Fiber for artificial hair, and hair accessory formed from same

Abstract

The present invention relates to a polyvinyl chloride-based resin fiber having a shrinkage stress of 70 μN / dtex or less at 130° C. When fiber bundles for artificial hair which includes 20 to 100% by weight of this polyvinyl chloride-based resin fiber and 0 to 80% by weight of a thermoplastic resin fiber having a Young's modulus of 4 to 9 GPa and a shrinkage percentage of 10% or less at 130° C. and having a composition including no polyvinyl chloride-based resin are processed, a fiber for artificial hair and an artificial hair product having an excellent styling property and texture similar to those of human hair can be obtained.

Description

TECHNICAL FIELD[0001]The present invention relates to a fiber for artificial hair and a fiber bundle for artificial hair having an excellent styling property and a soft and smooth texture similar to those of human hair; a hair accessory and an artificial hair product formed therefrom; and a polyvinyl chloride-based resin fiber forming the fiber for artificial hair and the fiber bundle for artificial hair.BACKGROUND ART[0002]As a synthetic fiber for artificial hair which is commercially available, there are many materials such as polyvinyl chloride-based resin fibers, polyester-based resin fibers, and modacrylic resin fibers. These synthetic fibers each have superior properties derived from the material, and they have been used in a headdress product in a field in which they excel depending on the properties of each fiber. Recently, combined fibers are used to fabricate one headdress product, harmonizing and utilizing various excellent properties. The resulting commodities, which con...

AI Technical Summary

Benefits of technology

The present invention allows for the creation of a fiber for artificial hair and an artificial hair product that has good styling and a smooth texture like human hair.

Problems solved by technology

On the other hand, however, when fibers formed from different materials are combined to be used, it is difficult to fully utilize the properties of each fiber, and thus so far the commercial value, which is comparable with that of human hair products, cannot be obtained in headdress products made of synthetic fibers.

The biggest problem when the fibers formed from different materials are combined to be used is that an optimum processing temperature varies depending on the material.

On the other hand, however, when it is heated at a temperature extremely higher than an optimum temperature of a material, fusion occurs between fibers to lose softness, and the fiber is bent due to heat-shrinkage, resulting in bad texture with rough feel.

When it is heated at an extremely lower temperature, the shape cannot be kept sufficiently, thus resulting in reduced styling property.

In particular, the polyvinyl chloride-based resin has a low heat-resistance, and the quality is remarkably reduced with increase of a temperature, and thus a temperature at which a curl shape is imparted is limited to 80 to 90° C. For this reason, when it is particularly mixed with a high heat-resistant fiber such as a polyester-based resin fiber, curls are imparted at a processing temperature lower than an optimum temperature of the polyester-based resin fiber, and thus strong curls, which are originally imparted from the polyester-based resin fiber, cannot be utilized.

In addition, original improvement effects of texture by the fiber-treating agent cannot be sufficiently exhibited.

The polyvinyl chloride-based resin fiber, however, has very outstanding properties as a fiber for hair in soft and smooth texture similar to that of human hair, styling property of a curl shape, and a cost performance, and thus it is difficult to ignore the fiber in this field, and the conventional technique cannot reach a fully satisfactory level in an overall quality.

However, because the properties of the polyvinyl chloride-based resin fiber are not sufficiently utilized, there are rooms to improve the texture, and the resulting products do not reach a level in which the quality as a commodity comparative with human hair products is imparted.

For the purpose of solving the problems described above, some attempts about the polyvinyl chloride-based resin fiber have further been performed, but sufficient effects have not yet been obtained.

For example, Patent Document 3 describes a method for calculating conditions to impart curls, but an effect of suppressing occurrence of fiber bending is insufficient only by simply decreasing a shrinkage percentage and the texture is not considered, for example, the fiber becomes hard in high-temperature conditions, and thus sufficient qualities cannot be obtained as a commodity for hair.

In addition, Patent Document 4 describes examples in which a chlorinated polyvinyl chloride resin having a high chlorine content is admixed in order to improve a heat-resistance of a polyvinyl chloride-based resin fiber, but sufficient texture as a commodity for hair cannot be obtained only by decreasing a shrinkage percentage.

In addition, in all of Patent Documents, studies to sufficiently obtain effects of a fiber-treating agent are not performed, and a smooth and moisturizing texture, which is required for hair products, does not reach a sufficient level.

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