FOAM FORMING DIE, AND METHOD OF MANUFACTURING FOAM FORMED PRODUCT USING THE DIE

Title:

FOAM FORMING DIE, AND METHOD OF MANUFACTURING FOAM FORMED PRODUCT USING THE DIE

Document Type and Number:

WIPO Patent Application WO/2003/106138

Kind Code:

A1

Abstract:

A foam forming die, comprising a filler port (2), a hollow part (3), and an exhaust flow passage (5), wherein two rotating bodies (6a, 6b) having an outer peripheral section formed generally in complete round shape are disposed at the end of the flow passage (5) and the end part of the flow passage (5) is narrowed by the rotating bodies (6a, 6b) to form a molten resin discharge part (9), and the rotating bodies (6a, 6b) are rotated in a molten metal discharge direction to control the flow of molten resin, whereby, since a shear heating can be reduced while maintaining a pressure inside the die at a high pressure, the temperature of the molten resin can be adjusted easily and the flow of the molten resin can be uniformized and, accordingly, since a large amount of foam agent with low solubility can also be used, the various types of hard−to−foam resin materials can be foamed easily.

Inventors:

FUKUMURA MIKIO (JP)

Application Number:

PCT/JP2002/005993

Publication Date:

December 24, 2003

Filing Date:

June 17, 2002

Export Citation:

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Assignee:

FUKUMURA MIKIO (JP)

International Classes:

B29C44/22; B29C44/48; B29C48/08; B29C48/30; B29C48/305; B29C48/35; B29C48/355; B29C48/90; B29C35/04; B29C35/16; B29C69/02; (IPC1-7): B29C47/14; B29C47/08; B29C47/04

Foreign References:

JP2002210807A	2002-07-31
JP2001287259A	2001-10-16
JPH054269A	1993-01-14
JPH1016035A	1998-01-20

Other References: