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:
Apr. 07, 2026
Filed:
Aug. 16, 2022
Jsp Corporation, Tokyo, JP;
Akinobu Hira, Kanuma, JP;
Tokunobu Nohara, Tokyo, JP;
JSP CORPORATION, Tokyo, JP;
Abstract
A method for producing polypropylene-based resin expanded beads containing a post-consumer recycled material of a polypropylene-based resin foamed molded article containing carbon black in order to enable provision of a black expanded beads molded article excellent in appearance and physical properties using a post-consumer recycled material of a polypropylene-based resin foamed molded article containing carbon black. The method includes: a mixing step of melt-mixing a polypropylene-based resin at 230° C. under a load of 2.16 kg and a polypropylene-based resin recovered materials including of a recovered materials of a post-consumer recycled material of a polypropylene-based resin foamed molded article with an extruder to obtain a mixture; an extrusion step; and a foaming step, wherein in the mixture, the polypropylene-based resin recovered materials contains carbon black.