Breathable and liquid impermeable web and method of making the web
US8541642B2 · kind B2 · utility
5Cited by
44References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2012 |
| Grant date | Sep 24, 2013 |
| Priority date | — |
| Expiry date | Apr 13, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/674
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method is disclosed for modifying the physical characteristics of a web which involves passing the web between at least one pair of interengaged rolls to incrementally stretch the web, and then withdrawing the incrementally stretched web from between the rolls under tension. A web modified according to the disclosed method has desirable breathability and liquid impermeability, as well as extensibility and a soft, cloth-like textured surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.