Product Technical Datasheet .
Indicator name | Unit | Index value | |||||||
Nominal thickness | um | 25 | 40 | 50 | 75 | 100 | 125 | ||
Thickness deviation | um | +4 | +4 | +7 | +8 | +7 | +11 | ||
-3 | -4 | -6 | -6 | -7 | -7 | ||||
Tensile strength (vertical / lateral) | um | 165 | 165 | 165 | 165 | 165 | 165 | ||
Elongation at break (vertical/lateral) | % | 40 | 50 | 50 | 50 | 50 | 50 | ||
AC electrical strength (48Hz-62Hz) | V/um | 235 | 195 | 175 | 120 | ||||
Slitting width | range | mm | Allowable deviation | ||||||
<26 | ±0.4 | ||||||||
26~102 | ±0.8 | ||||||||
>102 | ±1.6 | ||||||||
density | kg/m3 | 1425±10 | |||||||
Melting point | - | Not melting | |||||||
Relative permittivity 23 ° C | 50Hz | - | 3.5±0.4 | ||||||
1KHz | 3.4±0.4 | ||||||||
Dielectric loss factor 23 ° C, 50 Hz or 1 Hz | - | ≤4.0×10-3 | |||||||
Volume resistivity | Ω·m | ≥1.0×1010 | |||||||
Surface resistivity | Ω | ≥1.0×1014 | |||||||
Dimensional stability (longitudinal and transverse shrinkage) (required only for thickness ≥25μm) | 150ºC | % | ≤0.35 | ||||||
400ºC | ≤2.5 | ||||||||
Water absorption (wet 24h) | % | ≤4.0 | |||||||
Long-term heat resistance temperature index | ºC | ≥200 |





Q1:Are you a trading company or manufacturer?
We are a manufacturer, We have our own workshop producing electrical insulation polyimide film.
Q2: Can you send samples for testing?
A4 size Samples & Small rolls are free supplied, customers just need to pay a litter shipping charge.
Q3: How can you guarantee the quality of mass goods is the same as the sample sent to me before?
We kept another same sample and marked it on the company when we sent it to the customer. So our products will be based on and also we will test the product before shipment.
Q4: Which package do you use?
The package is an important part to avoid goods breaking in transportation. We will choose suitable packing depending on the materials.
Package&Storage:
Packed in rolls and carton; store at room temperature; avoid fire. The storage period is 12 months.
If you are interested please do not hesitate to contact us.