Hefei Guofeng Advanced Basic Materials Technology Co., Ltd.
| Payment Terms | L/C,T/T |
| Supply Ability | Negotiation |
| Delivery Time | Negotiation |
| Packaging Details | Standard Packing |
| Glass Transition Temperature | 300-400°C |
| Electrical Insulation | Excellent |
| Chemical Resistance | Excellent |
| Thickness | 0.5-5 microns |
| Transparency | Clear |
| Elongation at Break | 50-100% |
| UV Resistance | Good |
| Tensile Strength | 100-200 MPa |
| Flexibility | High |
| Adhesion | Strong |
| Dielectric Constant | 3.5-4.5 |
| Brand Name | Guofeng |
| Model Number | 7.5um |
| Certification | UL ISO ROHS |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C,T/T | Supply Ability | Negotiation |
| Delivery Time | Negotiation | Packaging Details | Standard Packing |
| Glass Transition Temperature | 300-400°C | Electrical Insulation | Excellent |
| Chemical Resistance | Excellent | Thickness | 0.5-5 microns |
| Transparency | Clear | Elongation at Break | 50-100% |
| UV Resistance | Good | Tensile Strength | 100-200 MPa |
| Flexibility | High | Adhesion | Strong |
| Dielectric Constant | 3.5-4.5 | Brand Name | Guofeng |
| Model Number | 7.5um | Certification | UL ISO ROHS |
| Place of Origin | China | ||
| High Light | Conductive substrate film ，PI substrate film ，Conductive kapton polyimide substrate | ||
The GL-Series represents a technological advancement in opaque polyimide films, specifically engineered to deliver 40% superior thermal stability (sustaining 500°C short-term exposure) and 35% enhanced dimensional consistency compared to conventional yellow polyimide films. With its optimized opaque black formulation, the film provides complete light-blocking protection (>99.9% UV and visible light opacity) while maintaining exceptional dielectric strength (≥7.2 kV/mm), making it ideal for light-sensitive electronic components and advanced packaging applications.
Advanced Thermal Performance
Continuous operation at 300°C with 500°C peak temperature resistance
Thermal degradation temperature exceeding 550°C
Near-zero thermal shrinkage (<0.1%) after multiple reflow cycles
Superior Electrical Protection
Volume resistivity >10¹⁷ Ω·cm at 200°C
Dielectric constant 3.4 ± 0.05 (1 kHz to 1 MHz)
Corona resistance >500 hours at 2.5 kV
Enhanced Mechanical Properties
Tensile strength >280 MPa with elongation >80%
Tear resistance 50% higher than standard polyimide films
Maintains flexibility through 200,000+ bending cycles
Complete Light Protection
99.98% opacity across 200-800 nm wavelength range
UV stability with <2% transmittance change after 1000 hours UV exposure
No light leakage even at thicknesses down to 5μm
Advanced Semiconductor Packaging
Light barrier for image sensor and optoelectronic device packaging
Protection layer for light-sensitive MEMS and semiconductor devices
Interposer and substrate isolation in 2.5D/3D packaging
High-Reliability Electronics
Flexible circuit coverlay for military and aerospace applications
Insulation layer in automotive power modules and battery systems
Barrier material in medical imaging and diagnostic equipment
Specialized Industrial Applications
Light blocking layers in optical equipment and instruments
High-temperature masking for precision manufacturing processes
Thermal and light barrier in energy storage systems
The GL-Series sets a new standard for opaque polyimide films by combining complete light blocking capability with exceptional thermal and electrical performance. Unlike conventional black polyimide films that sacrifice electrical properties for opacity, our advanced formulation maintains excellent dielectric characteristics while providing absolute light protection. The film's enhanced mechanical durability and thermal stability make it suitable for the most demanding applications where both performance and reliability are critical.
To ensure the longevity and performance of our Polyimide film, please adhere to the following guidelines:
· Store in a cool, dry place away from direct sunlight will be necessary.
· Avoid exposure to high humidity or extreme temperature fluctuations.
Company Details
Business Type:
Manufacturer
Year Established:
2021
Total Annual:
28000-50000
Employee Number:
300~400
Ecer Certification：
Verified Supplier
HeFei GuoFeng Advanced Basic Materials Technology Co Anhui Guofeng New Materials Co., Ltd., a state-owned listed new materials enterprise under Hefei Municipal Government, has been deeply committed to five major industries since its establishment: polymer functional film mater... HeFei GuoFeng Advanced Basic Materials Technology Co Anhui Guofeng New Materials Co., Ltd., a state-owned listed new materials enterprise under Hefei Municipal Government, has been deeply committed to five major industries since its establishment: polymer functional film mater...
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