Search

CN-122028825-A - Fiber for artificial hair and hair decorative product

CN122028825ACN 122028825 ACN122028825 ACN 122028825ACN-122028825-A

Abstract

The present invention aims to provide a fiber for artificial hair with reduced glossiness. One aspect of the present invention is an artificial hair fiber having a plurality of hollow portions extending in a longitudinal direction. Preferably, the 1 st hollow portion of the plurality of hollow portions is located at a substantially center of a fiber cross section perpendicular to the longitudinal direction of the artificial hair fiber, and one or more 2 nd hollow portions of the plurality of hollow portions are located at positions closer to an outer edge direction of the artificial hair fiber than the 1 st hollow portion in the fiber cross section.

Inventors

  • INOUE YUHKI
  • Village Gang Qiao Zi

Assignees

  • 电化株式会社

Dates

Publication Date
20260512
Application Date
20241025
Priority Date
20231031

Claims (12)

  1. 1. A fiber for artificial hair, wherein, The artificial hair fiber has a plurality of hollow portions extending in the longitudinal direction.
  2. 2. The artificial hair fiber according to claim 1, wherein, The 1 st hollow portion of the plurality of hollow portions is located at a substantially center of a fiber cross section perpendicular to the longitudinal direction of the artificial hair fiber, One or more 2 nd hollow portions among the plurality of hollow portions are located in the fiber cross section at positions closer to the outer edge direction of the artificial hair fiber than the 1 st hollow portion.
  3. 3. The artificial hair fiber according to claim 1, wherein, The largest hollow part of the plurality of hollow parts occupies 5% -50% of the area of the fiber section perpendicular to the length direction, The other hollow parts or hollow parts account for 0.1% -4% of the area of the fiber section on average.
  4. 4. The artificial hair fiber according to claim 3, wherein, The largest hollow portion is located at substantially the center of a fiber cross section perpendicular to the length direction of the artificial hair fiber, The one or more hollow portions are located in the fiber cross section in a position closer to the outer edge direction of the artificial hair fiber than the largest hollow portion.
  5. 5. The artificial hair fiber according to claim 1, wherein, The largest hollow portion among the plurality of hollow portions has an area S M in a fiber cross section perpendicular to the longitudinal direction, When the sum of the areas of the hollow portion or hollow portions in the fiber cross section other than the above is S O , S M /S O is 5-40.
  6. 6. The artificial hair fiber according to claim 1, wherein, The length of the outer edge of the largest hollow part of the plurality of hollow parts in the fiber cross section perpendicular to the length direction is set to be L M , When the sum of the outer edge lengths in the fiber cross section of the one or more hollow portions other than the above is L O , L M /L O is 1.3 to 3.8.
  7. 7. The fiber for artificial hair according to any one of claims 1 to 6, wherein, Among the plurality of hollow portions, the shortest distance between the outer edges of the hollow portions adjacent to each other is 3 μm to 30 μm.
  8. 8. The fiber for artificial hair according to any one of claims 2 to 6, wherein, The fiber cross section includes at least one of an inner protruding portion protruding from one or more other hollow portions toward one hollow portion among the plurality of hollow portions, and an outer protruding portion protruding from one or more hollow portions among the plurality of hollow portions toward an outer edge of the artificial hair fiber.
  9. 9. The fiber for artificial hair according to any one of claims 1 to 6, wherein the number of the plurality of hollow portions is 3 or more.
  10. 10. The fiber for artificial hair according to any one of claims 1 to 6, which comprises a vinyl chloride-based resin.
  11. 11. A hair decorative product provided with the fiber for artificial hair according to any one of claims 1 to 6.
  12. 12. The hair grooming product of claim 11 comprising a hair strand.

Description

Fiber for artificial hair and hair decorative product Technical Field The present invention relates to a fiber for artificial hair and a hair decorative product. Background Artificial hair as a substitute for human hair is increasingly important in hair-decorating products such as wigs, local wigs, hair bands, doll hair, and the like. Materials constituting the artificial hair fiber include acrylic resins, vinyl chloride resins, and polyester resins, and artificial hair fibers made of these resins are commercially available. Patent document 1 discloses a fiber for artificial hair, which is characterized by containing a hollow fiber having a hollow portion with a hollow ratio of 10 to 50%. Patent document 2 discloses a fiber for artificial hair, which is characterized in that a void is provided in the center of a fiber cross section, the ratio of the area of the void to the entire area of the fiber cross section is 5% to 50%, the cross section of the fiber cross section is flat multi-lobed, and the void has 1 st and 2 nd sides inclined by 70 degrees to 110 degrees with respect to the long axis of the fiber cross section. Prior art documents Patent literature Japanese patent application laid-open No. 2008-285772 [ Patent document 2 ] WO2014/196642 Disclosure of Invention In recent years, there is a demand for weight reduction of fibers for artificial hair, and for example, patent document 1 and patent document 2 disclose fibers for artificial hair having hollow portions. However, the conventional artificial hair fiber has the following problems. It is difficult to present a natural appearance close to human hair because of the artificial sense of gloss due to high glossiness. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a fiber for artificial hair having reduced glossiness. As a result of intensive studies, the present inventors have found that the above problems can be solved by providing a specific hollow structure in an artificial hair fiber, and have completed the present invention. According to the present invention, the following is provided. [1] A fiber for artificial hair is provided with a plurality of hollow parts extending in the longitudinal direction. [2] The artificial hair fiber according to [1], wherein the 1 st hollow portion is located at a substantially center of a fiber cross section perpendicular to the longitudinal direction of the artificial hair fiber among the plurality of hollow portions, and one or more 2 nd hollow portions are located in an outer edge direction of the artificial hair fiber among the fiber cross section than the 1 st hollow portion, respectively. [3] The artificial hair fiber according to [1], wherein among the plurality of hollow portions, a largest hollow portion occupies 5 to 50% of an area of a fiber cross section perpendicular to the longitudinal direction, and one or more other hollow portions occupies 0.1 to 4% of an area of the fiber cross section on average. [4] The artificial hair fiber according to [3], wherein the largest hollow portion is located at a substantially center of a fiber cross section perpendicular to the longitudinal direction of the artificial hair fiber, and the one or more hollow portions other than the largest hollow portion are located in the fiber cross section in a position closer to an outer edge direction of the artificial hair fiber than the largest hollow portion. [5] The artificial hair fiber according to any one of [1] to [4], wherein, when the area of the largest hollow portion in the fiber cross section perpendicular to the longitudinal direction among the plurality of hollow portions is S M, and the sum of the areas of one or more hollow portions in the fiber cross section is S O, S M/SO is 5 to 40. [6] The artificial hair fiber according to any one of [1] to [5], wherein, when the length of the outer edge of the largest hollow portion among the plurality of hollow portions in the fiber cross section perpendicular to the longitudinal direction is L M, and the sum of the lengths of the outer edges of the one or more hollow portions in the fiber cross section is L O, L M/LO is 1.3 to 3.8. [7] The artificial hair fiber according to any one of [1] to [6], wherein the shortest distance between the outer edges of the hollow portions adjacent to each other among the plurality of hollow portions is 3 μm to 30 μm. [8] The artificial hair fiber according to any one of [2] to [7], wherein at least one of an inner protruding portion protruding from one or more hollow portions other than the one hollow portion and an outer protruding portion protruding from one or more hollow portions toward an outer edge of the artificial hair fiber is provided in the fiber cross section. [9] The artificial hair fiber according to any one of [1] to [8], wherein the number of the plurality of hollow portions is 3 or more. [10] The artificial hair fiber according to any one of [1]