Our AMA Aramid Insulation Paper is a flexible three-layer composite electrical insulation material made of a polyester film core laminated with adhesive and bonded to aramid paper on both sides, offering excellent heat resistance, electrical insulation, and mechanical strength. Its performance fully complies with the requirements of NMN insulation paper under GB/T 5591.3-2008, while providing a more cost-effective solution, making it an ideal substitute for NMN insulation paper. According to the thickness of the aramid paper, AMA insulation material is available in two types: 0.04 mm with a yellow identification line and 0.05 mm with an orange identification line. AMA aramid paper composite insulation is widely used for slot-to-slot, phase-to-phase, and turn-to-turn insulation in Class F motors, and is also suitable for interlayer insulation in transformers and other electrical appliances.
1. Three-layer composite structure with aramid paper and polyester film
2. Excellent heat resistance suitable for F-class insulation systems
3. Good dielectric strength and electrical reliability
4. Strong mechanical performance with flexibility for easy processing
5. Stable quality, consistent thickness, and smooth surface
6. Cost-effective alternative to NMN insulation paper
| Item | Unit | Requirement | |||||||||
| Nominal thickness | mm | 0.15 | 0.17 | 0.19 | 0.22 | 0.24 | 0.26 | 0.31 | 0.37 | 0.41 | |
| Thickness tolerance | mm | ±0.022 | ±0.024 | ±0.026 | ±0.031 | ±0.037 | ±0.041 | ||||
| Grammage | g/m2 | 150±18 | 170±20 | 200±24 | 230±27 | 270±32 | 305±36 | 360±43 | 450±54 | 515±61 | |
| Film nominal thickness | um | 36 | 50 | 75 | 100 | 125 | 150 | 188 | 250 | 300 | |
| Tensile strength | MD no bending |
N/10mm | ≥150 | ≥150 | ≥170 | ≥190 | ≥220 | ≥240 | ≥270 | ≥330 | ≥370 |
| MD after bending |
≥90 | ≥90 | ≥105 | ≥120 | ≥150 | ≥180 | ≥200 | ≥300 | ≥330 | ||
| TD no bending |
≥80 | ≥90 | ≥100 | ≥110 | ≥130 | ≥170 | ≥200 | ≥250 | ≥300 | ||
| TD after bending |
≥70 | ≥70 | ≥90 | ≥100 | ≥120 | ≥150 | ≥150 | ≥200 | ≥230 | ||
| Elongation | MD | % | ≥15 | ≥3 | |||||||
| (%) | TD | ≥20 | ≥10 | ||||||||
| Breakdown voltage |
No bending | ≥7 | ≥8 | ≥11 | ≥12 | ≥14 | ≥16 | ≥19 | ≥23 | ≥25 | |
| KV | |||||||||||
| After bending |
≥6 | ≥7 | ≥9 | ≥10 | ≥12 | ≥14 | ≥15 | ≥18 | ≥19 | ||
| Delamination | 一 | No delamination, no bubbleor other defects | |||||||||
| Heat affected(200±2℃) 10min |
No delamination, no bubble, no adhesive flow | ||||||||||
| Long-term heat resistance | ≥180 | ||||||||||
| (temperature index TI) | |||||||||||
| Weight and area conversion | m2/Kg | 7.23 | 6.33 | 5.18 | 4.39 | 3.8 | 3.36 | 2.85 | 2.28 | 1.97 | |
* Slot-to-slot insulation in electric motors
* Phase-to-phase insulation in F-class motors
* Turn-to-turn insulation for motor windings
* Interlayer insulation in transformers
* Electrical insulation for various electrical appliances and equipment
GBS Die Cut, as adhesive tape supplier, focuses on the research & development, production and sales of various types of adhesive tapes for different industries and has been authorized as golden distributor of many noted brands for so many years, such as Nomex, Formex, Rogers Poron, 3M, Tesa, and so forth.
Transformer insulation papers and flexible laminates are essential materials that ensure dielectric strength, thermal endurance, and mechanical stability in transformers, motors, and other electrical equipment. These materials are widely used
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