Multilayer polyester sheet
US5972445A · kind A · utility
48Cited by
9References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1998 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Jul 20, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2817
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to a multilayer polyester sheet comprising: PA1 a base layer comprising a thermoplastic polyester resin (A) having a glass transition temperature of not less than 80.degree. C., and PA1 a sealing layer comprising a thermoplastic polyester resin (B) having a glass transition temperature at least 5.degree. C. lower than that of the base layer and laminated on at least one side of the base layer, PA1 said multilayer polyester sheet being a substantially non-stretched transparent sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.