Coating method for polyurethane paint

Abstract

The invention discloses a coating method for polyurethane paint. The coating method includes the following steps: (1) the surfaces of parts to be coated with the polyurethane paint are cleaned; (2) the treatment conditions of the surfaces of the coated parts are checked; (3) priming paint is sprayed to the to-be-sprayed parts with the surfaces treated to be qualified, the parts are placed for one hour at the room temperature after the priming paint is sprayed, and then the parts are placed in a drying oven for curing, wherein the thickness of a spraying coating ranges from 20 micrometers to 25 micrometers; (4) finish paint is sprayed to the parts obtained after the priming paint is sprayed, the parts are placed for 30 minutes at the room temperature after the finish paint is sprayed, and then the parts are placed in the drying oven for curing, wherein the thickness of a spraying coating ranges from 40 micrometers to 50micrometers; and (5) the appearance of the paint layer is checked, and the qualified product is baled to be put in storage. By means of the coating method, the surfaces of the parts obtained after the polyurethane paint is sprayed in a brushing manner are flat, the color is consistent, and the aesthetic property is good.

Description

technical field [0001] The invention relates to the field of polyurethane paint spraying, in particular to a coating method of polyurethane paint. Background technique [0002] Polyurethane paint has good abrasion resistance, toughness and fullness, bright color, oil resistance, benzene solvent resistance, water resistance, boiling water resistance, sea water resistance, acid, alkali, salt corrosion and chemical atmosphere, and has good outdoor weather resistance. Therefore application is very extensive, yet in the prior art, the coating method for polyurethane paint is unreasonable, causes the coating of the parts after coating polyurethane paint to be uneven, and aesthetic property is poor, causes unnecessary loss to manufacturer. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a coating method of polyurethane paint. The coating method has a perfect process, and the surface of the parts after brushing the ...

AI Technical Summary

Problems solved by technology

[0002] Polyurethane paint has good abrasion resistance, toughness and fullness, bright color, oil resistance, benzene solvent resistance, water resistance, boiling water resistance, sea water resistance, acid, alkali, salt corrosion and chemical atmosphere, and has good outdoor weather resistance. Therefore, it is widely used, but in the prior art, the coating method for polyurethane paint is unreasonable, resulting in uneven coating of parts coated with polyurethane paint, poor aesthetics, and unnecessary losses to manufacturers.