Pressure-sensitive adhesive sheet with release liner
US8377535B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2009 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Apr 24, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2848
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided is a release-lined pressure-sensitive adhesive sheet comprising a release liner 10 and a pressure-sensitive adhesive sheet 20. The release liner 10 has an average linear expansion coefficient of at most 7×10−5/° C. between 25° C. and 40° C. A layer 12 to constitute a surface 10A on the pressure-sensitive adhesive layer side of the release liner 10 is formed of a polyolefin-based resin composition containing none or at most 0.01 mass % of a phosphorous-based antioxidant. The surface 10A is divided into a plurality of sections 124 by a plurality of ridges 2A and 2B with each ridge having a height of 5 μm to 50 μm. At least one of the sections 124 inscribes a circle of a diameter greater than 500 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.