PVB is made from PVB resin and plasticizer .It is a non-toxic and smell-free soft sheet material with thickness between 0.2mm-2mm, the best material for the interlayer of safety glass as its wonderful product property such as anti-penetration, anti-ultraviolet, sound proof etc

Technology & product size
1. Item\Classification: 0.38mm / 0.76mm / 1.52mm
2. Thicknesses (mm): 0.38í+0.02 / 0.76í+0.04 / 1.52í+0.08
3. Length tolerance (m): 0-5 / 0-2 / 0-1
4. Width tolerance (mm): 0-10
5. Uniformity:
Horizontal thickness warp shouldnt exceed 15 um at a distance of 25mm;
Horizontal thickness warp shouldnt exceed 20 um at a distance of 50mm;
6. Appearances: Achromatic or slightly yellow lucid film, with velvet surface that has no scar or crease
7. Dotted waste sundries and air bubbles:
í_0.05mm2: Allowed if exist separately, but not exceeding 10 places per film
ú+0.05mm2: Not exceeding 8 places per film. / Making marks. Define an extended 0.5 meter film per place. Add one extra meter per place
8. Moisture content (%): 0.4-0.6
9. Extending intension (Mpa):í¦20.0
10.Rupture extending rate (%):í¦200
11.Surface roughness Rz (ª-c=2.5mm ): 15-45
12.Fog rate (%) :ú+0.4
13.Shrinking rate (60íµ/15min) (%):í_12%
14.Whacking value:ú+5

Every Layer of the PVB film is separated by PE film, and then vacuumed by aluminum foil. Each rolls packaged in fumigated wooden case.