Tape backing substrate
US4837070A · kind A · utility
35Cited by
13References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1988 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Sep 20, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2857
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is disclosed a cloth-like tape substrate. The substrate is made from an essentially unbonded cellulose web having a breaking length between about 0.71 km and 2.66 km which is saturated with a soft rubber-like polymer, coated with a low stiffness polymer, and then embossed. The unbonded web is formed from at least 25% by weight of pulp having R.sub.10 values greater than 94%. The soft rubber-like polymer has a glass-transition temperature between -50.degree. C. and 0.degree. C. and the low stiffness polymer coating has a tensile modulus less than 1,000 MPa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.