Tube of non woven material for reversed osmosis
US4214612A · kind A · utility
26Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1975 |
| Grant date | Jul 29, 1980 |
| Priority date | — |
| Expiry date | Dec 3, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composite tubular assembly comprising a membrane for membrane filtration fixed to the inner side of a tube of non woven material, consisting of a wound band of a sealable fibres containing non woven material, which may be helically or non helically wound, consecutive overlapping windings of the band being completely interconnected by ultrasonic heatsealing and thereby forming a smooth inner wall of the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.