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. 28, 2021
Filed:
Dec. 20, 2017
Unicharm Corporation, Ehime, JP;
Takayoshi Konishi, Kanonji, JP;
Toshio Hiraoka, Kanonji, JP;
Takashi Kato, Kanonji, JP;
Noritomo Kurita, Kanonji, JP;
UNICHARM CORPORATION, Ehime, JP;
Abstract
The present invention provides a method which, in the process of manufacturing recycled pulp fibers from a mixture of pulp fibers and a high water-absorption polymer, enables efficient manufacturing of the recycled pulp fibers while properly removing the high water-absorption polymer from the pulp fibers. This method comprises: a supply step (S-) for supplying an aqueous solution containing a mixture () to a driving fluid supply port (DI) of an ejector () and simultaneously supplying, to a suction fluid supply port (AI) of the ejector, a gaseous substance (Z) which is capable of degrading a high water-absorption polymer so as to make the degraded polymer dissolvable; and a treatment step (S-) for discharging, from a mixed fluid discharge port (CO) of the ejector that is connected to a lower part of a treatment tank (), a mixed liquid, which is formed when the aqueous solution and the gaseous substance are mixed within the ejector, into a treatment liquid (P) within the treatment tank, so as to lessen the high water-absorption polymer in the mixture.