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Colorized transparent anti-counterfeit watermark paper and manufacturing method thereof

A color and watermarking technology, which is applied in the field of papermaking, can solve the problems of low paper strength and low watermark pattern clarity, and achieve good anti-counterfeiting performance, rich colors, and good light resistance

Active Publication Date: 2011-09-21
BAODING BANKNOTE PAPER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The above watermarking techniques have various disadvantages: for example, the uneven distribution of fibers makes the amount of fibers less in local areas of the paper, resulting in low local strength of the paper, and the clarity of the watermark pattern is not high, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 1. Production of color film:

[0052] Under 40 ~ 80 ° C, the water-soluble PVA raw material is made into a 25wt% aqueous solution, and then 0.2wt% of the water-soluble red reactive dye is added to the solution, and stirred evenly;

[0053] 2. Pattern making:

[0054] In the process of making the film, the film plate is first carved with texture patterns of different depths (the texture depth is 0.01~0.05mm), and the above-mentioned polyvinyl alcohol solution is evenly coated on the film plate, and different texture patterns can be formed after treatment and drying. The pattern is made into different patterns according to different anti-counterfeiting requirements. The pattern has obvious concave-convex feel, the pattern is clear and lifelike, and the color has a good sense of hierarchy. The thickness of the produced PVA film is 60 μm.

[0055] 3. Cut the color film into an area of ​​0.2cm 2 circular pattern.

[0056] 4. Add the film into the pulp, and use a directio...

Embodiment 2

[0059] 1. Production of color film:

[0060] At 40~80°C, the water-soluble polyvinyl alcohol raw material is formulated into a 10wt% aqueous solution, and then 0.01wt% of water-soluble blue reactive dye is added to the solution, and at the same time, 1.0wt% is added at 45°C. Color temperature change powder, stir evenly;

[0061] 2. Pattern making:

[0062] In the process of making the film, the film plate is first carved with texture patterns of different depths (the texture depth is 0.01~0.05mm), and the above-mentioned polyvinyl alcohol solution added with anti-counterfeiting substances is evenly coated on the film plate, and after treatment and drying Different patterns can be formed, and different patterns can be made according to different anti-counterfeiting requirements. The pattern has obvious concave-convex feel, clear and realistic pattern, and the color has a good sense of hierarchy. The thickness of the prepared PVA film is 20 μm.

[0063] 3. Cut the color film ...

Embodiment 3

[0067] 1. Production of color film:

[0068] Make the water-soluble polyvinyl alcohol raw material into a 40wt% aqueous solution at 40~80°C, then add 0.3wt% water-soluble red reactive dye (FN-R) to the solution, and add 2.0wt% long-wave (365nm) at the same time red fluorescent powder, stir evenly;

[0069] 2. Pattern making:

[0070] In the process of making the film, the film plate is first carved with texture patterns of different depths (the texture depth is 0.01~0.05mm), and the above-mentioned polyvinyl alcohol solution added with anti-counterfeiting substances is evenly coated on the film plate, and after treatment and drying Different patterns can be formed, and different patterns can be made according to different anti-counterfeiting requirements. The pattern has obvious concave-convex feel, clear and realistic pattern, and the color has a good sense of hierarchy. The thickness of the prepared PVA film is 100 μm.

[0071] 3. Cut the color film into an area of ​​2.0c...

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Abstract

The invention relates to colorized transparent anti-counterfeit watermark paper and a manufacturing method thereof. The colorized transparent anti-counterfeit watermark paper comprises body paper; a colorized thin film is arranged in the body paper; the using amount of the colorized thin film is 0.1 to 10 percent of the area of the paper; and the colorized thin film is colorized polyvinyl acetate (PVA) or a gelatin thin film, and comprises 0.01 to 0.3weight percent of water-soluble dye. The colorized thin film is processed into a desired shape as required; the colorized thin film is added into paper pulp through an orientated releasing device so that the colorized thin film is directionally distributed on a certain part of the paper or uniformly distributed in the paper. The colorized transparent anti-counterfeit watermark paper manufactured by the method has high light resistance, acid resistance, alkali resistance, oxidant resistance, reductant resistance, organic solvent resistance, heat resistance and the like, so the material can be well applicable to anti-counterfeit and encrypting technical field of securities, tickets, currency paper and the like.

Description

technical field [0001] The invention relates to a colored transparent anti-counterfeiting watermark paper and a manufacturing method thereof. The anti-counterfeiting technology can be applied in technical fields such as anti-counterfeiting and encryption, and can also be used in papermaking fields such as securities, bills, banknote paper and the like. Background technique [0002] Watermark paper (often referred to as floating watermark paper) is an ancient and effective traditional anti-counterfeiting technology. Watermarking is the easiest watermarking method to be recognized by the naked eye. It has been used since its inception and has been developed with the continuous development of related technologies. . Watermark paper is in the forming process of the paper web, using online forming technology, when the paper is just interwoven and still contains a certain amount of moisture, the watermark with engraved texture is used to hydraulically stamp the paper surface, so t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/30B32B29/00
Inventor 刘永红曹秀痕朱西赏
Owner BAODING BANKNOTE PAPER CO LTD
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