Title:
METHOD FOR IMPROVING FIBER SOFTNESS OF HIGH-YIELD PULP
Document Type and Number:
WIPO Patent Application WO/2021/012616
Kind Code:
A1
Abstract:
A method for improving the fiber softness of high-yield pulp, comprising the following steps: treating the high-yield pulp using ozone, and treating the high-yield pulp using cellulase. Surface lignin is removed using ozone, enabling the fiber softness to be increased. Meanwhile, the fiber structure is loosened, and a "channel" may be opened for the entry of cellulase. Cellulase enables water molecules to enter the inside of the fibers, and the distance between fiber macromolecular chains increases, causing the fibers to deform and the self-rigidity to reduce, thereby the increasing the softness. On the basis of ozone pretreatment of the high-yield pulp, cellulase treatment is carried out, thus increasing the accessibility of cellulase to the fibers, and secondly, ozone serves as an environmentally-friendly reagent and may improve the softness of the fibers on the premise of not polluting the environment or polluting the environment less.
Inventors:
CAO HAIBING (CN)
AN XINGYE (CN)
LU BIN (CN)
LIU HONGBIN (CN)
ZHANG RUNQING (CN)
XU DONG (CN)
DONG HONGMING (CN)
AN XINGYE (CN)
LU BIN (CN)
LIU HONGBIN (CN)
ZHANG RUNQING (CN)
XU DONG (CN)
DONG HONGMING (CN)
Application Number:
PCT/CN2019/129642
Publication Date:
January 28, 2021
Filing Date:
December 28, 2019
Export Citation:
Assignee:
ZHEJIANG JINGXING PAPER JOINT STOCK CO LTD (CN)
International Classes:
D21C3/04; D21C5/00
Foreign References:
| CN110438835A | 2019-11-12 | |||
| CN110042687A | 2019-07-23 | |||
| CN107574703A | 2018-01-12 | |||
| CN108914668A | 2018-11-30 | |||
| CN108071038A | 2018-05-25 | |||
| CN101067284A | 2007-11-07 | |||
| JP2003253580A | 2003-09-10 |
Attorney, Agent or Firm:
HANGZHOU HUADING INTELLECTUAL PROPERTY LAW FIRM (CN)
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