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6640 NMN Polyester Film/ Polyaramid Fiber Paper Flexible Composite Material

Product Description

 6640 (NMN) paper/Polyester film/ paper is made of two layers of Du Pont paper with one of polyester film. heat-resistant grade F grade. Has good flexibility, excellent mechanical strength, dielectric properties anti-tear strength and absorption capacity of paint.

Characteristics and application: Temperature classification is F. Good cutting and overload resistance as well as compatibility with common varnish. Used as the slot insulation between phases for motors and apparatus.

6640(NMN) Technical Characteristics

No Item Unit Normal Value
1 Nominal thickness mm 0.15 0.18 0.20 0.23 0.25 0.30 0.35
2 Thickness tolerance mm ±0.02 ±0.03 ±0.04
3 Weight g/㎡ 180±25 210±30 240±30 260±35 300±40 350±50 430±50
4 Tensile
strength
lengthwise Normal N/10mm ≥150 ≥160 ≥180 ≥200 ≥220 ≥270 ≥320
bended ≥80 ≥110 ≥130 ≥150 ≥180 ≥200 ≥250
crosswise Normal ≥90 ≥110 ≥130 ≥150 ≥180 ≥200 ≥250
bended ≥70 ≥90 ≥110 ≥130 ≥150 ≥170 ≥200
5 lengthwise % ≥10 ≥12
crosswise ≥15 ≥18
6 Breakdown voltage Normal   KV ≥7 ≥10 ≥11 ≥12 ≥13 ≥15 ≥20
After bending ≥6 ≥8 ≥9 ≥10 ≥12 ≥13 ≥16
7 Bonding strength at room temperature No delaminating
8 10min
Bonding strength at (180±2) ℃ for 10min
   — No delaminating, blister and gummosis
Remarks: The width of product is general 900mm and the storage life is 12 months. We can cut and supply the tapes according to the requirements of the customers
Categories: New