Fiber bundle for artificial hair, process for producing fiber bundle for artificial hair, and head decoration product
US8511320B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2007 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Sep 8, 2029 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02G1/18
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An object of the invention is to provide an artificial hair fiber bundle having a color tone with a gradation appearance at a tip portion thereof. An aspect of the invention is a fiber bundle (10) for artificial hair, with one end (1) thereof being bundled and fixed. The fiber bundle includes fibers (A1, B1) of two or more kinds having color tones different from each other, the fiber bundle being obtained by a heat treatment at a predetermined temperature. The fibers of two or more kinds have heat shrinkage rates different from each other, and a tip portion of the fiber (A1) out of the fibers of two or more kinds emerges in a portion (2) corresponding to the other end of the fiber bundle (10) which is not bundled and fixed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.