Nonwoven fabric barrier layer
US4517714A · kind A · utility
109Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1982 |
| Grant date | May 21, 1985 |
| Priority date | — |
| Expiry date | Jul 23, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24826
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for making a nonwoven fabric barrier layer that comprises simultaneously ring-rolling to a desired basis weight at least two adjacent plies of hydrophobic microfine fiber webs. The adjacent plies prior to ring-rolling have a cumulative basis weight of from about 1.1 to about 4 times the desired basis weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.