PVB:The sandwich glass mde by PVB has a sound insulation performance about 2db.
Color PVB:In the production process of ordinary PVB,add all kinds of organic colorants,colors are: milky white,blue,dark grey,light green,brown,red and so on,is one of the very good indoor and out-door decoration materials.
PVB with patterns:1.Geometric patterns 2.Computer-printed patterns.
Advantages:High versatility and operability,PVB intermediate film is used in more than 80% of lami-nated glass products in the world at present.
Disadvantages:Sensitive to air vapor,edges of laminated glass need protection,long-term exposed or poorly protected edges may product local degumming.
EVA middle membrane:
In some speical occasions,EVA intermediate membrane can be used.
Advantage:
1.Insensitivity to water vapor in air to avoid side degumming,it can bond with a variety of materials.
Materials.
2.Disavantages:EVA film has low strength,low bonding strength with glass,and some films will turn yellow after long-term use.At present,it is widely used in building interior decoration.
