Extremely fine polyphenylene sulphide fibres
US5075161A · kind A · utility
24Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1989 |
| Grant date | Dec 24, 1991 |
| Priority date | — |
| Expiry date | Mar 22, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/626
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Fibres, fibre webs or fibre aggregates made of polyphenylene sulphide (PPS) or of mixtures of PPS with other polymers are produced by a melt-spinning process where the melt filaments are drawn out and cooled down to below the melt temperature by a gaseous medium flowing essentially parallel thereto at sonic or supersonic speed, this simultaneous deformation and cooling giving rise to amorphous fine or extremely fine fibres (17) of finite length which are deposited to form a fibre web or fibre aggregate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.