Heat sealable polyvinyl chloride films
US7175903B1 · kind B1 · utility
1Cited by
34References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2003 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Apr 1, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24942
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A heat sealable film for use in food packaging comprises a resin composition comprising vinyl chloride homopolymer, vinyl chloride-vinyl acetate copolymer and plasticizer in an amount greater than about 15% by weight of the resin composition. In one embodiment, the film is adapted to provide a controlled oxygen transmission of at least 500 cc/in2/24 hours. The embodiment is also adapted to heat seal on conventional packaging equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.