The factors that affect the quality of PU toy paint are mainly as follows:
Raw material quality: The main raw materials of PU paint include polyurethane resin, curing agent, solvent, etc. The quality of raw materials directly affects the hardness, glossiness, wear resistance and other properties of the paint film.
Formula design: The proportion, selection and compatibility of different components in the formula of PU paint will affect the performance of the paint, including leveling, adhesion, weather resistance, etc.
Coating process: The coating process (such as spraying, brushing, etc.) and coating conditions (such as temperature, humidity, coating thickness) will affect the uniformity, adhesion and durability of the coating.
Curing process: The curing process of PU paint is crucial to the final quality of the coating. The curing temperature, time, humidity, etc. must be well controlled, otherwise the paint film may become sticky and the hardness is insufficient.
Environmental factors: Humidity, temperature and pollutants (such as dust, etc.) in the air may affect the quality of the coating, resulting in blistering, cracking or poor adhesion of the paint film.
Storage conditions: The storage conditions of the paint, such as temperature, humidity, and exposure to sunlight, may cause changes in the paint's performance and affect the use effect.
Cleaning: The cleanliness of the toy surface will also affect the adhesion of the paint film. An unclean surface may cause the coating to be loosely adhered and easy to fall off.
Coating thickness: Too thick or too thin a coating will affect the quality of the paint film. A thick coating may cause the paint film to crack, while a thin coating may not provide sufficient protection.
These factors will affect the final effect of PU toy paint. Ensuring that each link is precisely controlled is the key to ensuring coating quality.
