineness ratio is When it is more than 0 and 1 or less, it can be seen that the feeling of stickiness is better and the feeling of wearing is also superior.

  The water-absorbent fabric of the present invention is suitable for clothing that is in direct contact with the skin, such as sportswear, underwear, underwear, gloves, and socks.

DESCRIPTION OF SYMBOLS 1 Surface layer 2 Hydrophobic thread | yarn 3a, 3b Hydrophilic thread | yarn 4 Back surface layer 5, 6 Water-absorbent cloth 7 Bullet 8 Water 9 Water drop 10 Water diffusion part

Claims (10)

A water-absorbent fabric comprising a multi-layered knitted or woven fabric including a front surface layer and a back surface layer,
The surface layer is composed of hydrophilic yarn,
The back layer is composed of a mixture of hydrophobic yarns and hydrophilic yarns,
A water-absorbent dough characterized in that when a water droplet is dropped from the back surface of the dough, it absorbs water instantaneously and diffuses into the surface layer.   The water absorbent fabric according to claim 1, wherein the hydrophobic yarn of the back layer has a crimp rate of 0 to 15%.   The hydrophilic yarn of the surface layer and the hydrophilic yarn of the back layer are at least one selected from the group consisting of nylon yarn, acetate yarn, ethylene vinyl alcohol yarn, hydrophilic polyester yarn, and hydrophilic acrylic yarn. The water-absorbent fabric according to claim 1.   The water-absorbent fabric according to claim 1 or 3, wherein the hydrophilic yarn of the surface layer and the hydrophilic yarn of the back layer are false twisted crimped yarns subjected to a hydrophilic treatment.   The hydrophobic yarn of the back layer is selected from the group consisting of polypropylene yarn, polyester water repellent yarn, acrylic water repellent yarn, nylon water repellent yarn, acetate water repellent yarn and ethylene vinyl alcohol water repellent yarn. The water-absorbent fabric according to claim 1 or 2, which is at least one.   In the back layer, when the number of the hydrophobic yarns is A and the number of the hydrophilic yarns is B, the mixture ratio of the hydrophobic yarns and the hydrophilic yarns is A: B = 1: 5 to 5 The water-absorbent fabric according to any one of claims 1 to 5, wherein The water absorbent fabric according to any one of claims 1 to 6, wherein in the back layer, the fineness of the hydrophilic yarn is greater than 0 and less than or equal to 1 when the fineness of the hydrophobic yarn is 1.   The water absorbent fabric according to any one of claims 1 to 7, wherein in the back layer, the crimp rate of the hydrophilic yarn is 5% or more higher than the crimp rate of the hydrophobic yarn.   The water absorbent fabric according to any one of claims 1 to 8, wherein in the back layer, a loop length of the hydrophilic yarn is shorter than a loop length of the hydrophobic yarn.   A garment characterized in that the water-absorbent fabric according to any one of claims 1 to 9 is sewn on a garment in direct contact with the skin.

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