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Polyester Film

 
Types & Specifications of Polyester Film:
Type
Thickness and Tolerance (mm)
Inner Core(mm)
Width and Tolerance (mm)
Outer Roll Dia. (mm)
PET
0.04,0.05¡À0.007
¦µ76 ¦µ100 ¦µ120
As User¡¯s requirement
¡Ü500
0.07,0.10 ¡À0.01

Technical Data:
S. No.
Item
Unit
Index
1
Appearance
The surface is smooth and clear, free of any granule, bubble, wrinkle and conducting matters. As for surface dirt (dirt and oil stain), no existence of crystallite spots that exceed the thickness tolerance is allowed. The film edge should be complete and not damaged.
2
Fusing Point
¡æ
¡Ý256
3
Shrinkage Rate is 150¡æ Vertical Horizontal
%
1~3.5
4
Tensile Strength Vertical Horizontal
kgf/mm 2
¡Ý15.0
5
Elongation Vertical Horizontal
%
40~130
6
When Breakdown Strength is 50HZ And 20¡À5¡æ, 130¡À2¡æ
KV/mm
¡Ý130
When Breakdown Voltage is 50HZ And 20¡À5¡æ
KV
0.040
¡Ý4.0
0.050
¡Ý5.0
0.070
¡Ý7.0
0.100
¡Ý10.0
When 130¡æ¡À2¡æ
0.040
¡Ý3.3
0.050
¡Ý4.3
0.070
¡Ý6.0
0.100
¡Ý10.0
7
Volume Resistance Coefficient
20¡À5¡æ
130¡À2¡æ
¦¸¡¤cm


¡Ý1x1016
¡Ý1x1013
8

Dielectric Loss Tangent   
50HZ  
106HZ  


¡Ü0.005
¡Ü0.02
9
    
Dielectric Coefficient          
50HZ 
106HZ  


3.2¡À0.2
3.0¡À0.2

Application:it can be used as moisture- proof layer, insulating layer of communication cable, fiber cable so that the cable core has good dielectric and insulation and improve the cable's mechanical character.
Other specifications can be designed according to your special request.
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