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BOPP clear rough film for capacitors
Features:
Impulse a deep-rough treatment into single side or double sides on the surface of the film in order  to form some certain concave ,then let the film be characteristic even roughness ,low dielectric loss, and high dielectric strength and good compatibility with kinds of Dipping Oil but with small Swelling.
Mainly used for Baptist paper composite membrane oil medium or total capacitor dielectric film Baptist Oil: such as high-voltage capacitor and capacitor for electric induction heating system,etc.
Specification:
Thickness: 6UM—15UM
■ Technical Characteristics(typical value)
Unit
Typical Values
Test conditions
Tensile strengh
TD
Mpa
140
Stretching speed 100mm/min @23℃,50%r.h.
TD
Mpa
200
Elongation at break
MD
%
150
TD
%
50
Thermal shrinkage
MD
%
3.5
15 min @ 120℃
TD
%
1.5
Space factor
Average
%
9.0(6~9μm)
10.0(10~18μm)
23℃
Limited
%
Max15
Min6
Surface roughness
μm
0.25—0.65
23℃
BDV X(DC)
V/μm
520
at 23℃air
Relative permittivity
2.2
50Hz or 1kHz @23℃
Volume resistivity
Ω.m
5.0×1015
23℃
Dielectric dissipation factor(tan delta)
2×10-4
50Hz or 1kHz @23℃
■ Dimensions & specifications:
Thickness
MMV
μm
6
8
9
10
11
12
13
14
15
18
WMV
μm
5.5
7.4
8.3
9.2
10.2
11.0
11.9
12.8
13.7
16.5
Tolerance
Average
%
±3
Individual
%
±9
±7
±5
Final film roll width
mm
40~700 or to slit according to customers' reguest
Inner diameter
mm
76.2 ,  152.4
Note:nusual specifications can be negotiated and specified additionally

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