The used adhesive is F-Class and acid-free and temperature resistant.
6641 F-DMD shows excellent electric insulating properties, heat resistance, mechanical strength and impregnated properties. It enables easy processing on automatic machines. It can be used in insulating slots, gaskets for electric machinery and interlayer insulation in transformers. Heat resistance is Class F. Special thickness and combinations can be supplied according to customer.
NO. | Technical Specification | Unit | Value | ||||||||||
1 | Thickness | mm | 0.15 | 0.18 | 0.2 | 0.23 | 0.25 | 0.30 | 0.35 | 0.40 | 0.45 | ||
2 | Thickness Tolerance | mm | ±0.02 | ±0.025 | ±0.03 | ±0.03 | ±0.03 | ±0.03 | ±0.035 | ±0.040 | ±0.045 | ||
3 | Nominal Grammage and Tolerance | g/m*m | 140±20 | 190±28 | 220±33 | 260±39 | 300±45 | 350±52 | 425±63 | 500±75 | 560±84 | ||
4 | Thickness of polyester film | mm | 0.05 | 0.075 | 0.10 | 0.125 | 0.15 | 0.19 | 0.25 | 0.30 | 0.35 | ||
5 | Tensile Strength | MD | No Bending | N/10 mm width | ≥80 | ≥120 | ≥140 | ≥180 | ≥190 | ≥270 | ≥320 | ≥340 | ≥370 |
After Bending | ≥80 | ≥105 | ≥120 | ≥150 | ≥170 | ≥200 | ≥300 | ≥320 | ≥350 | ||||
TD | No Bending | ≥80 | ≥105 | ≥120 | ≥150 | ≥170 | ≥200 | ≥300 | ≥320 | ≥350 | |||
After Bending | ≥70 | ≥90 | ≥100 | ≥120 | ≥130 | ≥150 | ≥200 | ≥220 | ≥250 | ||||
6 | Elongation | MD | No Bending | ≥15 | — | — | |||||||
After Bending | ≥10 | ≥5 | ≥3 | ||||||||||
TD | No Bending | ≥20 | — | — | |||||||||
After Bending | ≥10 | ≥5 | ≥2 | ||||||||||
7 | Breakdown Voltage | KV | ≥6 | ≥7 | ≥9 | ≥10 | ≥12 | ≥15 | ≥18 | ≥20 | ≥22 | ||
8 | Bond strength at 25 degree C | — | No delamination | ||||||||||
9 | Bond strength at 180 degree C | — | \\ No delamination, no blister, no adhesive flow | ||||||||||
10 | Temperature | ℃ | 155 | ||||||||||
