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Process for making low quantitative opened window safety line anti-forge paper

A production method and technology of safety thread, which are applied in papermaking, papermaking machine, wet end of paper machine, etc., can solve the problems of low paper strength, exposed lines on buried surfaces, poor opening of windows, etc. Effect

Active Publication Date: 2007-09-05
CHINA BANKNOTE PRINTING & MINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And low weight paper (65 ~ 85g / m 2 ) due to low weight and small thickness, it is very easy to cause poor window opening and embedded surface exposed lines. At the same time, the strength of the paper is low, and it is easy to cause paper breakage and broken ends when the safety line is released, affecting normal production.

Method used

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  • Process for making low quantitative opened window safety line anti-forge paper
  • Process for making low quantitative opened window safety line anti-forge paper
  • Process for making low quantitative opened window safety line anti-forge paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: as shown in Figure 1, the manufacture method of low quantitative window security line anti-counterfeiting paper has steps such as making window template, pressing copper mesh, preparing pulp, spreading security thread, papermaking, when making window template, press The depth 2 of the concave part is 1.0mm, and the size of the slope angle 1 is 5° to design a window template, and then the computer converts the designed plan into a machine language that the engraving machine can recognize, and controls the engraving tool on the engraving machine to follow the designed plan. The window template is carved with a knife, and the side view of the window template is shown in Figure 2. The depth 2 of the concave part is 1.0 mm, and the slope angle 1 is 5°. The concave-convex structure 5 of the line is as shown in Figure 3, and then as shown in Figure 4, the prepared pulp is placed in the pulp tank, and the safety thread 6 is placed close to the concave-convex struct...

Embodiment 2

[0015] Embodiment 2: Other steps and methods are as embodiment 1, wherein the recess depth 2 of the window template is 1.3 mm, the slope angle is 14 °, and the final low quantitative anti-counterfeiting paper quantitative is 70g / m 2 .

Embodiment 3

[0016] Embodiment 3: Other steps and methods are as embodiment 1, wherein the concave portion of the window template is tried to be 2.0mm, the slope angle is 20°, and the final low quantitative anti-counterfeiting paper quantitative is 85g / m 2 .

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Abstract

The invention discloses a light weight windowing safety line forge-preventing paper manufacturing method. It belongs to paper forge-preventing manufacturing method. It is aimed at the current technique defect of low weight, small thickness, bad windowing and embedding surface naked wire. The method includes the following steps: controlling cove depth of windowing stencil plate between 1.0 to 2.0mm; and its grade is between 5 to 20 degree; pressing copper web; preparing paper pulp; discharging safety line; manufacturing paper to form low weight forge-preventing paper with 65-85g / m2 weight. It can extensively be applied to safety line windowing forge-preventing of low weight forge-preventing paper.

Description

technical field [0001] The invention relates to a method for making anti-counterfeit paper, in particular to a method for making anti-counterfeit paper with a low-quantity window security thread. Background technique [0002] The window security line has both the sensory detection anti-counterfeit mark (holographic icon) and the machine automatic detection mark (magnetic code). The large amount of information attached to it can become a reliable condition for people to distinguish the authenticity. Anti-counterfeiting technology is increasingly favored. Opening the window means that one side of the safety thread in the paper is not covered by paper fibers intermittently, and the windowing surface is required to be clean and the embedded surface is completely covered. And low weight paper (65 ~ 85g / m 2 ) due to low weight and small thickness, it is easy to cause poor window opening and embedded surface exposed lines. At the same time, the strength of the paper is low. Con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21F1/44D21H21/42
Inventor 石勇骆富文李政
Owner CHINA BANKNOTE PRINTING & MINTING