Premium Composite Nmn Polymer Insulation Paper for Electrical Applications

• Application: Capacitor, Generator, Inductor, Insulation Sleeving, Motor, Transformer
• Color: White
• Material: Polyester Film
• Model NO.: Insulation Material
• Maximum Voltage: 10KV~20KV
• Thermal Rating: H 180
• Thickness: 0.14mm-0.38mm
• Temperature: High Temperature Resistance
• Feature: Insulation
• Type: Insulation Paper
• Thermal Class: H
• Usage: Transformer and Motors
• Transport Package: Pallet / Carton
• Specification: Customized
• Trademark: Surada
• Origin: China
• HS Code: 8503009090
• Production Capacity: 20000kg/Moth

Product Description

Product Description

We offer aramid paper, domestically produced NMN, domestically produced DuPont paper, imported DuPont NOMEX (T410), 6640NMN composite paper, NHN composite paper, 6641DMD composite paper, 6630DM composite paper, pre-impregnated DMD, NM composite paper, ordinary kraft paper (PB paper), green shell paper, yellow shell paper, motor film, insulating spacers, red steel paper PVC sheets, polyester film, shrink tape, epoxy resin boards, various insulating adhesive tapes, and insulating materials for slitting and further processing, etc.

Mainly applicable to electrical engineering, electrical appliances, lighting transformers, reactors, stabilisers, power supplies, motors (motors), small appliances, and other electronic and electrical products and accessories.

Our NMN composite insulation polymer paper roll is a premium insulation material designed for demanding electrical applications. It features a three-layer soft composite structure: outer layers of DuPont NMN insulation paper, combined with an inner polyester film layer, affording both excellent heat resistance (Class H, 180 °C) and strong dielectric strength.

This material is ideal for applications such as motor winding slot insulation, transformer slot liner, interturn insulation, and generator coils. It ensures reliable insulation under harsh environments while maintaining flexibility and consistent thickness.

Available thicknesses from 0.14 mm to 0.38 mm, with precise tolerances, and grammage tailored per requirement. We offer custom sizes, roll or sheet formats, sample service, and fast delivery. Surface finish is smooth, uniform, defect-free.

Features

Class H (180 °C) NMN composite insulation paper laminated with polyester film for superior thermal and dielectric performance.
Available thickness range 0.14-0.38 mm with tight tolerance; widths & lengths customizable.
Excellent mechanical properties: high tensile strength, edge tear resistance, uniform smooth surface free of pinholes.
High breakdown voltage, reliable electrical insulation for motor winding, slot liner, transformer coils.
Flexible roll format; sample sheets available; MOQ reasonable; packaging moisture-proof for safe transport.

Specification

Thickness	0.14mm-0.38mm
Thickness Tolerance	±0.01 - ±0.04 mm (depending on thickness)
Thermal class	H (180 °C)
Working temperature	180 degree
Color	White
From	Roll / Sheets / Custom Cut Pieces

Composition

Performance Requirements  

NMN is a three-layer soft composite material with the outer two layers made of DuPont Insulation Paper from DuPont and the inner layer made of polyester film.

Properties
NMN is a soft composite material with a heat resistance rating of H-class (180°C), featuring excellent mechanical properties such as tensile strength and edge tear resistance, as well as good electrical strength. Its smooth surface ensures trouble-free operation when used in low-voltage motors with automatic winding machines.

Appearance  
The surface should be uniform, smooth, and free of defects such as bubbles, pinholes, wrinkles, and imperfections.

Application Remarks
NMN combines the excellent temperature resistance and tear strength of DuPont paper with the superior dielectric strength and mechanical properties of polyester film. It is suitable for slot insulation, turn insulation, and cushion insulation in motors.

Performancer equirements

Properties	Units	Values
Nominal thickness	mm	0.14	0.15	0.18	0.20	0.23	0.25	0.30	0.35
Thicknessallowed tolerance	mm	±0.01	±0.02	±0.02	±0.03	±0.03	±0.03	±0.03	±0.04
Nominal grammage	g/m²	140	180	210	250	270	300	360	460
Grammageallowedtolerance	g/m²	±17	±20	±30	±30	±35	±40	±50	±50
Film nominal thickness	um	50	75	100	125	140	165	200	250
Tensile strength (MD)	N/10mm	≥100	≥150	≥160	≥180	≥200	≥220	≥270	≥320
ensile strength (XD)	N/10mm	≥80	≥90	≥110	≥130	≥150	≥180	≥200	≥250
Elongation (MD)	%	≥10	≥12	≥12	≥12	≥12	≥12	≥12	≥12
Elongation(XD)	%	≥15	≥15	≥15	≥18	≥18	≥18	≥18	≥18
Electric breakdown voltage	KV	≥6	≥7	≥10	≥11	≥12	≥13	≥15	≥18
Bond strength at 180±2°C	Nodelamination,no blister,noadhesive flow

Transaction Information

Applications

MOQ: 100 kg (or sample volume)

Sample: Free A4 size sheet / low-cost sample available

Packaging: Moisture-proof pallet / carton packing

Payment Terms: T/T, L/C, Western Union etc.

Delivery Time: 7-15 days for standard size, contact for custom order lead time

Motor winding slot insulation
Transformer slot liners
Generator coils
Interturn insulation
Phase insulation in electrical machines
Capacitor insulation & reactor applications

Product Image

FAQ

Q1.Can you customize thickness & width?
 Yes, thickness from 0.14-0.38 mm, width up to 1000 mm, others by request.

Q2.Do you provide samples?
 Yes, A4 sample sheets available.

Q3.What is the thermal class?
 H class (180 °C).