Multi-layer packaging film and receptacles made therefrom
US4640856A · kind A · utility
81Cited by
12References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1985 |
| Grant date | Feb 3, 1987 |
| Priority date | — |
| Expiry date | Apr 29, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Improved shrink, toughness and barrier properties are achieved by a multi-layer, thermoplastic, shrink film having a substrate layer of very low density polyethylene and a gas barrier layer of vinylidene chloride copolymer or ethylene-vinyl-alcohol. The film is particularly useful for making bags for packaging large cuts of fresh red meat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.