6641 Polyester film/polyester fiber non-woven fabric flexible composite material (F-DMD) consists of two Layersof Polyester Fiber Non-woven Fabric and a single layer of Polyester Film in the center.Characters -Temp.Class F (155C)
No.
Item
Unit
Normal value
1
Nominal thickness and tolerance
mm
0.15
0.18
0.2
0.23
0.25
0.3
0.35
0.4
0.45
2
thickness tolerance
±0.020
±0.025
±0.030
±0.035
±0.040
±0.045
3
Density
g/m2
140±20
190±28
200±30
220±33
260±39
270±40
300±45
325±48
350±52
380±57
425±63
460±69
500±75
560±84
4
Polyester film Nominal thicknesses
μm
50
75
100
125
150
190
250
300
350
5
Tensilestrengt
MD
No bending
N/10mm
≥80
≥120
≥130
≥150
≥180
≥190
≥240
≥270
≥280
≥320
≥330
≥350
≥370
After bending
≥105
≥110
≥170
≥200
≥220
≥250
≥300
≥310
TD
≥70
≥90
≥100
6
Elongation
%
≥15
≥5
≥10
≥3
≥20
≥2
7
Breakdown voltage
kV
≥6
≥7
≥8
≥9
≥12
≥13
≥14
≥16
≥18
≥19
≥21
≥22
8
delamination
-
No delamination, no bubbles or other defects
9
Affected by heat (180℃±2℃, 10min or negotiated by both parties)
No layering, no foaming, no glue flow
10
Stiffness
N
To be determined
11
Long-term heat resistance (temperature index. T1)
≥155