Specifications

Items

0.76mm

Appearance

Appearance

The color band should be evenly distributed and so as the width of transitional region.

Crystallite and watermarks

The crystalliteDiameter more than 2.0mm not allowed, and the watermarks not visible

Visible defects (impurities, bubbles, oil, drop etc.)

In 200m The diameter of the defects more than0.5mm must be less than 6 places

Diameter more than 0.5mm for defect must be marked on film; densely existed defects* more than diameter of 0.5mm must be noted as one defects more than 0.5mm. The kinds and places should be mentioned in the packing list.

Thickness and size

Thickness tolerance(mm)

±0.04mm

Uniformity ratio

Landscape or portrait thickness tolerance must less than15 μ m in a distance of 25mm; must less than 25 μ m in 50mm, and must less than 50 μ m in 100mm.

Length (m)

longer than normal length

Width (mm)

wider than normal length

Roughness Rz

15-70

Moisture content (%)

0.35~0.55

Heat shrinkage rate (60°C/15min)(%)

less than 8.0

Striking rate

3~7

Light transmittance (%)

more than  85

Haze (%)

less than  0.4

Tensile strength (MPa )

bigger than 20.0

Breaking elongation (% )

more than  200

Yellowness index (%)

less than 10

*:Densely existed defects refers to the defects should bemore than 10 in the circular of 300mm diameter, and the separation distance of the defects should be less than 5mm.