Slot Insulation Paper Manufacturer in India
Class E Fish Paper for Slot, Phase & Turn-to-Turn Insulation
Harnawa Insulations is a recognized manufacturer of Slot Insulation Paper in India offering good quality laminated insulation paper which is also referred to as Fish Paper. Our Slot Insulation Paper belongs to our Laminated Insulation Paper Composites category and consists of the electrical characteristics of the press paper along with the mechanical characteristics of the polyester film.
Product Overview
Slot Insulation Paper is made up of two-layer laminated sheets, which include a combination of 100% sulfate wood pulp presspaper and PET polyester film using B-class Adhesive. The paper provides fiber strength and flexibility, whereas the polyester film helps increase the dielectric strength, smoothness of the surface, and water resistance properties of the material, making it flexible even at lower temperatures.
| Specification | Details |
| Product Name | Slot Insulation Paper |
| Common Name | Fish Paper |
| Construction | Insulating Paper + Polyester Film |
| Insulation Class | Class E |
| Thermal Rating | 120°C |
| Color Options | Blue, Cyan, Natural Brown (custom colors available) |
| Supply Form | Rolls, Sheets, Strips |
| Typical Applications | Slot, phase, turn-to-turn & liner insulation |
| End Use Equipment | Class E/B motors and electrical appliances |
Also Known As: FDR / Garlam / Griflex / Triplex
The Slot Insulation Paper has various trade names used in the Indian electrical industry, including FDR, Garlam, Griflex, and Triplex. They all indicate the same specification of Fish Paper that is of Class E and has a temperature rating of 120°c. Irrespective of what name you use for ordering, Harnawa guarantees you the same product with similar specifications.
Technical Specifications
| Property | Unit | Requirement |
| Thickness | mm | 0.10 – 0.60 (multiple options available) |
| Thickness Tolerance | % | ±15 (±10 for higher thickness grades) |
| Nominal Grammage | g/m² | 115 – 730 (depending on thickness) |
| PET Film Thickness | µm | 23 |
| Tensile Strength (MD) | N/10mm | 90 – 540 |
| Tensile Strength (CD) | N/10mm | 60 – 360 |
| Breakdown Voltage | kV | ≥ 6 |
| Temperature Index | — | ≥ 120 |
Contact our technical team for a full datasheet matched to your specific thickness and application.
Why Choose Harnawa as Your Slot Insulation Paper Manufacturer in India
- Reliable Dielectric Breakdown Strength — A minimum dielectric strength of 6kV for reliable insulation capabilities
- Thick and Thin Choices — 0.10mm to 0.60mm thickness range to suit your application’s exact motor or appliance slot configuration
- Wide Color Range — Offered in Blue, Cyan, Natural Brown, and other customized colors in roll form, sheets, or strips
- Domestic Supply — As an Indian manufacturer, our supply will be much quicker than that of our international competitors
Applications
- Slot insulation – Slot liner for electric motors and generators to act as an insulator between the stator windings and core
- Phase insulation – To insulate individual winding phases to avoid electrical breakdown
- Turn-to-turn insulation – Insulator between the winding turns within the coil
- Liner insulation – General lining used in motor and appliance construction
Explore Our Related Insulation Products
Slot Insulation Paper is often specified alongside other insulation materials in motor and transformer manufacturing. You may also need:
Industries We Serve
Slot Insulation Paper is used across multiple industries we serve, including:
- Motor Construction
- Generator Construction
- Transformer & Coil Construction
- Household & Industrial Electrical Appliances
- High-Temperature Electrical Applications
Frequently Asked Questions
1.What else is slot insulation paper known by?
It is widely referred to as Fish Paper; it is also available in India with trade names such as FDR, Garlam, Griflex, and Triplex, which are all synonymous for the same Class E, 120°C laminated material.
2.For what thermal class is slot insulation paper qualified?
Slot Insulation Paper is qualified Class E (120°C); ideal for use in Class E and Class B motors and electric appliances.
3.Are there any options for customization of slot insulation paper?
Yes – in multiple thicknesses (0.10mm-0.60mm); custom colors, and supply forms (rolls, sheets, strips).
4.Which other types of insulation materials are used along with slot insulation paper?
Slot Insulation Paper is generally used with insulation tapes and slot wedges.
5.How does buying from an Indian manufacturer beat out importation of slot insulation paper?
Buying slot insulation paper from Harnawa, as a slot insulation paper manufacturer in India, saves time, avoids customs duty and transport delays, and gives you immediate technical assistance for your requirement.
