Needled felt for papermaking use
US5194121A · kind A · utility
7Cited by
3References
3Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 24, 1991 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | May 24, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S162/90
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A needled felt for papermaking use of the present invention comprises fibers (having a specific fineness or diameter) formed of a polyamide block copolymer, particularly, polyamide block copolymer having hard segments composed of polyamide components such as nylon 12 and soft segments composed of polyether components, the felt of the present invention is excellent in elasticity, recovery and durability compared with other fibers exhibiting rubber-like elasticity such as polyurethane elastic fibers, in addition, the felt of the present invention facilitate needling which has been difficult with prior art rubbery elastic fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.