Porous plastic film product, useful as a breathable wall covering or filters
US5262444A · kind A · utility
50Cited by
4References
57Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1992 |
| Grant date | Nov 16, 1993 |
| Priority date | — |
| Expiry date | Nov 30, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06N2213/04
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention relates to a breathable, plastic film, useful as a wall covering material. A low boiling additive, such as water, is added to a plastisol before extrusion. During extrusion and curing of the plastisol into a film or coating, the low boiling additive is volatilized and the resulting evolved gas perforates the forming film. In this manner a permeable plastic film, such as vinyl, is produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.