Paint knowledge: wood door paint technology and their advantages and disadvantages

Core tip: China paint network news: there are many different processes for wooden door coating The principle of process design is to select appropriate coating varieties according to customers' requirements and standards for wooden door products, and determine the coating process and related equipment configuration In terms of the surface effect requirements of wood door products, we can divide them into full closed effect and half open effect (including full open effect); at the same time, they can also be divided into transparent effect and solid color effect In the market, we can see the vast majority of wooden door products, the coating effect of its surface is completely closed, transparent and colored effect, and the coating products used Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Paint Home News: China paint network news: there are many different processes for wooden door coating The principle of process design is to select appropriate paint varieties according to customers' requirements and standards for wooden door products, and determine the coating process and related equipment configuration In terms of the surface effect requirements of wood door products, we can divide them into full closed effect and half open effect (including full open effect); at the same time, they can also be divided into transparent effect and solid color effect In the market, we can see that most of the wood door products, the coating effect of the surface is completely closed, transparent and colored, and the main type of coating used is PU paint In this paper, we will introduce the technology and analyze the advantages and disadvantages of each technology with PU as the coating The above basic process is suitable for the paint coating operation of most wood door enterprises However, each factory has made some adjustments based on the above process and derived many different process flows according to the different product positioning and materials used by each enterprise In this paper, we will focus on introducing various derivative process flows to you One: one bottom and one side 1 Process flow: blank grinding → wiping ash → grinding → spraying transparent primer → grinding → spraying colored transparent surface 2 Product positioning: low grade products 3 Advantages: the process is the simplest, and the coating cost is the lowest When the wood blank has obvious defects, the wood color water ash is used for filling, and the color transparent surface is painted with a darker color, which can better cover the defects of the substrate Uniform color 4 Disadvantages: the product has no permeability and can not see the natural texture beauty of wood The whole coating effect is similar to the solid color paint effect on MDF Because only one primer has been made, the filling property of the product is not good, the anti sinking property is not good, and the surface film of the product is prone to wave like undulation, which greatly affects the overall aesthetic feeling of the product Water ash grinding is the most time-consuming, labor-intensive, dust, resulting in grinding workers difficult to hire Two: two bottom and one side (including water cement type) 1 Process flow: blank grinding → wiping ash → grinding → spraying transparent primer → grinding → spraying transparent primer → grinding → spraying colored transparent surface 2 Product positioning: medium and low grade 3 Advantages: the process is relatively simple, and the coating cost is low Compared with the previous process, it has better filling property and anti sinking property 4 Disadvantages: the permeability of the product is not very good, the sense of hierarchy is not strong, and the natural texture and aesthetic feeling of wood cannot be well displayed The grinding strength of water ash is large, and the dust is large 5 Suggestions: (1) change the wood color water ash to "colored water ash"; (2) change the spraying of colored transparent top coat to use color repairing essential oil for color repairing, light grinding, and then spraying transparent top coat This will greatly improve the product's permeability and sense of hierarchy, so that the wood texture can be more clearly displayed, and the overall cost will not increase much Third: three bottoms and one side 1 Process flow: blank grinding → transparent primer spraying → grinding → transparent primer spraying → grinding → transparent primer spraying → grinding → color trimming → light grinding → finishing coat spraying 2 Product positioning: medium and high grade products 3 Advantages: good permeability, can clearly show the natural texture of wood The water ash construction is omitted and the grinding strength is reduced 4 Disadvantages: high cost, process has not been simplified, if it is the material of deep wood hole, three times of primer can not do a good fullness If the wood texture of the material is thin, it can not enhance the effect of the wood texture (only the real performance) 5 Suggestions: (1) if the wood hole of the material is deep, the second primer can be wet touched; (2) the second primer can also be changed from spraying to scraping, which not only greatly saves cost, but also gets better coating effect Fourth: bottom coloring and surface finishing 1 Process flow: blank grinding → spray sealing and fixing the bottom → grinding → Pu Grice wiping → transparent primer spraying → grinding → transparent primer spraying → grinding → transparent primer spraying → grinding → polishing → color trimming → light grinding → finishing coat spraying 2 Product positioning: high grade products 3 Advantages: it has very good permeability and layer sense (stereo sense) Even if the texture of the wood itself is not clear enough, the texture can be displayed more clearly through the above process operation 4 Disadvantages: high cost, long operation time 5 Suggestions: (1) if the texture of the wood is very clear and aesthetic, it is not necessary to use the bottom coloring (for example, the wood skin of sabili, which is directly used as the transparent primer, the wood eye itself will produce a bright red effect, which is very beautiful; but if the bottom coloring process is done, it will not show this effect); (2) After using the process of bottom coloring, the color of surface finishing can be lighter, so that the sense of hierarchy and permeability are better Through the above process introduction and analysis, we can see that each process has its applicability, advantages and disadvantages Therefore, when we choose the process, we must consider the actual needs and conditions to choose the appropriate process, otherwise it is difficult to achieve their own ideal results, sometimes it costs more, and can not do the desired results and quality Today, the wood door manufacturing industry is more and more prosperous, which means the industry competition is more and more fierce, and the overall trend of the profit margin of wood door manufacturing and sales is lower and lower How to control the cost, improve the quality and improve the production efficiency to the greatest extent is a task for every employee Does improving quality mean increasing cost? Superficially, yes But it's not Some people say that I want the effect of the process of "bottom coloring and surface finishing", but I want to simplify the process and reduce the cost In fact, it can be done Some factories have been using new materials to replace the water ash used before, so that it not only has a good filling, construction, but also to the end of the coloring effect The use of new materials can optimize the process, reduce costs and improve efficiency At the beginning of coating application, people mostly use the brush coating method, and later use the spray method, which greatly improves the production efficiency and quality But people have neglected that there are many methods of coating Some factories choose the scraping method, which not only greatly saves cost, improves efficiency, but also produces better results Therefore, as a science, coating, like all other fields of science, has endless exploration It is always improving and developing Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,