Method for enhancing thermal expandability of direct-injection foams
USRE34123E · kind E · reissue
0Cited by
9References
11Claims
0Family size
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Key dates
| Filing date | Aug 21, 1991 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | Aug 21, 2011 |
Classification
- Technology area (CPC —)General
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.