Artificial hair for implantation and process for producing the artificial hair
US6474344B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Feb 5, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Feb 5, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2430/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A monofilament fabricated by a process in which a melt spinning and drawing treatment are carried out after particles of silver ceramics are mixed with a resin material for a fiber having a principal component of polybutylene terephthalate. The particles of the silver ceramics have a size of 5.0 &mgr;m or less, and the content of the particles of the silver ceramics in the mixture is within a range of 0.3% to 3.0%. The monofilament thus obtained is suitably cut and a root part is formed at one end of the monofilament. Then, the surface of the monofilament is subjected to a mechanical delustering treatment, thus obtaining artificial hair having low bacterial infection rate, high fixation rate of implanted hairs, and high durability, such that the hair does not break at a point near the root part even after having been used for a long period of time after implantation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.