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Technical data for polyester film
No. Item  Property Unit Value
1 Thickness   Nominal thickness ( μm ) % 0.23
tolerance 25 - 100 ≤±5
> 100 ≤±4
2 Tensile strength   Nominal thickness ( μm ) Mpa -
( lengthwise & crosswise) 25 - 100 ≥150
> 100 - 190 ≥140
> 190 ≥110
3 Break elongation    Nominal thickness ( μm ) % -
( lengthwise & crosswise ) 25 - 50 ≥60
> 50 ≥80
4 Heat shrinkage   Nominal thickness ( μm )   -
( lengthwise & crosswise ) 25 - 50 % ≤3
> 50 ≤2
6020SL     lengthwise ≤1.0
150°C 30min crosswise ≤0.5
5  Dielectric strength   Nominal thickness ( μm ) V/μm -
25 ≥174
36 ≥150
50 ≥130
75 ≥105
100 ≥90
125 ≥75
150 ≥70
188 ≥65
250 ≥60
300 ≥55
350 ≥50
 
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