HONEYCOMB EXTRUSION MOLDING MOUTH RING

Title:

HONEYCOMB EXTRUSION MOLDING MOUTH RING

Document Type and Number:

WIPO Patent Application WO/2003/039826

Kind Code:

A1

Abstract:

A honeycomb extrusion molding mouth ring having a construction such that on the front surface it has groove−like slits (2) defined by cell blocks (3) and on the back surface it has a body introducing hole communicating with the slits (2), the cell block (3) forming soft films (16) on hard films (14) formed on the outermost surfaces of body introducing holes and the slits (2) defined by a cell block main body (10). This honeycomb extrusion molding mouth ring eliminates the possibility of dimensional inaccuracy of the mouth ring, maintains a stabilized extrusion friction force, and is superior in extrusion moldability and wear resistance. Furthermore, the adjustment of the mouth ring at the time of extrusion molding is facilitated.

Inventors:

YAMADA KENJI (JP)
MATSUKUBO TAKASHI (JP)
MATSUMOTO KEIJI (JP)

Application Number:

PCT/JP2002/010400

Publication Date:

May 15, 2003

Filing Date:

October 07, 2002

Export Citation:

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Assignee:

NGK INSULATORS LTD (JP)
YAMADA KENJI (JP)
MATSUKUBO TAKASHI (JP)
MATSUMOTO KEIJI (JP)

International Classes:

B29C48/30; B28B3/20; B28B3/26; B28B7/34; B29C48/11; B29C48/32; (IPC1-7): B28B3/26

Foreign References:

US6193497B1	2001-02-27
EP0276083A2	1988-07-27
EP0389253A2	1990-09-26
JP2001172766A	2001-06-26

Other References: