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Papermaking technology

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Title:
Papermaking technology
Author: MU YONGSHENG ; MA MINGYU ; CHEN JIAN ; GONG BIN ; MA XINGHU ; WANG SHUANG ; YU WANGSHENG
Subjects: IMPREGNATING OR COATING OF PAPER ; PAPER NOT OTHERWISE PROVIDED FOR ; PAPER-MAKING ; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D ; PRODUCTION OF CELLULOSE ; PULP COMPOSITIONS ; TEXTILES ; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
Description: A papermaking technology comprises the following steps: providing a slurry; adding a wet strengthening agent into the slurry and mixing uniformly, wherein the wet strengthening agent is polyamide epichlorohydrin; and adding an amphoteric polyethylene imine solution with the pH value between 4 and 6 into the slurry, and mixing uniformly, wherein polyethylene imine in the polyethylene imine solution accounts for 1%-3% by mass of the absolutely dry slurry. By using the amphoteric polyethylene imine solution with the pH value adjusted to be in the scope of 4-6 and the wet strengthening agent (polyamide epichlorohydrin) for combined usage, acidified polyethylene imine is capable of enabling fine fiber in the system to be easily flocculated and reducing obstruction of the fiber to screen sieve apertures, and therefore the technology is capable of substantially improving the negative influence of conventional polyamide epichlorohydrin on paper dewatering performance.
Creation Date: 2015
Language: English
Source: esp@cenet

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