Method of forming improved matted surface-finished article by use of transfer member, and article formed thereby
US5639536A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1994 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Sep 20, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2839
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An in-mold molded product includes a molded plastic member having projections and recesses on a surface thereof and a transfer layer provided on such surface. The outer surface of the transfer layer has a contour corresponding to the projections and recesses of the plastic member and additionally has projections and recesses that are finer than those on the surface of the plastic molded member. Thus, the finished product has a matte surface with good wear characteristics. The product is molded by arranging a mat transfer member at a predetermined region of a cavity of a mold unit, the mat transfer member having the fine projections and recesses on one surface thereof, and a portion of the mold unit defining the cavity having, at the predetermined region, projections and recesses which are larger in size than those of the mat transfer member. Plastic is injected into the cavity in a direction to urge the mat transfer member against the portion of the mold unit having the larger projections and recesses thus molding the molded product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.