Do you know about PVC blister film?

What are the characteristics of PVC blister film and what effect does it have after use? I believe many people have heard of it when buying furniture, cabinets, etc., but they don't know the details. Let us understand it in detail today. Give it a try. The principle of PVC blister film: The PVC film is close to the MDF after spraying during the heating and softening process, and the air between the PVC film and the MDF film is sucked out by vacuum, and the PVC film is tightly pasted by atmospheric pressure. On MDF, this process is called vacuum lamination. Features of PVC blister film: The adhesive used for vacuum blister film is vacuum blister, which is mainly water-based polyurethane adhesive and mixed with other resins. In principle, hot melt adhesives and solvent-based adhesives can also be used, but water-based adhesives are non-toxic, odorless, moderately priced, and suitable for mechanized operation. The biggest feature of this process is that it does not need to be sprayed with paint or paint, it is a paint-free process. In addition, it can also cover concave-convex grooves, curved edges, and hollow carvings, which is unmatched by other processes. Application of PVC blister film: The vacuum blister film process is widely used in the manufacture of computer desks, speaker panels, cabinets, doors and furniture, and is widely used in the processing and manufacture of automotive interior parts. The vacuum forming process has developed rapidly. 45% of the MDF in Japan is covered with vacuum plastic; the medium density fiberboard processed by PVC in my country has reached 30 million m2, and it is increasing at a rate of more than 8% every year. The performance requirements of vacuum suction plastic: The vacuum suction plastic adopts spray sizing, so the viscosity of the vacuum suction plastic adhesive is required to be moderate, which can adapt to the changes of winter and summer weather, and can realize spray atomization. In addition, the vacuum suction plastic must have the following characteristics: (1 ) Good flowability, and the surface is clean and free of pitting after blistering. (2) High solid content and quick drying. (3) The initial viscosity is good, and the initial viscosity of the suction plastic is particularly required at the grooves and edges. (4) Good heat aging resistance, at least at 60°C, the film does not curl, shrink or blister after 24 hours of baking. (5) The activation temperature is low. The use of water-based polyurethane adhesive must have an activation temperature. The activation temperature is required to be in the range of 55 to 65 °C. If the temperature is too high, the PVC film is easy to perforate. The above are the characteristics of PVC blister film. If you want to know more, you can pay attention to us.

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