Paint is used as the post-process of the package 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 wooden 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 middle 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. Due to the simple construction and suitable for manual operation, the nitrocellulose lacquer is used by most hand-decorated woods, but its paint film is thin, the hand feel is not good, and the effect is not satisfactory. Polyester paint is relatively thick, but its thinner contains helium when it is volatilized, and the film hardness is slightly weaker. The most ideal is PU paint. PU paint not only has the thick paint film of polyester paint, but also has strong adhesion and good transparent layer. At the same time, its good sealing property also plays an important role in the moisture-proof of wood. Hardness, durability, yellowing resistance and environmental friendliness are unmatched by other paints. Due to the cost (nitrocellulose lacquer about 8.15 yuan / kg, polyester paint about 18. 28 yuan / kg, PU paint about 43--65 yuan / kg), processing methods and equipment, currently 90% of the market The wooden door is made of 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. Opellong door industry uses PU paint and multiple paint processes. 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. [Follow the WeChat public number "Jiuzhengmen Window Network" to view the latest hot article "This year's doors and windows are not good, stand around the factory to see ..." More industry exchanges, please join the Jiuzhengmen window network exchange group]
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