The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 16, 2021

Filed:

Jun. 06, 2014
Applicant:

Mitsubishi Heavy Industries Plastic Technology Co., Ltd., Nagoya, JP;

Inventors:

Toshihiko Kariya, Nagoya, JP;

Yasuo Okochi, Nagoya, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 45/16 (2006.01); B29C 45/70 (2006.01); B29C 45/64 (2006.01); B29C 45/76 (2006.01); B29C 45/26 (2006.01);
U.S. Cl.
CPC ...
B29C 45/16 (2013.01); B29C 45/1635 (2013.01); B29C 45/64 (2013.01); B29C 45/70 (2013.01); B29C 45/7653 (2013.01); B29C 2045/2683 (2013.01); B29C 2945/76498 (2013.01); B29C 2945/76709 (2013.01); B29C 2945/76869 (2013.01);
Abstract

This injection molding method uses an injection molding machine for two-material molding, which comprises a first mold part that is provided with a cavity and a second mold part that is provided with a cavity and is arranged in tandem with the first mold part. This injection molding method comprises: a first molding step wherein a material is injected into the cavity of the first mold part and the material in the cavity is compressed; and a second molding step wherein a material is injected into the cavity of the second mold part. A pressure, which is generated in the second mold part by injecting the material into the cavity in the second molding step, acts on the first mold part, and a compressive force is applied to the material in the cavity in the first molding step.


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