Method of manufacturing thermoplastic polyester foam sheet
US5723510A · kind A · utility
29Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1996 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Jun 11, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2367/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing a thermoplastic polyester foam sheet comprises forming a roll by overlapping a thermoplastic polyester sheet and a separator on each other and rolling them, impregnating an inert gas into the thermoplastic polyester sheet while the roll is kept in a pressurized inert gas atmosphere, and foaming the thermoplastic polyester sheet by heating it under atmospheric pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.