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Method for manufacturing chemical anti-counterfeiting paper

A production method and technology for anti-counterfeiting paper, which are applied in papermaking, textiles and papermaking, and addition of non-polymeric organic compounds, etc., can solve the problems of inauthentic counterfeit products, difficulty in distinguishing authenticity, and limited first-line anti-counterfeiting effect.

Inactive Publication Date: 2011-08-31
无锡侨颂特种纸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the paper-based anti-counterfeiting methods for paper-based securities, certificates, labels, bills and carton packaging of high-end commodities adopt the first-line anti-counterfeiting technical means that the public can recognize, because the first-line anti-counterfeiting technical features are exposed Yes, it can be identified without the aid of tools and instruments. Counterfeiters often use printing methods to imitate anti-counterfeiting features, and even use fine printing to make counterfeit products reach a high level of confusion, making it difficult for users of products or bills to identify authenticity.
Since the whole counterfeiting process can be realized only through printing equipment and high-quality paper, the first-line anti-counterfeiting effect is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] This embodiment is for making base paper containing phenolphthalein, and 40% phenolphthalein aqueous solution is taken as an example.

[0015] Weigh 5 kg of phenolphthalein, put it in a container, add 7.5 kg of clear water, stir the phenolphthalein in the water evenly, then move the aqueous solution to a ball mill and grind until the particle size is about 15 μm, take it out, and add it to 820 kg of base paper filler with a solid content of 20.0% ( The proportion of phenolphthalein in the base paper filler is 3%), fully stirred evenly, and the prepared coating is passed through a 100-mesh sieve to be used for making base paper.

[0016] Base paper copying steps are:

[0017] A. Beating. The beating concentration is 3.0%~4.0%, and the beating degree is 34~360SR;

[0018] B. Sizing. Online concentration: 0.4%~0.5%, filler (filler prepared above) addition amount: 30~35l / min, pH value: 4.3~4.8, sizing agent in slurry: 2~4 l / min;

[0019] C. Forming. Vacuum degree of va...

Embodiment 2

[0029] This example is a carbonless copy CF paper coated with phenolphthalein. Take 60% phenolphthalein aqueous solution as an example.

[0030] Weigh 3 kg of phenolphthalein, put it in a container, add 2 kg of clear water, stir the phenolphthalein in the water evenly, then move the aqueous solution to a ball mill and grind it to about 10 μm, take it out, and add it to 1068 kg of carbon-free carbon copying CF paper coating with a solid content of 28.0% (use The proportion of phenolphthalein in the carbonless copying CF paper coating is 1%), stir well, pass the prepared coating through a 120 mesh sieve, and coat the carbonless copying CF paper as usual.

[0031] Paper coating steps are:

[0032] A. Coating. Transport the above prepared coating to the coating machine, coat one side of the paper, adjust the air knife air pressure to control the coating amount at 3~5g / m2;

[0033] B. Drying. The coated paper enters the first stage of drying, and the drying temperature is contr...

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Abstract

The invention provides a method for manufacturing chemical anti-counterfeiting paper, relating to the technical field of counterfeiting prevention of special paper. The method comprises the following steps: mixing 3,3-dual(4-hydroxybenzene group)-1(3H)-isobenzofuranone with water in a certain proportion, and then finely grinding the mixture by virtue of a ball mill; then, in a glue solution added into a filled or subjected to top sizing during the paper manufacturing process, manufacturing body paper with pulp according to the common method so that the body paper contains phenolphthalein; or in a painting added during the paper coating process, coating the paper according to the common method, so that the coated paper contains phenolphthalein. The phenolphthalein is used for counterfeiting prevention, which belongs to a secondary relatively- covert chemical anti-counterfeiting means based on appliance verification, thus the law risk, counterfeiting difficulty and expected cost of counterfeiters are greatly increased, and a good anti-counterfeiting function is achieved.

Description

technical field [0001] The invention relates to the technical field of special paper anti-counterfeiting, in particular to a method for making chemical anti-counterfeiting paper. Background technique [0002] Anti-counterfeiting technology is a technology to prevent imitation and counterfeiting, and it is a preventive technical measure taken to protect corporate brands and protect the legitimate rights and interests of consumers. [0003] Most of the paper-based anti-counterfeiting methods for paper-based securities, certificates, labels, bills and carton packaging of high-end commodities adopt the first-line anti-counterfeiting technology that can be recognized by the public, because the first-line anti-counterfeiting technology is characterized by exposed Yes, it can be identified without the aid of tools and instruments. Counterfeiters often use printing methods to imitate anti-counterfeiting features, and even use fine printing to make counterfeit products reach a high l...

Claims

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Application Information

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IPC IPC(8): D21H17/06D21H21/40
Inventor 赵序胜周清朱克明王美和
Owner 无锡侨颂特种纸有限公司
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