In the automobile door panel manufacturing process, there may be the following effects: 1 Surface pollution: there may be particle pollutants, organic matter, inorganic salts, oxides and other impurities on the surface of the door panel. 

2 reduce the effect of coating and printing: for parts that need to be coated or printed on the door panel, the surface without plasma cleaning may cause problems such as uneven coating, blurred printing or color distortion due to the presence of contaminants and residues. 

(3) it affects the tightness and sound insulation effect: the seal on the door panel is very important for the sound insulation and sealing performance of the car. 

If the bonding between the seal and the door panel is not firm, it may lead to a decline in sealing performance, affecting the sound insulation effect and ride comfort in the car. 

(4) increase the difficulty of post-sequence processing: due to the presence of pollutants and residues on the surface of the door panel, it may lead to bad phenomena in the process of post-sequence processing (such as painting, assembly, etc.), such as coating blistering, shedding and so on. 

This not only increases the processing difficulty and cost, but also may affect the overall quality and reliability of the product. 

The pretreatment of automobile door panel with vacuum plasma cleaning machine can remove surface pollutants and residues, improve surface cleanliness and activity, enhance the effect of coating, printing and bonding, and improve the quality and performance of products. 

At the same time, the plasma cleaning machine can also improve the sealing and sound insulation effect, reduce the difficulty and cost of post-sequence processing, and bring significant benefits for the automobile industry.

Different from the traditional flame method, when the vacuum plasma cleaner is used for pretreatment, the thermal effect on the treated parts is very small, which will not lead to product deformation or loss of bonding force due to excessive treatment; uniform surface activation, better bonding effect, high utilization rate of equipment and good stability of product quality.

After plasma treatment, the Dyne pen is used for measurement, and the dyne value is increased to 52mN/m.