Transparent powder coating is a kind of powder coating. Its production process is roughly the same as that of powder coating. It needs to go through the following production processes:
Batching→premixing→melt extrusion→tabletting→crushing→sieving→inspection. Due to the poor anti-pollution ability of transparent powder coatings, the process control during the entire production process is particularly strict, otherwise defects such as shrinkage cavities and mottled colors are prone to occur.
In the production process of transparent powder coatings, every small process link plays a decisive role in the quality of the final product. Because of the above production process need to pay attention to some details:
1. When choosing a curing system, you must pay attention to it. If the melting point of the curing agent is close to the baking temperature of the coating film, the melting and crosslinking reactions will occur at the same time, and eventually the leveling will not be particularly good;
2. When selecting raw materials, the activity of the reaction product of resin and curing agent should be considered, because this will affect the storage stability of the powder;
3. Carefully screen leveling agents with high transparency;
4. The compatibility of the resin is poor, and the production process must be strictly controlled to prevent cross-contamination;
5. Be sure to pay attention to the compatibility between the transparent coating and the base coating to ensure good interlayer adhesion.
In short, every detail in the production process of transparent powder coatings needs to be paid attention to. Only in this way can the quality of transparent powder coatings produced be qualified, and shrinkage cavities, mottled colors and other defects are not easy to appear during use. As a new type of architectural coating, powder coatings will be more and more widely used in the field of architectural coatings because of their environmental protection and green features!
