10.4 kV Breakdown Voltage, 217 MPa MD Strength, and What to Check in a PET Polyester Film Factory
Product Overview
Choosing a 38μm PET Polyester Film is not just about the number on the spec sheet. The same nominal thickness can behave differently depending on how the film was produced and how consistently the supplier holds tolerances. At 38μm, this grade delivers a 10.4 kV breakdown voltage, 217 MPa MD tensile strength, and low 0.2% TD thermal shrinkage — solid numbers for electrical insulation and thin-gauge converting. But the real question buyers face is: which PET Polyester Film Manufacturer can deliver those numbers batch after batch?
Technical Characteristics
The following values are typical data for the 38μm specification. They are not intended as limiting specifications.
- Material: PET (Polyethylene Terephthalate)
- Thickness: 38 μm
- Tensile Strength: MD 217 MPa / TD 238 MPa
- Elongation at Break: MD 180% / TD 161%
- Thermal Shrinkage at 150°C, 30min: MD 1.2% / TD 0.2%
- Breakdown Voltage: 10.4 kV
- Volume Resistivity at 20°C: 2E+17 Ω·cm
- Dissipation Factor at 20°C, 1kHz: 40
- Coefficient of Friction: μs 0.6 / μd 0.4
Key Properties
- 10.4 kV breakdown voltage for reliable thin insulation
- Balanced MD/TD tensile strength for winding and converting
- Low TD shrinkage for dimensional control
- Consistent batch-to-batch performance from a qualified factory
Applications
38μm PET Polyester Film is used for electrical insulation, flyback transformers (FBT), choke coils, wire insulation and cable tape, flexible printed circuits (FPC), membrane switches, die-cut insulation parts, and spiral tube converting. Buyers in electrical, electronic, and flexible circuit manufacturing typically source this gauge in volume.
Why Choose Jinlu Film as Your Supplier
Jinlu Film is a PET Polyester Film Manufacturer and Supplier with factory-direct pricing, consistent thickness control, and stable dielectric performance. As a factory, we support custom width and roll length, export-grade packing, and global shipping. If you are comparing PET Polyester Film suppliers, request a sample and compare our batch data against the spec sheet.
Contact us today for a factory quote, technical data, or a sample of 38μm PET Polyester Film.
