使用済み衛生用品からパルプ繊維を回収する方法およびその方法により得られる再生パルプ

Title:

使用済み衛生用品からパルプ繊維を回収する方法およびその方法により得られる再生パルプ

Document Type and Number:

Japanese Patent JP6646924

Kind Code:

B2

Abstract:

A method of treating polymer absorbent of a used sanitary product including pulp fiber and the polymer absorbent, comprising the steps of making the polymer absorbent imbibe water in an amount equal to a weight of the polymer absorbent or more, making the polymer absorbent in a moisture-containing state come in contact with an ozone-containing gas, and decomposing, lowering molecularization, and solubilizing at least a portion of the polymer absorbent by the ozone-containing gas.

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Inventors:

Takayoshi Konishi
Toshio Hiraoka
Kameda Noriho
Hideaki Ichiura
Hiroko Nakaoka

Application Number:

JP2014193074A

Publication Date:

February 14, 2020

Filing Date:

September 22, 2014

Export Citation:

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Assignee:

UNI-CHARM CO.,LTD.

International Classes:

B09B3/00; A61L2/18; A61L11/00; B29B17/02; B29B17/04; D21B1/32; D21C5/02

Domestic Patent References:

JP4317785A
JP6009721A
JP2009073198A
JP2000084533A
JP2012067406A
JP6184970A
JP8013381A

Attorney, Agent or Firm:

Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Atsushi Ebiya
Satoshi Deno
Hiroyuki Onoda
Daisuke Yoshisako
Okuno Takenori

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