"Awkward" finishing material A very important process in furniture manufacturing is spraying, which not only affects the health of the staff but also the health of the end customers. Over the years, many companies and research institutes have also been coating of environmental protection effort to modification, whether "oily coating" or "coating" how changes in recognition in the field of furniture and solvent paint, water-based paint is still the mainstream. But with the deepening of the research, a powder coating is starting to get the attention of furniture industry, from the original metal furniture to non-metallic base material furniture industry began to try to use powder coating now, and do experiments on MDF (medium density fiberboard), published in March 2016 in the coating technology and the abstract of a paper entitled "the MDF powder coating technology, the technical difficulties and process of MDF powder coating process has made the detailed discussion and analysis. MDF powder coating is a high - tech high - tech market. What is powder coating? It's already in use Powder coating, that is, under the action of electrostatic field, the charged particles through high pressure spray gun spray directly onto after preheating of medium density fiberboard (MDF), under the action of static electricity, will bring some spray powder particles evenly over the surface of the workpiece, after heating melting and solidification forming uniform flow leveling and superior physical and chemical properties of the coating. Actually electrostatic spraying technology was born as early as the late 1960 s, and is widely used in ship, automobile and other metal products surface coating, the reason is that the metal has good electrical conductivity to the spray gun and products produced by Yin and Yang electrode connected between the stable electric field. Later metal furniture industry began to use powder spraying process. By the late 1990s, the development of spraying equipment and spraying materials that could be used with non-metallic materials was developed and developed rapidly in the field of office furniture. Where are the advantages of powder coatings? Compared with mainstream solvent coatings and waterborne coatings, powder coatings have obvious advantages in both performance and construction. (1) green environment and low consumption Solvent-based coating volatile organic matter pollution in use process and construction personnel as well as the health of the consumer, and powder coating the whole do not use any solvents, VOC zero release, water-based paint though than oily paint environmental protection, but its 70% water, including organic solvent in baking process with water evaporates, processes improper, will release the VOC, impact on the environment. In addition, the surplus powder in powder coating can be recycled and reused, with an utilization rate of 98%. This outstanding advantage is the traditional solvent coating cannot compare shoulder, also accord with current environmental protection policy and consumption, manufacturing idea. (2) excellent physical and chemical properties of paint film The furniture, which is finished by powder coating, indicates that the paint film is flat and strong, which is not inferior to the paint film of the solvent coating. (3) high construction efficiency and labor cost Compared with solvent paint construction, powder coating saves grinding and scraping putty, primer, furniture knows, spraying workshop process complex, and the improper site layout will cause further lower efficiency. Powder spraying can realize the high automation of the spraying process. The research shows that the spraying production line of an office furniture company in south China requires only four employees, which can be sprayed and solidified in 20 minutes. The development of powder coatings is promising According to the research data of the paint decoration committee of China chemical society, the sales volume of thermosetting powder coatings in China was 1.25 million tons by 2015, up 7.5% from the previous year, which exceeded the total growth rate of China's coatings. According to the distribution prediction of powder coating, the development of powder coating in the central and western regions of the bohai region is expected to be significant. The rapid development of the powder industry indicates the characteristics of the material and also brings about various benefits. (1) the powder coating industry is undergoing transformation and integration According to incomplete statistics, China's large and small powder coating factory has more than 4000, its main products are the general industry powder coating, the main competition mode is price war. Such market situation is not conducive to the development of powder coating itself, nor to the development of the downstream furniture industry. Fortunately, the transformation has become the consensus of the industry, and the integration and upgrading is happening quietly. The pain of market shuffle is inevitable, but in the long-term strategic view, this is good for the powder coating industry, which will improve the quality of products and the variety of products. (2) breakthroughs in new application areas With the variety of powder coatings, the application types are broadening. Especially the powder coating applied to furniture industry, such as MDF board furniture USES powder coating process, two furniture enterprises in guangdong province have been the pioneer of powder spraying in MDF office furniture. With the development of technology, solving the problems such as poor conduction and high temperature in the powder spraying process of MDF, the prospect of powder spraying in the furniture field is considerable. (3) the policy expedited the process of "painting the powder" In recent years, the state has stepped up its political environment, and many bills have been shown to show the government's determination and opportunities for the industry. In February 2015, the coating was formally levied on the consumption tax. In July 2015, the product was banned from sale in shenzhen, and on October 1, 2015, the ministry of environmental protection encouraged the use of low-voc coatings. In April 2017, the central government set up an environmental supervision team, and the supervision and inspection of air pollution in the beijing-tianjin-hebei region and surrounding areas has been intensified for three months. During the period, more than 30,000 enterprises (units) were inspected by 28 inspection teams. Over 20,000 of them had environmental problems, and the problem rate was over 60%. At present, large liquid coatings companies are preparing to transition to powder coatings. Conclusion: time and reform and innovation is to promote China's manufacturing industry to manufacture powers on the determination of the embodiment, the state council issued "China's manufacturing industry development compendium (2015 ~ 2025)" has been clear about the nation's will. Furniture as a traditional industry, but also has been a rapid growth of nearly 30 years, now how can comply with the national environmental protection policies, to meet the increasing health demand, choose what kind of spraying process to complete the above requirements, is the furniture industry are exploring road.