Coextruded multi-layer polyethylene film and bag construction
US4303710A · kind A · utility
85Cited by
14References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1980 |
| Grant date | Dec 1, 1981 |
| Priority date | — |
| Expiry date | Mar 3, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31917
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Laminar thermoplastic film constructions comprising a layer of low density polyethylene bonded to a layer of a dissimilar polymer blend comprising high density polyethylene and polyethylene copolymers. In particular such copolymers comprise polyethylene copolymerized with another alpha olefin containing from about 3 up to about 15 carbon atoms. Such copolymers are also characterized by being linear, low density polymers having densities which are below about 0.94 grams/cc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.