WHY WE PREFER EVA FILM TO DO LAMINATE SMARTGLASS INSTEAD OF PVB FILM

If PVB is used to do laminate smartglass, the preferred project requires a black frame similar to the edge of automobile glass) Frameless glass office partition projects are generally not applicable. 

Whether it is PVB or EVA, when making laminated smartglass, it is a high-temperature and high-pressure chemical reaction process; because only chemical reactions can make the glue completely bonded; 

EVA in the early years was a physical adhesive that evolved into today's chemical Adhesive; EVA film is a random copolymer of vinyl acetate. After reaching the temperature release point, a polyoxygen reaction will occur. The polyoxygen reaction is an acid reaction, which will bond better and produce different effects, transparency, or other effects at different temperature ranges.

PVB is a plasticized film based on PVB, similar to a sandwich structure, a sandwich film; PVB is a multi-layer film, with polyethylene on both sides and butyral in the middle. Butyral contains plasticizers and is produced by the dimming film polymer. After the plasticizing reaction, the edge will be 1 inch more transparent. In fact, all dimming films can use PVB, but the acceptance of it will not be very high for glass projects without borders.