Properties

Units

Values

Nominal thicknesses

mm

0.14

0.15

0.17

0.19

0.22

0.24

0.26

0.31

0.37

0.41

0.47

Thickness tolerances

mm

±0.021

±0.022

±0.022

±0.022

±0.022

±0.024

±0.026

±0.031

±0.037

±0.041

±0.047

Density

g/m²

140±17

150±18

170±20

200±24

230±27

270±32

305±36

360±43

450±54

515±61

590±70

Polyester film Nominal thicknesses

μm

23

36

50

75

100

125

150

188

250

300

350

Tensile

strength (No bending)

MD

N/10mm

≥100

≥150

≥150

≥170

≥190

≥220

≥240

≥270

≥330

≥370

≥400

TD

N/10mm

≥80

≥90

≥90

≥105

≥120

≥150

≥180

≥200

≥300

≥330

≥350

Tensile

strength (after bending)

MD

N/10mm

≥80

≥80

≥90

≥100

≥110

≥130

≥170

≥200

≥250

≥300

≥300

TD

N/10mm

≥50

≥70

≥70

≥90

≥100

≥120

≥150

≥150

≥200

≥230

≥250

Elongation

MD

%

≥15

≥20

TD

%

≥20

≥25

Breakdown voltage

(no bending)

KV

≥6.0

≥7.0

≥8.0

≥11.0

≥12.0

≥14.0

≥16.0

≥19.0

≥23.0

≥25.0

≥28.0

Breakdown voltage (after bending)）

KV

≥5.0

≥6.0

≥7.0

≥9.0

≥10.0

≥12.0

≥14.0

≥15.0

≥18.0

≥19.0

≥20.0

Stratification

—

No delamination, no bubbles or other defects

Affected by heat (180℃±2℃, 10min or negotiated by both parties)

—

No layering, no foaming, no glue flow

Stiffness

N

To be determined

Long-term heat resistance (temperature index. T1)

－

≥155