JP2002266207A - Water-absorbing and rapidly dryable woven or knitted fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water-absorbing and rapidly dryable woven or knitted fabric having moisture-absorbing properties in addition to the water-absorbing and rapidly dryable properties, and hardly losing the properties even if being subjected to a dyeing step. SOLUTION: This woven or knitted fabric including a core-sheath type composite yarn comprising a core part composed of a fiber having >=3.5% official moisture regain, and a sheath part composed of a fiver having <=1.0% official moisture regain, as at least a part is characterized in that the core part and the sheath part of the core-sheath type composite yarn may not reversed eve if the woven or knitted fabric is treated in hot water at 135 deg.C for 45 min.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a woven or knitted fabric using a core-sheath type composite yarn. More specifically, water absorption suitable for sportswear, casual wear, uniforms, etc.,
The present invention relates to a woven or knitted fabric excellent in quick drying property.

[0002]

2. Description of the Related Art Conventionally, as a woven or knitted fabric excellent in water absorption and quick drying, a woven or knitted fabric using a polyester fiber and utilizing a capillary effect, or a woven or knitted fabric having a water-absorbing substance adhered to the woven or knitted fabric surface is known. Have been. However, in the former,
Although the water absorption and quick drying are high, the moisture absorption of the polyester fiber is insufficient, so there is a problem of stuffiness, and in the latter, the water-absorbing substance falls off the woven or knitted surface by post-processing such as washing. There is a problem that the effect of hygroscopicity is reduced.

As a composite yarn excellent in water absorbency and quick drying, a two-layer structure yarn in which a hydrophobic filament such as polyester is wound around a water-absorbent staple bundle such as cotton is known. In a woven or knitted fabric using a structural yarn, when the woven or knitted fabric is manufactured and then subjected to a dyeing process, the two-layer structured yarn is subjected to a heat treatment to reduce the hot water shrinkage rate of the fiber constituting the core and the sheath. The reversal phenomenon between the core and the sheath is caused by the difference in the hot water shrinkage of the fibers constituting the part. As a result, after the woven or knitted fabric has passed through the dyeing process, the water-absorbent staple bundle in the two-layer structure yarn will be located at the sheath, and when the woven or knitted fabric that has undergone the dyeing process is worn, The water-absorbing staple bundle absorbs sweat and has a problem such as discomfort due to stickiness.

[0004] As described above, it has been conventionally necessary to provide a woven or knitted fabric which has not only water absorbing property and quick drying property but also moisture absorbing property, and which maintains these effects even after a dyeing process, and which is excellent in wearing comfort. Not enough.

[0005]

SUMMARY OF THE INVENTION The present invention has a water-absorbing property, a quick-drying property, and a moisture-absorbing effect even after a dyeing process, and has no stickiness and excellent wearing feeling. To provide a water-absorbing quick-drying woven or knitted fabric.

[0006]

Means for Solving the Problems The present invention has been completed as a result of intensive studies by the present inventors in order to solve such problems, and the first aspect of the present invention is that the core has an official moisture content of 3.5%. A core-sheath type composite yarn composed of the above fibers and having a sheath portion made of a fiber having an official moisture content of 1.0% or less is included in at least a part thereof, and is treated for 45 minutes in hot water at 135 ° C. Is a water-absorbing quick-drying woven or knitted fabric characterized in that the core and the sheath of the core-sheath type composite yarn are not inverted. The second is the water-absorbing quick-drying property, wherein the hot water shrinkage of the fibers constituting the core is 2 to 12% and the hot water shrinkage of the fibers constituting the sheath is 5 to 15%. It is a woven or knitted fabric. The third is the water-absorbing quick-drying woven or knitted fabric according to any one of the above items 1 and 2, wherein the fibers constituting the sheath portion have been subjected to a water absorbing process. A fourth aspect is the water-absorbing quick-drying woven or knitted fabric according to any one of the above items 1 to 3, wherein the fibers constituting the sheath portion are fibers having streak grooves in the fiber axis direction. Fifth, the fibers constituting the core are regenerated fiber filaments or semi-synthetic fiber filaments, and the fibers constituting the sheath are synthetic fiber filaments.
A water-absorbing quick-drying woven or knitted fabric according to any one of the above.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
First, in the core-sheath type composite yarn used in the present invention, in order for the core portion to have a hygroscopic effect, the fiber constituting the core portion needs to have an official moisture regain of 3.5% or more. The official moisture content referred to in the present invention means JISL according to the type of fiber.
1013 or L1018. If the official moisture regain of the fiber constituting the core is lower than 3.5%, a sufficient moisture absorbing effect cannot be obtained, and the feeling of unevenness cannot be eliminated. Here, examples of the fiber having an official moisture regain of 3.5% or more include regenerated fibers such as rayon and cupra, semi-synthetic fibers such as acetate, and synthetic fibers such as nylon, but are not particularly limited in the present invention. . The form of the fiber constituting the core may be either a filament or a staple, but a filament is preferable for suppressing bulkiness and maintaining high wearing comfort.
It is more preferable to use a multifilament having a density of 3 to 110 dtex and a single yarn fineness of 1 to 5 dtex.
By constituting the core with the above-mentioned fibers, a sufficient moisture absorbing effect can be obtained.

Further, in the core-sheath type composite yarn used in the present invention, the core is covered with a sheath, and the sheath has a water-absorbing and quick-drying effect. Due to the effects of water absorption and quick-drying, it is possible to quickly absorb the sweat sweated from the skin and reduce the feeling of wetting. For this purpose, the sheath needs to be made of fibers having an official moisture regain of 1.0% or less. Examples of fibers having an official moisture content of 1.0% or less include synthetic fibers such as polyester, polyethylene, and polypropylene, but are not particularly limited in the present invention. The form of the fiber constituting the sheath may be either a filament or a staple, but like the core, a filament is preferable for suppressing bulkiness. Further, in order to provide the sheath portion with an excellent water absorbing effect, it is more preferable to use a multifilament or a crimped multifilament having a total fineness of 33 to 220 dtex and a single yarn fineness of 4 dtex or less. Further, in order to further enhance the water absorbing effect of the sheath portion, a hydrophilic agent such as a polyether compound is adsorbed on the fiber constituting the sheath portion, or the fiber constituting the sheath portion is formed as a streak-like groove in the fiber axis direction. It is preferable to use fibers having By constituting the sheath portion with the above-described fibers, sufficient water absorbing and quick drying effects can be obtained.

In the core-sheath type composite yarn used in the present invention, the weight ratio of the fiber constituting the core to the fiber constituting the sheath is preferably from 1: 4 to 4: 1. When the weight ratio of the fibers constituting the core is lower than 20%, the hygroscopic effect of the core-sheath type composite yarn is reduced, and conversely, when the weight ratio of the fibers constituting the sheath is lower than 20%. This makes it difficult for the sheath to sufficiently cover the core, and the water-absorbing quick-drying effect is reduced. For these reasons, it is desirable that the weight ratio of the fibers constituting the core to the fibers constituting the sheath be in the above range.

The method for producing the core-sheath type composite yarn used in the present invention includes a covering method of winding a fiber constituting a sheath around a fiber constituting a core, an air processing method, and a false twisting method. And the like are suitable, but not particularly limited.

Next, according to the present invention, a woven or knitted fabric containing at least a part of the above-mentioned core-sheath type composite yarn,
It is necessary that the core and the sheath of the core-sheath type composite yarn do not reverse even after being treated in hot water at 35 ° C. for 45 minutes. Usually, the woven or knitted fabric produced in the weaving or knitting process is subjected to a dyeing process, and the woven or knitted fabric is treated with hot water. For this reason, in the core-sheath type structural yarn used in the woven or knitted fabric, when the hot water shrinkage of the fiber constituting the sheath is significantly larger than the hot water shrinkage of the fiber constituting the core, the hot water Because the core and the sheath are reversed by the action of the treatment, the fiber that was initially located in the core to the sheath,
The fiber located in the sheath moves to the core. as a result,
The water-absorbing effect and the quick-drying effect of the core-sheath type composite yarn that were provided before the dyeing process are lost after the dyeing process. As described above, even when heat treatment is performed in the dyeing process, the core and the sheath of the core-sheath type composite yarn need not be inverted.

For this purpose, the hot water shrinkage of the fibers constituting the core is in the range of 2 to 12%, and the hot water shrinkage of the fibers constituting the sheath is in the range of 5 to 15%. It is hopeful. Here, the hot water shrinkage ratio in the present invention is JISL
1013. Hot water shrinkage 2-1
Fibers in the 2% range include cupra, rayon,
Acetate and a fiber having a hot water shrinkage in the range of 5 to 15% include polyester and the like. Since the hot water shrinkage varies depending on fiber production conditions, the hot water shrinkage is in the above range. It is desirable to select manufacturing conditions that are within. In addition, in this invention, the kind of fiber is not specifically limited.

By forming a woven or knitted fabric containing at least a part of the core-sheath type composite yarn as described above, the woven or knitted fabric is excellent not only in water absorption and quick drying but also in moisture absorption even after a dyeing process. Is obtained.

In the water-absorbing quick-drying woven or knitted fabric of the present invention, the structure of the woven or knitted fabric is not limited, and the core-sheath type composite yarn is 100%
A woven or knitted fabric composed of a part of the core-sheath composite yarn on the skin side and not using the core-sheath composite yarn on the skin side may be used. In addition, the use and structure of the yarn such as the cross-weaving of the core-sheath type composite yarn and another yarn used in the present invention are not limited.

[0015]

EXAMPLES The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples.

[Example 1] As fibers constituting a core portion,
Using a cupra multifilament having a hot water shrinkage of 5.7%, a total fineness of 56 dtex, and a length of 30 filaments, and as a fiber constituting a sheath portion, a depth of 5 μ in the fiber axis direction.
A polyester multifilament of 24 filaments having a hot water shrinkage ratio of 9%, a total fineness of 66 dtex, and a cross section having a cross shape having a cross section of m is used. A sheath around the fiber constituting the core is used. The number of twists is 13
Double covering was performed in the S and Z directions at 00 times / m to produce a core-sheath type structural yarn. At this time, the weight ratio of the fibers constituting the core to the fibers constituting the sheath was 1: 3.
Subsequently, using a 24 G, 30-inch double knit circular knitting machine, a total fineness of 167 dtex on the open air side, a polyester crimped yarn of 48 filaments, and a total fineness of 16 on the skin side
Polyester multifilaments of 7 decitex and 144 filaments were knitted with the core-sheath type structural yarn to knit a two-layer structure knitted fabric. Next, the two-layer structure knitted fabric was immersed in hot water at 135 ° C. for 45 minutes and subjected to heat treatment, but the core and the sheath of the core-sheath type composite yarn were not inverted. The hot water treatment was performed using a liquid dyeing machine (manufactured by Hisaka Seisakusho). further,
The two-layered knitted fabric was subjected to a dyeing step, and a polyether compound was adsorbed to the two-layered knitted fabric in the dyeing step to perform a water absorbing process.

Example 2 As fibers constituting the core,
A cupra multifilament having a boiling water shrinkage of 5.7%, a total fineness of 56 decitex and a length of 30 filaments is used, and the fiber constituting the sheath portion has a depth of 5 μm in the fiber axis direction.
The core part is composed of two polyester multifilaments each having a groove of m, a cross section of a cross shape, a hot water shrinkage of 9%, a total fineness of 66 dtex, and 24 filaments. The core-sheath type structural yarn was produced by air-processing the fibers to be formed and the fibers constituting the sheath portion. At this time, the weight ratio of the fibers constituting the core to the fibers constituting the sheath was 3.2: 1. Subsequently, using a 24 G, 30 inch double knit circular knitting machine, a total fineness of 1
A 67-denitex, 48-filament polyester crimped yarn, a polyester multifilament of 167 decitex on the skin side, and a 144-filament polyester multifilament and the above-mentioned core-sheath type structural yarn were knitted and knitted to form a two-layer knitted fabric. Next, the two-layer knitted fabric is immersed in hot water of 135 ° C. for 45 minutes,
Although heat treatment was performed, the core and the sheath of the core-sheath type composite yarn were not inverted. The hot water treatment was performed using a liquid jet dyeing machine (manufactured by Hisaka Seisakusho) in the same manner as in Example 1. Further, the two-layer knitted fabric was subjected to a dyeing step, and a polyether-based compound was adsorbed to the two-layer knitted fabric in the dyeing step, thereby performing a water absorbing process.

Comparative Example 1 Using a 24 G, 30 inch double knit circular knitting machine, a polyester crimped yarn having a total fineness of 167 dtex and 48 filaments was placed on the outside air side.
A two-layer knitted fabric composed of a polyester multifilament of 144 filaments was knitted on the skin side, and subjected to a dyeing process. In addition, a water-absorbing process was performed by adsorbing the polyether-based compound to the two-layer structure knitted fabric in the dyeing step.

[Comparative Example 2] Using a 24 G, 30 inch double knit circular knitting machine, a polyester crimped yarn having a total fineness of 167 dtex and 48 filaments was placed on the outside air side.
A two-layer knitted fabric composed of 40th cotton was knitted on the skin side and subjected to a dyeing process.

The above Examples 1 and 2 and Comparative Examples 1 and 2 were evaluated for water absorbency, dryness, hygroscopicity and stickiness by the following methods. Table 1 shows the results.

The water absorption was evaluated by a dropping method specified in JIS-L1907. Drying property is JIS-L1096
It measured by the -8-25A method, and evaluated by the water retention after standing for 100 minutes. The hygroscopicity was evaluated by the weight increase rate after standing for 24 hours in an environment at a temperature of 20 ° C. and a relative humidity of 65%. The stickiness was determined by dropping 0.5 cc of water onto the surface of a metal roller rotating at a surface speed of 7 cm per second, contacting a sample having a width of 6 cm and a length of 15 cm, and measuring the frictional force (mN) after 5 minutes. evaluated.

[0022]

[Table 1]

In Table 1, the products of Examples 1 and 2 were excellent in water absorbency and dryness, as well as in moisture absorbency, and low in stickiness even after being subjected to dyeing. . On the other hand, in Comparative Example 1, since 100% of the polyester was used, the hygroscopicity was poor. In Comparative Example 2, the drying property was poor and the stickiness was high, which was unsatisfactory.

[0024]

EFFECT OF THE INVENTION The water-absorbing quick-drying woven or knitted fabric of the present invention is excellent in moisture absorption in addition to water absorption and quick drying even after being subjected to a dyeing process, so that it can be used for sportswear and casual wear. Even when used, excellent wearing comfort is obtained.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A41D 31/00 503 A41D 31/00 503G D02G 1/18 D02G 1/18 3/04 3/04 3/38 3/38 D03D 15/00 D03D 15/00 C D04B 1/00 D04B 1/00 B D06M 13/165 D06M 13/165 15/53 15/53 // D06M 101: 06 101: 06 101: 16 101: 16 F-term (reference) 4L002 AA07 AB00 AC07 BB01 DA03 DA04 EA03 FA02 4L033 AA02 AB03 AB05 AB06 AC07 BA14 CA48 4L036 MA04 MA05 MA33 MA39 PA21 PA41 PA46 RA03 RA25 UA25 4L048 AA13 AA20 AA28 AA37 AA54 AB18 AC15 DA07

Claims (5)

[Claims] 1. A core-sheath type composite yarn in which a core portion is composed of fibers having an official moisture content of 3.5% or more and a sheath portion is composed of fibers having an official moisture content of 1.0% or less. A water-absorbing quick-drying woven or knitted fabric, wherein the core and the sheath of the core-sheath type composite yarn are not inverted even if the woven or knitted fabric is treated in hot water at a temperature of 135 ° C. for 45 minutes. 2. The hot water shrinkage of fibers constituting the core is 2 to 2.
The water-absorbing quick-drying woven or knitted fabric according to claim 1, wherein the fiber constituting the sheath portion has a hot water shrinkage of 5 to 15%. 3. The water-absorbing quick-drying woven or knitted fabric according to claim 1, wherein the fibers constituting the sheath portion have been subjected to a water absorbing process. 4. The water-absorbing quick-drying woven or knitted fabric according to claim 1, wherein the fiber constituting the sheath portion is a fiber having a streak groove in a fiber axis direction. 5. The water-absorbing quick-drying woven fabric according to claim 1, wherein the fiber constituting the core is a regenerated fiber filament or a semi-synthetic fiber filament, and the fiber constituting the sheath is a synthetic fiber filament. knitting.