Transfer aluminum holographic photocureable coating as well as preparation method and application thereof

Abstract

The invention belongs to the field of coatings, and discloses a transfer aluminum holographic photocureable coating, which is prepared from the following raw materials in percentage by mass: 10 to 15 percent of oligomer polyurethane resin, 10 to 15 percent of oligomer polypropylene ester resin, 20 to 30 percent of photocureable silicon-containing organic-inorganic hybrid, 20 to 60 percent of reactive diluent and 0.1 to 0.3 percent of flatting agent. A PET mother film can be repeatedly used, aluminum plating can be repeatedly carried out after one-time mold pressing, use of a plastic film is reduced, resource consumption and environmental pollution are reduced, cold mold pressing is adopted in the process, the film surface temperature is 55-60 DEG C, deformation of the PET film cannot be caused, the positioning precision is accurate, only an aluminum plating layer is transferred through an adhesive, and therefore materials are saved; and finally, the coating can realize copying and displaying of information with different depths (1-10 microns), one-step forming is realized, the production speed can reach more than 100m / min, and the production efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of light-curing coatings, in particular to an aluminum-transfer holographic light-curing coating and its preparation method and application. Background technique [0002] Holographic transfer technology is widely used in paper products, glass, ceramics, fabrics, leather and other fields. Especially with the development of laser engraving technology, it can be realized on the above-mentioned many types of commodities, and products that are both colorful and have the effect of positioning holographic anti-counterfeiting . [0003] At present, there are two main processes for the production of transfer aluminum products with positioning holographic effect. The first process is to first coat the release coating on the polyester (PET) film, and then heat press the holographic effect on the metal nickel plate to the release coating of the PET film under a certain pressure on a 180-200°C hot molding press. First,...

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Problems solved by technology

Both of the above two processes require hot pressing at a temperature of nearly 200°C, resulting in large deformation of the PET film, which affects the positioning accuracy, and the PET film is difficult to reuse, and needs to be re-coated and hot-pressed at high temperature every time. Therefore, the raw material consumption is large, The production efficiency is relatively low, and it can only be used for the reproduction of shallow texture information within 1-3μm

In addition, the first process can only be used for information replication within 1-3 μm, and the second process requires multiple steps to operate, and the process is cumbersome

[0004] Patent CN 107905033A mentions that there was once a technology that molded laser information on a biaxially oriented polypropylene (BOPP) film and then transferred it to paper after aluminizing. The laser information on the BOPP film can be retained and transferred to paper repeatedly after re-aluminizing. However, the defect of this technology is that the BOPP film itself has a large amount of tensile deformation, and the composite transfer film is prone to tendons and wrinkles after repeated aluminum plating, and the BOPP is directly molded to copy the laser and then copied to the PET film. On the surface, it is easy to cause the copy information to be incomplete, and there are still deficiencies

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