Varnish Cloth Manufacturer, Supplier & Exporter in India
Varnish cloth is an electrical insulating fabric consisting of fiberglass cloth impregnated with varnish. It consists of the mechanical properties of glass fabric with dielectric properties of varnish, thus making it ideal for electrical applications which require flexibility, tensile strength, and insulating capabilities.
Varnished Fiber Glass Cloth is available from Harnawa Insulations to meet electrical insulation needs. It is fabricated from low-alkali E-glass fabric, which is heat-cleaned and treated with coupling agents prior to being impregnated with glyptal type varnishes. Harnawa also provides varnished glass fabric constructions in silicone varnish systems.
As one of the leading manufacturers, suppliers and exporters of varnish cloths in India, Harnawa provides electrical insulation materials for transformer and coil construction, motors, generators, electric vehicles, capacitors and other industrial uses.
What Is Varnish Cloth?
The varnish cloth is an electrical insulation fabric made of fiberglass and is varnished. The fiberglass fabric provides the mechanical strength, while the varnish provides the dielectric strength.
The varnished fiber glass cloth from Harnawa is produced using the E-glass fabric having low alkali content. The fabric is heated and cleaned and is then coupled and impregnated with glyptal type varnishes.
For those applications where the unvarnished fiberglass fabric is preferred, you may also check out Fiberglass Cloth (Unvarnished).
The varnish cloth is available both in straight cut and bias cut, enabling the selection of the fabric according to the needs of different electrical insulation applications.
Key Features of Varnish Cloth
Varnished cloth exhibits various features that can be attributed to its use in applications for electrical insulation:
- High mechanical strength
- High tensile strength
- High flexibility
- High dielectric strength
- Thermal stability
- Low-alkali E-glass cloth construction
- Available as straight cuts
- Available as bias cuts
- Useful in applications for electrical insulation
Fiberglass exhibits good mechanical strength, whereas the varnish provides high dielectric strength.
Varnish Cloth for Electrical Insulation
There should be some insulating materials for electrical machinery that not only have the properties of electrical insulation but also have the capacity to withstand mechanical working and manufacturing.
The varnish cloth is ideal for applications where there are demands for high tensile strength, flexibility, mechanical strength, and dielectric properties.
Harnawa’s varnished fiberglass cloth and tapes are applicable in numerous electrical applications where high tensile strength and flexibility are demanded.
The selection of the material may be done depending upon the electrical design, insulation construction, temperature conditions, and manufacturing process.
In addition to the above mentioned insulating materials, Harnawa also supplies Insulation Crepe Papers. Harnawa also supplies Insulation Kraft Papers.
Glyptal Varnished Fiberglass Cloth
Harnawa offers varnished glass fabric using glyptal type varnishes. The low-alkali E-glass fabric is heat-cleaned and treated with coupling agents before being impregnated with glyptal type varnishes.
The glass fabric provides mechanical strength, while the varnish provides dielectric strength. This construction can be used for electrical insulation applications where flexible fiberglass insulation with varnish impregnation is required.
Silicone Varnished Fiberglass Cloth
A second insulation structure is also described by Harnawa using silicone varnish.
In the structure, varnished glass fabric is wound helically with layers of silicone varnish on them, and an external layer consists of a braid of glass fibre varnished with silicone varnish.
The right varnish system must be chosen considering the electrical, thermal, mechanical and application properties needed.
For insulation structures requiring insulating varnish products, Harnawa also offers Insulating Varnishes and Thinner.
Varnish Cloth Temperature Requirements
Temperature plays a vital role in the selection of an insulation material for an electric component.
From the product description of Harnawa, it is clear that fiberglass varnished fabrics are mostly used for applications having Class B (130°C) or higher temperatures.
On the other hand, there are separate specifications of Insulation Class A and 105°C on the present page. As there is inconsistency between the two on the present page, it is advised to get clarity regarding the exact insulation class and temperature before issuing any technical claim.
Varnish Cloth Thickness and Width
Following are the currently listed specifications of Harnawa:
Thickness: 0.05mm to 0.35mm
Width: 650mm to 1350mm
Color: Natural Brown
Moreover, it is mentioned that there is an epoxy resin diamond dotted surface and Kraft Paper, 100% sulphate pulp in the materials section. However, these specifications seem unusual for a varnished fiberglass cloth product; therefore, the technical specifications need to be verified with Harnawa.
Varnish Cloth for Transformers and Coils
Varnish cloth can be used in suitable electrical insulation applications for transformer and coil construction where fiberglass reinforcement and varnish impregnation are required.
For other transformer insulation requirements, Harnawa also offers Diamond Dotted Paper.
Customers looking for additional transformer insulation materials can also explore Aramid Papers for suitable electrical insulation applications.
Varnish Cloth for Motor and Generator Applications
Motors and generators require insulation materials that can provide electrical separation and withstand the mechanical requirements of manufacturing and operation.
Varnish cloth can be used in suitable insulation constructions where flexibility, tensile strength, and dielectric properties are required.
For additional flexible insulation requirements, Harnawa also provides Fiberglass Insulation Sleeves.
For other insulation construction requirements, Laminated Insulation Paper Composites can also be considered according to the application.
Varnish Cloth Manufacturer in India
Choosing an experienced varnish cloth manufacturer in India is important for electrical equipment manufacturers that require consistent insulation materials for industrial applications.
Harnawa Insulations provides a broad range of electrical insulation products, including fiberglass fabrics, fiberglass sleeves, insulation papers, laminated insulation materials, polyester films, aramid papers, and other electrical insulation components.
The company’s product portfolio includes both Fiberglass Cloth (Unvarnished) and Varnished Fiber Glass Cloth, allowing customers to select between untreated fiberglass fabric and varnish-impregnated fiberglass insulation according to their application.
Varnish Cloth Supplier in India
Harnawa is a varnish cloth supplier in India serving customers requiring fiberglass-based electrical insulation materials.
When enquiring about varnish cloth, customers can provide information such as:
- Required thickness
- Required width
- Cut type
- Application
- Required quantity
- Operating temperature
- Insulation requirements
- Packaging requirements
Providing complete application details can help identify the appropriate varnished fiberglass cloth construction.
Varnish Cloth Exporter from India
Harnawa also serves customers requiring electrical insulation materials for international applications. As a varnish cloth exporter from India, Harnawa can handle enquiries for varnished fiberglass cloth and other insulation products.
International buyers can provide their required product specifications, quantity, packaging requirements, application, and destination country when requesting an export quotation.
Why Choose Harnawa for Varnish Cloth?
Electrical insulation materials are available from Harnawa as a wide range of offerings for various industrial purposes.
Some reasons for choosing Harnawa are:
- Expertise in electrical insulation materials
- Insulation products made of varnished fiberglass
- Mechanical strength
- Flexible insulation materials
- High dielectric strength
- Straight cut possibilities
- Bias cut possibilities
- Transformers and coils application
- Motors application
- Generators application
- Electric vehicles application
- Capacitors application
- Domestic delivery
- International delivery
Certifications are provided on Harnawa’s website, including UL, CE, RoHS, ISO 9001:2015 and REACH.
Related Electrical Insulation Products
Varnish cloth can be used alongside other electrical insulation materials depending on the insulation system and application. For related requirements, explore:
For electrical insulation requirements, you can also explore PET Polyester Films.
For high-performance electrical insulation applications, explore Aramid Papers.
For flexible fiberglass insulation applications, explore Fiberglass Insulation Sleeves.
For laminated insulation requirements, explore Laminated Insulation Paper Composites.
For electrical insulation sheets and components, explore Insulation Sheets & Electrical Insulation Components.
For fiberglass-based cable insulation requirements, explore Fiberglass Insulated Cables.
For fiberglass material requirements, explore Fiberglass Yarn.
Harnawa’s current product portfolio places Varnished Fiber Glass Cloth alongside these insulation products.
Buy Varnish Cloth from Harnawa
In case you need to purchase varnish cloths for insulating purposes, Harnawa can help you in inquiring about the product according to the application that is needed. Customers can give information like thickness, width, cutting method, quantity, temperature, and the application of the product.
In case of bulk and industrial requirement, please contact Harnawa Insulations for product information and quotation.
Frequently Asked Questions
What is varnish cloth?
Varnish cloth is a fiber glass cloth, which is varnished to give mechanical strength, flexibility, and insulating characteristics.
What is varnish cloth used for?
The varnish cloth is used in various electrical applications requiring high tensile strength, flexibility, mechanical strength, and high dielectric strength.
What kind of fiber glass is used in varnish cloth?
Harnawa describes its product as low alkali E-glass cloth which is heat treated and coupled before varnish impregnation.
Is varnish cloth available in different cut form?
Yes, Harnawa’s product description says it is available in both straight cut and bias cut forms.
What varnish is used in varnish cloth?
The product descriptions by Harnawa mentions glyptal type varnish construction and silicone varnish construction for its varnished glass cloth insulation system.
Where can I purchase varnish cloth in India?
Harnawa Insulations can be contacted for varnish cloth requirements in India with details such as thickness, width, cut form, quantity, and applications.
