The new surface coating of door finishing greatly affects the wooden door grade as the Chinese wooden door industry in the growing stage. At present, it cannot fully meet the needs of the market in terms of quantity and variety. The choice of wooden doors is the face project of each family, representing a way of life and a manifestation of being kind to yourself. With the continuous development of China's national economy, the quality of life of ordinary people is increasing day by day, and the quality requirements for life are getting higher and higher, which will inevitably bring huge business opportunities to the wooden door industry. How to guide the market consumption, provide environmentally friendly, beautiful, value-for-money products to the vast number of consumers, is the subject that every enterprise should face. It can be predicted that the market will have higher and higher requirements for the comprehensive quality of wooden doors, and the requirements for wooden door painting will be higher and higher.
According to the survey, some wooden door enterprises still have a lot of 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 wooden 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.
At present, most wooden door enterprises use polyester coatings (also known as PU coatings) as the preferred material for primer coating and topcoating. This is a relatively mature lacquering process that has been recognized by enterprises and the market. From the perspective of the lacquering process of the furniture industry, the use of PE-based polyester primers will have more advantages. The product has a high solid content and good fullness, and a high-thickness coating can be obtained in one coat. It has fast drying, high hardness, good sanding and less oozing. Its high quality, low consumption, time saving, low pollution, and excellent overall performance are unmatched by general PU primer. The use of PE primers and PU topcoats has been widely used in the coating of wood products for furniture companies. It is not too much for wooden doors companies to use this combination.
Most of the wood door factories now use PU transparent primer. PU coating is indeed a kind of paint with good comprehensive performance, and the construction is also convenient. However, if you want to produce more demanding wooden door products, we suggest that PE transparent primer can be used as the bottom. Under the same process, the surface coating effect and stability of the product are much better than those used now. PU transparent primer. This is based on some of the irreplaceable performance of PE paints.
PE paints have a very high hardness of up to 5H, while the highest hardness is only 2H compared to PU paints, usually only 1H. It can be seen that the difference in hardness between the two is quite large. Naturally, PE paint is much stronger than PU paint in terms of sag resistance due to its high hardness. At the same time, PE paint is a kind of high-solid paint, the solid content can reach more than 90%, and the solid content of PU is less than half. That is to say, in the case of the same amount of spraying, the film formation of PE paint is much higher than that of PU paint.
Due to the cost (nitrocellulose lacquer 8-15 yuan / kg, polyester paint 18-28 yuan / kg, PU paint 43--65 yuan / kg), processing methods and equipment problems, the current 90 sets of wooden doors on the market use poly Grease paint, 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, paint is one of the factors that must be considered when choosing a wooden door. It directly affects the texture, feel, moisture, environmental protection, durability, and yellowing resistance.
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