Focused on thermal class, dielectric properties, lamination methods, flame retardancy, compliance documents, and custom sizing. (Samples and third-party testing available)
What are the key advantages of PEI insulation paper?
It features high heat resistance, excellent dielectric stability, dimensional integrity, and flame retardancy—ideal for long-term operation in high-temperature and high-voltage environments. The Dk/Df and thermal data on this page are reference values; final performance should be verified through finished-product testing.
How should thermal class and continuous operating temperature be evaluated?
We provide representative data for continuous operating temperature, but actual thermal endurance depends on thickness, layer structure, airflow, and load conditions. It’s recommended to perform temperature rise and aging evaluations under real assembly conditions to confirm safety margins.
Do Dk and Df values change with frequency or temperature?
Dielectric constant (Dk) and dissipation factor (Df) are influenced by frequency, temperature, and humidity. The values shown are typical test results. For high-frequency or wide-temperature applications, we recommend verifying with samples under actual conditions to guide design of clearance and insulation distances.
Can you provide flame retardancy ratings and regulatory documentation?
This product has representative flame-retardant data (e.g., UL 94 VTM-0 certification). Official statements and certificates can be provided upon project request. Final compliance should be confirmed based on the specific thickness, structure, and verified by third-party testing.
What customization ranges are available for thickness, weight, and width?
Typical specifications: thickness 0.02–0.2 mm, basis weight 13–120 gsm, width 20–35 cm, length 500–1000 m. Slitting, sheet cutting, and special dimensions can be customized upon request.
What processing and lamination methods are suitable?
Compatible with common processes such as heat lamination, calender bonding, and ultrasonic welding. It can also form multi-layer insulation structures with other substrates. We recommend small-scale testing to fine-tune temperature, pressure, and dwell time to prevent performance variation from over-lamination.
What should be considered when using it in transformers or motors?
We recommend checking the following:
• Ensure it meets your required thermal and flame-retardant class.
• Verify that thickness, width, and cutting method fit your assembly process.
• Confirm compatibility with existing materials such as varnish, adhesive, and wire insulation.
• Confirm bonding or fixation stability.
In practice, perform small-scale assembly and temperature tests before full production. Typical uses include coil separators, interlayer insulation, and edge protection.
How do moisture absorption, breathability, and dimensional stability affect insulation performance?
The material offers good dimensional stability and breathability, helping to reduce trapped air and moisture buildup. However, humidity, thermal cycling, and processing conditions can still affect dielectric and mechanical properties. We recommend evaluating stability under real operating and aging conditions.
Can you provide environmental and safety documentation?
We can provide general documents such as RoHS/REACH compliance statements, material declarations, batch traceability, and CoA/CoC. Additional documentation or third-party reports can be arranged during the project phase.
What are the sampling, MOQ, and lead time options?
Small sample rolls are available for evaluation. MOQ depends on width, thickness, and customization level, typically ranging from 2,000 to 10,000 m². Standard lead time is about 3–5 weeks. For urgent or special specifications, please share your target schedule for assessment.
