Introduction to the paint process of steel doors

Paint is used as the post-process of steel wood door factory processing, and its advantages and disadvantages directly affect the final use effect. At the same time, the cost of paint is also one of the largest parts of the cost of Steel Doors. The types of paints are broadly classified into phenolic paints, alkyd paints, polyurethane paints, nitrocellulose paints, polyester paints and PU paints. Among them, phenolic paint and alkyd paint are basically eliminated in the decoration due to the poor texture and adhesion of the paint film. A large number of PU paints used in lacquer, polyester paint and high-grade furniture are used. Nitrocellulose lacquer is widely used because of its simple construction and suitable for manual operation, but its paint film is thin, the hand feel is not good, and the effect is not satisfactory.

Due to the cost processing methods and equipment problems, 90% of the steel doors on the market currently use polyester paint, and a few manufacturers use PU paint. In general, polyester paints and PU paints have to go through six processes, such as color finding, three bottoms and two sides. Some brands increase the curing and waxing process. Therefore, when selecting steel doors, paint is one of the factors that must be considered. It directly affects the texture, feel, moisture, environmental protection, durability, and yellowing resistance.

According to the survey, some steel-wood door enterprises have much room for improvement in the painting process. Some products can be viewed from a distance, not near. From a distance, it is magnificent or calm, but from a close inspection, the surface of the steel-wood door is unsatisfactory. Orange peel, collapse, hair, and low definition are not controlled. How to improve the surface coating effect of products, stimulate the eyes of consumers, and paint as an important selling point of products to win the market is an important task that must be done.

The steel door is coated with many different processes. The principle of the process design is to select the appropriate paint type and determine the painting operation process and the configuration of related equipment according to the requirements and standards of the steel door products. From the surface effect requirements of steel-wood doors, we can divide them into fully enclosed effects, semi-open effects (including full open effects); at the same time, they can be divided into transparent effects and solid colors.

The paint process is the first factor influencing the pros and cons of steel doors. The selection of the paint process is the most important part of the steel door production process. It is the root of the value of the steel door. There is no suitable process to match the appearance of the wood value. The value of the steel door is not reflected.

If the construction process and quality requirements of the paint are the performance of the cultural and artistic value of the steel door products, then the performance choice of the paint is the specific requirements of the actual function of the steel door products. Therefore, in the choice of steel doors, paint is one of the factors that must be considered, it directly affects the texture, feel, moisture, environmental protection, durability, yellowing and other issues.