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Patent Searching and Data


Title:
SPRUE BUSH AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/003881
Kind Code:
A1
Abstract:
In order to provide a manufacturing method for a sprue bush capable of suitably cooling the entirety of a molten resin raw material in a raw material resin flow path, one embodiment of the present invention provides a manufacturing method for a sprue bush, the method comprising providing a molding part on a base part which includes a raw material resin flow path and a cooling medium flow path, and thereby manufacturing the sprue bush, wherein: the molding part is provided with a downstream raw-material-resin flow path part corresponding to a downstream side region of the raw material resin flow path in the sprue bush; the molding part is further provided with a downstream cooling-medium flow path part being positioned around the downstream raw-material-resin flow path part and corresponding to a downstream side region of the cooling medium flow path in the sprue bush; and the downstream cooling-medium flow path part is provided so as to surround the downstream raw-material-resin flow path part.

Inventors:
WATANABE SHINYA
ABE SATOSHI
TANAKA KENICHI
MORI MIKIO
UCHINONO YOSHIYUKI
Application Number:
PCT/JP2017/023811
Publication Date:
January 04, 2018
Filing Date:
June 28, 2017
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
B29C33/38; B29C45/27
Domestic Patent References:
WO2008038694A12008-04-03
Foreign References:
JPH06158113A1994-06-07
JP2016002698A2016-01-12
JP2003220634A2003-08-05
Other References:
See also references of EP 3479983A4
Attorney, Agent or Firm:
SAMEJIMA, Mutsumi et al. (JP)
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