High-performance Kaladex® PEN film for industrial applications

The Kaladex® film is a PEN (polyethylene naphthalate) solution designed to meet the most demanding industrial environments, particularly in the energy, mobility, and power electronics sectors.

In these applications, manufacturers must contend with critical constraints: rising temperatures, high electrical stresses, component miniaturisation, and increased reliability requirements. In this context, the choice of insulating materials becomes a key lever for performance and durability.

Kaladex® film represents a strategic alternative between standard PET films and high-performance materials such as polyimides, offering an excellent compromise between cost, thermal performance, and dimensional stability.

ADDEV Materials supports industrial manufacturers at every stage of the project: from selecting the right Kaladex® grade to bespoke processing (cutting, laminating, combining) in order to deliver components that can be directly integrated into your systems.

Request a quote for Kaladex® film

Kaladex

Kaladex® film for electrical insulation and high-temperature applications

The Kaladex® film is widely used in systems requiring reliable and durable electrical insulation:

  • electric motors
  • transformers
  • power systems
  • batteries and BESS
  • Industrial electronics

Thanks to its continuous operating temperature of up to 180°C and its superior rigidity, it guarantees stable performance in critical environments.

Kaladex® and Teonex® films both belong to the PEN film family, but have different positioning depending on applications.

  • Kaladex®: optimised for electrical insulation, FPC, capacitors
  • Teonex® : more oriented towards advanced technical film applications

The film Kaladex® is notable for:

  • better stiffness (+25% vs PET)
  • an excellent thermal outfit
  • a better cost/performance trade-off

What is the Kaladex® film?

The Kaladex® film is a biaxially oriented PEN (polyethylene naphthalate) polyester film, developed to offer superior performance to conventional PET films whilst remaining more accessible than polyimide films.

Its specific molecular structure gives it a unique combination of mechanical, thermal, and electrical properties, particularly suited to demanding industrial environments. Notably, it exhibits a higher glass transition temperature (121°C compared to 78°C for PET), as well as excellent dimensional stability at high temperatures.

Thanks to these characteristics, the Kaladex® film allows:

  • Better long-term temperature stability
  • a reduction in deformation and shrinkage phenomena
  • an improvement in electrical insulation performance
  • increased resistance to moisture and hydrolysis

It is thus used in critical applications such as electric motor insulation, flexible printed circuits (FPC), high-performance capacitors, and energy storage systems.

Kaladex® film supplier and bespoke conversion

ADDEV Materials supports industrial manufacturers in the selection and transformation of Kaladex® films for direct integration into their systems.

Our capabilities include:

Industrial applications of Kaladex® film

The Kaladex® film is used across many demanding industries:

Its unique combination of properties allows it to replace PET in critical applications and avoid the cost of polyimide.

How to choose the right Kaladex® film?

The choice of a Kaladex® PEN film depends on several technical factors.

Operating temperature

The choice of film depends directly on the thermal requirements.
Kaladex® can be used at temperatures of up to 180°C, making it ideal for harsh environments.

Electrical stress

For high-voltage applications, favour grades offering high dielectric strength and excellent electrical stability.

Mechanical constraints

Its high rigidity and low deformation ensure excellent performance in stressed systems.

Industrial process

Kaladex® can be processed just like PET film, making it easy to incorporate without altering existing processes.

Our technical teams will analyse your specifications to recommend the Kaladex® film best suited to your application.

Why choose ADDEV Materials as your Kaladex® film supplier?

ADDEV Materials supports manufacturers in their critical projects by combining materials expertise and processing capabilities.

Our advantages:

Kaladex® references access

Multi-market materials expertise

Integrated industrial transformation

Technical support engineer

International presence

We get involved from the design phase to secure your material choices and optimise your performance.

Need Kaladex® film for your application?

Each industrial application requires a tailored solution.

ADDEV supports you in:

  • Choosing the right Kaladex grade
  • technical optimisation
  • customisation
  • Industrialisation

Request a quote or a sample

FAQ – Film Kaladex®

This is a high-performance PEN film offering better thermal and mechanical resistance than PET.

What is the difference between Kaladex and PET?

 

Yes, in certain applications, it allows for similar performance to be achieved at a lower cost.

Electrical isolation, FPC, capacitors, batteries, power electronics.