Polypropylene barrier film and method of forming same
US4650721A · kind A · utility
55Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1986 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Jun 9, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The film resulting from and the process for forming a firmly bonded film laminate combination comprising, preparing an intimate combination I of polypropylene and a maleic acid anhydride modified olefin polymer; forming a film of at least one layer of said combination I with at least one layer of a polymer II selected from the group consisting of polyvinyl alcohol and an ethylene-vinyl alcohol copolymer; and effecting adhesion between the layers by orienting the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.