Mylar Tape for Transformer Insulation
JIAO TAO TAO Mylar Tape for Transformer Insulation
JIAO TAO TAO Mylar Tape for Transformer Insulation is designed for transformer coil wrapping, layer separation, and electrical protection in transformer manufacturing. It helps improve insulation reliability, supports cleaner winding structures, and allows manufacturers to choose suitable tape widths and thicknesses for different transformer sizes and assembly requirements.
What is Mylar Tape for Transformer Insulation?
Mylar tape for transformer insulation is a polyester film insulation tape used in transformer winding structures where electrical isolation, layer separation, and stable wrapping performance are required. It is commonly applied to transformer coils, interlayer insulation areas, and terminal protection points. Compared with general-purpose tapes, this type of polyester insulation tape is more suitable for electrical manufacturing processes that need better dimensional control, cleaner application, and more flexible size selection.

Core Features
- Polyester film backing
Suitable for transformer insulation, coil wrapping, and layer separation applications. - Electrical insulation support
Helps provide stable insulation performance inside transformer structures. - Flexible size selection
Available in different slit widths, lengths, and thickness options for different transformer models. - Cleaner winding structure
Helps organize wrapping and insulation layout more consistently during production. - OEM converting support
Supports slitting, rewinding, and packaging customization for transformer manufacturers.
Technical Specifications
| Item | Description |
|---|---|
| Color | Yellow | Black | Green | Blue | Pink | Transparent | Amber | Red | Purple | White | Orange | Deep Yellow | Custom |
| Thickness (mm) | 0.05 | 0.055 | 0.06 | 0.08 | 0.11 | 0.16 | Custom |
| Width (mm) | 1 mm to 1270 mm | Custom |
| Length (m) | 33 | 50 | 66 | 100 | Custom |
| Core Diameter (mm) | 25 | 32 | 38 | 76 | Custom |
| Packaging Method | Label | OPP Bag | PVC Box | Carton | Custom |
| Related Processing | + Release Liner | Die Cutting | Custom |
Detailed Technical Specifications
| Model | Total Thickness (mm) | Backing Thickness (mm) | Adhesive Thickness (mm) | Peel Strength (N/25mm) | Tensile Strength (N/10mm) | Elongation at Break (%) | Breakdown Voltage (kV) | Temperature Resistance (Long-term) | Flame Retardant Rating |
|---|---|---|---|---|---|---|---|---|---|
| JTT-MR2500 | 0.025 | 0.025 | 0 (Light Coat) | 6–7 | ≥32 | ≥60 | ≥3.8 | 130℃ | UL94 VTM-2 |
| JTT-MR2513 | 0.038 | 0.025 | 0.013 | 6–7 | ≥32 | ≥70 | ≥4.0 | 130℃ | UL94 VTM-2 |
| JTT-MR5000 | 0.050 | 0.050 | 0 (Light Coat) | 7–8 | ≥35 | ≥80 | ≥4.5 | 130℃ | UL94 VTM-2 |
| JTT-MR5005 | 0.055 | 0.050 | 0.005 | 7–8 | ≥35 | ≥80 | ≥4.8 | 130℃ | UL94 VTM-2 |
| JTT-MR5030 | 0.080 | 0.050 | 0.030 | 8–9 | ≥38 | ≥100 | ≥5.5 | 130℃ | UL94 VTM-2 |
| JTT-MR7525 | 0.100 | 0.075 | 0.025 | 8–10 | ≥40 | ≥100 | ≥6.0 | 130℃ | UL94 VTM-2 |
| JTT-MR10030 | 0.130 | 0.100 | 0.030 | 9–11 | ≥45 | ≥120 | ≥7.0 | 130℃ | UL94 VTM-2 |
| JTT-MR12525 | 0.150 | 0.125 | 0.025 | 10–12 | ≥50 | ≥120 | ≥8.0 | 130℃ | UL94 VTM-2 |
Main Applications
- Transformer coil outer wrapping
Used to wrap transformer coils and improve insulation organization during assembly. - Layer-to-layer insulation
Helps separate winding layers and maintain electrical isolation inside transformer structures. - Terminal area protection
Can be used to protect local electrical contact areas where controlled insulation is required. - General transformer assembly insulation
Suitable for electrical separation and fixing in transformer production and repair work.
How to Choose the Right Tape Size
- Narrow widths are suitable for small transformer coils, edges, and terminal insulation points.
- Medium widths are commonly used for standard transformer coil wrapping and interlayer coverage.
- Wider rolls are better for larger transformer bodies or broader insulation areas.
- Thinner grades are easier to apply in compact winding structures.
- Thicker grades are more suitable when stronger insulation build-up or added surface protection is needed.

Advantages & Suitable Scenarios

Customization Options
1. Size Customization
- Custom width
- Custom length
- Custom thickness
- Custom core size
2. Converting Options
- Slit rolls
- Rewound rolls
- Custom cut lengths
- OEM packaging
3. Color Options
- Yellow
- Black
- White
- Blue
- Green
4. Supply Support
- OEM / ODM support
- Bulk industrial supply
- Export packaging support
- Factory direct delivery
FAQ — JIAO TAO TAO Mylar Tape for Transformer Insulation

Q1 | What is mylar tape used for in transformers?
It is mainly used for transformer coil wrapping, layer separation, terminal area protection, and electrical insulation inside transformer structures.
Q2 | How do I choose the right width?
The width should match the coil height, insulation coverage area, and wrapping method. Narrow widths are better for smaller coils, while wider widths are more efficient for larger winding areas.
Q3 | How do I choose the right thickness?
Thinner tape is more flexible for tight winding structures. Thicker tape is more suitable when additional insulation build-up or stronger protection is needed.
Q4 | Can it be customized?
Yes. JIAO TAO TAO supports custom width, length, thickness, color, and OEM packaging according to transformer production requirements.
Q5 | Is it suitable for bulk transformer production?
Yes. It is suitable for batch transformer manufacturing and can be supplied in slit rolls or other converting formats for industrial use.
Q6 | Does it support OEM service?
Yes. OEM slitting, rewinding, and bulk industrial supply are available.
Need help choosing the right industrial tape?
Send us your application details, including temperature, surface material, size, quantity and current problem. Our team will help recommend a suitable tape material or custom die-cut solution.
Comprehensive score