Anti-fake ticket thermo-sensitive paper and preparing method thereof
A thermal paper and ticket technology, which is applied in the fields of reproduction/marking method, paper making, paper coating, etc., can solve the problems of lack of anti-counterfeiting function and economic loss, and achieve the effects of easy production control, simple identification, and simple and flexible preparation method.
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Embodiment 1
[0018] Such as figure 1 As shown, the anti-counterfeiting ticket thermal paper is composed of base paper layer 1, precoat layer 2 and color developing layer 3.
[0019] The production process of the base paper layer and the pre-coat is an existing process, and the pre-coat coating composed of calcined kaolin, calcium carbonate, polystyrene hollow sphere resin, calcium stearate, polyvinyl alcohol, starch latex, and additives is adopted. It is uniformly coated on the heat-sensitive base paper by blade coating or curtain coating, and then dried and calendered to form heat-sensitive pre-coated paper.
[0020] The color-developing layer is composed of a color-developing agent, a colorless dye, an anti-counterfeiting paint and an auxiliary paint. Take 80kg of 2-methyl-6-(N-ethyl-N-4-tolylamine) fluorane, 10kg of polyvinyl alcohol, and 10kg of calcium silicate and mix evenly; use a grinder to control the particle size of the paint to 0.5um; Get ground anti-counterfeit paint 5kg, 4-...
Embodiment 2
[0023] On the basis of Example 1, the chromogen is replaced by 4,4'-sulfonyl bis[2-(2-propenyl)]phenol, and the leuco dye is replaced by 2-(2',4'-dimethyl Anilino-3-methyl-6-diethylaminofluorane, the chromogenic material in the anti-counterfeiting coating is replaced by 1,2-benzo-6-(N-ethyl-N-isoamylamine) fluorane, All the other carry out with the step described in embodiment 1.
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