automotive PVB film for auto windshield

PVB films are primarily applied in laminated glass that is a construction of two or more pieces of glass. The advantages of PVB films:

Due to high tenacity and adhesion of PVB films, the films can endure external impact and are hard to penetrate through. Although the glass might be broken, it reduces the damage level dramatically since the glass fragment will not scattered around.

Automotive PVB film paraments:

Roughness RZ,µm:15-70

Moisture content(%):0.35-0.55

Heat shrinkage rate(%):<=8.0

Pummel value,rank: 3~7

Visible light transmittance(%): >=80

Haze(%): <=0.4

Tensile strength(MPa): >=20

Tensile elongation(%): >=200

Yellowness index(%): <=10

Packaging and storage condition

Every layer of PVB film rolls should be sepatared by PE film and vacuumed by aluminum foil,and put into wooden case.

The product should be stocked in a clean warehouse and normal temperature.It is prohibited to leave it under direct sunlight.Once the packing is broken or opened,it should be stocked under temperature of 15-25 ℃ and a relative humidity of 20%-40%.

Well-packed and under nomal temperature,the product has a quality guarantee of 1 years.