Laminating glass with EVA (Ethylene Vinyl Acetate) film and PVB (Polyvinyl Butyral) film involves different processes due to the properties and characteristics of these two materials.
Laminating glass with EVA film is a simpler process than laminating with PVB film. The process can be done in a simple oven, making it less costly to install. The EVA film is placed on the bottom glass, and another glass is put on top of the EVA film. The two glasses are then sealed together using high-temperature-resistance tape.The EVA film has good fluidity, which makes it suitable for winding, entrainment, and other operations in the film. It also makes patterns and can be used to create rich decorative glass materials. However, EVA film has good water resistance but is resistant to UV and can easily yellow and age in sunlight. In contrast to the simpler process of laminating with EVA film, laminating with PVB film requires a more complex process. PVB film needs to be processed in an autoclave, where the pressure applied to the lamination structures helps to improve the limited adhesiveness properties of PVB. PVB film has high transparency, cold resistance, impact resistance, and resistance to ultraviolet radiation. It is the most widely used laminated material for building glass and automobile glass at present. The main differences between laminating glass with EVA film and PVB film lie in the processing requirements, the properties of the films, and the types of glass that are suitable for each process.
In conclusion, the choice between laminating glass with EVA film or PVB film depends on the specific requirements of the project, including the types of glass to be used, the desired properties of the laminated glass, and the available resources for processing the glass.