Title:
METHOD FOR PRODUCING RECYCLED PULP FIBERS FROM USED ABSORBENT ARTICLES
Document Type and Number:
WIPO Patent Application WO/2023/112750
Kind Code:
A1
Abstract:
The present invention provides a method for producing recycled pulp fibers from used absorbent articles, the method enabling the achievement of recycled pulp fibers which exhibit high dispersibility, and from which foreign substances are easily detected and removed. The present invention provides a method for producing recycled pulp fibers from used absorbent articles containing pulp fibers, the method comprising a dehydration step (S03) and a loosening step (S04). In the dehydration step, pulp fibers which have been separated from the used absorbent articles and cleaned are subjected to dehydration. In the loosening step, each one of a plurality of lumps of the pulp fibers formed by the dehydration is loosened so as to produce recycled pulp fibers.
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Inventors:
ISHIKAWA YOSHIHIDE (JP)
HIRAOKA TOSHIO (JP)
HIRAOKA TOSHIO (JP)
Application Number:
PCT/JP2022/044760
Publication Date:
June 22, 2023
Filing Date:
December 05, 2022
Export Citation:
Assignee:
UNICHARM CORP (JP)
International Classes:
A61L11/00; A61F5/44; B09B5/00; B29B17/02; D21C5/02; A61L101/10
Domestic Patent References:
| WO2014007105A1 | 2014-01-09 |
Foreign References:
| JP2020049398A | 2020-04-02 | |||
| JP2013132600A | 2013-07-08 | |||
| JP2003135521A | 2003-05-13 |
Other References:
ANONYMOUS: "Regarding the recycling of used disposable diapers promoted by Unicharm,", UNICHARM CORPORATION, 16 December 2020 (2020-12-16), pages 1 - 20, XP093071388, Retrieved from the Internet [retrieved on 20230807]
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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