INJECTION MOLDING DIE FOR MESH FILTER AND INJECTION MOLDING METHOD FOR MESH FILTER

Title:

INJECTION MOLDING DIE FOR MESH FILTER AND INJECTION MOLDING METHOD FOR MESH FILTER

Document Type and Number:

WIPO Patent Application WO/2016/136603

Kind Code:

A1

Abstract:

[Problem] To limit variations in molten resin filling rate inside a cavity and limit the occurrence of burrs at the openings of the filter part. [Solution] Gates 18 are provided at four points along the circumferential direction of an inner cylinder cavity section 14 of an injection molding die 10 on one end face 14a of the inner cylinder cavity section 14. If, in an X-Y plane that is orthogonal to the central axis 17 of the inner cylinder cavity section 14, a central line passing through the center of the inner cylinder cavity section 14 and parallel to the X-axis is a first central line 20 and a central line passing through the center of the inner cylinder cavity section 14 and parallel to the Y-axis is a second central line 21, the gates 18 are disposed in areas that are between the first central line 20 and the second central line 21, and are configured to open at positions of the filter part cavity section 16 where filling rate tends to be slow and not to open at positions of the filter part cavity section 16 where filling rate tends to be fast.

Inventors:

TAKI KENJIRO (JP)
MAKINO YASUYUKI (JP)

Application Number:

PCT/JP2016/054800

Publication Date:

September 01, 2016

Filing Date:

February 19, 2016

Export Citation:

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Assignee:

ENPLAS CORP (JP)

International Classes:

B29C45/27; B01D39/00; B01D39/16; B29D28/00; F02M37/34

Domestic Patent References:

WO2015025639A1

2015-02-26

Foreign References:

JPH091690A	1997-01-07
JPH07323438A	1995-12-12
JP2011072910A	2011-04-14
JPH10278075A	1998-10-20
JP2001047495A	2001-02-20

Other References: