The rooted orientation of the wooden door painting process is very important
Paint as a set door, the post-process of the wooden door factory processing, its pros and cons 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 (PE 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, and a large amount of nitrocellulose paint, polyester paint and PU paint are used.
Due to the simple construction and suitable for manual operation, the nitrocellulose lacquer is used by most hand-decorated woods, so the paint film is thin, the hand feel is not good, and the effect is not satisfactory. The advantage of PU paint is that it is easy to be sanded, and the processing process saves time and effort. The disadvantage is that the paint film is soft, and the slight bump is easy to produce white shadow dents. If at least one layer of PE paint is in the paint layer, this possibility is greatly reduced. The advantage of PE paint (polyester paint) is that the paint film is hard, the hiding power is strong, the transparency is good, and the veneer texture can be better expressed. The disadvantage is that it is difficult to polish, and the processing process is time-consuming and laborious. Most manufacturers are not willing to use PE coating.
The choice of wood door paint and its processing directly affect the texture, feel, moisture, environmental protection, durability, yellowing and other issues. Generally used is polyester paint, which has good filling property, thick paint film, soft hand feeling, high hardness and good solvent resistance. However, the setting of polyester paint is inconvenient and affected by time. The adjusted paint must be used up within 4 hours, and the construction environment is very demanding.
On the basis of the same production process, the better the quality of the selected paint, the better the performance of the paint film. For example, under the same sunshine conditions, the bright yellow white paint with good yellowing resistance is better than the ordinary white top paint; under the same paint film appearance, the wear resistance and scratch resistance of the wear resistant matt paint It is much better than ordinary matt paint.
Under normal circumstances, the surface of the wooden door with good paint treatment is smooth and bright, so everyone should pay attention to whether the wooden door paint surface looks full, the color is uniform, and the saturation is good. When touching the paint surface with your hand, you can use the nail to lightly paint the paint on the hidden part of the door to test the hardness of the paint film. It is anti-wear and scratch-resistant. A good scratch of the paint film will not scratch.
Today, the growing popularity of wooden door manufacturing industry means that the competition in the industry is becoming more and more fierce. The overall trend of profit margins for wooden door manufacturing and sales is getting lower and lower. How to control costs, improve quality and improve production efficiency is the subject of every practitioner. Does improving quality mean increasing costs? The appearance is, but it is not.
Some people say that I want the effect of the "bottom coloring, face repairing" process, but I want the process to be more simplified and lower cost. In fact, it can be done. Some factories have already used new materials to replace the previously used water ash, so that it not only has good filling, construction, but also can achieve the effect of bottom coloring. The use of new materials can optimize processes, reduce costs and increase efficiency.
When the coating was just applied, most people used the brushing method, and later changed to the spraying method, which greatly improved the production efficiency and quality. However, people have neglected that there are many ways to paint. Some factories use the method of scraping, which not only saves the cost, improves the efficiency, but also makes the effect better.
Therefore, painting as a science, like all other scientific fields, has endless exploration. It is constantly improving and developing.
In the following content, we will introduce in detail the application of light curing paint (UV) in wooden door painting. Its high efficiency, low cost and stable quality have the advantage that the conventional PU coating process can't match.
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