Laminated polyphenylene sulfide film and process for producing the same
US5346762A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1993 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Jan 28, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31533
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A laminated polyphenylene sulfide film having excellent adhesiveness, especially heatsealability, and good mechanical properties and heat resistance, as well as a process for producing the same are disclosed. A central layer is constituted by a biaxially oriented polyphenylene sulfide film and a surface layer is constituted by phenylene sulfide copolymer containing a copolymerization unit other than p-phenylene sulfide unit in an amount of not less than 3 mol % and less than 50 mol %, so that the film has an improved adhesiveness and heatsealability while retaining the heat resistance and mechanical properties of biaxially oriented polyphenylene sulfide films.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.