A heat-sensitive non-gritty printing plate and its preparation method and application
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A grit-free, heat-sensitive technology, used in printing plate preparation, printing surface preparation, printing plates, etc., can solve problems such as increased plate costs and environmental pollution, save electricity, protect the environment, and achieve high ratios. The effect of surface energy
Inactive Publication Date: 2019-01-18
BEIJING ZHONGKE NANO THINK PRINT TECH
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Problems solved by technology
A large amount of acid and alkali must be used to pretreat the aluminum plate during anodic oxidation, and the waste liquid of acid and alkali not only easily causes great pollution to the environment, but also increases the overall cost of the plate
Method used
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Embodiment 1
[0028] Zinc oxide with a particle size of 3000nm is evenly sprayed on an aluminum plate, and then a layer of thermal imaging composition is coated on the aluminum plate by a spin coating method, and dried to obtain a thermal non-gritty printing plate.
[0029] The thermal imaging composition is composed of 10g of 1-methoxyphenyl-3,5-bistrichloromethyl triazine, 80g of phenol-formaldehyde resin, 5g of methoxymethylated melamine, and 5g of molybdenum Cyan dye, composed of 0.5g of basic brilliant blue, finally added 500g of solvent cyclohexanone and mixed evenly.
Embodiment 2
[0031] Alumina with a particle size of 3000nm is uniformly dispersed in phenolic resin, and then coated on a copper plate, the mass ratio of alumina and phenolic resin is 1:10; finally, a layer of thermal imaging composition is coated on it by spin coating , drying, that is, a heat-sensitive non-gritty printing plate.
[0032] The thermal imaging composition is composed of 15g of 1-p-methoxystyryl-3,5-bistrichloromethyl triazine, 50g of poly-p-hydroxystyrene, 10g of methoxymethylated phenol resin, 3g of merocyanine dye, 1g of basic brilliant blue, and finally add 500g of solvent dichloromethane and mix evenly.
Embodiment 3
[0034] Evenly disperse zinc oxide with a particle size of 200nm in acrylic resin, and then coat it on an aluminum plate. The mass ratio of zinc oxide and acrylic resin is 1:6; finally, coat a thermal imaging layer on it by spin coating method. The composition is dried to obtain a heat-sensitive non-gritty printing plate.
[0035] The thermal imaging composition is composed of 20g of 1-p-methoxystyryl-3,5-bistrichloromethyl triazine, 70g of phenol-o-cresol-formaldehyde resin, and 5g of methoxymethylated Melamine, 5g of methoxymethylated phenol resin, 5g of merocyanine dye, 1g of malachite green, and finally add 500g of solvent methyl ethyl ketone and mix evenly.
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Abstract
The invention discloses a heat-sensitive non-grain printing plate and a preparation method thereof. The heat-sensitive non-gritty printing plate is composed of a support body, a hydrophilic layer and a heat-sensitive layer, and the hydrophilic layer and the heat-sensitive layer are sequentially coated on the support body. In the present invention, nano-scale and / or micron-scale particles or a composition containing nano-scale and / or micron-scale particles are coated on the surface of the support to obtain a hydrophilic coating, and the prepared hydrophilic layer has a suitable roughness, so that The surface of the base is hydrophilic and water-retaining. The presence of nano-scale and / or micron-scale hydrophilic particles in the hydrophilic layer not only meets the requirements of ink absorption, but also improves the wear resistance of the surface of the plate substrate, and at the same time, the adhesion of the hydrophilic layer to the support and the heat-sensitive layer The knot strength is very good. The present invention not only improves the performance of the existing thermosensitive plate, but also avoids the environmental pollution caused by the waste acid and lye produced by the electrolysis and oxidation of the aluminum plate by the existing thermosensitive plate, and the water consumption Save 70% and save about 50% in electricity consumption.
Description
technical field [0001] The invention belongs to the technical field of printing plate preparation, and in particular relates to a heat-sensitive non-gritty printing plate and a preparation method thereof, which are applied in the printing field. Background technique [0002] There are three main types of digital printing technologies: silver halide technology, high-sensitivity technology, and the latest heat-sensitive technology. The digital offset printing plate made by heat-sensitive technology is called heat-sensitive plate. The photosensitive range of the thermal version is 830-1064nm, or even wider. The production process of the thermal plate is: plate base cleaning - degreasing - cleaning - electrolytic sand mesh - washing - ash removal - washing - oxidation - washing - sealing - washing - drying - coating solution - drying - cutting - Package. The working principle of the thermal plate is: when the infrared laser of the thermal plate-making machine scans the plate,...
Claims
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Application Information
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