Method for raising anti-pollution of paper products

A technology for paper products and paper sheets, applied in papermaking, textiles and papermaking, fiber raw material processing, etc., can solve problems such as end of service life, banknote image discount, etc., and achieve the effect of improving surface performance and improving stability

Active Publication Date: 2007-03-14
CHINA BANKNOTE PRINTING & MINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Contaminated banknotes are not only visually compromised, they can als

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Notes:

[0029] "○" indicates that the pollutants have not penetrated into the surface of the paper, and have not left obvious traces at the same time;

[0030] "◇" indicates that the pollutants penetrated into the surface of the paper, but did not leave obvious traces after standing for a period of time;

[0031] "◆" indicates that the pollutants have penetrated into the surface of the paper and also left obvious traces.

Embodiment 2

[0033] The unsized paper (full cotton pulp) is coated with the paper sheet by the groove surface sizing process according to the following sizing formula for surface sizing, and then all the above-mentioned pollutants and the banknote paper produced by the traditional process (pulping And papermaking process is the same, but can be treated with conventional surface sizing agent) for comparison.

[0034] Sizing agent formula (percentage by weight): 1.0% of fluorine-containing acrylic acid polymer, polyvinyl alcohol (produced by Sichuan Vinylon Factory, relative molecular weight 12×10 4 ~17×10 4 ) 8%, styrene-acrylic acid emulsion (manufactured by Guangxi Nanning Bosco Industry and Trade Co., Ltd.) 1.0%, mixed into an aqueous solution.

[0035] Gluing temperature: 60°C.

[0036] Pollutants

coffee

soy sauce

vinegar

milk

salad oil

lard

ink

Example paper

○

○

○

○

○

○

▲

Traditional craft ...

Embodiment 3

[0042] Embodiment 3 Detection of paper folding endurance and fracture length

[0043]

[0044] According to industry standards, the folding endurance of banknote paper is required to be no less than 2,000 times (double folded), and the breaking length is no less than 5,000 meters. The above data shows that after water and oil repellent treatment, the water and oil repellent has little effect on the more important physical indicators of paper, such as folding resistance and fracture length, and they are all within the normal parameter range.

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PUM

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Abstract

The present invention relates to method of making paper product posses waterproof and oilproof effect. Fluorous acrylic acid polymer of the molecular expression [C8F17SOR(CH2)2CRO-CH2]n, where R is C1-C5 alkyl group and n is 2-5, is used as the waterproof and oilproof agent for paper, and is applied into paper pulp or on the surface of paper sheet to obtain antifouling paper. The present invention is suitable especially for various bills, such as banknote.

Description

technical field [0001] The invention relates to papermaking technology, in particular to a method for making paper products waterproof and oil-proof during the papermaking process, so as to achieve the purpose of improving the dirt resistance of paper products, especially paper products with anti-counterfeiting features. Background technique [0002] Paper products, including paper and cardboard, especially bills in the field of circulation, when encountering water or oil stains, the surface is easily dirty, and its performance will be reduced, or even unusable. Paper with anti-counterfeiting features, especially banknotes, has the most contact with various groups of people in the field of circulation, so it is most likely to be contaminated. Banknotes have poor physical and chemical properties such as dirt resistance, water and oil resistance, and their large circulation volume makes it difficult to keep themselves clean. Therefore, banknotes are undoubtedly considered the ...

Claims

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Application Information

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IPC IPC(8): D21H21/14
Inventor 张荣禹赵刚马山沙涛李向明刘永红
Owner CHINA BANKNOTE PRINTING & MINTING
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