Fabrication of discontinuous fibrils
US4025593A · kind A · utility
9Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1975 |
| Grant date | May 24, 1977 |
| Priority date | — |
| Expiry date | Jun 9, 1995 |
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 introducing a make-up fluid into the two-phase liquid mixture before the pressure release is complete.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.