Heat-sealable plastic film
US5393592A · kind A · utility
6Cited by
4References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 19, 1993 |
| Grant date | Feb 28, 1995 |
| Priority date | — |
| Expiry date | Jan 19, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31931
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A heat-sealable plastic film produced by coextrusion or lamination, comprising 2 layers A and C and, if desired, a layer B and, if desired, a layer of an adhesion promoter for bonding each two of the layers A, B (if present) and C (the sum of the thicknesses or of the weights of A, B (if present) and C in each case being 100) comprises from 1 to 50 % of a layer of a heat-sealable, impact resistant polystyrene A, up to 95% of a base layer B and from 1 to 99% by weight of a high-melting plastic layer C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.