The cause and solution of shrinkage when there is plastic powder present

Plastic powder is definitely well known and familiar to everyone, and it is widely used in our products. Plastic powder has no coating odor, does not require preservatives, has a variety of colors and good color. The product itself is an environmentally friendly product. After being heated at high temperatures, plastic powder is sprayed onto the surface of the material by compressed air. Through sealing treatment, dust will not leak out, and it can be reused without pollution, so it is widely used. However, many people often experience shrinkage when using plastic sealed bags. Below, we, as plastic powder manufacturers, will analyze the solutions available.

Reasons for shrinkage of plastic powder

Constituent factors:

The pre-treatment degreasing is not careful and complete, leaving oil stains on the surface. Perhaps the shrinkage caused by the residual active agent on the surface after degreasing cannot be cleaned thoroughly by water washing. The compressed air used for electrostatic spraying of plastic powder exceeds the target oil and water content, resulting in contamination of the plastic powder. During the spraying process, solvents containing volatile silicone oil are used around. The oil stains on the suspension chain are blown down by air conditioning to form shrinkage holes on the plastic powder.

Solution:

Improve the temperature of plastic powder pretreatment, extend the pretreatment time, or modify the hanging method, change the spray angle of the nozzle to achieve a clean and neat result; Replace with more suitable and useful degreasers, as each degreaser has a corresponding type of workpiece. Control the concentration and proportion of the pre degreasing tank and degreasing tank solution, reduce the amount of oil carried by the workpiece, and enhance the water washing effect to improve the surface phosphating film.

The above are the reasons for the shrinkage phenomenon when using plastic powder, and the corresponding solutions. We hope to help everyone. We are a plastic powder manufacturer, selling powder coatings, non-standard door plastic powder for anti-theft doors, courtyard door plastic powder, and railing plastic powder. Welcome to inquire by phone.