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Paper surface sizing agent and method for raising paper permeability resistance

A technology of surface sizing and surface sizing agent, applied in the field of papermaking, can solve the problems of increasing production cost and high price of softwood pulp, and achieve the effect of improving air permeability resistance

Inactive Publication Date: 2015-04-29
GOLD EAST PAPER JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method also has obvious defects, that is, the price of softwood pulp is higher than that of hardwood pulp, and increasing the proportion of softwood pulp will greatly increase production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] The enzymatic starch is formulated into a surface sizing solution. Then borax is prepared into a solution with a concentration of 3%, and then added to the surface sizing solution, mixed evenly, and the amount of borax added is 0.1% of the absolute dry mass of the enzymatic starch. Then use the above-mentioned surface sizing solution after adding borax and the surface sizing solution without adding borax to carry out double-sided surface sizing experiments on paper. Before surface sizing, the raw materials and physical properties of the two groups of paper were the same. After sizing, related tests were carried out on the two groups of papers, and the experimental results are shown in the table below. The control group is the experimental data of double-sided surface sizing of paper with the surface sizing solution without adding borax.

[0024] It can be seen from the table below that the air resistance of the paper surface sized with the surface sizing solution adde...

example 2

[0027] The enzymatic starch is formulated into a surface sizing solution. Then borax was prepared into a solution with a concentration of 3%, added to the surface sizing solution, and mixed evenly. The amount of borax added was 10% of the absolute dry weight of the enzymatic starch. Then use the above-mentioned surface sizing solution after adding borax and the surface sizing solution without adding borax to carry out double-sided surface sizing experiments on paper. Before surface sizing, the raw materials and physical properties of the two groups of paper were the same. After sizing, related tests were carried out on the two groups of papers, and the experimental results are shown in the table below. The control group is the experimental data of double-sided surface sizing of paper with the surface sizing solution without adding borax.

[0028] It can be seen from the table below that the air resistance of the paper surface sized by adding 10% borax to the surface sizing s...

example 3

[0031] The oxidized starch is formulated into a surface sizing solution. Then borax and zinc borate were prepared into 3% concentration solutions, mixed according to the absolute dry mass ratio of 1:9, and added to the surface sizing solution.

[0032]The total amount of boron-containing compound (that is, the mixture of borax and zinc borate) added is 0.1% of the absolute dry weight of the oxidized starch.

[0033] Then use the above-mentioned surface sizing solution after adding the boron-containing compound and the surface sizing solution without adding the boron-containing compound to carry out double-sided surface sizing experiments on the paper. Before surface sizing, the raw materials and physical properties of the two groups of paper were the same. After sizing, related tests were carried out on the two groups of papers, and the experimental results are shown in the table below. The control group is the experimental data of double-sided surface sizing of paper with t...

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PUM

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Abstract

A surface sizing agent is used for sizing of paper surface. The surface sizing agent is prepared from at least one of a natural polymer surface sizing agent and a synthetic polymer surface sizing agent and at least a substance composed of a boron-containing compound. The natural polymer surface sizing agent contains at least one components selected from animal glue, starch and paraffin gel. The synthetic polymer surface sizing agent contains at least one component selected from methylcellulose, carboxymethylcellulose, polyving akohol and polyacrylamide polyurethane. The boron-containing compound contains at least one component selected from boric acid, borate and boron oxide. The addition amount of the boron-containing compound is 0.1-10% of dry mass of the surface sizing agent. The invention also provides a method for raising paper permeability resistance by applying the above surface sizing agent on the paper surface.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a surface sizing solution for paper and a method for using the paper surface sizing solution to carry out surface sizing on paper so as to improve the air permeability resistance of the paper. Background technique [0002] The air permeability resistance of paper refers to the time required for 100ml of gas to pass through a unit area of ​​paper sample under unit pressure, and the unit is s / 100ml. As one of the important physical performance indicators of many paper grades, air resistance reflects the number of voids in the paper structure. Reducing the voids in the paper structure can improve the air resistance of the paper. During the coating process of paper, the moisture and adhesives (latex and coating starch, etc.) in the coating will instantly diffuse and penetrate into the gaps of the paper, reducing the amount of adhesives in the coating, resulting in a decrease in the coatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/16
Inventor 秦昀昌郝妮王威王辰孖
Owner GOLD EAST PAPER JIANGSU
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