Method for enhancing thermal expandability of direct-injection foams
US4925606A · kind A · utility
24Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1989 |
| Grant date | May 15, 1990 |
| Priority date | — |
| Expiry date | Oct 10, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/15
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The process of enabling foam moldings to expand further than otherwise by impregnating the expanded sheet with inorganic gases such as carbon dioxide, nitrogen, air and other pneumatogens prior to reheating to effect expansion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.