Heat seal coating and coated film
US6607823B2 · kind B2 · utility
9Cited by
6References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2001 |
| Grant date | Aug 19, 2003 |
| Priority date | — |
| Expiry date | Sep 5, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention provides a coated polymer film having heat seal properties. The heat seal coating includes a propylene diol copolyester. Preferably, the copolyester is formed from 1,3-propane diol, isophthalic acid and a sulfomonomer. A method of heat sealing using this coated film is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.