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:
Sep. 09, 2025
Filed:
Aug. 27, 2024
Sam Bu Fine Chemical Co., Ltd., Gimhae-si, KR;
Heedae Park, Busan, KR;
Heedae Park, Busan, KR;
SAM BU FINE CHEMICAL CO., LTD., Gimhae-si, KR;
[object Object];
Abstract
The present invention relates to a method of manufacturing a foam sheet for shoes containing recycled PU scrap powder, the method of manufacturing the foam sheet, including eco-friend Polyurethane (PU) foam composition prepared by water foam, is provided by first mixing recycled PU scrap powder with polyol and then reacting with the secondary addition of recycled PU scrap powder by controlling the process conditions and processing speed through a side-feeder, it is possible to prevent the viscosity of the raw material from rising, so that even if a larger amount (less than 60 wt %) of recycled material is used than before, the quality of the product is equivalent to that of conventional shoe insoles or shoe uppers.