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Anti-fake paper board iwth layer dyed area and its making process

A local area and manufacturing method technology, applied in papermaking, textiles and papermaking, fiber raw material processing, etc., can solve the problems of increasing the difficulty of counterfeiting

Inactive Publication Date: 2002-05-15
孙显林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to further increase the difficulty of counterfeiting, save the cost of dyes or colored fibers, and solve the impact on the whiteness of the entire anti-counterfeiting cardboard surface when the number of layers is small and the grammage is low

Method used

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  • Anti-fake paper board iwth layer dyed area and its making process
  • Anti-fake paper board iwth layer dyed area and its making process
  • Anti-fake paper board iwth layer dyed area and its making process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1, see figure 1 , a process flow chart of a method for manufacturing anti-counterfeit cardboard: two independent pulp distribution boxes (5, 6) send pulp into the headbox (9) with their own independent pulp delivery channels (7, 8) respectively, and the pulp distribution box (5) is white pulp, and in the pulp box (6) is red pulp. At the nozzle position (12) of the headbox (9), the pulp box (5) sends the pulp through an independent pulp delivery channel (7). After entering the headbox, it is distributed at the nozzle (10) of the headbox (9) and sprayed out. The pulp distribution box (6) sends the pulp into the headbox through an independent pulp delivery channel (8) and then distributes it in the headbox. The position of the spout (11) of the box (9) is sprayed out, and after the pulp layer is formed on the net table, the pulp fibers in the band-shaped area (14) and the pulp fibers in the band-shaped area (13) are interwoven at the joint Afterwards, the pulp lay...

Embodiment 2

[0022] Example 2, see figure 2 , the anti-counterfeit cardboard is composed of five pulp layers, the upper surface pulp layer and the lower surface pulp layer band-shaped three-dimensional space (1) are embedded with colored fibers (4), the color characteristics of the pulp remain unchanged, all are white; the middle three pulp layers The strip-shaped three-dimensional space (1) overlaps up and down correspondingly, and the color characteristics of the pulp in each layer of strip-shaped three-dimensional space (1) are different, which are blue, red and green respectively, and the rest of the strip-shaped three-dimensional space (1) The color characteristics of the pulp in the part (2) are all white, or all gray, or all black, or all other same color characteristics.

[0023] Analyzing the anti-counterfeiting cardboard described in Example 2, there is a band-shaped three-dimensional space in each layer of pulp layer, so each headbox in the corresponding multi-wire paper machin...

Embodiment 3

[0024] Example 3, see image 3 . The anti-counterfeit cardboard is composed of five pulp layers; the pulp in the strip-shaped three-dimensional space (1) of each pulp layer is white and overlaps up and down correspondingly, and the strip-shaped three-dimensional space (1) of the upper surface pulp layer and the lower surface pulp layer is embedded in the three-dimensional space (1). The colored fiber (4) has a pulp color characteristic of white; the color characteristics of each pulp layer in the remaining part (2) outside the band-shaped three-dimensional space (1) of the middle three pulp layers are blue, red and green respectively.

[0025] Analyzing the anti-counterfeit cardboard described in Example 3, there is a strip-shaped three-dimensional space in each layer of pulp layer, so each headbox in the corresponding multi-wire paper machine must be specially modified, so it is very difficult to imitate; In addition, only the paper pulp in the small strip-shaped three-dimen...

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Abstract

An anti-forgery cardboard and its making method are characterized by that the said cardboard is made up from at least two superimposed layers of pul players, one pulp layer of them has at least one strip area in which the colour characteistic of pulp is different from other parts of the said pulp layer, the difference may be different pulp colour or added colour fibre. The said texture antiforgery cardboard must be produced only by the specially designed laminated cardboard machine, and the cardboard is easily recognized by tearing and grinding.

Description

technical field [0001] The invention relates to a method for manufacturing an anti-counterfeit cardboard, in particular to a method for manufacturing an anti-counterfeit cardboard with layered dyeing in a local area of ​​the cardboard. Background technique [0002] In a kind of white cardboard with the application number 97108807 provided by Hongta Renheng Paper Co., Ltd. of Zhuhai Special Economic Zone, adding colored fibers to the entire bottom or middle layer of the white cardboard, the disadvantages are: the difficulty of anti-counterfeiting is low, Any ordinary paper machine can be produced without any special modification. On November 9, 1996, the inventor applied for a Chinese practical patent - a new type of anti-counterfeiting cardboard (patent authorization number: ZL96245195.9), which dyes the pulp layers that make up the cardboard in layers, using the hue between the pulp layers Differences and different arrangements of color sequences, there are hundreds of vis...

Claims

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Application Information

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IPC IPC(8): D21H21/40
Inventor 孙显林
Owner 孙显林
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