Kraft Paper

Index item

unit

demand

1.thickness tolerance(max.)

％

±10

2.density

g/cm3

1.0-1.2

3.tensile strength(mix.)longitudinal

Mpa

80

4. tensile strength(mix.)traverse

Mpa

40

5. tensile strength(mix.) traverse after folding

Mpa

A　B　
35　40

6. tensile strength(mix.) longitudinal after folding

Mpa

60

7.moisture content(max.)

％

8

8.ash content(max.)

％

1

9.electric break town strength(mix.)

A　B

In oil　0.1.mm

9　9

　　　0.15-0.25mm

KV/mm

10　10

　　　0.30-0.35mm

10　 -

　　　0.40-0.50mm

9　-

10. electric break town strength(mix.)

In are after folding

A　B

　　　0.10-0.15mm

KV/mm

7　7

　　　0.20-0.25mm

8　8

　　　0.30mm

8　-

　　　0.30-0.50mm

7　-

11. electricity conductivity(max.)

8

12.PH of water extractives

Ms/m

6-9