Heat shrinkable laminate film
US5318829A · kind A · utility
14Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1993 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Feb 8, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A heat shrinkable laminate film is disclosed which includes a core layer formed of an ethylene-vinyl alcohol copolymer, two intermediate layers provided on opposite surfaces of the core layer and each formed of a copolymer selected from (a) copolymers of an unsaturated carboxylic acid or a derivative thereof and propylene and (b) copolymers of an unsaturated carboxylic acid or a derivative thereof and an alpha-olefin-propylene copolymer containing not greater than 10% by weight of alpha-olefin comonomer, and two outer layers provided on respective surfaces of the intermediate layers and each formed of an ethylene polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.