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Method for producing anti-counterfeiting paper

A production method and technology for anti-counterfeiting paper, applied in the field of pulp and paper making, can solve problems such as increasing the production cost of anti-counterfeiting paper, and achieve the effects of high color fiber anti-counterfeiting technology, eliminating cost pressure and saving equipment investment costs.

Inactive Publication Date: 2011-01-19
GOLD EAST PAPER JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The currently disclosed anti-counterfeiting paper production technology needs to add additional anti-counterfeiting materials, such as anti-counterfeiting dyed fiber, anti-counterfeiting fluorescent fiber, microcapsule technology, etc.; paper production cost

Method used

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  • Method for producing anti-counterfeiting paper

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A kind of about 50~200g / m of the present invention 2 The production method of anti-counterfeit paper, this method utilizes the dyeing of dyestuff and fiber to realize the production of anti-counterfeit paper containing colored fiber in the slurry preparation stage, and the specific steps are as follows:

[0029] 1) On the basis of controlling the temperature of the slurry at 40°C and the concentration of the slurry at 5%, carry out segmental design on the conventional papermaking system and determine the dye addition point; the dye addition point can be selected after the pulp dispersion machine or the pulp storage tank Arbitrary addition points before.

[0030] 2) According to the determined dye addition point, the fiber slurry of the conventional papermaking system is dyed, the dye addition amount is 5-150ppm relative to the dry pulp, the slurry flow rate is 500-15000L / min, and the stirring rate is 50-500r / min, The color fiber slurry is obtained; the specific paramet...

Embodiment 2

[0038] Another production method of the anti-counterfeit paper according to the present invention, the method utilizes the dyeing of dyes and fibers in the slurry preparation stage to realize the production of anti-counterfeit paper with colored fibers, and the specific steps are as follows:

[0039] 1) On the basis of controlling the slurry temperature at 20°C and the slurry concentration at 0.1%, the conventional papermaking system is designed in sections to determine the dye addition point.

[0040] 2) According to the determined dye addition point, the fiber slurry of the conventional papermaking system is dyed, the dye addition amount is 5-150ppm relative to the dry pulp, the slurry flow rate is 500-15000L / min, and the stirring rate is 50-500r / min, The color fiber slurry is obtained; the specific parameters are shown in Table 1 to Table 3, wherein Table 1 is for adjusting the amount of dye added, Table 2 is for adjusting the stirring rate, and Table 3 is for adjusting the ...

Embodiment 3

[0043] Another production method of the anti-counterfeit paper according to the present invention, the method utilizes the dyeing of dyes and fibers in the slurry preparation stage to realize the production of anti-counterfeit paper with colored fibers, and the specific steps are as follows:

[0044] 1) On the basis of controlling the slurry temperature at 60°C and the slurry concentration at 10%, the conventional papermaking system is designed in sections to determine the dye addition point.

[0045]2) According to the determined dye addition point, the fiber slurry of the conventional papermaking system is dyed, the dye addition amount is 5-150ppm relative to the dry pulp, the slurry flow rate is 500-15000L / min, and the stirring rate is 50-500r / min, Obtain colored fiber slurry;

[0046] 3) Mix the obtained colored fiber slurry with the fiber slurry, wherein the ratio of the colored fiber slurry to the fiber slurry is 10%, to obtain a mixed slurry, which is directly applied t...

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Abstract

The invention discloses a method for producing anti-counterfeiting paper. At the stage of preparing pulp, the production of the anti-counterfeiting paper of colored fibers is realized by a dye and dyeing of the fibers; and the method particularly comprises the following steps of: performing step-by-step design on the conventional papermaking system to determine a dye adding point based on the conditions that the temperature of the pulp is controlled to be 20 to 60 DEG C and the concentration of the pulp is controlled to be 0.1 to 10 percent; dyeing the fiber pulp of the conventional papermaking system to obtain colored fiber pulp according to the determined dye adding point, wherein the amount of the added dye is 5 to 150ppm relative to absolute dry pulp, the flow rate of the pulp is 500 to 15,000L / minute, and the stirring rate is 50 to 500r / minute; and mixing the obtained colored fiber pulp and the fiber pulp to obtain mixed pulp and directly applying the mixed pulp to manufacturing of the anti-counterfeiting paper, wherein the proportion of the colored fiber pulp to the fiber pulp is 0.1 to 10 percent. The method has the advantages of simplicity, safety, reliability and capability of realizing continuous manufacturing of the anti-counterfeiting paper with pulp under the condition of not increasing equipment investment.

Description

technical field [0001] The invention belongs to the technical field of pulping and papermaking, in particular to a production method of anti-counterfeit paper. Background technique [0002] With the continuous advancement of science and technology and the increasing demand for anti-counterfeit paper products in the consumer market, the research and development and production of anti-counterfeit paper have gradually been highly valued by major paper mills. [0003] At present, the commonly used anti-counterfeiting paper products in my country are mainly divided into four categories: watermark anti-counterfeiting paper, security thread anti-counterfeiting paper, fluorescent anti-counterfeiting paper and laser holographic anti-counterfeiting paper. [0004] Watermark anti-counterfeiting paper is obtained by adding watermark rollers during the paper manufacturing process. Watermark rollers are generally installed between the wire section and the press section of the paper machin...

Claims

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Application Information

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IPC IPC(8): D21H27/00D21H15/10D21H11/00D21H11/12D21C5/00
Inventor 王仁荣张明陈剑於旺盛韦丹王正平
Owner GOLD EAST PAPER JIANGSU