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Title:
METHOD FOR RECOVERING PULP FIBERS FROM USED ABSORBENT ARTICLES
Document Type and Number:
WIPO Patent Application WO/2017/179252
Kind Code:
A1
Abstract:
Provided is a method for efficiently recovering pulp fibers with a high degree of safety and without detriment to the performance of the pulp fibers, from used absorbent articles such as disposable diapers containing pulp fibers and a super absorbent polymer. This method comprises: a step for extracting a mixture of pulp fibers, super absorbent polymer and water from used absorbent articles; a step of using a pair of electrodes to apply a voltage to the mixture of pulp fibers, super absorbent polymer and water to deactivate the super absorbent polymer; and a step for separating pulp fibers from the mixture of pulp fibers, deactivated super polymer and water.

Inventors:
KONISHI, Takayoshi (1531-7 Wadahama, Toyohama-cho, Kanonji-sh, Kagawa 02, 〒7691602, JP)
HIRAOKA, Toshio (1531-7 Wadahama, Toyohama-cho, Kanonji-sh, Kagawa 02, 〒7691602, JP)
YAMAKI, Koichi (1531-7 Wadahama, Toyohama-cho, Kanonji-sh, Kagawa 02, 〒7691602, JP)
KAMEDA, Noritomo (1531-7 Wadahama, Toyohama-cho, Kanonji-sh, Kagawa 02, 〒7691602, JP)
Application Number:
JP2017/000862
Publication Date:
October 19, 2017
Filing Date:
January 12, 2017
Export Citation:
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Assignee:
UNICHARM CORPORATION (182 Shimobun, Kinsei-cho Shikokuchuo-sh, Ehime 11, 〒7990111, JP)
International Classes:
B09B5/00; A61L2/03; A61L2/04; A61L2/10; A61L2/18; A61L2/20; B09B3/00; C02F1/58; C02F3/34; H01M8/16
Foreign References:
JP2015182246A2015-10-22
JP2015134845A2015-07-27
JP2013197047A2013-09-30
JP2010084031A2010-04-15
Attorney, Agent or Firm:
AOKI, Atsushi et al. (SEIWA PATENT & LAW, Toranomon 37 Mori Bldg. 5-1, Toranomon 3-chome, Minato-k, Tokyo 23, 〒1058423, JP)
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