Draw plate for the production of membranes of an organic material
US5046936A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1989 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | Dec 22, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/217
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to an extrusion plate for the production of membranes of an organic material including at least one longitudinal passageway. This extrusion plate includes an annular body (1) provided with a cylindrical cavity into which opens at least one radial fluid conduit (5), an upper ferule (3) adapted to be inserted into the cavity of the body and comprising at least one hollow needle (8) extending in the extension of said insert and a longitudinal centering fluid feed conduit (9), and a lower insert (4) adapted to be inserted into the cavity of the body and having a bore (6) defining an extrusion chamber around the needles (8). The upper (3) and lower (4) inserts are in abutment at assembly faces at the level of which open the fluid conduits (5), and a fluid passage (7) is provided on these opposing faces in continuity with the passages (5), for communicating with the extrusion chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.