APA Insulation Paper – Aramid + Polyester Laminate Manufacturer in India
Class F, 155°C Electrical Insulation Laminate — A Cost-Effective NMN Alternative
Harnawa Insulations is a reputable manufacturer of APA insulation papers in India and makes this excellent performance Aramid-Polyester-Aramid laminates in its Laminated Insulation Paper Composites line of products. APA Laminated Papers offer the benefits of aramid paper in terms of heat resistance along with the flexibility and dielectric strength of the polyester film to make a dependable and economic F Class insulation paper.
What is APA Insulation Paper?
APA insulating paper consists of three-layered laminated composite which is made through lamination of polyester film (PET) with hot rolled aramid paper using F-Class adhesive. Aramid Polyester laminate construction results in good combination of thermal endurance, dielectric strength and mechanical stability.
The core of the product is made up of PET insulating film while the outer layers consist of aramid paper. APA insulating paper comes in two standard constructions depending upon thickness of aramid paper layer used (either 0.04mm yellow line or 0.05mm orange line), thus providing options to choose depending upon your mechanical and thermal requirements of your design.
APA insulating paper satisfies the requirements of NMN insulating paper (GB/T 5591.3-2008) in terms of electrical and mechanical properties while being cheaper than it, thus can be considered as a good alternative to NMN insulating paper.
Why Choose Harnawa as Your APA Insulation Paper Manufacturer in India
- True F-Class (155°C) Performance — Durable thermal stability for motors and electrical appliances of class F
- UL Listed (E310670) — Internationally tested and certified along with RoHS and REACH
- Nine Thicknesses Available — From 0.13mm to 0.47mm, providing accurate insulation design
- High Dielectric Strength — Breakdown voltage from ≥6kV to ≥28kV based on thickness grade
- High Compatibility — Good compatibility with insulation varnishes, easy to cut and high tolerance to overloads
- Stable Insulation Properties — No peeling, blistering, or adhesive bleed at 180°C for 10 minutes
- Cost-efficient Solution — Offers the same insulation quality as NMN but at a cheaper price
- Advantage in Domestic Production — Being a domestic manufacturer in India, we can provide faster delivery and smaller MOQ compared to imports
- Quality Control Certified — ISO 9001:2015, UL, RoHS, and REACH approved — see all Certificates
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 |
| 2-5-2 | 0.24 | 270±32 | 125 | ≥220 | ≥150 | ≥14 |
| 2-7.5-2 | 0.31 | 360±43 | 190 | ≥270 | ≥300 | ≥19 |
| 2-10-2 | 0.37 | 450±54 | 250 | ≥330 | ≥300 | ≥23 |
| 2-14-2 | 0.47 | 590±70 | 350 | ≥400 | ≥350 | ≥28 |
Temperature Index (T.I): 155°C | Adhesive stability is confirmed at 180°C +/– 2°C for 10 minutes without delamination, blisters or adhesive migration.
For more information on choosing the correct thickness grade and aramid structure (yellow line – 0.04mm / orange line – 0.05mm), please contact our technical department.
Applications
- 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 electrical equipment
Industries We Serve
APA laminated 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
How APA Compares to Our Other Laminated Composites
You may also want to explore our Aramid Papers range, including Nomex 410 Insulation Paper for Motor Winding, and our Insulation Tapes (High Temperature) range, including Polyester Electrical Tape for securing windings.
Frequently Asked Questions
1.What does APA mean?
APA means Aramid + Polyester + Aramid, laminate made of PET polyester film, which is surrounded by aramid paper from both sides.
2.Is APA insulation paper equal to NMN insulation paper?
Aramid + Polyester + Aramid insulation paper fully meets the requirements of NMN insulation paper (standard GB/T 5591.3-2008), providing almost identical electrical and mechanical characteristics, but being more economically efficient than the latter one.
3.Is APA Class F or Class H insulation paper?
Aramid + Polyester + Aramid insulation paper belongs to Class F (155 °C) insulation paper. If you need Class H (180 °C) insulation paper, take a look at our laminates AHA and NHN.
4.What are the possible thicknesses?
There are nine thickness grades from 0.13 mm to 0.47 mm with breakdown voltage of ≥6 kV to ≥28 kV and two kinds of aramid layers – 0.04 mm (yellow line) and 0.05 mm (orange line).
5.Why choose APA manufactured by Indian producer, not imported one?
Buying APA insulation paper from Harnawa as APA insulation paper manufacturer in India provides you shorter delivery time, absence of duties and technical support for your application.
