Polyethylene composite film
US5006378A · kind A · utility
18Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1988 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Nov 8, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A polyethylene composite film suitable for packaging, which is superior in moistureproofness, flex-o-crack resistance, tearability and heat-sealing property, is provided comprising an oriented polyethylene film such that the degree of cross-linking inwardly decreases across the thickness of the film and at least one lamination layer, provided on one side of the oriented polyethylene film consisting of a lamination material having a heat shrinkage of less than 5% at 120.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.