NPN Laminated Nomex Paper

Nomex Insulation Paper (NMN) | High-Temperature Flexible Laminate Insulation

Harnawa manufactures NPN Laminated Nomex laminated insulation paper in India for Class F & Class H motors and generators. High thermal & dielectric strength. Request a quote.

NPN Laminated Nomex Paper Manufacturer in India

Class F / Class H High-Temperature Insulation Laminate

Harnawa Insulations is one of the reputable NPN Laminated Nomex Paper suppliers in India, providing top-quality Nomex Insulation Paper (NMN/NPN) as part of the Laminated Insulation Paper Composites series. Our three-layer composite paper combines Nomex® aramid paper laminated on either side of a polyester film layer and designed to be used in motors and generators up to Class F (155°C) and Class H (180°C).

Why Choose Harnawa as Your Manufacturer in India

Proven Capability at High Temperatures – Guaranteed performance up to 180°C, appropriate for applications in class F and H rotating machinery
Availability in a Variety of Thicknesses – Available in thicknesses ranging from 0.12mm to 0.50mm, suitable for slot liner, wedges, or interlayer insulation applications
Excellent Dielectric Performance – Dielectric breakdown range from ≥7kV to ≥20kV depending on thickness even when bent
12 Month Quality Guarantee – Guaranteed quality for each batch produced
Flexibility in Delivery Options – Available in rolls, metres, or pre-cut pieces depending on application needs
Quick Delivery from Within Country – Being an Indian manufacturer, we can provide quicker delivery and smaller minimum order quantities compared to imported ones

Explore Our Related Insulation Products

NPN Laminated Nomex Paper is often specified alongside these related materials depending on your equipment’s thermal class and application:

Slot Insulation Paper (FDR/Garlam/Griflex/Triplex) — A Class E economical alternative for standard slot insulation
DMD-FPF Laminated Fleece Insulation Paper — A cost-effective Class B/F option for low- and medium-temperature applications
APA Laminated – Aramid + Polyester — Combines aramid thermal stability with polyester flexibility
AHA Laminated – Aramid + Polyimide — A premium option for the highest-temperature, highest-stress applications
Epoxy Prepreg Laminated Aramid Paper — For Class F applications requiring epoxy-impregnated dimensional stability
Aramid Papers — Including
Nomex 410 Insulation Paper for Motor Winding for non-laminated aramid insulation needs
Insulation Tapes (High Temperature) — For securing and finishing high-temperature windings

Industries We Serve

NPN Laminated Nomex Paper is used across multiple industries we serve, including:

Motor Construction
Generator Construction
Transformer & Coil Construction
High-Temperature Electrical Applications

Frequently Asked Questions

1.What are the typical applications of NPN/NMN Nomex Laminate?

Its applications include slot liners, wedges, phase insulation, and inter-layer insulation for Class F & Class H motors, generators, and other rotating electrical machines.

2.What distinguishes NPN laminate from DMD-FPF laminate?

While NPN laminate employs Nomex® aramid paper that provides higher thermal endurance (Class F/H), DMD-FPF laminate utilizes polyester fleece, making it more suitable for low temperature and economical applications.

3.What thickness options are available?

Nominal thickness of the product goes from 0.12mm to 0.50mm; its breakdown voltage rises from ≥7kV to ≥20kV depending on thickness.

4.Why purchase from an Indian manufacturer rather than importing?

Purchasing NPN Laminated Nomex Paper directly from Harnawa, an Indian manufacturer of such products, provides you with faster delivery without import charges or long transportation and allows you to consult the manufacturer regarding your application.

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Nomex Insulation Paper (NPN) | High-Temperature Flexible Laminate Insulation

Nomex Insulation Paper (NPN) is a high-performance flexible laminated electrical insulation material designed for Class F and Class H applications. It is a three-ply composite laminate consisting of a polyester film core bonded between two layers of Nomex® aramid paper. This construction provides an excellent balance of thermal endurance, dielectric strength, and mechanical robustness.

Nomex® paper is well known for its outstanding heat resistance and long-term thermal stability, making NMN laminates highly reliable in demanding operating conditions. The polyester film layer contributes excellent mechanical strength, dimensional stability, low moisture absorption, and strong dielectric performance. Together, these layers enhance the efficiency, safety, and service life of rotating electrical machines.

NPN insulation laminates are commonly used in motors and generators operating up to 180 °C, and are widely applied in both production and repair environments. Typical uses include slot liners, wedges, phase insulation, and interlayer insulation in Class H motors and generators, as well as large and specialty Class F motors. NMN can be supplied in rolls, sheets, or cut formats to suit different manufacturing requirements.

Product Details

Product Name

Nomex Insulation Paper (NPN)

Construction

Nomex Paper + Polyester Film + Nomex Paper

Core Layer

Polyester Film (PET)

Insulation Class

Class F / Class H

Thermal Rating

155 °C (Class F) / 180 °C (Class H)

Thickness Range

0.12 mm – 0.50 mm

Supply Form

Rolls, linear metres, custom-cut tapes and parts

Typical Applications

Slot liners, wedges, phase insulation, interlayer insulation

End Use Equipment

Motors, generators, transformers, electrical appliances

Technical Specifications – Laminated Insulation Paper ( NPN )

Properties			Units	Values
Nominal thickness			mm	0.15	0.18	0.20	0.23	0.25	0.30	0.35
Thickness tolerance			mm	±0.02		±0.03			±0.04
Grammage and tolerance			g/m²	180±25	210±30	240±30	260±35	300±40	350±50	430±50
Tensile strength	MD	No bending	N/50mm	≥150	≥160	≥180	≥200	≥220	≥270	≥320
	MD	After bending	N/50mm	≥80	≥110	≥130	≥150	≥180	≥200	≥250
	TD	No bending	N/50mm	≥90	≥110	≥130	≥150	≥180	≥200	≥250
	TD	After bending	N/50mm	≥70	≥90	≥110	≥130	≥150	≥170	≥200
Elongation		MD	%	≥10				≥12
Elongation		TD	%	≥15				≥18
Breakdown voltage		No bending	kV	≥7	≥10	≥11	≥12	≥13	≥15	≥20
Breakdown voltage		After bending	kV	≥6	≥8	≥9	≥10	≥12	≥13	≥16
Bonding property at room temperature			/	No delamination
Bonding property at 180±2°C, 10 min			/	No delamination, no bubble, no adhesive flow
Temperature index of heat resistance (TI)			/	≥155
Quality warranty period			/	Twelve months