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:
Mar. 09, 2021
Filed:
Jul. 05, 2018
Applicant:
Kyoraku Co., Ltd., Kyoto, JP;
Inventor:
Takeru Sano, Yamato, JP;
Assignee:
Kyoraku Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 9/04 (2006.01); C08J 9/06 (2006.01); C08J 9/08 (2006.01); C08J 9/10 (2006.01); C08J 9/12 (2006.01); B29C 44/08 (2006.01); B29C 44/56 (2006.01); B29C 49/42 (2006.01); B29L 31/30 (2006.01); B29L 23/00 (2006.01); B29C 49/00 (2006.01); B29K 105/04 (2006.01); B29C 49/04 (2006.01);
U.S. Cl.
CPC ...
C08J 9/122 (2013.01); B29C 44/08 (2013.01); B29C 44/56 (2013.01); B29C 49/4268 (2013.01); B29C 49/0005 (2013.01); B29C 49/04 (2013.01); B29C 2049/001 (2013.01); B29K 2023/06 (2013.01); B29K 2105/04 (2013.01); B29L 2023/22 (2013.01); B29L 2031/30 (2013.01); B29L 2031/3032 (2013.01); C08J 2323/06 (2013.01);
Abstract
A blow-molded foam is provided by foaming and blow-molding the resin material including a polyethylene resin. The foamed resin includes the antioxidant by 300 ppm or more in total. The antioxidant is preferably the combination of a phosphorus antioxidant and a phenolic antioxidant. The optimum amount of phosphorus antioxidant to be included is 250 ppm to 3000 ppm, and that of phenolic antioxidant is 250 ppm to 750 ppm. In the manufacture, the collected resin material and the resin including 300 ppm or more of the antioxidant are melted and kneaded and the foaming agent is mixed thereto to provide the foamed resin, and the foamed resin is blow-molded.