Spraying technology of aluminum profile powder coating

The powder coating is used for aluminum profile powder spraying, and the electrostatic spraying is used in the process Under the influence of the acceleration wind, the friction spray gun is used to make the powder particles carry positive charge when they are ejected from the gun body, contact with the profile with negative charge, generate electrostatic adsorption, and then solidify at high temperature It also enhances the absorption strength of the coating and prevents the film from falling off At present, the powder coating commonly used in the three-sided advertisement is weather resistant polyester powder coating Most of the polyester resin used in the powder coating is saturated type Generally, we can divide it into two categories according to the structure of its end group, i.e end carboxyl group and end hydroxyl group When powder spraying for aluminum profile is combined with heat transfer printing technology, it has a more fashionable trend and a larger development space for powder spraying profile The powder coating spraying process is relatively simple and the yield is high Generally, if the measures are appropriate, the production of unqualified products can be controlled to the maximum extent; the energy consumption is significantly reduced In the production process of ordinary anodizing and electrophoretic coating, the consumption of water and electricity is quite large, especially in the oxidation process of industrial aluminum profiles The pollution degree of water and air is reduced, flake alkali, sulfuric acid and other liquid organic solvents are no longer used, water and air pollution are reduced, the competitive strength of aluminum profile and plastic steel profile as environmental protection products is effectively improved, and some production costs are correspondingly reduced; the labor intensity of workers is significantly reduced, because of the use of automatic assembly line operation, the feeding side of industrial aluminum profile is The use of the fixture has been greatly simplified, the production efficiency has been improved, and the labor intensity has been reduced; the surface quality standard of the raw material has been significantly reduced, and the surface quality of the finished aluminum profile product has been improved; some physical indexes of the aluminum profile film have been significantly improved compared with other surface treatment films, such as hardness, three fold advertisement, wear resistance, acid resistance, which can effectively Prolong the service life of industrial aluminum profiles.