Appearance Requirements |
Appearance |
Colorless film, no impurity, high transparency, smooth surface, uniform thickness, moderate roughness, soft feel, no wrinkle, no scratch and crease. |
Dot-like particles and bubbles |
≤0.05mm 2 |
Allowed to scatter, less than 10 points every roll |
>0.05mm 2 |
Less than 4 points every 100 meters |
Remark, each add 1 meter |
Geometry |
Thickness (mm) |
0.38±0.02 |
0.50±0.02 |
0.76±0.02 |
Uniformity |
Thickness deviation less than 40μm every 100 meters in length and breadth |
Thickness deviationless than 40μm every 100 meters in length and breadth |
Thickness deviation less than 50μm every 100 meters in length and breadth |
Length Tolerance (mm) |
No less than remarked length |
Width Tolerance (mm) |
No less than remarked width |
Water Absorption(%) |
<0.1 |
Tensile Strength (mpa) |
≥15 |
≥200 |
Haze (%) |
≤0.23 |
≤0.18 |
≤0.18 |
Heat & Humidity Resistance |
GB-15763.3-2009 |
No water penetration, bubbles&de-lamination |
Impact Resistance Against Shot-bag |
GB-15763.3-2009 |
Qualified |
Ball Impact Resistance |
GB-15763.3-2009 |
Qualified |