Coextruded core laminates
US4837088A · kind A · utility
72Cited by
29References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 9, 1987 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Jun 9, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2839
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Multilayer laminates are made by extruding two polymeric films of different composition and forming them in contact with each other to provide a peelable interface, and forming a divisible core structure by permanently combining one of said films with a layer of pressure sensitive adhesive and combining the other film with at least one additional layer. The invention is useful for providing "dry" or non-tacky peelable labels and for providing renewable surfaces on articles such as trays or other substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.