Matt-effect, biaxially stretched polypropylene film and a process for its production
US5425990A · kind A · utility
16Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1993 |
| Grant date | Jun 20, 1995 |
| Priority date | — |
| Expiry date | Mar 19, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to matt-effect multilayer polypropylene films which acquire their matt appearance from at least one-sided, coextruded layer of a polymer mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.