Process for continuous preparation of fibrous polymer crystals
US4137394A · kind A · utility
75Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 1977 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | May 17, 1997 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D5/40
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Filament-like polymer crystal fibers are prepared from a solution of a crystallizable polymer, such as polyethylene or polypropylene, in a vessel containing a spinning rotor, preferably having a slightly roughened surface, according to the disclosed invention. The fiber thus formed is taken up and removed at a rate equal to the crystal growth rate. The longitudinal crystal growth rate is of sufficient speed for commercial application while at the same time yielding fibers of outstanding mechanical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.