Title:
METHOD FOR PRODUCING RECYCLED PULP FIBERS, RECYCLED PULP FIBERS, AND USE FOR OZONE
Document Type and Number:
WIPO Patent Application WO/2020/096013
Kind Code:
A1
Abstract:
An objective of the present disclosure is to provide a method for producing recycled pulp fibers that have a low hemicellulose content and are useful for various applications. The present disclosure comprises the following feature. A method for producing recycled pulp fibers from pulp fibers to be processed, the method being characterized by comprising a recycled pulp fiber formation step wherein an ozone-containing gas is fed into a processing tank containing a processing liquid that contains pulp-fiber-containing matter containing pulp fibers to be processed, thereby forming the abovementioned recycled pulp fibers, which have a hemicellulose content of less than 8.0 mass%, from the pulp fibers to be processed.
Inventors:
KONISHI TAKAYOSHI (JP)
BANDOU TAKESHI (JP)
YAMAKI KOUICHI (JP)
OHASHI NAOTO (JP)
BANDOU TAKESHI (JP)
YAMAKI KOUICHI (JP)
OHASHI NAOTO (JP)
Application Number:
PCT/JP2019/043759
Publication Date:
May 14, 2020
Filing Date:
November 07, 2019
Export Citation:
Assignee:
UNICHARM CORP (JP)
International Classes:
D21C5/02; A61L11/00; B09B5/00; B29B17/00; A61L101/10
Foreign References:
| JP2016000881A | 2016-01-07 | |||
| JP2016198742A | 2016-12-01 | |||
| JP2003523484A | 2003-08-05 | |||
| US3932209A | 1976-01-13 | |||
| US20150225901A1 | 2015-08-13 | |||
| JP2016000881A | 2016-01-07 | |||
| JP2010235681A | 2010-10-21 | |||
| JP2010254726A | 2010-11-11 | |||
| JPH10251301A | 1998-09-22 | |||
| JP2018064514A | 2018-04-26 | |||
| JP2008092910A | 2008-04-24 | |||
| JP2011152079A | 2011-08-11 | |||
| JP2013202021A | 2013-10-07 |
Other References:
See also references of EP 3862484A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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