Multilayer sheet material, process for its manufacture and its use
US4917925A · kind A · utility
27Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1989 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Jul 26, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multilayer sheet material comprising an 11-aminoundecanoic acid polyamide film (1) bonded by at least one of its faces to a polypropylene film (2) is obtained by coextrusion of the corresponding polyamide and polypropylene. It can be used for the manufacture of impermeable flexible bags for sterile solutions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.