Multilayer composite material, especially for closures for plastic containers
US4451526A · kind A · utility
4Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1982 |
| Grant date | May 29, 1984 |
| Priority date | — |
| Expiry date | Aug 20, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31692
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multilayer composite material, suitable for capping plastic milk bottles and other containers, comprising; PA1 (a) a metal foil, PA1 (b) a polyolefin film, and PA1 (c) an adhesive layer bonding the metal foil and the polyolefin film together and formed of two compounds A and B; wherein said metal foil has a thickness between 25 and 75 microns; said polyolefin film has a thickness between 10 and 30 microns; and said adhesive layer has a thickness between 0.5 and 6 microns, and preferably between 2 and 5 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.