Drum coagulator for preparing microporous membranes
US4598662A · kind A · utility
4Cited by
10References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1983 |
| Grant date | Jul 8, 1986 |
| Priority date | — |
| Expiry date | Feb 11, 2003 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06B9/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process and device for producing a flexible layered article suitable for use in water proof garments wherein one of said layers is a microporous membrane material produced from the "solvent non-solvent" method wherein a fabric backing coated with the membrane material dissolved in a solvent is contacted with a drum having gripping means offering substantial resistance to the natural tendency of the coated fabric to curl when immersed in a non-solvent for the polymer material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.