Polyester Film Manufacturer in India
Polyester films, also known as BOPET (Biaxially Oriented Polyethylene Terephthalate), are among the most flexible engineering plastics available that are widely used as electrical insulators. Known for their dielectric strength and mechanical rigidity and stability, polyester films have been adopted as a standard material in motors, transformers, and capacitors where the need exists for a dielectric barrier.
As a reputed manufacturer of polyester films in India, Harnawa Inc. is among the preferred polyester films manufacturers in India offering various grades of transparent and milk white polyester films in polyester film rolls and sheets to OEMs in electrical and industrial applications in India through our Mumbai-based manufacturing plant.
What is Polyester Film?
Polyester films are made using the biaxially oriented method, whereby the PET resin is stretched in the machine direction and transverse direction with controlled heat. Biaxial stretching results in alignment of the molecular structure, which gives the film high tensile strength, uniform thickness, low moisture uptake, and stable electrical insulating properties regardless of the operating conditions. The final product is a thin, tough, and good dielectric film used widely in electrical insulation, lamination, and converting processes.
Grades Available
Harnawa Inc. supplies polyester film across two core product lines:
| Product |
Description |
Best Suited For |
| Transparent Polyester / BOPET Film |
High-clarity biaxially oriented film with excellent optical transparency, strong mechanical strength, and reliable dielectric performance |
Electrical insulation, motor and transformer insulation, laminates, flexible packaging, printing |
| JBF Milky White Polyester Film |
Opaque, milky-white PET film with excellent dielectric strength, mechanical durability, and dimensional stability |
Electrical insulation and industrial applications requiring a smooth, consistent, non-transparent finish |
The two grades are obtainable in both polyester film sheet form and polyester film roll form, allowing fabricators and original equipment manufacturers the choice to use the specific grade that will work well with their process line.
Key Properties of Polyester Film
- High Dielectric Strength – Suitable insulating electrical properties suitable for use in challenging motors, transformers and capacitors
- High Mechanical Strength – Ability to withstand stresses, handling and conversion without ripping or distorting
- Dimensional Stability – Maintains even thickness throughout due to biaxial orientation, important for precise laminating and coating procedures
- Low Water Absorption – Maintains consistent electrical and mechanical properties even in wet conditions
- Chemical Resistance – Resistant to degradation by oils, solvents and other industrial chemicals
- Consistent Smooth Surface – Ensures consistent performance during laminating, coating and conversion processes
Applications of Polyester Film
Polyester film is widely specified across:
- Electrical Insulation
- Motor and Transformer Winding Insulation
- Capacitor Dielectric Films
- Electrical Component General-Purpose Insulation
Industrial and Converting Applications
- Film Laminations and Composite Materials Construction
- Flexible Packaging
- Printing and Labeling Substrates
- Coating and Converting Base Film
Electric Vehicles & Electronics
- Insulation Components for Electric Vehicle Motor and Battery Pack
- ECU Electronic Control Unit Insulation
Why Choose Harnawa Inc. Among Polyester Film Suppliers
As one of the established polyester film suppliers in the Indian electrical insulation industry, Harnawa Inc. offers:
- Types of Polyester film
- Transparent/Opaque Polyester film
- Polyester film roll/sheet form available
- Wide range of flexible film in width and thickness based on your requirement
- Certification like UL, CE, ROHS, ISO 9001:2015 & REACH
- Available across all over India cities like Mumbai, Delhi, Pune, Ahmedabad, etc.
Completing the Insulation System
Polyester film is frequently specified alongside other insulation materials to build a complete dielectric system for motors, transformers, and electrical equipment:
Sourcing all of these materials from a single certified supplier ensures compatibility, consistent quality standards, and simplified procurement for OEMs and panel manufacturers.
Certifications & Quality Assurance
All films and rolls of Polyester Film offered by Harnawa Inc. are made and tested under global quality standards of production, as shown below:
- UL certified
- CE compliant
- RoHS compliant
- ISO 9001:2015 standards of manufacturing
- REACH compliant
Frequently Asked Questions
1.Where all is polyester film used?
It finds applications in electrical insulation in motors, transformers, capacitors, laminating processes, packaging, printing, and converting processes in industries.
2.What is the difference between transparent BOPET films and milky white polyester films?
Transparent BOPET film has better optical qualities and is applicable in applications where visibility is required from the laminate. Milkey White film is an opaque type of film that can be used in applications where opacity is required.
3.Are there rolls of polyester film available?
Yes, Harnawa Inc. provides polyester film in both roll and sheet form, depending on the customized thickness and width according to the requirement.
4.What are the available thicknesses of polyester film?
The thickness and width can be customized according to applications – you may contact us for more details.
5.Can polyester film be used in electrical insulation of motors and transformers?
Yes. The polyester film has good dielectric strength and chemical and moisture resistance properties; hence it is used in motors and transformers.
