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Patent Searching and Data


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)
Application Number:
PCT/JP2019/043759
Publication Date:
May 14, 2020
Filing Date:
November 07, 2019
Export Citation:
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Assignee:
UNICHARM CORP (JP)
International Classes:
D21C5/02; A61L11/00; B09B5/00; B29B17/00; A61L101/10
Foreign References:
JP2016000881A2016-01-07
JP2016198742A2016-12-01
JP2003523484A2003-08-05
US3932209A1976-01-13
US20150225901A12015-08-13
JP2016000881A2016-01-07
JP2010235681A2010-10-21
JP2010254726A2010-11-11
JPH10251301A1998-09-22
JP2018064514A2018-04-26
JP2008092910A2008-04-24
JP2011152079A2011-08-11
JP2013202021A2013-10-07
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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