Kapton® Polyimide films


 
 
 
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Reliable insulation for extreme 
environments 

Supplied and engineered by Qnity, Kapton® polyimide film has defined the performance benchmark for high-reliability polyimide insulation for more than 60 years. When aerospace equipment, electric vehicles, and advanced electronics demand exceptional dielectric integrity, thermal stability, and long-term performance, engineers specify Kapton® polyimide film with confidence. 
 

Why engineers choose Kapton® polyimide film

Kapton® polyimide film delivers stable mechanical and electrical performance in conditions that exceed the limits of conventional polymer films. From multilayer insulation (MLI) blankets for satellites and spacecraft to dielectric substrates for flexible and rigid flex printed circuits to electrical insulation and thermal barriers in industrial systems, Kapton® polyimide film is widely specified in mission-critical systems where performance margins are tight, and material failure carries high consequences.

With an operating temperature range of –269 °C to 400 °C and dielectric strength of more than 7,000 V/mil (depending on grade), Kapton® polyimide film is built to perform in high-stakes applications. Available as thin as 4 µm and with thermal conductivity up to ~0.7 W/m·K, engineers have flexibility when incorporating Kapton® polyimide film into their designs. 


A platform of polyimide film solutions

Qnity supplies a broad portfolio of Kapton® polyimide film configurations engineered at the film level to deliver application-specific electrical, thermal, mechanical, and optical performance. This approach allows engineers to fine-tune system behavior without redesigning assemblies and move efficiently from concept through production. The Kapton® polyimide film portfolio includes:

  • General purpose and electrical grade polyimide films.
  • Flexible printed circuit (FPC) polyimide grades with enhanced dimensional stability and adhesion.
  • Heat sealable polyimide constructions for laminated assemblies.
  • Corona-resistant polyimide films for partial discharge and high-voltage environments.
  • Thermally conductive polyimide films for heat-dense electronics.
  • Electrically conductive and ESD-controlled polyimide films.
  • Optical polyimide variants including black, white, and high-transparency films.

 

Engineered confidence for high-reliability systems

With exceptional thermal endurance, dielectric performance, mechanical stability, resistance to chemicals, radiation, and moisture – and a wide breadth of engineered configurations – Kapton® polyimide film is a foundational material for applications where failure is not an option.

 

 
 
 

Polyimide Film Products

 
 
 

  • Kapton® Polyimide films

    Maintains its unique combination of mechanical properties under the harshest of conditions.

    This matte black polyimide film offers exceptional physical, chemical, and electrical properties in a broad temperature range, as well as excellent dimensional stability at high temperatures.

    This high-quality polyimide film is engineered to withstand the damaging effects of coronal partial discharge associated with high voltage AC electrical designs and equipment. Its durability and resistance make it an ideal choice for optimal protection.

    This premium polyimide film is ideal for use as a dielectric substrate in flexible printed circuits and high-density interconnects. It offers superior stability, a high modulus, and a matching coefficient of thermal expansion to copper, making it the preferred choice for very fine pitch circuitry.

    Superior quality polyimide films for use as a dielectric substrate. A perfect choice for chip on film, flexible printed circuits, high-density interconnects, and next-generation IC packaging applications. These films offer excellent CTE control, high modulus, and surface quality, making them preferred dielectric films.

    This innovative polyimide film is designed for high-reliability applications that require resistance to corona partial discharge in fast-switching AC electrical designs. With FEP fluoropolymer applied, Kapton® FCRC enables bonding in spiral-wrapped conductor insulation designs for motor and magnet wire, making it an ideal choice for various applications.

    Designed with FEP fluoropolymer on one or both sides of Kapton® HN, this polyimide film is durable, versatile and offers added chemical resistance. Its heat bonding and sealing capabilities make it ideal for a range of industrial applications.

    This polyimide film is treated on both sides and features exceptional physical, chemical, and electrical properties over a wide temperature range, similar to our general-purpose Kapton® film. Additionally, it provides superior dimensional stability and adhesion specifically designed for flex circuit manufacturers who require high-quality adhesion and low shrinkage properties.

    This polyimide film includes a white pigmented FEP fluoropolymer applied on one or both sides of Kapton® HN, providing added chemical resistance and heat bonding or sealing capabilities for a diverse range of industrial applications.

    For enhanced hydrolytic stability and superior heat bonding/sealing abilities for industrial use, choose Kapton® FWR polyimide film. This material offers a more reliable and long-lasting alternative to traditional polyimide fluoropolymer composite films.

    For applications requiring a high-performance all-polyimide film, Kapton® HN is the recommended choice due to its exceptional balance of properties over a wide temperature range. It has proven effective in extreme temperatures, ranging from -269°C to 400°C. This versatile film can be laminated, metallized, punched, formed, or coated with adhesives.

    This high-performance polyimide film is treated on both sides and features similar physical, chemical, and electrical properties as general-purpose Kapton® HN across a broad temperature range. It offers superior dimensional stability and adhesion, making it an excellent choice when low shrinkage and exceptional adhesion are critical factors.
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    The Kapton® MT polyimide film family offers an enhanced thermal conductivity of 0.45W/mK compared to traditional Kapton® films. Additionally, the Kapton® FMT film product provides the added benefits of fluoropolymer, including improved chemical resistance and heat-sealing capabilities.
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    Kapton® MT+ polyimide film family offers over 4x improved thermal conductivity with 0.8W/mK compared to traditional Kapton® films while maintaining superior mechanical, electrical, and thermal properties. Kapton® MT+ sets the industry standard for thermal conductivity performance in the polyimide category.

    This polyimide film composite with fluoropolymer is intended for severe-duty magnet wire and motor applications and provides improved resistance against scrape abrasion, as well as higher operating temperatures.

    This tough polyimide film offers an excellent balance of physical, chemical, and electrical properties at high temperatures. It is specifically engineered for use in the pressure-sensitive tape industry, providing improved characteristics for PST coaters, including better film attributes and crystal structure.
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    For heating applications requiring lightweight and uniform heating, Kapton® RS electrically conductive polyimide film offers tightly controlled 100 ohms/sq surface resistivity. The resistive property is an inherent feature of the film, providing long-lasting durability and resistance to damage from cracking or rubbing.

    This polyimide film features a proprietary fluorocarbon resin coating on one or both sides of Kapton® HN polyimide film. With excellent adhesive properties and mechanical strength at high temperatures, it outperforms Kapton® FN polyimide films.

  • Oasis® Composite Films

    Engineered with heat sealable fluoropolymer coatings on polyimide materials, this family of composite films excel in the aerospace and cable industries, adhering to rigorous quality and safety standards with ease.

    Oasis® 200TRT515 is a heat-sealable composite film designed to meet AS22759/80-96 and /180-196 lightweight wire requirements, crafted with high tensile strength polyimide and fluoropolymer materials.

    Oasis® 120TWT561 is a heat-sealable composite film crafted with high tensile strength polyimide and fluoropolymer materials, designed to meet AS22759/80-96 and /180-196 lightweight wire requirements.
 
 
 
 
 
 
 
 
 

Leverage decades of materials innovation  and application development  experience

With exceptional thermal endurance, dielectric performance, mechanical stability, and resistance to chemicals, radiation, and moisture, Kapton® polyimide film provides engineered confidence for high‑reliability systems and demanding applications.   

 

Use our interactive tool to explore the full Kapton® polyimide film portfolio, narrow options by product specs, access data sheets, and identify the right solution for your design.

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