Multi-layer composite for reusable multi-layer packs
US5418068A · kind A · utility
16Cited by
4References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1992 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | Oct 26, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31739
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multi-layer composite made of at least one copolyamide protective layer, and at least one copolyamide barrier layer, with the protective layer placed such that it is between the barrier layer and a source of moisture. The protective copolyamide layer is composed of a partially aromatic, amorphous copolyamide of a specified composition, and the barrier layer is composed of a partially aromatic barrier copolyamide of a specified composition. This multi-layer composite is especially useful in reusable packaging systems, such as beverage bottles or containers of any kind.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.