Draw plate for the production of membranes of an organic materia

Details Draw plate for the production of membranes of an organic materia Draw plate for the production of membranes of an organic materia

1989-12-22

1991-09-10

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

26417714, 2642091, 425192R, 425464, 425467, 425DIG217, B29C 4726

Patent

active

050469363

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.

REFERENCES:
patent: 2965925 (1960-12-01), Dietzsch, Sr.
patent: 3075242 (1963-01-01), Grafried
patent: 3081490 (1963-03-01), Heyner et al.
patent: 3121254 (1964-02-01), Heyner et al.
patent: 3397427 (1968-08-01), Briske, Jr. et al.
patent: 4229154 (1980-10-01), Chaban, Jr. et al.

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