Polyester Heat Shrinkable Binding Tape is a woven insulation tape made from modified polyester fibers. Designed for transformer coils, motor windings and reactor assemblies, it provides strong shrinkage force, reliable electrical insulation and secure fastening after heat treatment.
In addition to standard specifications, we support customized solutions including width, thickness, shrinkage rate and roll length to meet different transformer and motor manufacturing requirements. Available in various configurations for different electrical insulation applications.
• Strong Heat Shrinkage Performance
The tape shrinks tightly around coils after heating, providing firm and durable binding without loosening or rebound.
• Excellent Electrical Insulation
Offers stable dielectric properties and reliable insulation performance for transformers, motors and other electrical equipment.
• High Mechanical Strength
Manufactured from high-strength polyester fibers, ensuring excellent tensile strength and long-term fastening reliability.
• Heat Resistance up to Class F Class (155°C)
Suitable for continuous operation in demanding electrical insulation systems with excellent thermal stability.
• Improved Coil Integrity
Keeps windings compact and secure, helping reduce vibration and improve overall product consistency.
• Compatible with Varnish Impregnation
The compact binding structure helps improve impregnation efficiency and contributes to a cleaner finished appearance.
• Transformer Coil Binding
Used to secure transformer windings before varnish impregnation and final assembly.
• Motor Winding Fastening
Provides reliable fastening and reinforcement for motor coils and stator windings.
• Reactor Coil Wrapping
Helps maintain coil stability and mechanical strength during operation.
• Electrical Insulation Assembly
Suitable for fastening and insulating electrical components in industrial equipment.
| Property | Unit | Values | |
| Material | – | Modified Polyester Fiber | |
| Color | – | White | |
| Thickness | mm | 0.1(Custom Thickness Available) | |
| Width | mm | 10-50(Custom Width Available) | |
| Shrinkage | % | ≥20-50 | |
| Tension Strength | N/10mm | ≥200 | |
| Insulation Class | – | F Class(155℃) | |
| Temperature Resistance | ℃ | 155 | |
| Dielectric Strength | No Breakdown at 1KV/1min | ||
| Volume Resistivity | Ω·m | ≥3×10⁷ | |
| Texture | Plain/Twill | ||
| Density | Length Wise | ends/in | 44±2 |
| Cross Wise | 33±2 | ||
| GSM | g/m³ | 210±5 | |
• Low Shrink Type
Shrinkage Rate: 18%–23%
Suitable for general winding fastening applications.
• High Shrink Type
Shrinkage Rate: 40%–45%
Suitable for applications requiring stronger compression force and tighter coil binding.
Q: What is polyester heat shrinkable binding tape used for?
A: It is mainly used for binding and fastening transformer coils, motor windings and reactor coils while providing additional electrical insulation.
Q: What happens after heating?
A: The tape shrinks tightly around the winding, creating a compact and secure structure with improved mechanical strength.
Q: Can the tape be used in oil-immersed transformers?
A: Yes. Selected grades are suitable for long-term use in transformer oil environments.
Q: Can you provide custom sizes?
A: Yes. Width, thickness, length and shrinkage rate can be customized according to application requirements.
Q: What is the difference between low-shrink and high-shrink types?
A: Low-shrink grades provide moderate compression, while high-shrink grades offer stronger binding force for demanding applications.
Q: Is the tape compatible with varnish impregnation (VPI process)?
A: Yes. It is compatible with standard VPI processes — the open-weave structure enables uniform resin penetration, while the binder maintains coil shape during impregnation and curing.
GBS provides high-quality polyester heat shrinkable binding tape with customized specifications, stable performance and fast global delivery. Contact us today for technical support and samples.
GBS Die Cut, as adhesive tape supplier, focuses on the research & development, production and sales of various types of adhesive tapes for different industries and has been authorized as golden distributor of many noted brands for so many years, such as Nomex, Formex, Rogers Poron, 3M, Tesa, and so forth.
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