Item

Property

Unit

Requirement

1

Appearance

-

The single and double sides have uniform rhombus coating, flat , smooth and no impurities

2

Thickness and Tolerance

mm

0.08 ± 0.005

0.13 ±0.007

0.17±0.01

3

Breakdown voltage

in

≥800

≥1100

≥1400

4

tensile strength

MD A

Mpa

≥74

≥80

≥76

CD A

≥36

≥38

≥38

5

Bond strength

Kpa

≥380 double side

6

Width

mm

625 ± 5 960 ± 5 1020 ± 5