JPH05331732A - Conjugate multifilament - Google Patents

Abstract

PURPOSE:To obtain conjugate multifilaments suitable for a material for woman's clothing, having excellent comfortableness in sweat and good handle. CONSTITUTION:Conjugate multifilament comprises filaments having >=1 denier as a core and polyester filaments which have a hollow part with >=1.3 denier fineness of equivalent single yarn and >=5% area ratio and contain >=0.1% fine pore-forming agent mainly arranged in an outer layer wherein the filaments in the outer layer substantially wrap the filaments in the inner layer and bundle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite multifilament suitable as a material for clothes which is comfortable against sweat and has a good texture, particularly as a material for women's clothing.

[0002]

2. Description of the Related Art Conventionally, the field of women's clothing, especially dresses,
Many polyester filaments have been used in thin fields such as blouses and suits. This is because the characteristics of polyester fiber, such as drape, touch, luster, and modification, give a silky texture and a high-quality texture, but all of them emphasize sensitivity and are comfortable to wear. There were few things to think of.

[0003]

However, the polyester fiber is originally a hydrophobic fiber and does not have a function of absorbing water or absorbing moisture, and the feeling of stickiness or stickiness caused when it is put on clothes is woven or knitted. Although it may be improved slightly depending on the design, it was not avoided due to the nature of the material.

In the field of women's clothing, the beauty of appearance is regarded as an important point, and although it is not comfortable against sweat for the above-mentioned reasons, research on such points has not progressed so much.

[0005]

The present invention adopts the following means in order to solve the above-mentioned problems, that is, the present invention is equivalent to a filament having a single yarn fineness of 1 denier or less is mainly arranged in the inner layer. The single yarn fineness is 1.3 denier or more and has an area ratio of 5% or more, which is a substantial hollow portion.
A composite multifilament characterized in that a polyester filament containing 1% or more of a micropore forming agent is mainly arranged in an outer layer, and the filament of the outer layer substantially encloses and bundles the filament of the inner layer. ..

The present invention will be described in detail below. First, the multifilament arranged in the inner layer has a single yarn fineness of 1 denier or less, preferably less than 1 denier, and more preferably 0.1 to 0.8 denier. This is because the liquid phase sweat is transferred from the outer layer on the skin side to the inner layer by utilizing the capillary phenomenon of the ultrafine fibers in the inner layer, and the heat of the sweat in the liquid phase itself is taken and vaporized. Further, in order to effectively generate the capillary phenomenon, it is necessary to set the fineness to 1 denier or less. If it exceeds 1 denier, sweat transfer is less likely to occur. In addition, the fibers themselves do not hold sweat, but the fibers need to be hydrophobic fibers in order to hold the sweat in the fiber gaps and remove the heat of the sweat itself to be vaporized, and polyester fibers are preferable. The single yarn having a denier of 1 denier or less is usually 10 to 60% by weight, preferably 30 to 60% by weight, based on the whole yarn. This is because if it is less than 10% by weight, the capillarity is less likely to occur, and if it exceeds 60% by weight, it becomes difficult to diffuse sweat.

Next, the polyester filament disposed in the outer layer has a hollow portion having a thickness of 1.3 denier or more in equivalent fineness and 5% or more in area ratio, and 0.1% by weight.
It contains the above-mentioned fine pore-forming agent. Equivalent single yarn fineness of polyester filament is 1.3 denier or more and 3.5
Denier or less is preferable, more preferably 1.5
Greater than denier and less than 2.5 denier is good. If the equivalent single yarn fineness of the polyester filament in the outer layer is less than 1.3 denier, the transfer of liquid phase sweat to the inner layer is not smoothly performed. Further, if it exceeds 3.5 denier, the texture of the fabric becomes rough, which is not the intention of the present invention.

In the present invention, arranging the polyester fiber in the outer layer may make the best use of the characteristics of the polyester particularly suitable for the clothing, but it diffuses liquid phase sweat to the surface of the fiber and transfers it to the inner layer. This is because the hydrophobic fiber must be used for the purpose. In addition, the polyester filament of the outer layer is preferably 40 to 90 weight of the whole fiber.
If it is less than 40% by weight, it becomes difficult for sweat to diffuse, and 90
When it exceeds the weight%, the capillarity is less likely to occur.

Further, in the present invention, the hollow fiber is used at least in the outer layer because the inner layer is one having a fine single yarn fineness, so that the elasticity and the stiffness are eliminated, and conversely, the single fiber is too much to give the elasticity and the stiffness. This is because the use of a thicker one gives a rough and stiff feel, and cannot be used for sensitive clothing that brings texture and texture to life. The hollow ratio of the hollow portion is 5% or more, preferably 5 to 20%. In addition, the inclusion of the fine pore forming agent does not cause the disadvantage that the fine pores are revealed by the post-processing, and the filaments having a fine single yarn fineness are lightly dyed, and the fine pores eliminate a slimy feel and a refreshing dryness. This is to express the touch, which makes it possible for the first time to express the comfort and high texture of the new synthetic fiber due to the phenomenon of stuffiness caused by the transfer of sweat.

As the fine pore forming agent, TiO ₂ which is usually used as a matting agent is preferably used.
Fine ceramics and metal oxides which are finely powdered and have good dispersibility in polyester may be used. Further, a compound such as polyethylene glycol which is easily removed by post-processing can be used.

Further, the equivalent denier in the present invention is expressed by converting the actual outer diameter (outer circumference) including the hollow portion into denier, and the actual denier becomes thinner as the hollow portion becomes larger. This is because the diffusion and transfer of sweat is determined by the equivalent denier (diameter) rather than the actual denier.

The polyester fiber as used herein includes not only 100% of normal homopolyester but also copolymerized with known modifiers such as sodium metal salt, isophthalic acid and flame retardant. Further, as the cross-sectional shape, known ones such as trilobal to multilobal, flat, and U-shaped are preferably used as long as the effects of the present invention are not impaired. Further, the hollow portion may be not only circular but also deformable, may be partially connected to the outside, or may be plural.

Further, the outer filaments are arranged so as to wrap the inner layer filaments in order to more effectively exert sweat migration in combination with the outer layer filaments and the inner layer filaments of the single yarn fineness. The filaments of the outer layer are arranged so as to be wrapped around the filaments of the inner layer in order to arrange the filaments of the inner layer without disturbing the filaments of the outer layer. It is preferable to apply it, but it is not limited to this as long as the substantial effect is the same. A general double twister or a ring twisting machine is suitable for the actual twist, but the twist number is preferably a twist coefficient K ≧ 2000 when expressed in terms of a twist coefficient (metric type). Furthermore, 2000-35000 are preferable, and especially 3000-
20000 is preferable. Here, twist coefficient K = twist number × D
^The twist factor is calculated as ^1/2 . Here, D is the total denier of a plurality of multifilament yarns. The preferred range of total denier is 30 to 200 denier, more preferably 50 to 150 denier.

The mechanism of sweat perspiration and dispersal in the composite multifilament of the present invention will be briefly described below. Sweat (both gas phase and liquid phase) diffused on the surface of the polyester filament of the outer layer on the skin side is separated from the ultrafine layer of the inner layer. It moves by the capillary phenomenon of the multifilament fiber, the sweat of the liquid phase deprives the heat of the sweat itself and vaporizes, and since it is in the vapor phase, it moves to the outside layer of the outside air due to the difference in water vapor pressure between the skin side and the outside air side, The sweat is released quickly.

The method for producing the composite multifilament is not particularly limited, but a method of false twisting one multifilament thread while overfeeding, a method of differently feeding a plurality of multifilament threads, and one multifilament Examples thereof include a method of electrically opening the yarn and wrapping the other multifilament, a method of false twisting while overfeeding one multifilament, and a method of forming a two-layer structure yarn.

[0016]

【Example】

Example 1, Comparative Examples 1 to 3 Multifilament A under the conditions described in Table 1 below,
A polyester multifilament B that was electrically opened was entangled and composited, and then twisted with a twist coefficient K = 5500 to produce a composite multifilament. Then go through this thread,
Used as a weft, a 2/1 twill having a warp density of 150 yarns / inch and a weft density of 95 yarns / inch was woven, and dyeing was carried out under processing conditions including ordinary weight reduction.

The texture of the fabric is the sensory evaluation by an expert,
For the maximum humidity in clothes, the woven fabric is sewn into a blouse, and this is simulated in clothes (JP-A-58-21164).
No.), 20 ° C., 65% RH simulated skin temperature 3
The measurement was performed at 5 ° C. The sample of Example 1 had a maximum humidity in clothes of 54.5%, was in a comfortable range of 50 ± 10% from the viewpoint of comfort and sweat comfort, and was comfortable in the wearing test. Also, in terms of texture, there are dry touches due to fine pores on the surface of the filament in the outer layer due to fine particles falling off and bulging due to elasticity, stiffness and difference in yarn length in the hollow part, and bulkiness and sharpness due to twisting yarn are also good. there were.

In Comparative Example 1, the hollowness of the filament in the outer layer portion was low, the number of fine pores due to the dropping of fine particles was small, the firmness and the stiffness were insufficient, and a slightly slimy feeling was obtained.
In Comparative Example 2, the single filament fineness of the inner layer filament is about 1.5.
Since it was thick and denier, the maximum humidity inside clothes was high at 65.0%, which was inferior in terms of comfort. In Comparative Example 3, since the single yarn fineness of the outer layer filament is as thin as 1.08 denier in equivalent single yarn fineness, the texture is too soft and the maximum clothes humidity is high at 63.5%, which is also inferior in terms of comfort. It was a thing. Fine particles of kaolinite were used as the fine particles.

[0019]

[Table 1]

[0020]

EFFECTS OF THE INVENTION According to the present invention, a composite multifilament which is suitable as a material for clothes which is comfortable against sweat, particularly as a material for women's clothing, can be obtained, and is good in the field of women's clothing where only sensitivity has been emphasized until now. You can get a nice clothes climate.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location D03D 15/00 D 7199-3B E 7199-3B

Claims (1)

[Claims] 1. A filament having a single yarn fineness of 1 denier or less is mainly arranged in an inner layer, and an equivalent single yarn fineness is 1.
A polyester filament having a hollow portion of 3 denier or more and an area ratio of 5% or more and containing 0.1% or more of a micropore forming agent is mainly disposed in the outer layer, and the outer layer filament substantially includes the inner layer filament. A composite multifilament characterized in that it is wrapped and focused as a whole.