75μm PET Polyester Film
As a PET Polyester Film Manufacturer, Jinlu Film produces this 75μm grade for buyers who want a mid-heavy insulation film with a higher voltage ceiling. The 14.9 kV breakdown voltage puts it above the thinner gauges, which means fewer layers are needed in transformer and coil builds — saving material and assembly time. Tensile strength sits at 216/224 MPa, and thermal shrinkage stays at 1.0% MD, keeping the film dimensionally stable through winding and heat exposure.
Key Specifications
| Thickness | 75μm |
| Material | PET (polyethylene terephthalate) |
| Tensile strength | MD 216 MPa / TD 224 MPa |
| Elongation at break | MD 173% / TD 159% |
| Thermal shrinkage at 150°C, 30 min | MD 1.0% / TD 0.2% |
| Breakdown voltage | 14.9 kV |
| Volume resistivity at 20°C | 2E+17 Ω·cm |
| Dissipation factor at 20°C, 1 kHz | 40 |
| Coefficient of friction | μs 0.6 / μd 0.4 |
Applications
Interlayer insulation for transformers, chokes and coils, 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
- 14.9 kV breakdown voltage reduces layer count
- Stable MD shrinkage for winding accuracy
- 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 50 μm. For a higher voltage ceiling, see 100 μm or 125 μm. We also list a 0.075 mm PET film, a 75μm BOPET film, a 75μm PET film for motor insulation and our PET polyester film overview. Everything is in the PET film category. To learn more, read 75μm PET polyester film manufacturer: sourcing mid-gauge insulation film at scale and the PET insulation film guide.
FAQ
What is the breakdown voltage of 75μm PET polyester film?
14.9 kV, as listed in the specifications above.
Why does a higher breakdown voltage reduce layer count?
A film that withstands more voltage lets engineers use fewer insulation layers in transformer and coil builds, saving material and assembly time.
What is it used for?
Interlayer insulation for transformers, chokes and coils, wire and cable wrapping, flexible printed circuits, membrane switches and die-cut insulation parts.
Can I get samples?
Contact us with your width and application, and we will send a quote and samples.
