Powder coating production is a process in which some inputs of goods and services are converted into powder coatings using factors such as labor and capital, under the responsibility, control and management of institutional units.
Powder coating is a powder coating composed of synthetic resin, fillers, pigments, curing agents and additives. As a new type of environmentally friendly coating, powder coating has the advantages of small environmental pollution, low resource and energy consumption, low production cost, and high production efficiency. As the production volume of powder coatings increases, its application areas are also gradually expanding. Powder coatings are gradually replacing other solvent-based coatings and becoming the most promising coatings in modern society.
The production principle of powder coating: Add solid materials such as synthetic resin, fillers, pigments, curing agents and additives to the mixer in a certain proportion and formula for pre-mixing. The premixing process should be operated without water or other solvents. The material passing through the mixer is melted at high temperature by the extruder, and after complete mixing, it enters the cooling tablet press to be cooled and pressed into thin sheets.
After passing through the crusher, the flakes enter the cyclone separator. The separated coarse powder is screened to obtain the finished powder coating, and the fine powder is recovered. The powder coating production process does not involve any chemical reactions and is a purely physical process.
Factors affecting the quality of powder coatings
1. Quality of raw materials
The quality of raw materials plays a decisive role in the quality and performance of powder coatings. Therefore, every raw material should be chosen appropriately. The structure and performance of synthetic resin are the most important factors that determine the quality of powder coatings.
2. Formulation of formula
In the process of formulation and selection of powder coatings, special consideration should be given to the internal relationship of each component. Excellent miscibility between components is the basis for ensuring the quality of powder coatings. If you ignore this, it will be difficult to obtain the ideal coating effect. The synthetic resin in the powder coating component determines the basic properties of the coating.
3. Selection of production equipment
The production of powder coating is a physical process. Production equipment has an important impact on the stability of the formula and the quality of powder coatings. The choice of powder coating production equipment depends to a large extent on the type of product to be produced, quality requirements and production batch size. Premixing is the first step in powder coating production. It mixes and disperses all components to create a good uniform system for melt mixing.