Laminated Insulation Paper Composites Manufacturer in India

Flexible Composite Insulation Paper for Motors, Generators & Transformers

Harnawa Insulations is one of the prominent manufacturers of insulation papers in India. We manufacture a wide variety of insulation paper composites that are specifically designed to be used for the insulation of motors, generators, and transformers. Our insulation paper composites come in combination with various materials such as aramid, polyester, polyimide, and fleece to provide the best possible solution in terms of cost, mechanical properties, and heat resistance of the insulation paper.

From the most economical F class laminated paper for the insulation of motor to an advanced aramid polyimide laminate for extremely high-temperature EVs and aerospace applications, our range includes all types of insulation papers used in electrical manufacturing industry.

What is Laminated Insulation Paper?

Laminated insulation paper refers to a type of motor insulation paper, which is made up of the combination of various layers of insulating film and insulating fibrous paper like aramid (Nomex) paper, polyester (PET/Mylar) film, polyimide film, or polyester fleece. The combination of these insulating materials makes use of high temperature adhesives. Each layer has its own benefits in terms of electrical properties and heat resistance:

Layers of aramid paper – provide mechanical strength, tear resistance, and long term heat stability

Layers of polyester film or polyimide film – provide dielectric strength, dimensional stability, and water resistance

Layers of fleece – (economical versions) increase flexibility and cost effectiveness at lower temperatures

This flexible insulating paper is used inside rotating electric machines as slot liners, phase insulation, and inter-turn insulation.

Insulation Paper Types We Manufacture

As a laminated insulation paper manufacturer in India, Harnawa produces the following construction types, covering Class B through Class H thermal ratings:

This range means you can source every insulation paper type — from standard electrical insulation paper to premium aramid polyimide laminate — from a single manufacturer in India, without juggling multiple suppliers.

Why Choose Harnawa as Your Electrical Insulation Paper Manufacturer in India

• Wide Product Range – From Class E fish paper to Class H aramid polyimide laminates catering to all thermal demands
• Authentic F-Class/Nomex F-Class Insulation Papers – UL approved (E310670), RoHS, and REACH compliant in our entire F-Class product line
• Quality Assurance – Each batch is tested for dielectric strength, tensile properties, and dimensional accuracy
• Quick In-country Supply – As an Indian based manufacturer, we have shorter lead times and smaller MOQs than importing
• Engineering Assistance – We will assist you in choosing the right type of insulation papers, thickness grade, and construction depending on your particular winding or transformer application
• Compliant Manufacturing Facility – ISO 9001:2015, UL, CE, RoHS, and REACH compliant – see our certifications

Applications: Motor Winding Insulation Paper

Laminated insulation composites made from our paper materials are utilized in motor windings for electrical machines, as follows:

• Slot Insulation – Insulation of stator slots of motors, generators and transformers
• Phase Insulation – Phase isolation in same electrical machine
• Inter-turn Insulation – Inter-turn insulation of winding
• Liner Insulation – General insulation liner for electrical appliances
• Insulation Barriers – Insulation of high voltage sections in transformers and coils

Industries We Serve

Our composite insulation materials are used across multiple industries we serve, including:

• Transformer & Coil Construction
• Motor Construction
• Generator Construction
• High-Temperature Electrical Applications
• Electric Vehicles (EV) & Traction Motors
• Capacitor Construction

Related Insulation Products

Beyond our laminated composites, explore our full insulation range:

• Aramid Papers — Including
  Nomex 410 Insulation Paper for Motor Winding
• Insulation Pressboard/Papers — Including F-Class Kraft and Crepe papers
• Polyimide Films — The core material used in our AHA and NHN laminates
• Insulation Tapes (High Temperature) — Including
  Polyimide Tape and
  Polyester Electrical Tape for securing windings
• Insulation Sheets and Components — Including slot wedges used alongside laminated insulation paper

Frequently Asked Questions

1.What are the primary types of insulation paper?

Insulation papers that are commonly used include Fish Paper (Class E), DMD-FPF (Class B/F), NMN & APA (Class F), NPN (Class F/H), and AHA/NHN Aramid Polyimide Laminates (Class H).

2.What is F Class insulation paper used for?

F Class insulation paper (155°C) is used for standard motor windings, generators, and transformers where there is a need for good thermal resistance at an affordable price when compared to class H insulating papers.

3.What is Nomex F Class insulation paper?

Nomex F Class insulation paper is one of the aramid polyimide laminates such as NMN and APA using Nomex (aramid paper by DuPont) combined with polyester film to reach 155°C service temperature.

4.What’s the difference between laminated insulation paper and composite insulation material?

There is no difference, since laminated insulation paper is a kind of composite insulation material composed of several layers of aramid, polyester, polyimide, or fleece combined together to take advantage of their properties.

5.Why should you buy electrical insulation paper manufactured in India rather than importing?

The benefit of purchasing the electrical insulation paper made in Harnawa – electrical insulation paper manufacturer in India – is faster delivery, lack of import duties, and immediate assistance in choosing the appropriate type of insulation paper.