Coextruded laminate having barrier layers
US4780258A · kind A · utility
29Cited by
16References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 17, 1987 |
| Grant date | Oct 25, 1988 |
| Priority date | — |
| Expiry date | Jul 17, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1341
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a novel process for the coextrusion of a laminate containing more than a single barrier layer. Also provided is a coextruded composite useful for forming containers. Additionally, there is provided a unique coextrusion apparatus useful for forming the laminate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.