China's steel (aluminum) sheet coating has been developed for many years. After the steel (aluminum) sheet is coated, it needs to be bent, stamped, etc., to produce various shapes to meet the needs of the project. At present, coated steel (aluminum) sheets are widely used in the construction industry, and the dosage is relatively large. They are mainly used for interior and exterior fa?ade decoration and protection, and also for making furniture. Most of the coated steel (aluminum) plates are used indoors and are mainly coated with non-weather resistant PVC films. The coated steel (aluminum) plates are also used in the home appliance industry, the shipbuilding industry and large public construction projects such as bridges, covering PET, PVF, fire-retardant PVC film, etc., which belong to another industry, will not be discussed here.
The laminating process adopted by the large steel (aluminum) sheet laminating plant is different from the coating process we introduced earlier, and the glue used is also different (high temperature is required). The laminating machine in this industry has several important process steps: unwinding-pickling-drying-high temperature gluing-pressing-cooling-winding. The laminating machine can reach a length of 100 meters and the film roll weight can reach A few tons.
The film-coated steel (aluminum) board is processed into a variety of finished products by the decoration company, the curtain wall company or the enterprise producing the outdoor door and the garage door, and is provided to the end user.
According to the principle, outdoor weathering film must be used on outdoor coated metal sheets. However, although some projects have used aluminum sheets or steel sheets coated with outdoor film in recent years, the usage is not very large. On the one hand, the film is mainly concentrated in the field of pattern decoration. In the case of monochromatic film, it is easy to be replaced by spraying; on the other hand, the aluminum plate or steel plate coated with the outdoor film has a high cost, is not easily accepted by the project, and is easily replaced by transfer; There is a problem that it is easy to encounter the outdoor film in the laminating process, such as the outdoor film is bright at high temperatures, and white marks appear at low temperatures. Therefore, if the outdoor weathering film is to be promoted in the metal sheet industry, it will change from the film coating process to the performance and cost of the film itself.
There are also manufacturers using aluminum-plastic composite film on the market, but compared with aluminum and steel plates, the market for coated aluminum-plastic composite panels is relatively small. Individual manufacturers with flat-panel machines can also make aluminum-plastic composite panels (including aluminum and steel sheets). ), but most of the manufacturers are making indoor sheet coating process in the furniture industry. It is difficult to meet the outdoor standard requirements for the peeling strength of the outdoor sheet, but the products made by the manufacturer using the PUR flat machine will be better.
In addition to the traditional application fields, outdoor coated metal decorative plates can also expand business in the fields of marble facades, roofs, eaves, outdoor flower stands, fences, fences, decorative louvers, etc., but the more application areas, the required process technology The more complex, this requires a professional decoration company to achieve.
Application of outdoor film on non-metallic decorative panels:
At present, the use of laminated decorative panels for interior decoration is relatively common, especially in the wood-plastic industry. The development has been in full swing. Now it has been developed to decorate the whole house with wood-plastic decorative panels, while other materials are omitted, based on the rough house. Can be directly constructed. The decorative panels used outdoors are still relatively small, and they are in the initial stage. Several large wood-plastic manufacturers are carrying out preliminary promotion work.
At present, there are few projects using non-metallic decorative panels on the fa?ade of the market, and there are not many large-scale engineering projects. Non-metallic decorative panels are used outdoors to consider strength, weather resistance, and workability, although some manufacturers have also done Some samples, but the amount used is not large. However, with the development of the industry and technological innovation, the application methods and fields of outdoor coated sheets (metal and non-metal) will be more extensive, and the amount of use will gradually increase.