Propertities

Unit

Values

Apperance

Amber, smooth surface, no bubble, pinhole or foreign impurity defects; neat edges, no damage etc.

Density

/

1.42+/-0.02

Thickness

microns

25+/-2.5

Tensile Strength

MD

Mpa

≥ 135

TD

≥ 115

              Elongtation                  MD

%

≥ 40

Shrinkage

150 ℃ 30min

%

≤1.0

400 ℃ 30min

%

≤3.0

Breakdown Strength  (48-62Hz)

MV/m

≥150

Surface Resistivity 200 ℃

Ω

≥10^13

Volume Resistance 200 ℃

Ω.m

≥10^10

Dilectric Constant (48-62Hz)

/

3.5+/-0.4

Loss Tangent (48-62Hz)

/

≤4.0x10^-3

ID 76mm Paper Core , Length 2000m Width 620-630mm