JP2010007203A - Cloth and clothing using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cloth that is an ordinary cloth in a dry state and regulates air permeability by elongation of a specific yarn in the surface direction in a wet state, and to provide clothing using the same. <P>SOLUTION: The cloth includes an elongation yarn A containing a yarn elongating in a wet state and a yarn B not elongating even in a wet state or having a wet elongation ratio lower than that of the elongation yarn A. The elongation yarn A includes a relatively low count yarn a1 and a relatively high count yarn a2, the low count yarn a1 of the elongation yarn A is disposed on either the surface or the back of the cloth, the low count yarn a2 of the elongation yarn A and the yarn B having a relatively higher count than that of the elongation yarn A are laminated and arranged in the thickness direction of the yarn A so that the elongation A has reversibility in which the elongation yarn A is elongated in the surface direction of the cloth in a wet state to increase air permeability and is returned to the original state in a drying equilibrium state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fabric whose air permeability can be reversibly changed by moisture and a garment using the fabric.

  Conventionally, mesh cloth has been used for clothes such as underwear and T-shirts used in daily life and clothes worn in sports in order to prevent dampness and improve air permeability. The fabric having a mesh (hole) is directly exchanged with the outside air, has good air permeability, and can improve ventilation or air circulation in clothing. For example, Patent Document 1 has been proposed as a clothing using a mesh fabric.

  The simple mesh fabric proposed in Patent Document 1 has a problem that it is transparent, and there is a problem that when it is not perspiring, the air permeability is too good to cope with changes in the outside air such as cold. Also, a reversible breathable fabric that uses water-swellable composite fiber yarns in any layer of the multilayered fabric fabric and extends the yarns in the thickness direction of the fabric to increase the difference in air permeability between dry and wet Has also been proposed (Patent Document 2).

However, when the water-swellable composite fiber yarn is used in any layer of the multi-layer structure fabric, the entire layer swells, which is not only unfavorable as clothing but also hinders the movement of the human body. It was. It was also difficult to adjust the air permeability when dry and wet.
JP 2006-249610 A Japanese Patent No. 3834018

  In order to solve the above-described conventional problems, the present invention provides a fabric that is a normal fabric when dried and a fabric in which a specific thread extends in the surface direction when wet and the air permeability can be adjusted, and a garment using the fabric.

  The fabric of the present invention is a fabric comprising an extended yarn A containing fibers that elongate when wet, and a yarn B that does not stretch even when wet or has a relatively low wet elongation rate than the stretched yarn A, The elongated yarn A includes a relatively thick yarn a1 and a relatively fine yarn a2, and the thick yarn a1 of the elongated yarn A is disposed on either the front surface or the back surface of the fabric, By arranging the fine yarn a2 of the elongated yarn A2 and the fiber yarn B having a finer number than the elongated yarn A in the thickness direction of the yarn A, the elongated yarn A is made of the fabric when wet. It is characterized by extending in the surface direction and expanding air permeability, and having reversibility to return to the original state at the time of drying equilibrium.

  The garment of the present invention is characterized in that the fabric is disposed at least on a portion of the human body where sweating is high.

  The fabric and clothing of the present invention are ordinary fabrics when dried, but have the reversibility that the stretched yarn A stretches in the surface direction and expands air permeability when wet, and returns to the original state when dry. That is, it moves like a pore of a plant, and the air permeability can be reversibly changed by moisture. Thereby, the air permeability at the time of drying and wetness can be adjusted.

  The fabric of the present invention includes an extended yarn A containing fibers that elongate when wet, and a yarn B that does not elongate when wet or has a relatively low wet elongation rate than the extended yarn A. As a fiber that elongates when wet, for example, as disclosed in Japanese Patent No. 3834018, a composite spinning of a cellulose acetate having an average substitution degree of less than 2.6 and a cellulose acetate having an average substitution degree of 2.76 or more is a side-by-side type composite spinning. And the fiber obtained by treating this composite fiber with an alkali and saponifying the acetyl group of cellulose acetate having an average substitution degree of less than 2.6 to a hydroxyl group can be used. This yarn is sold, for example, under the trade name “Bent Cool” manufactured by Mitsubishi Rayon. As another example, as disclosed in Japanese Patent Application Laid-Open No. 2003-41462, etc., there is a fiber containing a polyester copolymerized with 5-sodium sulfoisophthalic acid as one component of a composite fiber.

  As the fiber yarn B that does not stretch even when wet or has a relatively low wet elongation rate than the stretched yarn A, ordinary polyester (polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, etc.) fiber yarn, polyamide fiber There are yarn, acetate fiber yarn, cotton fiber yarn, rayon fiber yarn, ethylene vinyl alcohol fiber yarn and the like. Of these, polyethylene terephthalate (PET) fiber yarns that are thermoplastic, have good heat setting properties, and are hydrophobic are preferred. In order to add a refreshing feeling, an ethylene vinyl alcohol fiber yarn (for example, “Sophistica” manufactured by Kuraray Co., Ltd.) that is thermoplastic and has good heat setting properties is preferable.

  In the present invention, it is preferable to combine the relatively thick yarn a1 and the relatively fine yarn a2 of the elongated yarn A by drawing. Similarly, it is preferable to combine the relatively thick yarn a1 and the relatively thin fiber yarn B of the stretched yarn A by drawing. The reason why the yarn a1 and the yarn a2 and the yarn a1 and the yarn B are used in combination is to prevent the yarn from being twisted during weaving or knitting. That is, when the thick yarn and the fine yarn are aligned and woven or knitted, the thick yarn can be arranged on the same side. The reason for combining the two yarns is to maintain the stability and functionality of the fabric.

  The fabric of the present invention has the reversibility that the stretched yarn A extends in the surface direction of the fabric when wet and the air permeability is expanded, and returns to the original state when dry. When wet, the texture or stitches become large and the air permeability becomes high. That is, the texture or stitch when wet becomes coarse or the texture or stitches open due to wrinkles entering the fabric, and the air permeability becomes high. At the time of drying equilibrium, it returns to its original state and reversibly changes.

Further, it is preferable to arrange the thick count yarn a1 on the front side (atmosphere side) of the fabric, and arrange the fine count yarn a2 and the fiber yarn B on the back side (skin surface) of the fabric at a constant ratio. The yarn a1 is arranged on the front side (atmosphere side) of the fabric and the yarn a2 and the fiber yarn B are arranged on the back side (skin surface) of the fabric so that the yarn is not twisted during the weaving or knitting. In order to increase the production efficiency of the fabric by making the county yarns lined up on the same side and maintaining the stability and functionality of the fabric, as well as the aesthetics of the front side (atmosphere side) of the fabric. is there.
The count of the fine count yarn a2 is preferably in the range of 0.3 to 0.75 times that of the thick count yarn a1. This is because the stability of the dough is further increased.

  Further, the tension (tension) of the fine count yarn a2 is preferably 5% to 15% higher than the tension of the thick count yarn a1. The reason why the thick yarn a1 and the fine yarn a2 having higher tension than that of the thick yarn are used in combination as a pair is to prevent the yarn from twisting during weaving or knitting. That is, when the thick count yarn and the fine count yarn with high tension are aligned and woven or knitted, the thick count yarn can be arranged on the same side. Moreover, it is for maintaining the stability and functionality of the fabric by combining two yarns. In other words, using a fine count yarn and a thick count yarn in pairs and increasing the tension of the fine count over the thick count synergizes the effect of arranging the thick count on the same side without twisting. There is an effect to increase. This can be achieved by increasing the tension of the yarn when forming the woven or knitted fabric.

  The stretched yarn A containing fibers that elongate when wet is a fiber that elongates when the core is wet, and does not elongate even when the periphery is moistened, or has a relatively low wet elongation rate compared to fibers that elongate when wet. The yarn is preferably a yarn covered with a fiber or a yarn in which a fiber that elongates when wet and a fiber that has a low wet elongation rate are mixed. When such a covering yarn or mixed yarn is used, the dimensional stability can be further increased.

  Further, when the fabric is 100%, the composition ratio of the fiber yarn B is preferably 5 to 50%. Within this range, the dimensional stability when wet can be further maintained.

  In addition, it is preferable that the constituent ratio of the fine count yarn a2 is larger than the number of the fiber yarns B. When the number of fine yarns a2 is large, the number of fibers that elongate when wet is increased, and the air permeability is further increased.

  Further, the fabric may partially include a mesh structure. The mesh structure originally has high air permeability, but when incorporated in the fabric of the present invention, the air permeability is further increased. The mesh structure is preferably composed of fiber yarns B. Since the fiber yarn B is relatively rigid, there is little dimensional change even when wet, and the form stability can be increased.

The dough preferably has a higher air permeability at a temperature of 20 ° C. and a moisture content of 50% by weight than the air permeability at the time of drying equilibrium at a temperature of 20 ° C. and a relative humidity of 65% by 50 ml / cm ² · s or more. . If it is this range, the air permeability at the time of drying and wetness can be adjusted more favorably.

  The fiber yarn A that elongates when wet is preferably a composite fiber yarn having heat setting properties. When the fabric has a heat setting property, a fabric with good dimensional stability can be obtained by using a tenter or the like at the time of finishing the fabric to heat and set the fabric or knitted fabric in the longitudinal direction by 5 to 20%.

  The fiber yarn A that elongates when wet is preferably a crimped yarn. The crimped yarn has a reversibility that elongates when wet and returns to a crimped state when dry.

  The fabric of the present invention may be woven or knitted. As the woven fabric, plain weave, oblique weave, satin weave, altered plain weave, altered oblique weave, altered satin weave, alter weave, crest weave, single layer weave, double structure, multiple structure, warp pile weft, weft pile weave, entanglement There are weaving etc. Examples of the knitted fabric include round knitting, weft knitting, warp knitting (including tricot knitting and raschel knitting), pile knitting, flat knitting, tengu knitting, rib knitting, smooth knitting (double-sided knitting), rubber knitting, pearl knitting, There are denby tissue, cord tissue, atlas tissue, chain tissue, insertion tissue and the like. Among these, a single-layer knitted fabric is preferable. When the knitted fabric is a single layer, the weave or stitches extend in the plane direction when wet, and the air permeability becomes high. In addition, the basis weight (weight per unit area) is light and suitable for use on sweaty parts of clothing. As the knitted fabric, warp knitting such as tricot and raschel, and knitted knitting such as weft knitting and circular knitting are preferable. A circular knitting that is particularly suitable for thin objects and has high production efficiency is preferred.

In the present invention, the preferred basis weight of the dough is 100 g / m ² or more and less than 200 g / m ² . A thin fabric is preferable because it is used for a sweaty portion of clothing.

  The fabric is placed at least on the sweating part of the human body to form clothing. For example, it may be used for all sports shirts, T-shirts, underwear shirts, briefs, general shirts, etc., or may be used for a part of the side, back, etc. When used for all shirts or a part of the side, back, etc., it is preferable to sew so that the fabric portion constituted by the fiber yarn B is in the longitudinal direction of the human body.

  Next, it demonstrates using drawing. FIG. 1 is a layout diagram of yarns when creating a circular knitted fabric in one embodiment of the present invention. Rigid yarn that does not change in dimensions even when wetted with thick count yarn a1 by pulling thick count yarn a1 and fine count yarn a2 together as stretched yarn A containing fibers that stretch when wet and supplying them to the first to fourth needles from the left The fine yarn yarn B is aligned and supplied to the fifth needle from the left, and the circular knitted fabric is created by repeating this process thereafter. At this time, the thick count yarn a1 is arranged on the surface of the fabric, and the fine count yarn a2 and the fiber yarn B are arranged on the back side of the fabric.

  FIG. 2 is a schematic diagram of a circular knitted fabric when the yarn shown in FIG. 1 is arranged. This is a repetition of the knit formed by the needles 1 to 5, and all the stitches of the knit 11 are formed.

  FIG. 3 is the same as FIG. 2 except that the yarn arrangement of FIG. 1 is performed and only the needle 1 has a tuck 12 inserted after the stitches of four continuous knits 11. Here, “tack” means that an old stitch is not escaped while being held by a needle in a certain course, but is escaped at the same time as the course of the course in the next course or several courses, thereby making the stitch longer than the normal stitch. Say what formed. For example, an organization chart of the tack 12 is shown in FIG. A mesh is formed by the tack. In this embodiment, a mesh is formed in the portion where the non-stretched yarn (fiber B) is arranged, and stabilized so that the dimensional change of the fabric is not too large due to wetting.

  FIG. 4 is a schematic diagram of a circular knitted fabric in which mesh holes are further enlarged as compared with FIG. This is a repetition of the structure formed by the needles 1 to 6, and all the needles 3 to 6 constitute the stitches of the knit 11. The needle 1 has a tuck 12 after the stitches of four continuous knits 11. In the needle 2, a non-extendable yarn (fiber B) is knitted into the tack portion of the needle 1 by knit.

  FIG. 6A is a schematic view of a covering yarn 23 in which a core yarn 21 is used as a yarn that extends when wet and a non-extendable fiber is used as a covering yarn 22 as an example of a thick yarn a1 and a fine yarn a2 as an extended yarn A. A sectional view and FIG. 6B are schematic sectional views of the mixed yarn 24.

  The circular knitting will be described below. For example, a 24 gauge (G) can be used as the circular knitting machine. The used yarn can have a fineness of 100 to 220 dtex (decitex) for the surface yarn, but better is about 167 dtex. The back yarn can be 30 to 167 dtex, but better is about 83 dtex. If it is the said range, stability and functionality (Q'max: thermal conductivity and air permeability at the time of wetness) of cloth | dough can be implement | achieved favorably. Further, the tension of the back yarn during knitting is preferably about 5 to 15% higher than that of the front yarn. More preferably, it is about 6 to 10% higher. When knitting in this manner, the stability of the fabric is further increased, and the knitting efficiency is not lowered.

  Hereinafter, the present invention will be described more specifically with reference to examples. Note that the present invention is not limited to the following examples.

Example 1
1. Knitting of the knitted fabric A 24 G gauge circular knitting machine was used as the knitting machine. The knitting structure was a tengu (the “tengu” structure shown in FIG. 2). The yarns used are as follows.
(1) Front yarn: Polyester (PET) processed yarn 33 dtex (12 filaments) was covered on 100 dtex (40 filaments) manufactured by Mitsubishi Rayon Co., Ltd. (FIG. 6).
(2) Back Yarn 1: Polyethylene (PET) raw yarn 33 dtex (36 filaments) was covered with a product name “Bent Cool” 40 dtex (16 filaments) manufactured by Mitsubishi Rayon Co. (FIG. 6).
(3) Back yarn 2: Kuraray brand name “Sophista” 84 dtex (24 filaments)
The tension of the supply yarn at the time of knitting was set so that the back yarn was 9% higher than the front yarn.
2. Dyeing and finishing The obtained knitted fabric was dyed according to a conventional method. Then, it pulled along the longitudinal direction of the knitted fabric and heat-set finished. At this time, the heat set temperature was 170 ° C., and the time was 150 seconds.
3. Condition when liquid water was applied and wetted and air permeability measurement test The air permeability at the time of drying equilibrium of the obtained knitted fabric was 155 ml / cm ² · s. This knitted fabric was immersed in water for 24 hours, dehydrated, dried, and the air permeability at 20 ° C. and a relative humidity of 65% was 220 ml / cm ² · s in a wet state with a moisture content of 50% by weight. Furthermore, when returned to the drying equilibrium, the air permeability was 155 ml / cm ² · s, and it was confirmed that there was reversibility.
4). Fabric characteristics of the knitted fabric The basis weight of the obtained knitted fabric was 178 g / m ² , and the dimensional stability in the JIS L 0217 103 method was a shrinkage ratio of -3.0% / width-3.5%. Moreover, the burst strength in JIS L1018 8.17.1 A method (Murren method) was 502 kPa. In addition, in order to verify the effect of thermal conductivity of the fabric, Thermolab ll (manufactured by Kato Tech Co., Ltd.) was used, 10 cm long, 10 cm long, 10 cm long on a block made of highly styrofoam foam and 10 cm high The sample piece was placed with the back side of the fabric having a width of 10 cm on top, and a heat source heated to 40 ° C. with a heat source plate having a length of 10 cm and a width of 10 cm was further placed thereon. At this time, the amount of heat transferred from the heat source to the sample piece was measured as the amount of heat transferred during contact. Functionality (thermal conductivity) in this situation: Q′max was 0.284 J / cm ² · s.
5). Wear test The knitted fabric obtained in Example 1 was arranged so that the mesh hole was in the longitudinal direction of the human body, and was sewn on the side part where the sweating of the sports shirt was high and on the back part. When running with this shirt, the mesh hole was closed before sweating, and when sweated and wet, the mesh hole opened, air permeability increased, and functionality and comfort were good It could be confirmed.

(Example 2)
A 24 G gauge circular knitting machine was used as the knitting machine. The knitting structure was a tack mesh (a structure of “tengu + tuck” shown in FIG. 3). The yarns used are as follows.
(1) Front yarn: Polyester (PET) processed yarn 33 dtex (12 filaments) was covered on 100 dtex (40 filaments) manufactured by Mitsubishi Rayon Co., Ltd. (FIG. 6).
(2) Back Yarn 1: Polyethylene (PET) raw yarn 33 dtex (36 filaments) was covered with a product name “Bent Cool” 40 dtex (16 filaments) manufactured by Mitsubishi Rayon Co. (FIG. 6).
(3) Back yarn 2: Kuraray brand name “Sophista” 84 dtex (24 filaments)
The tension of the supply yarn at the time of knitting was set so that the back yarn was 9% higher than the front yarn.
2. Dyeing and finishing The obtained knitted fabric was dyed according to a conventional method. Then, it pulled along the longitudinal direction of the knitted fabric and heat-set finished. At this time, the heat set temperature was 170 ° C., and the time was 150 seconds.
3. Condition when liquid water was applied and wetted and air permeability measurement test A knitted fabric was formed in the same manner as in Example 1 except that the structure of Example 1 was replaced with a tack mesh. The basis weight of the knitted fabric was 164 g / m ² . Further, (described in Example 1) air permeability test, air permeability during the drying equilibrium, 177ml / cm ² · s, the air permeability in the wet state as in Example 1, 259ml / cm ² · s met It was. Furthermore, when it returned to the time of drying equilibrium, air permeability was 177 ml / cm < ² > * s, and it has confirmed that it was reversible. Functionality (thermal conductivity): Q′max was 0.254 J / cm ² · s.

  The obtained knitted fabric was sewed on a sports shirt in the same manner as in Example 1 and was subjected to a wear test. The mesh hole was closed before sweating, and the mesh hole was opened and became breathable when sweated. It was also confirmed that the functionality and comfort were good.

  FIG. 7A is a schematic plan view of the obtained tack mesh knitted fabric (at the time of drying) 30. There are a knit 11 part and a tuck 12 part, and the knit 11 part is composed of a stretch yarn A including fibers that are stretched when wet, in which a thick count yarn a1 and a fine count yarn a2 are aligned, and the portion including the tack 12 is It is composed of a non-elongated yarn B and an aligned yarn of a thick count yarn a1 of an elongated yarn A including fibers that elongate when wet. FIG. 7B is a schematic plan view of the tack mesh knitted fabric (when wet) 31. It can be seen that the entire area is expanded and the stitches of the knit 11 and the holes of the tack 12 are opened. Thereby, air permeability becomes high and functionality (thermal conductivity) and comfort are improved.

FIG. 1 is a layout diagram of yarns when creating a circular knitted fabric in one embodiment of the present invention. FIG. 2 is a knitted fabric organization chart according to one embodiment of the present invention. FIG. 3 is a knitted fabric organization chart according to another embodiment of the present invention. FIG. 4 is a knitted fabric structure diagram in still another embodiment of the present invention. FIG. 5 is a tack organization chart according to an embodiment of the present invention. FIG. 6A is a schematic cross-sectional view of a covering yarn that uses a stretched yarn as a core yarn and non-stretched fibers as a covering yarn in one embodiment of the present invention, and FIG. 6B is a schematic cross-sectional view of the blended yarn. . FIG. 7A is a schematic plan view of the tack mesh knitted fabric (when dry) obtained in Example 2, and FIG. 7B is a schematic plan view of the tack mesh knitted fabric (when wet).

Explanation of symbols

1, 2, 3, 4, 5, 6 Needle 11 Knit 12 Tack 21 Core yarn 22 Covered yarn 23 Covering yarn 24 Blended yarn 30 Tuck mesh knitted fabric (when dry)
31 Tuck mesh knitting (when wet)
A A stretched yarn containing fibers that elongate when wet A1 Thick yarn a2 Fine yarn B Non-extendable yarn

Claims (12)

A fabric comprising an extended yarn A containing fibers that elongate when wet, and a yarn B that does not elongate when wet or has a relatively low wet extension rate than the extended yarn A,
The elongated yarn A includes a relatively thick yarn a1 and a relatively fine yarn a2.
The thick yarn a1 of the stretched yarn A is disposed on either the front surface or the back surface of the fabric,
By laminating the fine yarn yarn a2 of the elongated yarn A and the fiber yarn B having a yarn count relatively thinner than the elongated yarn A in the thickness direction of the yarn A,
A fabric characterized in that the stretched yarn A stretches in the surface direction of the fabric when wet and expands air permeability, and reversibly returns to its original state when dry.   The fabric according to claim 1, wherein the thick count yarn a1 is arranged on the front side of the fabric, and the fine count yarn a2 and fiber yarn B are arranged on the back side of the fabric.   The fabric according to claim 1 or 2, wherein a count of the fine count yarn a2 is in a range of 0.3 to 0.75 times that of the thick count yarn a1.   The fabric according to any one of claims 1 to 3, wherein the tension of the fine yarn a2 and the fiber yarn B is 5% to 15% higher than the tension of the thick yarn a1.   The stretch yarn A containing fibers that elongate when wet is a fiber that elongates when the core is wet, and does not elongate even when the periphery is moistened, or has a relatively low wet elongation rate than the fibers that elongate when wet. The fabric according to any one of claims 1 to 4, which is a yarn covered with a fiber or a yarn obtained by mixing a fiber that elongates when wet and a fiber with a low wet elongation rate.   The fabric according to any one of claims 1 to 5, wherein a ratio of the fiber yarn B is 5 to 50% when the fabric is 100%.   The fabric according to any one of claims 1 to 6, wherein the fine count yarn a2 has a higher composition ratio than the number of fiber yarns B.   The cloth according to any one of claims 1 to 7, wherein the cloth includes a mesh structure in part.   The fabric according to claim 8, wherein a constituent portion of the fiber yarn B has a mesh structure. The dough of the dough at a temperature of 20 ° C and a moisture content of 50% by weight is 50 ml / cm ² · s or more higher than the air permeability at the time of drying equilibrium at a temperature of 20 ° C and a relative humidity of 65%. The fabric according to any one of to 9.   The fabric according to any one of claims 1 to 10, wherein the fabric is a single-layer knitted fabric.   A garment in which the fabric according to any one of claims 1 to 11 is disposed at least on a portion of a human body where sweating is high.

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