50μm PET Polyester Film
As a PET Polyester Film Supplier, Jinlu Film supplies this 50μm grade to manufacturers who need a reliable middle-thickness insulation film rather than an extreme one. The 12.1 kV breakdown voltage covers a wide band of transformer, coil and cable insulation work, while the balanced 218/235 MPa tensile strength keeps the film stable through slitting, winding and die-cutting. It is the kind of specification that fits many production lines without needing to be re-qualified each time.
Key Specifications
| Thickness | 50μm |
| Material | PET (polyethylene terephthalate) |
| Tensile strength | MD 218 MPa / TD 235 MPa |
| Elongation at break | MD 184% / TD 172% |
| Thermal shrinkage at 150°C, 30 min | MD 1.1% / TD 0.1% |
| Breakdown voltage | 12.1 kV |
| Volume resistivity at 20°C | 4E+17 Ω·cm |
| Dissipation factor at 20°C, 1 kHz | 40 |
| Coefficient of friction | μs 0.6 / μd 0.4 |
Applications
Electrical 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 Supplier
- 12.1 kV breakdown voltage with balanced mechanical performance
- 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 38 μm. For more voltage and body, see 75 μm or 100 μm. We also list a 0.05 mm PET film, a 50μm BOPET film, a 50μm PET film for motor insulation and our PET polyester film overview. Everything is in the PET film category. To learn more, read 50μm PET polyester film manufacturer: how to source thin insulation film with confidence and the PET insulation film guide.
FAQ
What is the breakdown voltage of 50μm PET polyester film?
12.1 kV, as listed in the specifications above.
Why choose a middle-thickness film?
It fits many production lines without needing to be re-qualified each time, with balanced tensile strength through slitting, winding and die-cutting.
What is it used for?
Electrical 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.
