Coating is an important process in the manufacture of aluminium sheet. The quality of coating directly affects the decoration effect of aluminium sheet. There are four main factors to form the coating quality of aluminium sheet. Let's let the aluminium sheet manufacturer take us to understand the content of this aspect. Friends who are interested in this aspect must not miss it.
It is required that the interior of the painting room be clean, dust-proof, insect-proof and certain ventilation functions, so as to ensure that the surface quality of the aluminium sheet coating is not polluted. At the same time, the process conditions are changed in time because of the change of temperature.
2. Raw materials
Coatings and aluminium sheets are the most important factors affecting the quality of coatings in the process of painting. Because of the color difference between batches of coatings, the fineness of coatings is insufficient and the coating rate is not high. The improper coordination and stratification of coatings and solvents will directly affect the coating effect and result in defects. Therefore, the selection of raw materials should be strictly controlled.
Coating line requires that the equipment is in good condition, the equipment should work smoothly, there should be no horizontal and vertical jitter, and the coating rollers should be polished delicately. All rollers of the coating machine must be controlled in the allowable scale, otherwise the surface quality of the coating will be seriously affected.
Painting process is closely related to the quality of painting, requiring that the relative linear velocity ratio of painting roll, painting roll, measuring roll and base material be controlled in a certain scale. According to different systems and film thickness of coating products, a certain viscosity scale should be set for coating to ensure smooth painting and promote the progress of product quality. The curing process of coating and oven control must be controlled according to requirements. No arbitrary change is allowed, otherwise the chromatic aberration and function of the coated products will be seriously affected.
The above content is about the aluminium sheet manufacturer's introduction about the elements of aluminium sheet painting. I believe that both the understanding and the knowledge of the whole aluminium sheet will be helpful.
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