Shrink film
US4857399A · kind A · utility
24Cited by
5References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1988 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Mar 25, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A four layer shrink film comprising an ethylene-propylene random copolymer as a meat contact first layer, a blend of anhydride-modified ethylene copolymer adhesive and EVA as an inner core second layer, a blend of EVOH and amide polymer as a barrier third layer, and a blend of anhydride- modified ethylene copolymer adhesive and EVA as an abuse fourth layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.