Thermoformable composite film
US6329047A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1999 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Jul 19, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to a thermoformable composite film comprising at least one film which comprises cycloolefin copolymer and comprising, laminated to at least one side of this film, a thermoplastic film. The thermoformable film is obtainable by using a solvent-free single-component adhesive to apply the thermoplastic film laminated to the film which comprises cycloolefin copolymer. The film which is laminated is a PVDC-containing thermoplastic film. The thickness of the entire film is from 100 to 500 .mu.m, the thickness of PVDC film is from 5 to 150 .mu.m and the thickness of the COC film is from 50 to 400 .mu.m. The thermoformable composite film is used to produce blister packs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.