GB Standard Polyimide Black Film 25-75μm for Secure FPC Coverlay
| Thickness: | 25μm / 50μm / 75μm (±5%) | Package: | Simple/vertical/suspend/horizontal |
| Tensile Strength: | ≥200 MPa | Dielectric Strength: | ≥100 KV/mm |
| Volume Resistivity: | ≥1×10¹⁶ Ω·cm | Moisture Absorption: | <1.0% (24hrs) |
| High Light: | GB Standard polyimide film,black FPC coverlay film,25-75μm polyimide film |
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GB Standard Polyimide Black Film – Secure Coverlay for Confidential FPC Applications
Product Advantages
Engineered for maximum circuit protection, our opaque black PI film features:
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Complete Light Blocking: >99.5% opacity (L* ≤25) prevents visual tracing
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High-Temperature Endurance: 260°C glass transition temperature
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Dimensional Stability: 15-25 ppm/°C CTE minimizes thermal stress
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Safety Compliant: Halogen-free and UL 94 V-0 certified
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Bonding Flexibility: Choice of acrylic or epoxy adhesive systems
Technical Specifications
Critical Applications
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Defense Systems: Secure radar/drone circuitry
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Medical Electronics: Implantable device protection
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Premium Consumer Tech: Foldable display PCBs
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Automotive Safety: ADAS camera modules
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Industrial IoT: Tamper-proof sensor packaging
Quality Assurance
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Anti-Reverse Engineering: Defeats optical/IR imaging
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Precision Processing: Compatible with laser cutting/die punching
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Custom Options: Adjustable opacity (L*15-30) and rigidity
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Full Traceability: Complete resin-to-roll documentation
Processing Parameters
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Lamination: 160-180°C @ 1.0-1.5MPa (3-5 minutes)
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Laser Cutting: 355nm UV laser recommended
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Chemical Resistance: Stable in IPA and weak acids
Ordering Information
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Standard Formats: 500/1000mm × 100-300m rolls
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Core Options: 3" or 6" industrial cores
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Minimum Order: 200kg (samples available)
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