Release films formed by coextrusion
US5700571A · kind A · utility
19Cited by
25References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1993 |
| Grant date | Dec 23, 1997 |
| Priority date | — |
| Expiry date | Dec 22, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2848
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A release liner providing a release surface which comprises a first olefin polymer film formed having dispersed therein by high shear mixing a release substance which is polyethyleneimine octadecyl carbamide, polyvinyl octadecyl carbamate or a mixture thereof, coextruded or cocast onto a film formed from a second olefin polymer. The release liner has particular utility in diaper tape application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.