Manufacturer for Electrical Insulating Paper - 6640 NMN Nomex paper polyester film flexible composite insulation paper – D&F
Manufacturer for Electrical Insulating Paper - 6640 NMN Nomex paper polyester film flexible composite insulation paper – D&F Detail:
6640 Polyester film/polyaramide fibre paper (Nomex paper) flexible laminate (NMN) is a three-layer flexible composite insulation paper in which each side of polyester film (M) is bonded with one layer of polyaramide fibre paper (Nomex) imported from Dupont. The thermal class is F. It is also calles as 6640 NMN or F class NMN, NMN insulation paper and NMN insulating paper.


Product Features
6640 NMN has excellent electrical insulating properties, heat resistance, mechanical strength and impregnated property.
Applications
Used for slot insulation, interphase insulation, inter turn insulation and liner insulation in F-class electric motors and electric appliances.
According to customer’ request, we can produce two-layer laminate NM.



Supply Specifications
Nominal width:900 mm.
Nominal weight: 50+/-5kg /Roll. 100+/-10kg/roll, 200+/-10kg/roll
The splices shall not be more than 3 in a roll.
Color: natural color.
Packing And Storage
6640 is supplied in rolls, sheet or tape and packed in cartons or/and pallets.
6640 should be stored in clean & dry warehouse with temperature below 40℃. Keep away from fire, heat and direct sunshine.
Test Method
As per the stipulations in Part Ⅱ: Test Method, Electrical Insulating Flexible Laminates, GB/T 5591.2-2002 (MOD with IEC60626-2: 1995).
Technical Performances
The standard values for 6640 are shown in Table 1 and relevant typical values shown in Table 2.
The properties (mechanical strength, breakdown voltage, flexibility and stiffness) of NMN are different for using different nominal thickness’ polyester film. The thickness of the polyester film should be clearly indicated in purchasing order or contract.
Table1: Standard permormance values for 6640 (NMN) flexible composite insulation paper
| No. | Properties | Unit | Standard performance values | ||||||||
| 1 | Nominal thickness | mm | 0.15 | 0.18 | 0.2 | 0.23 | 0.25 | 0.3 | 0.35 | ||
| 2 | Thickness tolerance | mm | ±0.02 | ±0.03 | ±0.04 | ||||||
| 3 | Grammage | g/m2 | 180±25 | 210±30 | 240±30 | 260±35 | 300±40 | 350±50 | 430±50 | ||
| 4 | Tensile strength | MD | Not folded | N/10mm | ≥150 | ≥160 | ≥180 | ≥200 | ≥220 | ≥270 | ≥320 |
| After folded | ≥80 | ≥110 | ≥130 | ≥150 | ≥180 | ≥200 | ≥250 | ||||
| TD | Not folded | ≥90 | ≥110 | ≥130 | ≥150 | ≥180 | ≥200 | ≥250 | |||
| After folded | ≥70 | ≥90 | ≥110 | ≥130 | ≥150 | ≥170 | ≥200 | ||||
| 5 | Elongation | TD | % | ≥10 | ≥12 | ||||||
| MD | ≥15 | ≥18 | |||||||||
| 6 | Breakdown Voltage | Not folded | kV | ≥7 | ≥10 | ≥11 | ≥12 | ≥13 | ≥15 | ≥20 | |
| After folded | ≥6 | ≥8 | ≥9 | ≥10 | ≥12 | ≥13 | ≥16 | ||||
| 7 | Bonding property at room temp | — | No delamination | ||||||||
| 8 | Bonding propertyat 180℃±2℃, 10min | — | No delamination, no bubble, no adhesive flow | ||||||||
| 9 | Temperature index for thermal endurance (TI) | — | ≥155 | ||||||||
Table 2 Typical permormance values for 6640 (NMN) flexible composite insulation paper
| No. | Properties | Unit | Typical performance values | ||||||||
| 1 | Nominal thickness | mm | 0.15 | 0.18 | 0.2 | 0.23 | 0.25 | 0.3 | 0.35 | ||
| 2 | Thickness tolerance | mm | 0.01 | 0.01 | 0.015 | ||||||
| 3 | Grammage | g/m2 | 185 | 215 | 246 | 270 | 310 | 360 | 445 | ||
| 4 | Tensile strength | MD | Not folded | N/10mm | 163 | 205 | 230 | 267 | 287 | 325 | 390 |
| After folded | 161 | 202 | 225 | 262 | 280 | 315 | 370 | ||||
| TD | Not folded | 137 | 175 | 216 | 244 | 283 | 335 | 380 | |||
| After folded | 135 | 170 | 210 | 239 | 263 | 330 | 360 | ||||
| 5 | Elongation | TD | % | 20 | 22 | ||||||
| MD | 25 | 30 | |||||||||
| 6 | Breakdown Voltage | Not folded | kV | 11 | 13 | 15 | 17 | 22 | 23 | 24 | |
| After folded | 9 | 11 | 14 | 16 | 19 | 21 | 22 | ||||
| 7 | Bonding propertyat room temp | No delamination | |||||||||
| 8 | Bonding propertyat 180℃±2℃ 10min | — | No delamination, no bubble, no adhesive flow. | ||||||||
| 9 | Temperature indexFor thermal endurance (TI) | — | 173 | ||||||||
Production Equipment
We have two lines, the production capacity is 200T/month.




Product detail pictures:
Related Product Guide:
With our leading technology at the same time as our spirit of innovation,mutual cooperation, benefits and development, we are going to build a prosperous future alongside one another with your esteemed enterprise for Manufacturer for Electrical Insulating Paper - 6640 NMN Nomex paper polyester film flexible composite insulation paper – D&F , The product will supply to all over the world, such as: Mozambique, Nepal, kazan, As a way to use the resource on the expanding info in international trade, we welcome prospects from everywhere on the web and offline. In spite on the high quality objects we offer you, effective and satisfying consultation service is supplied by our qualified after-sale service group. Item lists and in depth parameters and any other info weil be sent to you timely for the inquiries. So you should make contact with us by sending us emails or call us when you've got any questions about our organization. ou could also get our address information from our site and come to our enterprise. We get a field survey of our merchandise. We're confident that we are going to share mutual accomplishment and create solid co-operation relations with our companions within this market place. We're seeking forward for your inquiries.
The factory workers have a good team spirit, so we received high quality products fast, in addition, the price is also appropriate, this is a very good and reliable Chinese manufacturers.







