25μm Polyimide Film for Flexible Insulation - Biaxially Stretched
GL General-Type Polyimide Yellow Film – Biaxially Stretched Standard PI Film For Flexible Insulation
Product Overview
Our GL General-Type Polyimide Yellow Film is a biaxially stretched, naturally amber-colored polyimide film designed for high-temperature insulation, adhesive tapes, and flexible circuit coverlays. Available in two optimized thicknesses (25μm & 50μm), it balances mechanical strength, thermal stability, and electrical properties—making it a versatile choice for electronics, aerospace, and industrial applications.
Key Features
✔ Biaxial Orientation – Uniform MD/TD strength (3:1 stretch ratio)
✔ Thermal Class H (180°C continuous)– Withstands soldering and reflow
✔ Natural Yellow Hue (No dyes) – UV-resistant, no color migration
✔ High Dielectric Strength– Reliable insulation for thin layers
✔ Adhesion-Ready Surface – Corona-treated (50-52 dynes/cm)
Applications
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FPC Coverlays – Flexible circuit insulation
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High-Temp Tapes – Masking, splicing, and EMI shielding
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Motor/Transformer Insulation – Anode current collectors
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Heater Elements – Backing for flexible heaters
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Printed Electronics – Substrate for conductive inks
Technical Specifications
|
Property |
Value |
|
Material |
Polyimide |
|
Application |
FPC Coverlays |
|
Thickness Range |
25μm |
|
Width |
Customizable (e.g., 500mm - 1500mm) |
|
Elongation at Break |
MD 70-90% |
|
Tensile Strength (MD) |
≥250 |
|
Tensile Strength (TD) |
≥80 |
|
Dielectric Strength |
≥ 150kV/mm |
Why Choose Our Film?
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Proven Reliability – IPC-4203/1 compliant for rigid-flex PCBs
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Process Flexibility – Compatible with laser cutting, die punching, and adhesive lamination
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Cost-Effective – Standard-grade performance without specialty additives
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Traceable Supply – Full resin batch documentation
Product pictures
Handling & Storage Instructions
To ensure the longevity and performance of our BOPP film, please adhere to the following guidelines:
- Shelf Life: 6 months from the date of manufacture.
- Storage Conditions:Store in a cool, dry place away from direct sunlight and moisture.
- Temperature Range: 10°C - 30°C.
- Humidity: Keep below 60% relative humidity.
- Handling: Avoid folding or creasing the film to prevent damage.
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Standard Formats:
Roll Dimensions: 500mm/1,000mm width x 100-300m length
Core ID: 3" / 6" (industrial cores)
Special Services:
Pre-carbonized films (pre-baked at 600°C)
Custom imidization degrees (for controlled carbonization speed
MOQ: 200kg (sample rolls available)
Request our Graphitization Process Guide with temperature profiles for different end uses!
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.