Coextruded two-ply laminate films of low density polyethylene and blend of polybutene-1 and polyethylene or polypropylene
US4456660A · kind A · utility
10Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1980 |
| Grant date | Jun 26, 1984 |
| Priority date | — |
| Expiry date | Aug 6, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31931
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
There are provided coextruded two-ply laminate films in which one of the lamina is low density polyethylene and the other is a blend of 10-50 weight percent polybutene with 90-50 weight percent polypropylene or low density polyethylene. Such laminated films are tough and have good tear resistant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.