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Method for increasing filling amount of paper product

A paper product and mixed fiber technology, applied in the field of papermaking, can solve the problem of limited filling amount and so on

Pending Publication Date: 2021-09-28
CHINA NAT PULP & PAPER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of these filling methods can only increase the filling volume to a limited extent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0040] 1) Use water as the diluent, dilute the nitrile latex to a mass concentration of 8%, and set aside; the retention aid is cationic polyacrylamide, add water to dilute to a mass concentration of 1%, and set aside; the wet strength agent is polyamide epoxy Chloropropane resin, diluted with water to a mass concentration of 0.8%, for subsequent use; the defoamer is a JF-05B type silicone defoamer, diluted with water to a mass concentration of 0.8%, for subsequent use;

[0041] 2) The coniferous wood chemical pulp is diluted with water, and then fluffed, and glass wool fibers are added, and then fluffed to obtain a mixed fiber fluffing liquid. The dry mass ratio of softwood chemical pulp fiber: glass wool fiber in the mixed fiber is 2:1. The mass concentration of the mixed fiber dissolving liquid is 1%;

[0042] 3) Adding fillers to the mixed fiber dispelling liquid, and stirring to obtain the first mixture; the fillers are 1250 mesh magnesium oxide.

[0043] 4) add nitrile...

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PUM

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Abstract

The invention discloses a method for increasing the filling amount of a paper product, the method comprises the following steps: premixing plant fibers, chemical fibers and a filler, adding latex to realize the modification of filler particles and fibers by the latex, adding a retention aid, a wet strength agent and a defoaming agent, fully acting, and diluting to a certain concentration to be used for the production of a high-filling paper product. The latex, the retention aid and the chemical fibers are added, so that the fibers are bonded with filler particles, and the water filtering performance of the pulp and the filling amount of a paper product are remarkably improved. Compared with a traditional filling mode, the maximum filling amount of the paper product produced by the method can reach 85wt.%. The method has the advantages of simplicity in operation, low additive amount, high water filtering speed and suitability for continuous production, and has a good commercial prospect.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to a method for increasing the filling amount of paper products. Background technique [0002] Filler is an important raw material for papermaking products. The addition of fillers has many advantages. 1) The use of cheap fillers can greatly reduce production costs, such as adding calcium carbonate to cultural paper; 2) The use of fillers can improve the water filtration performance of slurry, increase the speed of vehicles, and save steam consumption; 3) Adding fillers can give paper products Special properties, such as flame retardant, wear-resistant, antibacterial, etc. However, with the increase of the amount of filler added, while the physical properties of the paper product decline, the retention rate of the filler also decreases rapidly. [0003] The ways to increase the filling amount include optimizing the retention and drainage system, cell filling, fill...

Claims

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Application Information

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IPC IPC(8): D21H27/00D21H11/12D21H11/00D21H13/26D21H13/50D21H13/38D21H13/40D21H17/67D21H17/68D21H17/66D21H17/34D21H17/37D21H17/55D21H21/12D21H21/20D21H21/10
CPCD21H27/00D21H11/12D21H11/00D21H13/26D21H13/50D21H13/38D21H13/40D21H17/675D21H17/68D21H17/66D21H17/34D21H17/37D21H17/55D21H21/12D21H21/20D21H21/10
Inventor 江骁雅刘文万莹
Owner CHINA NAT PULP & PAPER RES INST CO LTD
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