Method of molding a product having low gloss surface
US5728328A · kind A · utility
5Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1996 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Mar 27, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/0024
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for manufacturing a resin product with a mold having at least two molds opposed to each other. Each of the molds 5 has a cavity surface defining a space therebetween. The method includes the steps of performing an ionic nitriding treatment to at least a part of at least one cavity surface to form fine projections and recesses therein. A nitride layer is provided on the one cavity surface. The method further includes filling the space with a plastic resin material, solidifying the resin material, and removing the solidified resin material from the mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.