Matted (delustered) artificial hair and method of preparation thereof
US4944751A · kind A · utility
Inventor
Key dates
| Filing date | Jan 4, 1989 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | Jan 4, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/10
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A matted (delustered) artificial hair which is disclosed herein comprises a fiber made of a synthetic resin. A large number of irregular scrubbed flaws is formed circumferentially on the surface of a monofilament having a substantially circular section. A method for preparation of such an artifical hair which method comprises placing a bundle of monofilaments of a synthetic fiber and each having a substantially circular section between two abrasive-coated plates each having a soft layer on a surface thereof, and allowing the two abrasive-coated plates to reciprocate in the opposite directions at an angle of 45.degree. to 90.degree. with respect to the longitudinal direction of the monofilament while applying a slight pressure in the presence of an abrasive, whereby a large number of scrubbed flaws is formed circumferentially on the surface of each monofilament.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.