Chemical and mechanical softening process for nonwoven web
US5413811A · kind A · utility
16Cited by
34References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1994 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Mar 18, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/903
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is provided a method of softening a nonwoven web by wetting a nonwoven web having a starting, unstretched width and a starting cup crush value, with an aqueous solution of softening chemicals, necking the saturated nonwoven web, drying the nonwoven web at a temperature and time sufficient to remove at least 95 percent of the moisture from the nonwoven web, wherein the web has a final cup crush value which is less than 50 percent of the starting cup crush value. The method may optionally include the step of un-necking the nonwoven web to about between 80 and 125 percent of its starting, unstretched width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.