Title:
How to recover pulp fibers from used absorbent articles
Document Type and Number:
Japanese Patent JP6324576
Kind Code:
B2
Abstract:
A method is provided which, by a simple process, separates and recovers pulp fibers from a used absorbent article that contains pulp fibers and a superabsorbent polymer. A used absorbent article is treated with an aqueous solution that contains greater than or equal to 0.05 mass% of at least one kind of terpene selected from the group comprising terpene hydrocarbons, terpene aldehydes, and terpene ketones and that contains a deactivating agent that can deactivate the superabsorbent polymer; the superabsorbent polymer is deactivated, the adhesive that bonds together the constituent materials of the absorbent article is dissolved with the terpene to decompose the absorbent article, the pulp fibers are discharged to outside of the absorbent article, and the pulp fibers are separated from the absorbent article and recovered.
Inventors:
Takayoshi Konishi
Toshio Hiraoka
Koichi Yamaki
Kameda Noriho
Toshio Hiraoka
Koichi Yamaki
Kameda Noriho
Application Number:
JP2017076088A
Publication Date:
May 16, 2018
Filing Date:
April 06, 2017
Export Citation:
Assignee:
UNI-CHARM CO.,LTD.
International Classes:
D21C5/02; A61F13/84; B09B3/00; B09B5/00; B29B17/02; C08J11/26; D21H11/14
Domestic Patent References:
| JP2016123973A | ||||
| JP2014217835A | ||||
| JP4317785A |
Foreign References:
| WO2015190140A1 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Atsushi Ebiya
Hiroyuki Onoda
Okuno Takenori
Kenji Fujimoto
Takashi Ishida
Tetsuji Koga
Atsushi Ebiya
Hiroyuki Onoda
Okuno Takenori
Kenji Fujimoto