Blocked film laminate of low density polyethylene
US4160053A · kind A · utility
10Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1977 |
| Grant date | Jul 3, 1979 |
| Priority date | — |
| Expiry date | Nov 17, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31917
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Laminates of two or more low density polyethylene films are prepared by blocking together superimposed films at a temperature below the fusion temperature, whereby the films can be pealed apart without distortion. The laminates are adapted for the manufacture of heavy duty bags and sacks having increased impact and tear resistance, as compared with single films or fused together laminates having the same gauge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.