Paper making felt with PBO fiber batt layers
US5863390A · kind A · utility
4Cited by
1References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1997 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Aug 4, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/696
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A paper making felt for use in hot press or press drying paper making processes comprising a base cloth layer and batt fiber layers, with at least the paper-contacting surface layer of the batt fiber layers composed principally of poly(paraphenylene benzoxazole) fiber. The felt exhibits a high degree of resistance to flattening, and consequently its effectiveness in removing water from the paper and its useful life for that purpose are enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.