UV chill casting process of holographic laser anti-counterfeiting film

A holographic laser and anti-counterfeiting film technology, which is applied in the post-processing of printing, printing, printing devices, etc., can solve the problems of slow production speed, power consumption, organic solvent residue, etc., to expand the application field, stabilize the plate distance change, Effect of production cost reduction

Active Publication Date: 2011-10-12
ZHEJIANG MINONG CENTURY GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although embossing laser holography technology is still the most widely used public anti-counterfeiting technology at home and abroad so far, on the one hand, this technology has high manufacturing cost and slow production speed; 200℃), high pressure (3Kg / cm 2 ) production conditions, so it is necessary to continuously heat the oil of the equipment, which consumes a lot of electric energy, and the high pressure also causes the deformation of the film, and because of the fluctuation of temperature and pressure, the deformation size will be different, and it is difficult to meet the requirements of the concave diameter of the reel. printed request
Furthermore, the solvent-based coatings used in the coating process tend to have a large amount of harmful solvents volatilized into the atmosphere during use, which does not meet environmental protection requirements, and the problem of residual organic solvents is not conducive to improving the environmental protection performance of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The UV cold casting process is a printing conceptual process that uses UV coatings to transfer the information on the laser plate to the substrate. The production process is when the substrate PET base film passes through the coating equipment (coating machine) to coat the UV varnish Coat evenly on the PET base film to form a uniform and dense UV varnish layer. The thickness of the UV varnish layer can be adjusted according to the needs of the line number and depth of the anilox roller. The larger the value, the thicker the varnish layer; in the case of a certain depth value, the more anilox roll lines, the thinner the varnish layer. The pressure value of the coating roller is 0.15Mpa; and then under the irradiation of UV lamps, the information on the laser plate roller is completely transferred to the UV varnish layer. At this time, two UV ultraviolet lamps are used for irradiation, and the power of each is 12KW, the PET base film of the substrate passes through the UV...

Embodiment 2

[0021] The difference between this example and Example 1 lies in that the pressure value of the joint pressure of the coating rollers when coating the varnish on the base film is 0.3Mpa.

[0022] The pressure value of the composite pressure roller is 0.3Mpa, and the base film is irradiated by UV lamp at a speed frequency of 30Hz.

[0023] The winding tension value is 5.886N.

[0024] The pressure value of the peeling roller is 0.2Mpa.

Embodiment 3

[0026] The difference between this example and Example 1 is that the pressure value of the coating rollers when coating the varnish on the base film is 0.2Mpa.

[0027] The pressure value of the composite pressure roller is 0.25Mpa, and the base film is irradiated by UV lamp at a speed frequency of 20Hz.

[0028] The winding tension value is 4.905N.

[0029] The pressure value of the peeling roller is 0.18Mpa.

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PUM

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Abstract

The invention provides a UV chill casting process of a holographic laser anti-counterfeiting film. The existing holographic film (complex film) production processes comprises the following steps: blending, coating, die stamping, aluminizing, compounding, stripping, parting cut, rewinding and the like. Such methods are characterized by high production cost and adverse environmental impact. The process of the invention comprises the following steps: coating a UV varnish layer on a base film; performing complete information transfer under UV light irradiation; separating the base film from a printing roller by a wiper roll; and rolling. The process is characterized by simple process, removing the die stamping step, needing no heating and compression in the die stamping step, reducing energy consumption, reducing the production cost by about 40%, and producing no environmental pollution.

Description

technical field [0001] The invention relates to a production process of laser anti-counterfeiting materials by a transfer method, and belongs to the technical field of processing holographic laser anti-counterfeiting materials. Background technique [0002] Anti-counterfeiting materials made by holographic laser technology have been widely used. At present, the processing procedures of most holographic film (composite film) production include: batching, coating, molding, aluminum plating, compounding and peeling, slitting and rewinding, etc. process steps. The coating process is to use the coating equipment (coating machine) to evenly coat the solvent-based coating liquid on the PET or BOPP base film to form a uniform and dense coating, which is used to separate the aluminum layer from the base film during peeling. The film is separated (the bonding force is better); the molding process is a process of embossing the relief pattern on the nickel plate on the coating or alumi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M1/24B41M7/00B41F19/02
Inventor 胡爱军
Owner ZHEJIANG MINONG CENTURY GRP
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