Title (en)

EXTRUSION

Publication

EP 0045564 A3 19820421 (EN)

Application

EP 81302995 A 19810701

Priority

GB 8024695 A 19800729

Abstract (en)

[origin: EP0045564A2] Extrusion, especially of an aqueous ceramic compositions, is carried out under the influence of mechanical vibrations, preferably at ultrasonic frequencies in the range 15000 - 25000 Hz. This has advantages such as increasing the rate of extrusion at a given level of motive power or decreasing the extent to which compositions need to be preconsolidated before extrusion. Application of vibrations to the extrusion die facilitates cleaning after use. Extrudates can be cut cleanly by applying the vibrations to a cutting tool.

IPC 1-7

B28B 3/20; B28B 17/00; B28B 11/16

IPC 8 full level

B28B 3/20 (2006.01); B28B 7/38 (2006.01); B28B 11/16 (2006.01); B29B 7/00 (2006.01); B29C 47/00 (2006.01); B29C 47/18 (2006.01); B29C 47/38 (2006.01); B29C 47/54 (2006.01); B29C 48/315 (2019.01); B29C 48/395 (2019.01)

CPC (source: EP)

B28B 3/205 (2013.01); B28B 7/386 (2013.01); B28B 11/16 (2013.01)

Citation (search report)

• [X] US 3456295 A 19690722 - TORIGAI YASUO, et al
• DE 965687 C 19570613 - EISENWERKE MUELHEIM MEIDERICH
• DE 955210 C 19570221 - WESSEL WERK A G
• [X] FR 1441796 A 19660610 - AEROPROJECTS INC
• GB 745366 A 19560222 - SOEST FERRUM APP BAU G M B H
• DE 855672 C 19521113 - STICHTING LAB VAN VLAMOVEN N V
• FR 2225275 A1 19741108 - VAW VER ALUMINIUM WERKE AG [DE]
• FR 1582670 A 19691003
• FR 1096901 A 19550628 - CONST HENRI DUCASSOU & CIE
• US 3073201 A 19630115 - CARL THUMIM

Designated contracting state (EPC)

BE DE FR GB IT NL SE

DOCDB simple family (publication)

EP 0045564 A2 19820210; EP 0045564 A3 19820421; DK 330881 A 19820130; JP S5751441 A 19820326

DOCDB simple family (application)

EP 81302995 A 19810701; DK 330881 A 19810724; JP 11759681 A 19810727