High-Performance PEEK Film Acoustic Diaphragm Film, Precision Custom Die-Cutting & Adhesive Services

PEEK (Polyetheretherketone) Film represents the pinnacle of high-performance thermoplastic engineering. Recognized by its distinct amber or semi-transparent appearance, PEEK film excels in extreme operating environments where conventional industrial polymers like polyimide (PI) or polyester (PET) reach their limits. It offers a rare combination of exceptional thermal stability (melting point of approx. 343°C), outstanding wear resistance, near-universal chemical inertness, and high dielectric protection.

As an experienced industrial converter, we offer complete precision processing for PEEK films. From ultra-thin Acoustic Diaphragm Grades (down to 5μm) to thick structural sheets, we provide specialized services including Single/Double-sided Corona Surface Treatment (for improved bonding), Custom Adhesive Lamination (3M, Nitto, Tesa), Slitting, and Precision Custom Die-Cutting to deliver tailored, plug-and-play components for your assembly line.

Key Material Features & Advantages 

• Extreme Temperature Endurance: Sustains a continuous working temperature of up to 240°C (464°F) and handles short-term thermal exposure up to 300°C with exceptional dimensional stability.

• Unmatched Chemical & Hydrolysis Resistance: Immune to almost all organic and inorganic chemicals, solvents, acids, and hot pressurized steam (fully hydrolysis resistant).

• Superb Acoustic Performance: Excellent mechanical damping and low density make it the premium choice for high-fidelity micro-speakers, headphone diaphragms, and microphone elements, delivering crystal-clear high frequencies and rich bass.

• Premium Electrical & Dielectric Properties: Displays high dielectric strength (≥ 180 kV/mm), low loss factor, and exceptional electrical insulation reliability across a broad frequency and temperature spectrum.

• Inherent Flame Retardancy & Bio-compatibility: Boasts a natural UL94 V-0 rating with extremely low smoke/toxic gas emissions. It is inherently non-toxic and meets strict medical/FDA bio-compatibility standards for surgical contact.

Typical Applications

• Acoustics & Audio Hardware: Premium earphone diaphragm sheets, smartphone micro-speakers, automotive high-frequency dome tweeters, and professional stage microphone elements.

• Automotive & Aerospace Systems: Substrates for high-reliability flexible printed circuits (FPCs) in engine bays, high-temperature insulating washers, fuel system seals, and dry-running wear pads.

• Electronics & Semiconductor Manufacturing: Thermal insulation barrier wraps, high-frequency antenna substrates, and silicon wafer processing cassette liners.

• Medical Devices: Sterilizable surgical instrument insulators, dental component protective liners, and implantable flexible barrier sheets.

Technical Data Sheet

Standard thickness: 5μm to 1000μm (Custom thickness configuration available) | Color Options: Amber/Natural, Black