Membrane on a hollow cord
US3984328A · kind A · utility
13Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1973 |
| Grant date | Oct 5, 1976 |
| Priority date | — |
| Expiry date | Jul 30, 1993 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D69/1071
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A flexible semi-permeable tubular assembly is provided which consists essentially of a cord comprising a textile sheath which carries a semi-permeable membrane, said sheath being composed of yarns, the external surface of the sheath being compressed and flattened, the internal surface of the sheath defining an axial channel which communicates with the exterior. This assembly is particularly suitable for the concentration, separation and purification of fluids by reverse osmosis, ultra-filtration and gas permeation. The assembly combines good tensile strength with good porosity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.