Insulation Film
6021 Insulation Polyester Film
Electrical Mylar polyester film or Mylar electrical insulation sheets, or Melinex polyester film is made of PET molten and biaxial directional drawing. The 6021 polyester film has good insulation performance and excellent mechanical properties. It is a widely used electrical insulation film and can be used to produce soft composite material, wire wrap, electronic electrical insulation gasket, motor groove, inter-turn insulation, and print, etc.
Type: Insulation Film
Insulation class: E (120°C)
Thickness: 0.125mm, 0.15mm, 0.188mm, 0.25mm, 0.30mm, 0.35mm
Width: 1000mm or customized
Form: in rolls, tapes etc
Color: Milky white
Description
High-performance Mylar polyester film for motor and transformer etc. Excellent dielectric properties, moisture resistance, and thermal stability. UL/IEC compliant. Contact for free samples.
PET polyester film also called mylar electrical insulation sheets or melinex polyester film is made of PET molten and biaxial directional drawing. The 6021 polyester film has good insulation performance and excellent mechanical properties. It is a widely used electrical insulation film and can be used to produce soft composite material, wire wrap, electronic electrical insulation gasket, motor groove, inter-turn insulation, and print, etc. Chengrui Insulation can provide transparent PET film, milky white PET film and black PET film
Insulation class: E (120°C)
Thickness: 0.125mm, 0.188mm, 0.25mm, 0.30mm, 0.35mm
Width: 1000mm or customized
Form: in rolls
Color: milky white
Mylar Electrical Insulation Sheets Features
1. Low coefficient of friction
2. Excellent lamination
3. Good shape retention and spring effect
4. High dielectric strength.
Polyester Electrical Film Applications
For low-voltage motors, electrical coils turn insulation, ends wrap insulation, liner insulation, magnetic wire insulation, capacitor dielectric slot insulation of E and B class motor, For cable wrapping, transformers and composite materials making; It also used in packaging, glass steel, clothing collar lining, and other occasions.
Polyester Film Specifications
Item | Unit | Index | |||||||
Thickness | um | 75 | 100 | 125 | 175 | 188 | 200 | 250 | 300 |
Tolerance | % | ±3 | ±3 | ±3 | ±4 | ±4 | ±4 | ±4 | ±4 |
Tensile strength | Mpa | ≥ 180 | ≥170 | ≥ 70 | ≥ 160 | ≥ 150 | ≥ 150 | ≥ 50 | ≥ 150 |
Elongation | % | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 |
Frequency electrical strength | V/um | ≥ 105 | ≥ 90 | ≥ 80 | ≥ 69 | ≥ 66 | ≥ 64 | ≥ 60 | ≥ 55 |
Volume resistivity | Ω.cm | ≥ 1.0x1014 | |||||||
Dissipation factor | - | ≥ 3.0x10-3 | |||||||
Thermal class | °C | 120 | |||||||
Q: How to choose the appropriate thickness of polyester film?
A: The choice depends on the voltage level and mechanical requirements. Low-voltage applications (such as coil wrapping) commonly use 0.025-0.05mm; medium- and high-voltage insulation (such as motor slot insulation) commonly uses 0.075-0.125mm; structural components (such as gaskets) require 0.15mm or thicker. Our engineers can recommend the appropriate thickness for you.
Q: What are the main differences between polyester film (PET) and polyimide film (PI)?
A: Polyester film (PET) offers better value for money, with a temperature resistance of approximately 130°C and excellent overall performance. Polyimide film (PI, Kapton) can withstand temperatures exceeding 200°C, but it is more expensive. Below 130°C, PET is usually a more economical choice.
Q: Can you provide composite films with adhesive backing?
A: Yes. We can provide polyester films coated with acrylic or silicone adhesive on one or both sides for sealing, splicing, or installation.
Parameter
| Type | Insulation Film | |||||
| Insulation class | E (120°C) | |||||
| Thickness | 0.125mm, 0.15mm, 0.188mm, 0.25mm, 0.30mm, 0.35mm | |||||
| Width | 1000mm or customized | |||||
| Form | in rolls, tapes etc | |||||
| Color | 6020 is transparent film,6021 is milky white | |||||
| MOQ | 1000kg | |||||
| For more information, please contact us: [email protected] | ||||||
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Quick Answers for You
Quick answers to your pressing questions.
Q: How do you ensure consistent quality from batch to batch?
A: We control key parameters such as thickness, dimensions, dielectric performance, mechanical strength and moisture according to the product specification. Batch inspection and traceable test records help maintain consistent performance for repeat orders.
Q: Can you provide samples for testing?
A: Yes. Samples can be provided for material evaluation, testing or production trials. For customized materials, sample availability and lead time depend on the required specification.
Q: What technical documents can you provide?
A: Depending on the material, we can provide ISO, TDS, RoHS, REACH, SGS reports and relevant IEC or UL information for technical evaluation and supplier approval.
Q: What are your MOQ, lead time and shipping options?
A: MOQ and lead time vary by material, specification and processing requirement. Low MOQ and trial order can be accept accordingly. We support international shipments by sea, air and express courier.
Q: Are you a trader or manufacturer?
A: Chengrui combines our own manufacturing capabilities (flexible laminates, insulation sleeving etc) with a qualified partner production network. This allows us to supply a broader range of electrical insulation materials while maintaining specification control, quality inspection and technical support.
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