Method of molding plastic products having chemically bonded protective coatings
US5000903A · kind A · utility
39Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1989 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | Apr 6, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/14286
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Coated plastic products are prepared by chemically bonding a protective coating material to at least a portion of the surface of a plastic substrate, by disposing a web of a protective coating material over the cavity of a mold, and thereafter injecting polymeric precursor materials into the mold behind the web thereby conforming the web to the surface of the mold cavity. As the polymeric precursor materials react in situ to form the plastic substrate, they also chemically bond to the protective coating material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.