Matt polyolefin film having release properties
US10737474B2 · kind B2 · utility
1Cited by
5References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 26, 2011 |
| Grant date | Aug 11, 2020 |
| Priority date | — |
| Expiry date | Jan 26, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24364
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to transparent multilayer biaxially oriented polyolefin films comprising a base layer and at least one outer matt covering layer, which contains at least two incompatible polymers and has a surface roughness of at least 2.0 [mu]m. The covering layer contains a polydialkyl siloxane having a viscosity of 100,000 to 500,000 mm2/s. The surface of said covering layer is pre-treated by means of corona.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.