Method for improving surface energy of aluminum plate by using plasma

Abstract

The invention relates to a method for improving surface energy of an aluminum plate by using a plasma, which is characterized in that a plasma generating device is used for generating the plasma, andactivation treatment of the surface of the ordinary aluminum plate is implemented by leading the ordinary aluminum plate to pass through the plasma, so as to achieve the purpose of improving the surface energy of the aluminum plate, then ink is jetted on the surface of the aluminum plate after treatment, and the ordinary aluminum plate refers to an aluminum alloy plate which leads the surface to form dense sand meshes by the technologies of electrolytic coarsening and anode oxidation. The method has the advantages that the uniformity of the surface treatment is good, the method has the roles of surface cleaning and etching and can increase the contract specific surface area and improve the wetting adhesion and the spreadability, a coating layer can be very thin, the method does not have the problems of uncoating and uneven coating and simultaneously avoids the negative impacts on the surface appearance of the plate due to the use of a surfactant, the surface treatment is directly carried out on the surface of a sand mesh layer, the method does not use an intermediate layer, active particles can generate strong chemical bonds, improve the adhesion and lead the press run of a produced printing plate to be high, the production cost is low and the treatment speed is fast.

Description

technical field [0001] The invention relates to a method for improving the surface energy of an aluminum plate by using plasma. The application fields include: surface treatment of sandy aluminum plates before inkjet in the inkjet CTP process, and before primer coating in the traditional PS and CTP plate production processes. Surface treatment of grainy aluminum plate, surface treatment of undercoat before applying photosensitive adhesive. Background technique [0002] The environment-friendly inkjet CTP (computer-to-plate) offset printing plate is gradually accepted by more and more printing companies due to its advantages of simple production process, no printing and developing process, environmental protection and low printing cost. Its production process is to print the ink directly on the aluminum plate base, but because the aluminum plate base is not easy to absorb ink, the ink cannot spread well when printed on the aluminum plate base, and even flow, and cannot form c...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a method for improving the surface energy of the aluminum plate with plasma, so as to solve the problem that the surface energy of the aluminum plate in the prior art is low, so that the surface of the aluminum plate cannot quickly, firmly and stably absorb the coating liquid. As a result, the ink spreads unevenly on the surface of the aluminum plate during the inkjet CTP production process, and a series of problems caused by the coating process in the traditional CTP and PS plate production process

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