Global Patent Index - EP 0695611 B1

EP 0695611 B1 2000-03-22 - Process and device for making profiled tubular pressed articles from a material in a plastic state such as clay or similar

Title (en)

Process and device for making profiled tubular pressed articles from a material in a plastic state such as clay or similar

Title (de)

Verfahren und Vorrichtung zum Herstellen von profilierten, rohrförmigen Presslingen aus plastischem Material wie Ton und dergleichen

Title (fr)

Procédé et dispositif pour la fabrication d'éléments pressés de forme tubulaire et profilés à partir d'un matériau à l'état plastique comme l'argile ou similaire

Publication

EP 0695611 B1 (DE)

Application

EP 95111648 A

Priority

DE 4427588 A

Abstract (en)

[origin: DE4427588C1] The production process uses a multiply perforated mouthpiece (20) which, over its length and/or periphery of a material extrusion press, is moved into a closed press mould (11,12) and the press mould is filled with material. The mouthpiece and the press mould are rotated relatively to one another and after withdrawal of the mouthpiece a rubber bladder is fed into the resultant space, being then set under pressure, the pressure being maintained for a predetermined time period. The rubber bladder is set under pressure with a gas, e.g. compressed air. A high pressure of at least 70 bars is maintained for a few minutes. The two-part press mould has a porous cladding and a material extrusion press is provided with a wave mixer and a delivery worm.

IPC 1-7 (main, further and additional classification)

B28B 13/02; B28B 5/08; B28B 21/20

IPC 8 full level (invention and additional information)

B28B 3/20 (2006.01); B28B 3/26 (2006.01); B28B 5/08 (2006.01); B28B 13/02 (2006.01); B28B 21/20 (2006.01); B28B 21/38 (2006.01)

CPC (invention and additional information)

B28B 3/20 (2013.01); B28B 3/26 (2013.01); B28B 5/08 (2013.01); B28B 13/0205 (2013.01); B28B 21/205 (2013.01); B28B 21/38 (2013.01)

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IE IT LI NL SE

EPO simple patent family

DE 4427588 C1 19950907; AT 190898 T 20000415; EP 0695611 A2 19960207; EP 0695611 A3 19971119; EP 0695611 B1 20000322; ES 2144547 T3 20000616

INPADOC legal status


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