3M™ Polyester Film Electrical Tape 56 features a 1.0-mil yellow polyester film backing with a thermosetting rubber adhesive. Specially designed for outer wrapping and color-coded insulation in transformers, fractional horsepower motors, and electronic coil components requiring Class 130°C thermal performance and varnish resistance.
Key Performance Highlights
- Vibrant yellow color provides immediate visual identification on transformer coils
- Thermosetting rubber adhesive activates under heat to resist varnish and solvent penetration
- Excellent edge-tear and puncture resistance during automated coil wrapping
- UL Recognized Class 130°C component for electronic power supplies
Recommended Industrial Applications
Transformer outer wraps, color-coded coil phase insulation, fractional horsepower motor insulation
Authoritative Technical Specifications
| Backing Material | 1.0 mil (0.025 mm) yellow polyester (PET) film |
|---|---|
| Adhesive System | Thermosetting rubber pressure-sensitive adhesive |
| Total Thickness | 0.058 mm (2.3 mil) |
| Operating Temperature | 0°C to 130°C (32°F to 266°F) · UL Class 130°C |
| Visual Color / Appearance | Yellow (Opaque Polyester) |
| Dielectric / Flame Rating | UL Recognized, File E17385 · 5,000 Volts dielectric breakdown |
| Precision Converting | Precision Rotary Slitting, Die-Cutting, Custom Widths from 2mm to Log Width |
