3M™ Black Polyester Film Electrical Tape 1388B-1 features a 1.0-mil glossy black polyester film backing coated with an acrylic adhesive. Engineered for applications requiring both Class 130°C electrical insulation and a sleek, premium glossy black cosmetic appearance in visible power adapters and consumer electronics.
Key Performance Highlights
- High-gloss black polyester backing provides an immaculate, premium cosmetic finish
- Non-corrosive acrylic adhesive prevents copper corrosion and edge flagging
- Effective optical light barrier for light-sensitive sensors and power supplies
- UL Recognized Class 130°C component for consumer electronic adapters
Recommended Industrial Applications
Aesthetic black outer wrap for transformers, power adapter coils, optical light blocking
Authoritative Technical Specifications
| Backing Material | 1.0 mil (0.025 mm) glossy black polyester film |
|---|---|
| Adhesive System | Acrylic pressure-sensitive adhesive |
| Total Thickness | 0.063 mm (2.5 mil) |
| Operating Temperature | Up to 130°C (266°F) · UL Class 130°C |
| Visual Color / Appearance | Glossy Black (1-mil 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 |
