Vacuum electroplating glass process

Abstract

The invention discloses a process for performing vacuum plating on glass. The method comprises the following steps of: (1) cleaning the surface of a glass semi-finished product, namely soaking the glass semi-finished product in cleaning liquid medicine for 5 to 10 minutes; (2) performing electrostatic dust removal on the glass semi-finished product; (3) spraying primer, heating the primer and the semi-finished product to the temperature of between 60 and 80 DEG C, wherein the line speed of a production line is between 6 and 12 meters / minute; (4) illuminating by ultraviolet rays, namely illuminating for 5 to 10 seconds, wherein the distance between an ultraviolet (UV) tube and a product is between 15 and 20 centimeters, and the distance between key positions or dead angle positions of the UV tube and the product is between 10 and 15 centimeters; (5) plating a film under vacuum, wherein the thickness of the film is between 15 and 500 nanometers, and a film plating layer is an aluminum layer or a chromium layer; (6) spraying finishing paint, namely heating the finish paint and a film plating finished product to the temperature of between 60 and 80 DEG C uniformly, wherein the line speed of the production line is between 6 and 12 meters / minute; and (7) illuminating by the ultraviolet rays, namely illuminating for 5 to 10 seconds, wherein the distance between the UV tube and the product is between 15 and 20 centimeters, and the distance between key positions or dead angle positions of the ultraviolet tube and the product is between 10 and 15 centimeters. By the process for performing vacuum plating on the glass, the adhesive force of coatings is enhanced, and the curing quality of coating layers is improved.

Description

technical field [0001] The invention relates to a vacuum electroplating process, in particular to a vacuum electroplating glass process. Background technique [0002] Vacuum electroplating is a coating method that deposits various metal and non-metal films on the glass surface by distillation or sputtering under vacuum conditions. In this way, a very thin surface coating can be obtained, with high speed, good adhesion, and little pollution to the environment. [0003] The general vacuum plating process is as follows: product surface cleaning, static removal, primer spraying, primer drying, vacuum coating, topcoat spraying, topcoat drying, and packaging. [0004] Because the surface of glass semi-finished products is often not smooth enough, or air bubbles remain, direct electroplating will result in rough surface, low gloss, poor metal feeling, and bubbles, blisters and other adverse conditions. After spraying a layer of primer, it will form A smooth and flat surface, and ...

AI Technical Summary

Problems solved by technology

[0005] In the past, the coating of vacuum electroplating products was brittle or not strong enough, and it was often easy to fall off. This is because the usual process has the following defects:

[0006] (1) The surface of the glass semi-finished product is usually cleaned by soaking in water for 3-5 minutes. The removal of dust and oil stains is not thorough enough, resulting in insufficient adhesion between the paint and the glass surface;

[0007] (2) When the primer or topcoat is sprayed, the compressed air contains impurities, which will cause the coating to be disturbed by external factors such as impurities, and affect the adhesion of the coating to the glass surface;

[0008] (3) The softness of the primer coating is not enough, which leads to the weakening of the adhesion of the aluminum layer, chromium layer oxide, etc. on the primer coating in the vacuum coating coating, which in turn affects the firmness of the top coating;

[0009] (4) When the primer and topcoat are sprayed, the temperature and line speed are not set exactly, resulting in unstable paint adhesion;

[0010] (5) Unreasonable parameter settings when the primer and topcoat are drying, resulting in incomplete drying of the coating, not firmly attached to the glass, or excessive drying, resulting in brittle coating