Thin, resin-saturable aromatic polyamide paper and process for making same
US4992141A · kind A · utility
7Cited by
1References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 2, 1990 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Mar 2, 2010 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H13/26
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A nonwoven, flexible sheet and process for making same consisting essentially of a comingled mixture of about 55 to about 75% by weight short fibers of poly(meta-phenylene isophthalamide) and about 25 to about 45% by weight fibrids of poly(meta-phenylene isophthalamide). The sheet has a basis weight of between about 10 and about 25 g/m.sup.2 and a thickness of between about 25 and about 45 microns and is impregnatable with resins or silicone oils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.