AMA Insulation Paper – Aramid + Polyester + Aramid Manufacturer in India
F Class, 155°C Composite Insulation Paper for Motor Winding
Harnawa Insulations is a renowned brand offering AMA insulation paper from India, manufacturing the Aramid-Polyester-Aramid laminate paper under our product line of Laminated Insulation Papers. The AMA paper uses aramid paper and polyester film to ensure good thermal stability and high flexibility, which makes it an ideal choice of insulation paper as per F class requirement.
What is AMA Insulation Paper?
The AMA insulation paper is a three-layered composite laminate formed by adhering the polyester film core with the hot-rolled aramid paper on either side using the F-Class adhesive. The use of this type of material in the production of the insulation papers makes the product have excellent capabilities in terms of thermal endurance, dielectric strength, and mechanical stability that make it a good insulating paper for the motor winding.
AMA comes in two constructions depending on the aramid layer thickness, which include 0.04 mm (yellow line) and 0.05 mm (orange line). The product performs according to the NMN insulation paper standards (GB/T 5591.3-2008).
Why Choose Harnawa as Your AMA Insulation Paper Manufacturer in India
- Genuine F-Class (155°C) Thermal Endurance — For use in the motor winding and electrical appliance application at Class F level
- UL Listed (E310670) — Independently tested and certified for international use, along with RoHS and REACH standards
- Thickness in Nine Levels — In range of 0.13mm to 0.47mm, enabling control over the design of motor winding insulation
- High Dielectric Strength — Breakdown voltage from ≥6kV up to ≥28kV based on thickness grades
- Compatibility with Motor Winding — High compatibility with insulation varnish and excellent overload resistance
- No Bonding Problems — There is no delamination, blistering, or adhesive migration even when heated to 180°C for 10 minutes
- Benefits of Domestic Production — Being a producer of this product line in India, you get quick delivery and small MOQ compared to imports
- Certifications for Quality — ISO 9001:2015, UL, RoHS, and REACH approved — see our complete list of Certifications
Technical Specifications
| Type | Thickness (mm) | Grammage (g/m²) | PET Film (µm) | Tensile MD (N/10mm) | Tensile TD (N/10mm) | Breakdown Voltage (kV) |
| 2-1-2 | 0.13 | 140±16 | 25 | ≥100 | ≥80 | ≥6 |
| 2-1.5-2 | 0.15 | 150±18 | 36 | ≥150 | ≥90 | ≥7 |
| 2-2-2 | 0.17 | 170±20 | 50 | ≥160 | ≥90 | ≥8 |
| 2-3-2 | 0.19 | 200±24 | 75 | ≥170 | ≥105 | ≥11 |
| 2-4-2 | 0.22 | 230±27 | 100 | ≥190 | ≥120 | ≥12 |
Temperature Index (T.I): 155°C | Adhesive stability confirmed at 180°C ±2°C for 10 min with no delamination, blistering, or adhesive flow.
Applications: Insulation Paper for Motor Winding
AMA is widely used as insulation paper for motor winding and related applications, including:
- Slot Insulation — Lining motor and generator stator slots
- Inter-Turn Insulation — Between winding turns within a coil
- Liner Insulation — General insulation lining in Class F motors and electrical appliances
A Note on “Composite Polyimide Insulation Paper” Searches
AMA is an Aramid + Polyester composite (PET film core) — it does not contain polyimide film. If you specifically need a Composite Polyimide Insulation Paper, our AHA Composite Polyimide Insulation Paper (Aramid + Polyimide + Aramid, Class H, 180°C) or its equivalent NHN Insulation Paper are the correct products — both use a polyimide film core for higher thermal-class applications than AMA’s Class F rating.
Industries We Serve
AMA insulation paper is used across multiple industries we serve, including:
- Motor & Generator Construction
- Transformer & Coil Construction
- Household & Industrial Electrical Appliances
- General F-Class Electrical Applications
Related Insulation Products
Frequently Asked Questions
1.What is meant by AMA?
AMA stands for Aramid + Polyester + Aramid – a laminate where the core is made up of PET polyester film, while both the outer layers are made of aramid paper.
2.Is AMA insulation paper suitable for motor winding?
Yes – It is specially designed for slot, inter-turn and liner insulation in motor winding, generators & electrical appliances of Class F grade.
3.Does AMA qualify as a composite Polyimide insulation paper?
No – As AMA uses polyester film as its core layer rather than using polyimide, we recommend you go for AHA or NHN laminates which are actually composite polyimide insulation papers & fall under Class H grade.
4.What are the available thicknesses?
There are nine grades available with thickness ranging from 0.13 mm to 0.47 mm with breakdown voltage ranging from ≥6kV to ≥28kV respectively.
5.Why should I consider purchasing from India when I can import it from other places?
By buying AMA insulation paper directly from Harnawa as a manufacturer from India, you will save on time, import tariffs and shipping costs.
