Title:
METHOD FOR PRODUCING PULP FIBER RAW MATERIAL AND PULP FIBER RAW MATERIAL AS CELLULOSE RAW MATERIAL
Document Type and Number:
Japanese Patent JP2020109224
Kind Code:
A
Abstract:
To provide a method for producing a pulp fiber raw material suitable as a cellulose raw material.SOLUTION: A method for producing pulp fiber raw material as a cellulose raw material from pulp fiber to be treated includes an ozone treatment step S36 of supplying ozone-containing gas to a treatment tank that contains a treatment liquid containing a pulp fiber matter containing a pulp fiber to be treated, so that an ozone-treated pulp fiber is formed from the pulp fiber to be treated, and an alkaline treatment step S39 of treating the ozone-treated pulp fiber with an alkaline aqueous solution, so that a pulp fiber material containing a hemicellulose of less than 8.0 mass% is formed.SELECTED DRAWING: Figure 1
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Inventors:
KONISHI TAKAYOSHI
BANDO KENJI
KURITA NORITOMO
BANDO KENJI
KURITA NORITOMO
Application Number:
JP2019230800A
Publication Date:
July 16, 2020
Filing Date:
December 20, 2019
Export Citation:
Assignee:
UNI CHARM CORP
International Classes:
D21C5/02; D21C3/00; D21C9/153
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mitsuhashi
Hiroyuki Onoda
Okuno Takenori
Kenji Fujimoto
Shinji Mitsuhashi
Hiroyuki Onoda
Okuno Takenori
Kenji Fujimoto