Method of thermoforming copolyesters
US8470962B2 · kind B2 · utility
2Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 27, 2011 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Sep 16, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2367/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of preventing bubble formation during or after thermoforming polyester sheet comprising heating the polyester sheet to about 100-165° F. for at least about 1 hour prior to thermoforming the sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.