JPH05331711A - Conjugate fiber of different denier - Google Patents

Abstract

PURPOSE:To obtain conjugate fiber of different denier having a fiber structure capable of maintaining comfortableness to wear by making moisture emitted from human bodies ideally migrate in its development into uses of clothes. CONSTITUTION:The objective conjugate fiber of different denier is island-in-sea type conjugate fiber composed of the island component divided into >=16 parts, an outside fiber group, arranged on the outermost side and surrounding fiber arranged on the inside and an inside fiber group. The outside fiber group has >=1.8 denier single filament denier and the inside fiber group has <=1 denier single filament denier. This conjugate fiber is constructed so as to provide >=3 value of the single filament denier of the outside fiber group/single filament denier of the inside fiber group.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a different denier composite fiber having excellent comfort, and more particularly, a different denier composite fiber having a fiber structure capable of maintaining comfortable wearing by ideally moving the moisture generated by the human body. The present invention relates to a composite fiber for denier mixed yarn.

[0002]

2. Description of the Related Art Heretofore, as a material for sports clothes, 100% natural fiber yarn, blended yarn of natural fiber and polyester or polyamide, or 100% polyester or polyamide yarn has been used.

By the way, there are various characteristics required as a material for sports clothing, and among them, strength, wear resistance, stretchability, washing resistance and the like have different requirements depending on the type of competition, but during exercise or hot environment. Eliminating discomfort due to high humidity between the skin surface and clothes due to sweating or dead steaming is a required characteristic that is common to all types of items, and matches the required characteristic for general clothing.

Conventionally, hydrophilic hemp and natural fibers typified by cotton have been mainly used for hot and humid summer clothes and sports clothes with a large amount of sweat. However, because it is lighter (thinner), more tougher, and requires high color development and fastness, natural fibers cannot handle it, and attempts have been made to combine them with synthetic fibers (blend or blend). Is not enough.

Further, in order to pursue comfort in clothes, a high-order multi-layered yarn, which realizes the concept of a multilayer structure knit in which sweat is quickly absorbed and quickly diverged, has been proposed. Since it is produced through the spinning process, it has low productivity and cost.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks and provides a composite fiber for different denier mixed yarn, which is excellent in productivity and comfort.

[0007]

Means for Solving the Problems The present invention is a so-called sea-island composite fiber in which an island component is surrounded by a sea component and separated in a subsequent step, and the island component does not dissolve at all in a solvent of the sea component, Alternatively, it is composed of a fiber-forming thermoplastic polymer satisfying the relationship that the dissolution rate is slower than that of the sea component, and in the arrangement of the single yarn in the cross section of the composite fiber, the yarn composed of the island component is
It is composed of a fiber group divided into the above and arranged on the outermost side and surrounding the inner fiber, and a fiber group arranged on the inner side and divided by the fineness from the outer fiber group, and the outer fiber group is a single yarn denier. The inner fiber group is composed of yarns of 1.8 denier or more, the inner yarn group is composed of yarns of 1 denier or less, and the value of outer yarn single yarn denier / inner yarn single yarn denier is 3
It is a different denier composite fiber characterized by being configured as described above.

The polymer used as the island component and the sea component in the present invention is a fiber-forming thermoplastic polymer, and the island component does not dissolve at all in the solvent in which the sea component dissolves, or has an extremely high dissolution rate compared to the sea component. A slow polymer combination is required. As the combination of the sea component / island component, polyamide / polyester, polyether / polyester, polystyrene / polyester, polyester / polyamide, etc. are easily conceivable, and even combinations such as polyester / polyester, polyamide / polyamide, It suffices that the sea component can be easily eluted by blending other components, for example, so that the island component has a much slower dissolution rate than the sea component in the solvent in which the sea component dissolves.

As described above, the solvent used in the present invention may be one which is insoluble in the solvent or has an island component resin having a sufficiently slower dissolution rate than the sea component resin. If a polyester-based polymer is used as the solvent, an alkaline aqueous solution can be used as the solvent.If a polyamide is used as the sea component, an organic acid such as formic acid or an organic solvent such as chloroform can be used as the solvent. It is especially preferable to use an alkaline solution that can be used in the general post-processing treatment, because it is advantageous in terms of treatment cost and equipment.

Also, when polyester is used as the residual component, the eluting component is a modified polyester such as a water-soluble polyester or an easily eluting polyester such as a polyester blended with polyalkylene glycol, so that an alkaline aqueous solution is used as a solvent. Can be used to selectively elute the eluted components.

Further, in order to impart a special function, the island component may contain additives such as a matting agent, an antistatic agent and a lightproofing agent. Furthermore, in order to eliminate the discomfort caused by humidification between the skin surface and clothes due to sweating or dead steam during exercise or hot environment and to maintain comfortable wearing, at least all of the fibrin surrounding the outside is maintained. In addition, it is a polyester system containing 0.5 to 3% by weight of inert fine particles having an average particle diameter of 0.3 μm or less, and the fiber surface is roughened by using an alkali treatment applicable to the conventional processing process. Can be
As a result, the hydrophilicity of the fibers is increased, and discomfort due to humidification between the skin surface and clothes due to sweating or dead steam during exercise or hot environment can be more efficiently eliminated.

In this case, as the sea component, 0.5 to 3% by weight of inactive fine particles having an average particle size of 0.3 μm or less are used.
In the combination with the contained polyester, it is more preferable to use a polymer whose dissolution by an alkaline aqueous solution is extremely fast, because the sea component can be removed and the surface of the polyester fiber can be roughened at once. For example, kaolin is used as the inert fine particles, and the elution component is removed by alkali treatment,
Furthermore, if the residual component is reduced by 20%, the roughness of the fiber surface will increase, and the hydrophilicity of the fiber will increase, eliminating the discomfort caused by the high humidity between the skin surface and clothes, and providing a comfortable wearing comfort. Can be maintained.

In the present invention, the island component is divided into 16 or more, and the single yarn denier of the fiber group that surrounds at least the outer side and the single yarn denier of the fiber group that is enclosed inside are the single yarn denier of the outer fiber group. The yarn denier is composed of yarns having a denier of 1.8 or more, the single yarn denier of the inner fiber group is composed of yarns of 1 denier or less, and the value of the outer single yarn denier / the inner single yarn denier is 3 or more. You have to satisfy the relationship. If this condition is not satisfied, the inclusion of the fibers that are surrounded by the fibers that surround the outside is insufficient, and it is possible to maintain comfortable wearing by ideally moving the moisture generated by the human body. This is because you cannot get

In the present invention, the yarn composed of the island component is divided into 16 or more. Here, if the number of divisions is less than 16, it is not preferable because it is impossible to obtain a fibrous structure capable of maintaining comfortable wearing by ideally moving the moisture generated by the human body.

The outermost fiber group has a denier of 1.8 or more. Below 1.8 denier, the fibers that surround the outside cannot fully enclose the fibers that are surrounded by the inside, so that the moisture generated by the human body is ideally moved to provide a comfortable fit. This is not preferable because it has a drawback that a fiber structure capable of maintaining the above can not be obtained.

The inner fiber group is less than 1 denier. When the denier exceeds 1 here, the fibers surrounded by
The fibers that surround the outside cannot be fully encased,
Therefore, it is not preferable because a fiber structure capable of maintaining comfortable wearing cannot be obtained by ideally moving water generated by the human body.

The outer single yarn denier / inner single yarn denier value must be 3 or more. Here, if the relationship becomes less than 3, there is a drawback that when the fabric is made, it is impossible to obtain a fiber structure capable of maintaining comfortable wearing by ideally moving the moisture generated by the human body. It is not preferable because it comes.

In the present invention, the dissolution of the second component is
It is preferably performed after the fabric is formed through the weaving process. When the second component is dissolved after forming the fabric, the multilayer structure of the fibers is not broken, and the function of ideally moving the moisture generated by the human body can be effectively imparted.

In addition, the composite fiber of the present invention can be used for dissolving the second component in the weaving process as compared with a yarn which is a conventionally known post-mixed yarn and has a structure of thick denier on the outside and fine denier on the inside. After that, when it is performed after the fabric is formed, the multilayer structure of the fibers is not broken, and therefore, it is more comfortable than the conventionally known post-mixed yarn.

[0020]

EXAMPLES Next, the present invention will be described more specifically with reference to Examples and Comparative Examples. In the examples, all "parts" indicate parts by weight. The maximum humidity in clothes used in this example was that the sample (7 cm × 10 cm) was conditioned at 20 ° C. and 65% RH and then on the simulated skin at 35 ° C. (the amount of water vapor generated from the simulated skin was 190 g / hr per 1.6 m ^2, which is the body area
Equivalent to. ) An interval of 6 mm was set and the humidity was continuously measured for 1 hour, and the maximum humidity was taken.

[0021] Example _{1 HO- (C 2 H 4 O} ) m -C 3 H 6 -O- (C 2 H 4 O) n -H; m + n = 6 - (1) sea component general formula (1) The modified polyethylene terephthalate obtained by copolymerizing the compound represented by 3% by weight with respect to ethylene glycol and 3 mol% of dimethyl 5-sodium sulfoisophthalate with respect to the terephthalic acid component is added with 10% by weight of polyethylene glycol having an average molecular weight of about 20,000. Using 100 parts of the melt-blended modified polyester and 20 parts of polyethylene terephthalate having an intrinsic viscosity of 0.63 in a mixed solvent of phenol / tetrachloroethane = 3/2 as an island component, spinning was performed using the nozzle shown in FIG. Temperature 280 ° C., spinning speed 1300 m / min. Spinning with
The obtained undrawn yarn was drawn at a hot roller temperature of 80 ° C. and a draw ratio of 3.00 times.

As shown in FIG. 2, the drawn yarn obtained at this time had a good yarn cross section in which the island component was composed of polyethylene terephthalate and the sea component was composed of modified polyethylene terephthalate. Further, the outermost peripheral fibrous material of the island component was 2.0 denier, and the fibrous material surrounded inside was 0.5 denier.

Using this drawn yarn, the warp density of a single yarn is 13
0 / in. Weft density 110 / in. Weaved into a loan. When this lawn was subjected to a weight reduction treatment in a 5.0 wt% NaOH aqueous solution at 90 ° C. for 30 minutes, the fibers forming the lawn were completely free from the eluted components. The maximum in-cloth humidity of the thus obtained woven fabric was measured and found to be 54.0%, which was excellent in comfort.

Example 2 The sea component was a copolymer of the compound represented by the general formula (1) in an amount of 3% by weight with respect to ethylene glycol, and dimethyl 5-sodium sulfoisophthalate was in an amount of 3 mol% with respect to a terephthalic acid component. Polyethylene terephthalate having an intrinsic viscosity of 0.63 in a mixed solvent of phenol / tetrachloroethane = 3/2 is used as an island component by using 100 parts of a modified polyester obtained by melt-blending polyethylene glycol having an average molecular weight of about 20,000 with 10 wt% of polyethylene glycol. Using 20 parts of a polymer having an average particle diameter of 0.2 μm and containing 1 wt% of kaolin, a spinning temperature of 280 ° C. and a spinning speed of 1300 m / min.
The unstretched yarn obtained by spinning with a hot roller temperature of 80
The drawing was performed at a temperature of ℃ and a draw ratio of 3.10 times.

As shown in FIG. 2, the drawn yarn thus obtained had a good yarn cross section in which polyethylene terephthalate as the island component and modified polyethylene terephthalate as the sea component.
In addition, the outermost peripheral fibrin of the island component is 1.9 denier,
The fibrin enclosed inside was 0.4 denier.

When this drawn yarn was woven by the method shown in Example 1 and alkali-reduced, the fibers forming the lawn were completely free from the eluted components. When the maximum clothes humidity of the fabric thus obtained was measured, it was 5
It was 4.6% and was excellent in comfort.

Comparative Example 1 In Example 2, the nozzle shown in FIG. 3 was used. The drawn yarn obtained at this time had a yarn cross section in which polyethylene terephthalate as the island component and modified polyethylene terephthalate as the sea component, as shown in FIG. In addition, the outermost peripheral fibrin of the island component of the obtained drawn yarn was 2.0 denier, and the fibrous material surrounded inside was 0.4 denier.

When this drawn yarn was woven and alkali-reduced by the method shown in Example 1, the fibers forming the lawn were found to be completely free of the eluted components. However, when the maximum clothes humidity of the thus obtained fabric was measured, it was 63.6%, which was no different from the conventional polyester fiber.

Comparative Example 2 In Example 2, 100 parts of modified polyethylene terephthalate as a sea component and 50 parts of polyethylene terephthalate as an island component were used. The outermost peripheral fibrous material of the island component of the obtained drawn yarn was 2.1 denier, and the fibrous material surrounded inside was 1.1 denier.

When this drawn yarn was woven by the method shown in Example 1 and alkali-reduced, the fibers forming the lawn were completely free from the eluted components. However, when the maximum clothes humidity of the thus obtained fabric was measured, it was 61.8%, which was no different from that of the conventional polyester fiber.

Comparative Example 3 In Example 2, 80 parts of modified polyethylene terephthalate as a sea component and 20 parts of polyethylene terephthalate as an island component were used. The outermost peripheral fibrous material of the island component of the obtained drawn yarn was 1.6 denier, and the fibrous material surrounded inside was 0.4 denier.

When this drawn yarn was woven by the method shown in Example 1 and alkali-reduced, the fibers forming the lawn were completely free from the eluted components. However, when the maximum clothes humidity of the thus obtained woven fabric was measured, it was 62.5%, which was no different from the conventional polyester fiber.

[0033]

The composite fiber of the present invention is a sea-island type composite fiber in which the island component is divided into 16 or more, and the outermost fiber group and the inner fiber group that surround the fibers arranged on the outermost side and arranged on the innermost side are included. The outer fiber group has a single yarn denier of 1.8 denier or more, the inner fiber group has a single yarn denier of 1 denier or less, and the outer fiber group has a single yarn denier / inner fiber group of single yarn denier value of 3 Since it is configured as described above, when it is used for clothing, it has a function of ideally moving the moisture generated by the human body, and a comfortable feeling and a good feeling of wearing can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic view showing a nozzle arrangement for producing a different denier composite yarn of the present invention.

FIG. 2 is a diagram showing a cross section of a composite yarn obtained in an example of the present invention.

FIG. 3 is a schematic view showing an arrangement of nozzles for manufacturing a composite yarn of a comparative example.

FIG. 4 is a view showing a cross section of a composite yarn obtained in a comparative example.

[Explanation of symbols]

 1 is an outer fiber, 2 is an inner fiber, and 3 is a sea component.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location D06M 11/38 // D01F 6/92 301 Q 7199-3B

Claims (2)

[Claims] 1. A so-called sea-island composite fiber in which an island component is surrounded by a sea component and separated in a subsequent step, and the island component is not dissolved at all in a solvent of the sea component, or the dissolution rate is higher than that of the sea component. Of a fiber-forming thermoplastic polymer satisfying a slow relationship, and in the arrangement of single yarns within the cross section of the composite fiber, the yarns of island components are divided into 16 or more, and are arranged at the outermost side and the inner side. It consists of a group of fibers that surrounds the fibers and a group of fibers that are arranged inside and separated from the group of outer fibers by the fineness. The outer group of fibers is composed of yarns with a denier of 1.8 denier or more. The group is composed of yarns having a single yarn denier of 1 denier or less, and is configured such that a value of outer yarn single yarn denier / inner yarn single yarn denier is 3 or more. Denier composite fiber. 2. All of the fibers constituting the outer fiber group are made of inert fine particles having an average particle size of 0.3 μm or less.
The hetero-denier composite fiber according to claim 1, which is a polyester fiber containing 5 to 3% by weight.