Transformer barrier tape is an electrical insulation material used to provide separation and insulation between different parts of a transformer. It can help maintain the required insulation distance and protect components during winding and assembly.
Depending on the transformer design and insulation system, barrier tape can be made with different film, non-woven, adhesive, and composite structures.
What Is Transformer Barrier Tape?
Transformer barrier tape is designed to create an insulating barrier between conductive or functional parts of a transformer.
It may be used in areas where controlled insulation thickness, electrical separation, and reliable positioning are required.
The exact construction depends on the transformer's design, operating temperature, electrical requirements, and manufacturing process.
Where Is Barrier Tape Used in Transformers?
Barrier tape can be used in several transformer manufacturing processes, including:
- Layer insulation
- Winding insulation
- Separation between conductive components
- Insulation barriers
- Component protection
- Customized transformer insulation structures
The required tape construction should be determined according to the specific transformer design.
Common Materials for Transformer Barrier Tape
PET / Polyester Barrier Tape
PET film is commonly used for electrical insulation because of its combination of mechanical strength, dimensional stability, and insulation performance.
PET-based barrier tape can be customized according to the required thickness and width.
Composite Barrier Tape
Composite constructions can combine different insulation materials to achieve specific mechanical, electrical, or processing characteristics.
For example, a composite film structure or PET/non-woven construction may be selected for a particular transformer application.
Non-Woven Barrier Tape
Non-woven materials can provide flexibility and conformability while serving as part of an electrical insulation system.
The material and adhesive construction should be selected according to the required insulation and temperature conditions.
How to Choose Transformer Barrier Tape?
Several factors should be considered when selecting barrier tape.
1. Thickness
The total thickness of the tape affects the insulation structure and available space inside the transformer.
Customers should specify whether the required thickness refers to the backing material or the complete tape construction.
2. Width
Barrier tape width should match the transformer design and required insulation area.
For customized products, manufacturers may supply narrow-width rolls according to the customer's winding or assembly process.
3. Electrical Insulation
Depending on the application, important requirements may include:
- Breakdown voltage
- Dielectric strength
- Insulation resistance
- Insulation thickness
Test methods and conditions should be confirmed when comparing different suppliers.
4. Temperature Resistance
The tape should be compatible with the operating temperature and insulation system of the transformer.
Temperature performance depends on the complete construction, including the backing material and adhesive.
5. Adhesive Performance
If the barrier tape uses an adhesive layer, the adhesive should be compatible with the target substrate and operating conditions.
Tack, peel strength, aging performance, and temperature resistance may need to be evaluated.
Customized Transformer Barrier Tape
Transformer manufacturers may require specific combinations of:
- Material
- Thickness
- Width
- Adhesive
- Roll length
- Core size
- Winding configuration
At Liangyi Tape, we provide customized electrical insulation tape solutions with coating, rewinding, and slitting capabilities.
Our self-produced insulation tape categories include:
- PET / Mylar insulation tape
- PI / Kapton tape
- PET composite non-woven tape
- PET silicone tape
- Fiberglass cloth tape for electrical insulation applications
We can work with customers on customized tape dimensions and constructions according to their application requirements.
Transformer Barrier Tape Manufacturer in China
Changshu Liangyi Tape Industrial Co., Ltd. is a source manufacturer of industrial electrical insulation tapes in China.
Our focus is on electrical insulation products rather than general carton sealing tape. We provide customized converting and manufacturing solutions for industrial customers.
Relevant quality and compliance documentation includes UL E246820, ISO 9001, ISO 14001, IATF 16949, REACH, and RoHS-related testing documentation.
Conclusion
Transformer barrier tape provides an insulating barrier and separation function in transformer manufacturing. PET, composite film, and non-woven constructions can be selected for different applications depending on electrical, thermal, mechanical, and processing requirements.
When sourcing barrier tape, customers should clearly define the required material, total thickness, width, adhesive, electrical performance, and application conditions.
Looking for customized transformer barrier tape?
Contact Liangyi Tape with your required material, thickness, width, quantity, and application for a customized electrical insulation tape solution.
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