Black Polyimide (PI) Film – High-Temperature Light-Blocking & Insulation Material

Black Polyimide (PI) Film – High-Temperature Light-Blocking & Insulation Material

Product Overview
      Black Polyimide (PI) Film is a high-performance engineered film made from modified polyimide resin with uniform black pigmentation. It combines exceptional thermal stability, superior electrical insulation, outstanding mechanical strength, and full light-blocking performance in one material. Designed for high-reliability applications in electronics, aerospace, automotive, and optical industries, it serves as the premium choice for high-temperature insulation, optical shielding, and precision light blocking.

Key Features

• Ultra-High Temperature Resistance                                                                                                                                                  Continuous service temperature: -269°C to 400°C; short-term heat resistance up to 500°C, no melting, no deformation, stable performance in soldering and extreme thermal environments
• Total Light Blocking & Low Reflectivity                                                                                                                                            Light transmittance ≤0.1%; matte/gloss surface available; effectively blocks visible light, UV, and near-infrared, suppresses stray light, and enhances imaging and display contrast.
• Premium Electrical Insulation                                                                                                                                                             High breakdown voltage, low dielectric loss, excellent corona resistance; ideal for high-voltage, high-frequency, and high-temperature circuits.
• Extreme Dimensional Stability                                                                                                                                                            Ultra-low thermal expansion coefficient; minimal shrinkage and warpage under high temperature and humidity; supports precision die-cutting, laminating, and bonding.
• High Mechanical Toughness                                                                                                                                                              High tensile strength, tear resistance, and flex endurance; performs reliably in flexible circuits, foldable devices, and dynamic components. 
• Flame Retardant & Eco-Friendly                                                                                                                                                       UL94 V-0 rated, halogen-free, non-toxic, compliant with RoHS, REACH, and global environmental standards.
• Excellent Chemical & Weather Resistance                                                                                                                                         Resistant to solvents, acids, alkalis, UV radiation, and atomic oxygen; long service life in harsh outdoor and aerospace environments.

Standard Specifications

• Thickness: 12.5μm – 125μm
• Color: Uniform matte black / gloss black
• Width: Customizable (standard 500mm / 1000mm)
• Core: 3-inch / 6-inch plastic core
• Surface: Single-sided matte, double-sided matte, double-sided gloss
• Customization: Die-cut parts, adhesive coating, antistatic treatment, thermal conductive grade

Typical Applications

• Flexible Printed Circuits (FPC)                                                                                                                                       Coverlay films, stiffeners, shielding layers for smartphones, cameras, foldable screens, and high-density circuits.
• Optical & Imaging Systems                                                                                                                                                   Light baffles for lenses, CMOS/CCD sensor shielding, backlight unit components, anti-reflection parts.
• Electrical & Thermal Insulation                                                                                                                                     Insulation sheets for lithium batteries, motor slot liners, transformer insulation, automotive wiring harness protection.
• Aerospace & Military                                                                                                                                                            Satellite thermal control films, radiation-resistant insulation, radar high-frequency insulation components.
• High-Temperature Processing                                                                                                                                               SMT reflow/wave soldering masking, gold finger protection, high-temperature tape substrate.
• Precision Industrial Parts                                                                                                                                                       EMI shielding gaskets, heat insulation spacers, precision washers, ESD-safe components.

Why Choose Our Black PI Film?

1. Consistent blackness and opacity without color fading or chipping.
2. Stable performance under extreme temperatures and harsh conditions.
3. High-precision coating and slitting for clean edges and tight tolerances.
4. Full compliance with international safety and environmental standards.
5. Customizable solutions for thickness, width, surface, and functional treatments.

Compliance & Certifications