188μm PET Polyester Film
As a PET Polyester Film Manufacturer, Jinlu Film produces this 188μm grade for jobs where insulation has to do more than just insulate. At 24.6 kV, the breakdown voltage is one of the highest in the standard range, but the real story is its 188% MD elongation — the film stretches under stress instead of tearing, which matters in die-cutting and heavy assembly. It is the right pick when a thick, tough, high-voltage layer is needed.
Key Specifications
| Thickness | 188μm |
| Material | PET (polyethylene terephthalate) |
| Tensile strength | MD 183 MPa / TD 177 MPa |
| Elongation at break | MD 188% / TD 127% |
| Thermal shrinkage at 150°C, 30 min | MD 1.0% / TD 0.1% |
| Breakdown voltage | 24.6 kV |
| Volume resistivity at 20°C | 5E+17 Ω·cm |
| Dissipation factor at 20°C, 1 kHz | 43 |
Applications
High-voltage interlayer insulation for transformers and chokes, wire and cable wrapping, flexible printed circuits (FPC), membrane switches, die-cut insulation parts, adhesive tape backing, and spiral tube winding.
Target industries: electrical and electronic manufacturing, coil and transformer winding, flexible circuitry, and industrial insulation.
Why Choose Jinlu Film as Your PET Polyester Film Manufacturer
- 24.6 kV breakdown voltage and 188% MD elongation
- Tough enough for die-cutting and heavy assembly
- Custom width and roll length
- Fast sampling and dependable lead times
- Export-grade packing and global shipping support
- Factory-direct pricing
Compare With Other Thicknesses
For a thinner film, see 125 μm. For even more body and voltage, see the 0.25 mm PET film and the 0.35 mm PET film. We also list a 0.188 mm PET film, a 188μm BOPET film, a 188μm PET film for motor insulation and our PET polyester film overview. Everything is in the PET film category. To learn more, read 188μm PET polyester film manufacturer: heavy-gauge insulation for high-voltage designs and the PET insulation film guide.
FAQ
What is the breakdown voltage of 188μm PET polyester film?
24.6 kV, as listed in the specifications above.
What does 188% MD elongation mean?
It is how far the film stretches in the machine direction before it breaks. The film stretches under stress instead of tearing, which matters in die-cutting and heavy assembly.
When should I choose 188μm?
When a thick, tough, high-voltage layer is needed.
Can I get samples?
Contact us with your width and application, and we will send a quote and samples.
