Process for the manufacture of discontinuous fibrils
US4189455A · kind A · utility
30Cited by
31References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1972 |
| Grant date | Feb 19, 1980 |
| Priority date | — |
| Expiry date | Aug 1, 1992 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D5/11
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A continuous fibrillated structure, formed by the abrupt pressure release of a two-phase liquid mixture of polymer and solvent at elevated temperature and pressure so as to cause the instantaneous vaporization of the solvent, is shredded by a stream of fluid directed transversely against the continuous fibrillated structure at the moment of its formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.