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Patent Searching and Data


Title:
CORE RESIN
Document Type and Number:
WIPO Patent Application WO/2020/217695
Kind Code:
A1
Abstract:
Provided is a core resin used for injection molding, the core resin: making it less likely for the inner surface of an external molded body to become rough; making the inner surface of the molded body obtained as a final product smooth; and making it less likely for inner-surface defects to be generated. The core resin is made of a polyvinyl alcohol resin, and is used for an injection molding process in which a core is dissolved in water after an external molded body is formed. The core resin contains, in the amount of more than 0.1 wt% but less than 1.2 wt%, a releasing agent that enhances release properties at the time of dissolving.

Inventors:
CHITOU TAKAHISA (JP)
Application Number:
PCT/JP2020/007735
Publication Date:
October 29, 2020
Filing Date:
February 26, 2020
Export Citation:
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Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
B22F3/02; B28B1/24; B29C33/40; B29C45/26
Foreign References:
JP2014218642A2014-11-20
JP2016166285A2016-09-15
JP2005206188A2005-08-04
JP2012251092A2012-12-20
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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