Pressure-sensitive adhesive label
US5871829A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1997 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | Jan 15, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/25
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a novel pressure-sensitive adhesive label which curls little even under the coldest conditions and which has as a surface material a microporous stretched resin film obtained by stretching a crystalline polyolefin resin film containing an inorganic fine powder, a pressure-sensitive adhesive layer provided on one side of the surface material and a release paper provided on the pressure-sensitive adhesive layer, where the microporous stretched resin film satisfies the following physical properties (1) and (2): PA1 (1) the linear thermal expansion coefficient in a machine direction at -10.degree. C. (JIS K-7197) is from 10 to 70 .mu.m/m.multidot..degree.C.; and PA1 (2) the linear thermal expansion coefficient in the machine direction at 0.degree. C. is from 10 to 75 .mu.m/m.multidot..degree.C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.