JP3532700B2 - Multi-layer structure yarn - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-layered structure yarn having excellent water absorption and drying properties, and more specifically, it is used for various sweat-related applications such as sports clothing fabrics and inner clothing fabrics. As a multi-layered yarn suitable for producing woven and knitted fabrics that have excellent water absorption, water retention and dryness required for sweating treatment fabrics used, and that have little or no wetness and stickiness. It can be used optimally.

[0002]

2. Description of the Related Art Conventionally, synthetic fibers such as polyamide fibers and polyester fibers, natural fibers such as cotton and wool, and rayon and cupra are used for producing woven and knitted fabrics having excellent water absorption and drying properties. We have proposed woven and knitted fabrics characterized by their water absorption, water retention, and drying properties by using the regenerated cellulose-based fibers described above and devising the yarn usage and texture structure in the woven and knitted fabrics. Among them, the yarn itself that constitutes the woven or knitted fabric is provided with functions such as water absorption, water retention, and drying properties, and when such a yarn is used to create a woven or knitted fabric, the water absorption and drying properties are excellent. Proposals for woven and knitted fabrics have been made. For example, Japanese Patent Application Laid-Open No. 60-215829 proposes a composite structure yarn made of fibers having different water retention performances. However, since the hydrophobic fiber having poor moisture absorption / water absorption performance is arranged in the innermost layer, the water absorption / water retention performance of the obtained composite structure yarn is not sufficient, and the dry performance has no significant feature. . Further, Japanese Patent Laid-Open No. 5-33234 proposes a spun yarn having a structure in which a water-repellent fiber bundle is wound around a water-absorbing fiber bundle and having a low wetting feeling. However, in this proposal, although the water-repellent fiber bundle is in the surface layer, it is suitable for a small amount of water treatment, but in the case of a large amount of water treatment, the spun yarn surface layer does not absorb water and is raised, so that the feeling of wetting becomes worse. There was a problem of feeling.

[0003]

DISCLOSURE OF THE INVENTION The present invention provides quick absorption of water at the surface layer of a multi-layered yarn and excellent water retention ability, and quick water transfer to the inner layer and / or middle layer of the multi-layered yarn and water diffusion capability. It relates to a related multi-layered yarn with excellent dryness, and is used for sweat-related cloths such as cloth for sports clothing and cloth for inner clothing, and even when a large amount of sweat is generated, the wearer feels wet and sticky due to sweating. An object of the present invention is to provide a multi-layer structure yarn that can be made into a comfortable material that is comfortable to wear and that does not cause discomfort such as clinging.

[0004]

According to the present invention, a yarn having a W-shaped single fiber cross section is used for at least one layer of a multilayer structure yarn, and the inner layer and / or the intermediate layer is crimped and stretched. The present invention relates to a multi-layer structured yarn, characterized in that the yarn has a ratio of 7.0% or less, and the surface layer thereof is a crimped yarn.

The present invention will be described in more detail below. In the present invention, the yarn having a W-shaped single fiber cross-sectional shape, which is used for at least one layer of the multilayer structure yarn, includes:
Examples include synthetic fibers such as polyamide fibers, polyester fibers, polyacrylonitrile fibers, polyvinyl fibers, polypropylene fibers, and polyurethane fibers having a W-shaped single fiber cross-sectional shape. Not limited to synthetic fibers, semi-synthetic fibers and regenerated fibers may be used as long as the single fiber cross-sectional shape is W type. Further, fibers of the same type of fiber having a W-shaped single fiber cross-sectional shape may be used as 100% yarns, or may be used as a composite mixed yarn with other type fibers having a W-shaped single fiber cross-sectional shape. Further, it may be a composite fiber yarn in which a single fiber cross-sectional shape shows another cross-sectional shape and a similar fiber or another fiber. It is preferable to use 100% polyamide yarn or polyester fiber having a W-shaped cross-section as a single yarn.

As the yarns having a crimp elongation of 7.0% or less constituting the inner layer and / or the intermediate layer, polyamide-based fibers,
Synthetic fibers such as polyester fibers, polyacrylonitrile fibers, polyvinyl fibers, polypropylene fibers, polyurethane fibers, and semi-synthetic fibers, recycled fibers, natural fibers, etc., with a crimp elongation of 7.0% or less The single fiber cross-sectional shape of the fiber may be a W-shaped cross-sectional shape, or a modified cross-sectional shape such as a round shape, a triangular shape other than the W shape, a pentagonal shape, a star shape, or a hollow shape. It doesn't matter. The yarn may be a composite mixed yarn such as synthetic fiber and recycled fiber. That is, any fiber yarn may be used as long as the crimp elongation is 7.0% or less from the viewpoint that the wetting feeling and stickiness during use are reduced. More preferably,
A fiber yarn having a crimp elongation of 5.0% or less is used.

The crimped yarn constituting the surface layer may be any crimped yarn, and the same polyamide fibers, polyester fibers and polyacryl as those used in the yarns constituting the inner layer and / or the intermediate layer. Nitrile-based fibers, polyvinyl-based fibers, polypropylene-based fibers, synthetic fibers such as polyurethane-based fibers, and yarns such as semi-synthetic fibers and recycled fibers can be used, and the single fiber cross-sectional shape of such fibers is not particularly limited,
Further, the fiber may be a crimped yarn of 100% similar fiber, or a composite mixed filament yarn with other fiber may be a crimped yarn. A crimped yarn of 100% polyamide fiber or polyester fiber is preferable, and a crimped yarn of 100% polyamide fiber or polyester fiber having a W-shaped single fiber cross section is more preferable. More preferably, the crimp elongation of such crimped yarn is 10.
The yarn is greater than 0%.

By making a difference between the crimp elongation rate of the crimped yarn constituting the surface layer and the crimp elongation rate of the yarns constituting the adjacent inner layer and / or intermediate layer, the water absorbed in the surface layer is reduced. The smooth transition to the middle and inner layers reduces the wetting and stickiness of the surface layer of the multi-layer structure thread, and as a result, does not give the wearer the feeling of discomfort, stickiness, or clinging to more sweat. It can be a multi-layered structure yarn that can form a comfortable and comfortable material.

The crimp extension ratio referred to in the present invention means JIS-L.
-1090 (1992) Synthetic fiber filament Bulky processed yarn test method, 5.7 Stretchability B method (measured by bundling 10 fibers). The method is as follows. The sample pieces used for measurement were subjected to the following pretreatment. The pretreatment of a sample piece is carried out by first making 5 samples by putting them on a rod so as not to damage the sample and forming a ring, and applying a load of 2 mgf x sample indicated denier number to each. Next, these 5 samples are put together into about 5
Immediately remove the weight after tightly tying the upper and lower parts with a cotton thread at intervals of 0 cm. Subsequently, a dry heat treatment is performed at 90 ° C. for 15 minutes while applying a load of 0.3 mgf × 10 × sample display denier, and after the weight is removed, the sample is left to stand overnight.

The sample pieces of one bundle of 10 pieces thus pretreated were subjected to an initial load of 2 mgf × 10 × the sample display denier number based on the JIS-L-1090, 5.7 stretchable B method. In this state, the upper part of the sample piece is clamped so that the test length becomes about 20 cm, and the sample length (a) after 30 seconds is accurately measured. Next, a load of 0.1 gf × 10 × sample display denier is applied and the sample length (b) after 30 seconds is accurately measured. Then, the crimp elongation rate (%) is calculated by the following formula.

Crimping elongation rate (%) = [(ba) / a] × 100 By the way, what is necessary to obtain a yarn having a crimp elongation rate of 7.0% or less which constitutes the present invention? Although the yarn processing method may be used, in the false twist crimping processing method which is relatively inexpensive and easily available, the number of false twists is set lower than the normal set number, or the heater temperature is set lower than usual. The desired yarn can be obtained by carrying out a method such as applying or both of them.

Further, the crimped yarn constituting the present invention may be a crimped yarn using any yarn processing method,
Usually, a false twist crimped yarn obtained by a generally known false twisting method can be optimally used. The fineness of the yarn fibers constituting the multilayer structured yarn of the present invention is not particularly limited, but in consideration of its use for clothing, a desirable range is about 0.1d to 5d. In the case of cloth for sports clothing, which must withstand particularly severe conditions, 1d to 5d
Is more preferable, and 0.1d to 3d is more preferable in the case of the cloth for inner garment where soft touch and texture are important.

The multi-layer structured yarn referred to in the present invention is a yarn having a two-layer, three-layer or more layer structure, and any layer-structured yarn as long as it is a two-layer structure or more layer-structured yarn. It doesn't matter. Further, in the multi-layer structure yarn referred to in the present invention, each of the surface layer, the intermediate layer, and the inner layer does not need to be completely separated and independent, and it may be in a state of apparently having a layer structure, and each layer is constituted. The filament monofilaments may be partially mixed with the filament monofilaments constituting the adjacent layers.

The multilayer structured yarn may be prepared by any method, for example, a yarn obtained by a method for producing a covering yarn using a covering machine or an air entanglement using a high-speed fluid jet nozzle. In the processing method, when two different kinds of yarns are mixed and subsequently false twisted, one of them is covered by the crimping degree to cover the other, resulting in a layer structure, or 2 After entanglement of yarns of different types of elongation, false twisting is performed, and a yarn of high elongation is wound around a yarn of small elongation to form a layered structure, or a high-speed fluid jet nozzle is also used. In the air entanglement processing method used, one in which two different types of yarns are fed with a feed difference and sent out so that one of them covers the other and forms a layered structure. Furthermore, by covering other layer yarns with the layer structure yarn obtained by the air entanglement processing method, it is possible to obtain a further layer structure yarn. Also, after making a woven or knitted fabric with a twisted yarn made by twisting two different types of yarns, one of the two types of yarns is wound around the other by the post-dyeing process so that a layer structure is formed in the knitted fabric. Or a composite yarn in which two different types of yarns are air-entangled and then false twisted to form a woven or knitted fabric, and a layer structure is formed in the woven or knitted fabric after dyeing. It doesn't matter. Considering that it is often desired to make a woven or knitted fabric as thin and light as possible, the multi-layer structure yarn desired for preparation is a two-layer structure yarn obtained by an air entanglement processing method or a two-layer structure after dyeing and post-processing. A twisted yarn or a processed yarn obtained by false twisting after air entanglement is preferable.

Further, in order for the multi-layer structure yarn of the present invention to be a multi-layer structure yarn which is more excellent in water absorption / water retention performance and also in drying property, a yarn constituting the multi-layer structure yarn of the present invention. It is preferable that the fiber surface of the strip is made hydrophilic.
In particular, when synthetic fibers such as polyamide fibers and polyester fibers are used as the constituent yarns of the multi-layer structure yarn, it is necessary to make the fiber surface hydrophilic. The yarn referred to here means a yarn or a crimped yarn that constitutes the multilayer structured yarn of the present invention.

By making the surface of the fiber hydrophilic, the water absorption rate at the surface layer of the multi-layered yarn can be further improved, and at the same time the water transfer rate and the water diffusion rate to the inner layer and / or the intermediate layer of the multi-layered yarn can be improved. As a result, the yarn can be a multi-layer structure yarn that can form a comfortable and comfortable material that does not give the wearer a feeling of discomfort, stickiness, or clinging to a larger amount of sweat.

Any method may be used as a method for hydrophilizing the fiber surface of the yarn fibers constituting the multilayer structured yarn of the present invention. It may be wound up in a form, and may be subjected to a hydrophilic treatment in the same manner as a dyeing treatment.Also, after the multilayer structured yarn is woven or knitted, a hydrophilic treatment may be performed as a post-dyeing treatment treatment.
It is not limited to these. As the hydrophilizing agent, a known hydrophilizing agent such as polyethylene glycol-based resin agent may be used, and the hydrophilizing treatment may be performed at the recommended concentration by using a recommended formulation such as dipping treatment, padding treatment, spraying treatment and the like. . Preferably, the obtained multi-layered structure yarn is made into a woven or knitted product and then subjected to a dipping treatment with a hydrophilizing agent.
When the yarn fibers constituting the multilayer structure yarn are originally hydrophilized, the fiber surface may be hydrophilized, but it is not particularly necessary.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below with reference to examples. The yarn used in Examples and Comparative Examples,
The evaluation of the multi-layer structure yarn prepared by using the yarn, and further the water absorption, water retention, wet feeling, sticky feeling and drying performance of the multi-layer structure yarn is as follows.

75 denier having a W-shaped cross section, 30
The raw yarn of polyester multifilament of filament is used as the yarn 1. This thread 1 is L manufactured by Mitsubishi Heavy Industries, Ltd.
The S-2 type false twisting machine performed false twisting under the conditions of a false twist number of 3,200 T / m, a heater temperature of 210 ° C., and a yarn speed of 60 m / min to prepare a yarn 2 which is a crimped yarn. Raw yarn of polyester multifilament of 75 denier and 36 filaments having a round cross section is used as the yarn 3. This yarn 3 was false-twisted under the same conditions as the yarn 2, and a yarn 4 which was a crimped yarn was created.

Further, raw silk of polyester multifilament having 30 denier and 30 filaments having a W-shaped cross section (yarn 1) and raw silk yarn of polyester multifilament having 36 denier and 35 filament having a round cross-section (yarn) 3) is low-temperature false twisted under the conditions of a false twisting number of 2,700 T / m, a heater temperature of 170 ° C., and a yarn speed of 60 m / min using an LS-2 type false twisting machine manufactured by Mitsubishi Heavy Industries, Ltd. Article 5 and thread 6 were prepared. The respective crimp elongations are 0.0% for the yarn 1, 12.6% for the yarn 2, 0.0% for the yarn 3, 17.3% for the yarn 4, and 3. 5
% And the yarn 6 was 1.1%. The crimp elongation rate of each yarn is summarized in Table 1.

Subsequently, Mach Air Crimper 3 manufactured by Murata Machinery Co., Ltd. was used in various combinations of these 6 types of yarns.
An air entangled yarn was prepared by using a 3H type processing machine with the feed rate of one yarn being 10% and the feed rate of the other yarn being 5%. The air entangled yarn thus obtained was in a state in which a yarn having a feed rate of 5% was wound around a yarn having a feed rate of 5%, and was a two-layer structure yarn according to the present invention. In addition, the Ishikawa Seisakusho Co., Ltd. DTB type twisting machine
A twisted yarn was prepared by twisting various types of yarns at a twist number of 300 T / m.

The air-entangled yarns and the plied yarns thus obtained were 22 gauge back kashiko knitted fabrics using 100% of each yarn. All the knitted fabrics made by Urakako are refined, 13
After dyeing and soaping for 30 minutes at 0 ° C., SR-1000 manufactured by Takamatsu Yushi Co., Ltd. was used for hydrophilic treatment at 100 ° C. for 30 minutes using 5% owf.

[0023]

[Example 1] The feed rate of the yarn 4 is 10% and the feed rate of the yarn 5 is 5% so that the surface layer is the yarn 4 and the inner layer is the yarn 5.
As a result, a two-layer structured yarn was produced by air entanglement processing. Urakako knitted fabric (knitted fabric E-) using this two-layer structure yarn
Got

[0024]

[Embodiment 2] The feed rate of the yarn 2 is 10% and the feed rate of the yarn 6 is 5% so that the surface layer is the yarn 2 and the inner layer is the yarn 6.
As a result, a two-layer structured yarn was produced by air entanglement processing. Urakako knitted fabric (knitted fabric E-) using this two-layer structure yarn
Got

[0025]

[Example 3] Using yarn 1 and yarn 4, a twisted yarn was prepared under the conditions already described, and a back kashiko knitted fabric (knitted fabric N-) was obtained using this twisted yarn. When the magnifying glass was used to observe the state of the plied yarn in the Ura-shiko knitted fabric after the dyeing and hydrophilization treatment, the yarn 4 was wrapped around the yarn 1, and the surface layer was the yarn 4 and the inner layer was the yarn 1-2. It was a layered structure thread.

[0026]

[Example 4] Using yarn 2 and yarn 3, a plied yarn was prepared under the conditions already shown, and using this plied yarn, a back kashiko knitted fabric (knitted fabric N-) was obtained. When the magnifying glass was used to observe the state of the plied yarn in the Urakako knitted fabric after the dyeing and hydrophilization treatment, the yarn 2 was wrapped around the yarn 3, and the surface layer was the yarn 2 and the inner layer was the yarn 3. It was a layered structure thread.

[0027]

[Comparative Example 1] The yarn 4 has a feed rate of 10% and the yarn 6 has a feed rate of 5% so that the surface layer is the yarn 4 and the inner layer is the yarn 6.
As a result, a two-layer structured yarn was produced by air entanglement processing. Urakako knitted fabric (knitted fabric E-) using this two-layer structure yarn
Got

[0028]

[Comparative Example 2] The feed rate of the yarn 2 is 10% and the feed rate of the yarn 4 is 5% so that the surface layer is the yarn 2 and the inner layer is the yarn 4.
As a result, a two-layer structured yarn was produced by air entanglement processing. Urakako knitted fabric (knitted fabric E-) using this two-layer structure yarn
Got

[0029]

[Comparative Example 3] Using the yarn 3 and the yarn 4, a plied yarn was prepared under the conditions already shown, and a back kashiko knitted fabric (knitted fabric N-) was obtained using this plied yarn. When the magnifying glass was used to observe the state of the plied yarn in the back kashiko fabric after dyeing and hydrophilizing treatment, the yarn 4 was wrapped around the yarn 3, and the surface layer was the yarn 4 and the inner layer was the yarn 3. It was a layered structure thread.

[0030]

[Comparative Example 4] Using the yarn 2 and the yarn 4, a twisted yarn was prepared under the conditions already shown, and a back kashiko knitted fabric (knitted fabric N-) was obtained using this twisted yarn. When the magnifying glass was used to observe the state of the plied yarn in the Ushikako fabric after dyeing and hydrophilization, the yarn 4 was wrapped around the yarn 2 and the surface layer was the yarn 4 and the inner layer was the yarn 2. It was a layered structure thread.

Next, the knitted fabrics obtained in Examples 1 to 4 and Comparative Examples 1 to 4 were evaluated for water absorbency, water retention, wet feeling, sticky feeling, and dryness. The results are shown in Table 2.
It was the street. Regarding water absorption, JIS-L-10
18 (1990), 6.37.1 Water absorption rate B method (Bayrec method). However, the water rising height (mm) after 3 minutes was read.

Regarding the water retention, after measuring the initial weight (a) of the 10 cm square fabric, the fabric is immersed in a sufficient amount of water to absorb water for 30 minutes. After 30 minutes, the cloth is dehydrated for 30 seconds in a home washing machine, and the weight (b) after dehydration is measured.
The water retention rate was calculated by the following formula using the initial weight (a) and the weight after dehydration (b). Water retention rate (%) = [(b−a) / a] × 100 The water retention rate represented by this means that the larger the value, the higher the water retention rate, and the water retention rate is the water retention rate in the evaluation of the present invention. Used as.

The wet feeling and sticky feeling are evaluated as follows. First, 0.3 ml of water is placed on an acrylic plate,
Place a 10 cm square cloth on top of it, 0.3 gf / c
After allowing the cloth to sufficiently absorb water for 30 seconds while applying a load of m ² , the cloth thus absorbed was put on the upper arms of 10 panelists, 5 male and 5 female respectively, and sensory evaluation of wetness and stickiness was performed. None of the 10 panelists who performed sensory evaluation felt the exact opposite way, and although the feelings were somewhat different, the 10 panelists also felt the same tendency. In addition, the amount of water of 0.3 ml placed on the acrylic plate is 1
The amount was sufficient to wet and spread over the entire 0 cm square fabric.

The dryness was evaluated by first measuring 10 for each fabric.
The initial weight (A) of the squared fabric is measured, and the fabric is placed on a constant temperature plate placed horizontally at a constant temperature of 32 ° C., and water is fed from the back of the fabric at a rate of 0.2 ml / min for 10 minutes with a metering pump. To give excess moisture to the fabric. After 10 minutes, the water supply was stopped, the fabric weight (B) at this time was measured, and the back face of the fabric was placed on a constant temperature plate placed at a constant temperature of 32 ° C. 10
Leave for a minute. After leaving for 10 minutes, the fabric weight (C) again
Was measured, and the dryness was evaluated by the following formula. Dryability (%) = [(B−C) / (B−A)] × 100 The dryness represented by this is a value from 0 to 100, and the larger the value, the higher the dryness. Represents The dryness evaluation method shown here is an experimental evaluation method assuming that sweating starts at the start of exercise and stops sweating after the exercise, and the sweat absorbed by the cloth is 200 g / m ² · h.
It is assumed that the person exercised about r for 1 hour and then rested for 10 minutes. The amount of sweat absorbed by the fabric is 20
The exercise of about 0 g / m ² · hr can be thought of as exercise such as basketball, tennis, running, etc. taken seriously for about 1 hour, and when a commercially available cotton T-shirt is worn on the jacket, a cotton T-shirt is usually used. Becomes soaked with sweat.

[0035]

[Table 1]

[0036]

[Table 2]

[0037]

EFFECTS OF THE INVENTION The multi-layer structure yarn of the present invention has excellent water absorption / retaining ability on the surface of the multi-layer structure yarn, and also has a quick transfer of water to the inner layer and the intermediate layer and a drying property related to the water diffusion ability. An excellent multi-layered structure yarn, and a woven or knitted fabric produced using such a multi-layered structure yarn has little or little wetting and stickiness when sweating a small amount as well as a large amount of sweat, and has excellent dryness. Therefore, it is useful as a fabric having a sweat treatment function.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 61-201037 (JP, A) JP 3-113044 (JP, A) JP 62-238842 (JP, A) JP H2- 91242 (JP, A) JP 7-189062 (JP, A) JP 61-239035 (JP, A) JP 57-25474 (JP, A) JP 3-174043 (JP, A) JP-A-8-120534 (JP, A) Actual development 60-136372 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) D02G 1/00-3/48

Claims (2)

(57) [Claims] 1. A yarn having a W-shaped single fiber cross-sectional shape is used for at least one layer of a multilayer structure yarn, and the inner layer and / or the intermediate layer has a crimp elongation of 7.0% or less. A multi-layered structured yarn comprising a yarn and a surface layer formed of a crimped yarn. 2. The multilayer structured yarn according to claim 1, wherein the fiber surface of the yarn constituting the multilayer structured yarn is hydrophilized.