Method for producing optical variable device (OVD) two-dimensional code hot stamping foil through aluminum washing process
A technology of two-dimensional codes and hot stamping foils, which is applied in the field of hot stamping foil preparation, can solve the problems of time required for operators to endanger the environment, single anti-counterfeiting marks and anti-counterfeiting functions, and low difficulty in production scale. The effect of simple requirements, improved anti-counterfeiting technology, and difficulty in expanding production scale
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Embodiment 1
[0025] The method for producing OVD two-dimensional code hot stamping foil by the aluminum washing process described in this embodiment comprises the following steps:
[0026] a. Coating the release layer and the information layer: the release layer and the information layer are respectively coated on the PET film by a high-precision high-speed coating machine;
[0027] b. Molding: the PET film coated with the release layer and the information layer is molded by a positioning molding machine;
[0028] c. Printing varnish: use a printing machine to print protective varnish on the molded film to improve the adhesion between layers and enhance the peeling effect. When printing protective varnish, use an anilox roller of 180 mesh / 30μm to print. Enter the oven to dry, the temperature is controlled at 90°C, and store for 24 hours before entering the next process, so that the protective layer can be cured. In order to improve the curing effect, a curing agent can be added to the varn...
Embodiment 2
[0034] The method for producing OVD two-dimensional code hot stamping foil by the aluminum washing process described in this embodiment comprises the following steps:
[0035] a. Coating the release layer and the information layer: the release layer and the information layer are respectively coated on the PET film by a high-precision high-speed coating machine;
[0036] b. Molding: the PET film coated with the release layer and the information layer is molded by a positioning molding machine;
[0037] c. Printing varnish: use a printing machine to print protective varnish on the molded film to improve the adhesion between layers and enhance the peeling effect. When printing protective varnish, use an anilox roller of 210 mesh / 40μm to print. Enter the oven to dry, the temperature is controlled at 90°C, and store for 24 hours before entering the next process, so that the protective layer can be cured. In order to improve the curing effect, a curing agent can be added to the varn...
Embodiment 3
[0043] The method for producing OVD two-dimensional code hot stamping foil by the aluminum washing process described in this embodiment comprises the following steps:
[0044] a. Coating the release layer and the information layer: the release layer and the information layer are respectively coated on the PET film by a high-precision high-speed coating machine;
[0045] b. Molding: the PET film coated with the release layer and the information layer is molded by a positioning molding machine;
[0046] c. Printing varnish: use a printing machine to print the protective varnish on the molded film to improve the adhesion between layers and enhance the peeling effect. When printing the protective varnish, use an anilox roller of 200 mesh / 35μm to print. Enter the oven to dry, the temperature is controlled at 90°C, and store for 48 hours before entering the next process, so that the protective layer can be cured. In order to improve the curing effect, a curing agent can be added to ...
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