1、 Raw materials

Coatings and aluminum coils are the most important factors affecting the coating quality in the baking powder spraying process. Due to the color difference of the batch coating, the coating fineness is not enough, the coloring rate is not high, the coating and solvent are poorly matched, and the coating is layered. It will directly affect the coating effect and cause defects. The unevenness, uneven film thickness and poor edge deflection of aluminum coil substrate also directly affect the product quality and overall use. Therefore, the selection of raw materials should be strictly controlled.

2. Equipment

The paint powder spraying process requires that the coating equipment is in good condition, the coating equipment operates stably, and there is no horizontal and vertical jitter. The coating roller needs to be finely ground. The lateral runout of all rollers of the coater must be controlled within the allowable range, otherwise the surface quality of the coating will be seriously affected.

3. Process

The baking powder spraying is closely related to the coating quality, and the relative linear speed ratio between the coating roller, coating roller, metering roller and the substrate is required to be controlled within a certain range. It is necessary to set a certain viscosity range for the coating according to different systems and film thickness of coating products to ensure the smooth progress of the coating and promote the improvement of product quality. During the curing process of baking paint and powder spraying coating, the oven control must be controlled as required and must not be changed at will, otherwise the color difference and performance of the coating products will be seriously affected.

4. Environment

The interior of the room shall be clean, dust-proof, insect proof and have certain ventilation performance to ensure that the coating surface quality is not polluted. At the same time, the process conditions change in time due to temperature changes.

5. Human factors

The operator's sense of responsibility, technical level and operation specification are the keys to obtain high-quality coating effect. Therefore, it is necessary to strengthen the training of operators to enable them to master the principles and key points of technology, strengthen their responsibilities, operate in strict accordance with the operating procedures, and ensure high-quality paint products. The above factors are interrelated and affect each other.