No.

Property

Unit

Standard value

Testing value

1

Appearance

The surface of the film shall be smooth and free from bubbles, holes, contaminations and other defects, cutting edge tidy, not damaged.

No visible defects

3

Tensile strength

MD

MPa

≥135

168

TD

≥115

146

4

Elongation at break

MD

%

≥35

75

TD

≥35

91

5

Dielectric strength

20±5ºC/68F

Kv/mm

≥130

185

6

Surface Resistively, at 20ºC±5ºC/68F

Ω

≥1.0×10¹³

≥1.5×10¹⁴

7

Volume resistance, at 20ºC±5ºC/68F

Ω·cm

≥1.0×10¹⁰

≥1.4×10¹⁰