Heatsealable polypropylene film laminate
US4148972A · kind A · utility
23Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1977 |
| Grant date | Apr 10, 1979 |
| Priority date | — |
| Expiry date | Jun 22, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A polypropylene film laminate is made by laminating at least one side of a polypropylene layer comprising 1 -8 wt. % ionomer with an ionomer layer. This film is produced by coextruding polymers from a die, and is useful for automatic packaging applications at high speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.