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Patent Searching and Data


Title:
METHOD FOR PRODUCING PAPER PULP AND METHOD FOR PRODUCING RECYCLED ARAMID PAPER
Document Type and Number:
WIPO Patent Application WO/2021/166462
Kind Code:
A1
Abstract:
Provided is a method for producing paper pulp, the method enabling the reuse of raw material for papermaking without finely grinding end bits and broken bits of aramid paper. A method for producing paper pulp, the method comprising disintegrating aramid paper made of aramid short fibers and aramid fibrids in water, wherein: the method includes a disintegration step for putting dry aramid paper in water and causing the aramid paper to disintegrate; and in the disintegration step, the aramid paper is caused to disintegrate using a disintegrator 1 having stirring force in a vertical direction.

Inventors:
FUJIMORI TATSUSHI (JP)
NARUSE SHINJI (JP)
Application Number:
PCT/JP2020/049093
Publication Date:
August 26, 2021
Filing Date:
December 28, 2020
Export Citation:
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Assignee:
DUPONT TEIJIN ADVANCED PAPERS JAPAN LTD (JP)
International Classes:
D21H13/26; D21B1/32
Domestic Patent References:
WO2012118187A12012-09-07
Foreign References:
JP2003213592A2003-07-30
JPH07243189A1995-09-19
JPH04228696A1992-08-18
Attorney, Agent or Firm:
TANAKA Shinichiro et al. (JP)
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