Hand-tearable moisture barrier laminate
US5881521A · kind A · utility
30Cited by
12References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1997 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Sep 8, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/693
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A hand-tearable barrier laminate includes a reinforcing layer having a first tensile strength. The reinforcing layer is laminated to a flexible cellulosic web. The web has open porosity and a second tensile strength which is less than the first tensile strength. The web is treated with a water-resistant polymeric resin for providing liquid water resistance to the web while permitting water vapor to pass through the web. This hand-tearable barrier laminate can be substituted for polymer foam and microperforated plastic films currently employed by the housing industry, reducing costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.