Method and system for recovering pulp fibers from used absorbent articles

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United States of America Patent

PATENT NO 11673172
APP PUB NO 20200346261A1
SERIAL NO

16760107

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Abstract

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Provided is a method that, when pulp fibers are recovered from used absorbent articles that have been put into collection bags, makes it possible to safely and sanitarily crush the used absorbent articles while suppressing costs. A method for recovering pulp fibers from used absorbent articles, the method comprising: a crushing step (S12) in which collection bags (A) in which used absorbent articles have been sealed are put into a container (65), the collection bags in the container are transferred to a crushing device (12) that communicates with the container, and, bag by bag, the crushing device crushes the used absorbent articles in the collections bags in a deactivating aqueous solution; and a separation step (S13) in which the pulp fibers, a highly water-absorbent polymer, and the deactivating aqueous solution are separated from the crushed product and deactivating aqueous solution obtained in the crushing step.

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Patent Owner(s)

Patent OwnerAddress
UNICHARM CORPORATION182 SHIMOBUN KINSEI-CHO SHIKOKUCHUO-SHI EHIME 7990111 ?7990111

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hiraoka, Toshio Kanonji, JP 33 138
Kato, Takashi Kanonji, JP 514 6728
Konishi, Takayoshi Kanonji, JP 96 1307
Kurita, Noritomo Kanonji, JP 11 19

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