Method and appartus for forming composite products
US4734230A · kind A · utility
40Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1986 |
| Grant date | Mar 29, 1988 |
| Priority date | — |
| Expiry date | Jul 24, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/83
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A composite plastic product is formed by a process which includes formation of a preform of high strength plastic having openings formed therethrough which are covered by a film barrier that is formed during molding of the preform; and wherein the preform is configured to be placed as a unit in a foam station at which material is foamed onto the insert without escape to its backside.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.