Thermoplastic multi-layer foil structure
US4234663A · kind A · utility
19Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1979 |
| Grant date | Nov 18, 1980 |
| Priority date | — |
| Expiry date | Jan 29, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A thermoplastic multi-layer foil structure comprises a styrenic polymer layer and an olefinic polymer layer bonded by an intermediary polymer layer comprising at least one layer constituted by a bonding agent. In this multi-layer structure, at least one layer containing scrap produced from said multi-layer foil structure is included in the latter, said scrap-containing layer including a mixture of said scrap with a convenient proportion of a graft copolymer of a styrenic monomer on a polyolefinic substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.