ENVIRONMENT-FRIENDLY METHOD FOR ENHANCING MECHANICAL PROPERTIES OF HIGH-BACTERIAL-RESISTANCE NANO-DIALYSIS PAPER FOR MEDICAL PROTECTION

WIPO Patent Application WO/2023/207377

A1

Disclosed in the present invention is an environment-friendly method for enhancing the mechanical properties of high-bacterial-resistance nano-dialysis paper for medical protection. The method comprises the following steps: a. preparing pulp components, involving taking 40-60 parts by mass of hardwood pulp, 10-20 parts by mass of polyvinyl alcohol fibers, 30-50 parts by mass of softwood pulp, and 10-20 parts by mass of cellulose fibers; b. pulping the hardwood pulp, the polyvinyl alcohol fibers, the softwood pulp and the cellulose fibers in a pulping machine to obtain pulp, adding modified chitosan accounting for 1-5% by weight of the pulp into the pulp, and dispersing the resulting mixture for 10-20 min in a fluffer at a rotating speed of 1500-2000 rpm; and c. carrying out papermaking on the defibered pulp to form a finished dialysis paper product. The dialysis paper prepared in the present invention has better mechanical properties, is degradable, and has high bacterial resistance and high air permeability.

ZHAO HUIFANG (CN)
GUO DALIANG (CN)
FANG CHIAN (CN)
HAN SHOUYI (CN)
HUANG YIKE (CN)
HUANG LIANGYU (CN)
HU GAORONG (CN)
ZHOU YUECHEN (CN)
TU ZHIYUAN (CN)

PCT/CN2023/081245

November 02, 2023

March 14, 2023

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UNIV ZHEJIANG SIENCE & TECHNOLOGY (CN)

D21D1/02; D21F11/00; D21H13/02; D21H13/16

CN114622436A	2022-06-14
CN112176770A	2021-01-05
CN112501942A	2021-03-16
CN111705544A	2020-09-25
CN108660859A	2018-10-16
KR101149061B1	2012-05-24

BEIJING SHENGXUN IP AGENT LLC (CN)

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