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.
Patent No.:
Date of Patent:
Oct. 12, 2021
Filed:
May. 26, 2020
Applicant:
Kyoraku Co., Ltd., Kyoto, JP;
Inventors:
Assignee:
KYORAKU CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 49/04 (2006.01); B29C 44/10 (2006.01); B29C 49/42 (2006.01); B29C 49/58 (2006.01); B29C 49/18 (2006.01); B29K 105/04 (2006.01); B29C 49/78 (2006.01); B29K 23/00 (2006.01); B29L 31/30 (2006.01);
U.S. Cl.
CPC ...
B29C 49/04 (2013.01); B29C 44/105 (2013.01); B29C 49/18 (2013.01); B29C 49/42 (2013.01); B29C 49/4252 (2013.01); B29C 49/58 (2013.01); B29C 49/78 (2013.01); B29C 2049/044 (2013.01); B29C 2949/78605 (2013.01); B29K 2023/00 (2013.01); B29K 2105/04 (2013.01); B29L 2031/30 (2013.01);
Abstract
A method of manufacturing a foam molded article is disclosed. The method includes the steps of forming a foam parison by extruding a molten, kneaded resin containing a foaming agent through an annular slit in an extrusion direction in which a molding region between a pair of split molds lies, and molding a foam molded article by closing the split molds with respect to the foam parison located in the molding region. The parison formation step includes performing pre-blowing by injecting air toward an inner surface of the foam parison in a direction which forms an angle of 45° or more and 135° or less with the extrusion direction.