THERMEX® denotes an ADDEV Materials range of high-temperature polyester films, modified PET, and technical laminates designed for the electrical insulation of electrotechnical systems subjected to high thermal, dielectric, and mechanical stresses. These materials are used in electric motors, transformers, coil windings, BESS, battery systems, and power electronics.
ADDEV Materials transforms THERMEX® into formats suitable for integration constraints: sheets, rolls, cut parts, interleaves, notch bases, winding insulation, and multi-layer laminates. The added value lies in the choice of insulating material, lamination, and custom cutting.
THERMEX® is a range of high-temperature polyester films and technical laminates for insulation applications in low, medium and high voltage equipment. The material is selected when the aim is to ensure a reliable dielectric barrier while maintaining good mechanical and thermal performance.
A high-temperature polyester film is used as a separator, interliner, slot liner, or protective layer in a winding. A technical laminate combines several layers — film, polyester film, aramid, or other insulating substrates — to achieve a compromise between dielectric strength, mechanical resistance, thermal stability, and formability.
THERMEX® meets the needs of designers of electric motors, transformers, power systems and industrial equipment where insulation stability determines the system's lifespan.
THERMEX® is used when insulation needs to withstand electrical, thermal, mechanical, and process stresses simultaneously. The range allows the insulating structure to be adapted according to voltage, thermal class, component geometry, and integration process.
Dielectric insulation for windings, motors and transformers
Multi-layer technical laminates according to thermal stress
Good impregnability with varnishes and electrical resins
Custom-cut formats for series integration
ADDEV Materials offers several THERMEX® configurations depending on the desired function: electrical insulation, thermal resistance, mechanical strength, impregnability, or integration into an electrotechnical system.
| THERMEX® Range | Structure | Main function | Types of applications |
|---|---|---|---|
| THERMEX® Film | High-temperature polyester film | Dielectric isolation and separation | Transformers, windings, electric motors |
| THERMEX® Laminates | Multi-layer laminates | Enhanced insulation and mechanical strength | Power electronics, traction systems, BESS |
| THERMEX® Composite | Paper + film technique | Dielectric, thermal and mechanical compromise | Notch funds, dividers, insulating separators |
| THERMEX® Converted Parts | Cut or formed parts | Direct integration into the client system | Motors, transformers, electrical modules |
| THERMEX® Custom Laminates | Customer-specific structure | Performance adjusted according to specifications | High-stress applications and industrial prototypes |
The choice of a THERMEX® depends on the operating voltage, the target thermal class, the expected rigidity, and the impregnation and format for integration into the winding or module.
THERMEX® performance depends on the film or laminated structure. The parameters below guide the selection of an electrical insulation during the design or industrialisation phase.
THERMEX® materials are used in Power & Mobility systems when electrical insulation needs to remain reliable despite thermal, mechanical, and process stresses.
ADDEV Materials transforms THERMEX® into ready-to-integrate formats for motors, transformers, electrical modules, and power systems. Converting optimises the geometry, tolerances, stacking, and repeatability of insulating parts.
Choosing THERMEX® from ADDEV Materials guarantees the selection of materials and the industrial integration of electrical insulation:
Are you looking for a high-temperature polyester film, a technical laminate, or a custom-cut insulating part for a motor, transformer or power system? ADDEV Materials analyses the voltage, temperature, process and mechanical constraints to recommend the appropriate THERMEX® configuration.
THERMEX® is an ADDEV Materials range of high-temperature polyester films, modified PET and technical laminates. It is used to insulate, separate and protect electrotechnical components in motors, transformers, windings and power systems.
A high-temperature polyester film primarily serves a dielectric separation function. A technical laminate combines several layers to add mechanical, thermal, or process robustness properties.
THERMEX® is used for electric motors, transformers, coils, BESS systems, rail equipment, power electronics, and industrial systems requiring reliable insulation.
An insulating laminate reinforces mechanical strength, improves dimensional stability, and adapts thermal performance. It is recommended when the film alone is insufficient for the system's constraints.
Yes. THERMEX® insulating and laminated films can be selected to be compatible with the varnishes and impregnating resins used in windings, motors and transformers.
The choice depends on the voltage, temperature, winding geometry, impregnation process, and mechanical stress. ADDEV recommends first defining the thermal class and integration format: slot liner, interlayer, sheet, or cut part.
Yes. ADDEV Materials transforms THERMEX® into cut parts, slitted rolls, sheets, interlayers, notch bases, and kits ready for integration into the production line.
Français Français 
English (UK)
Deutsch
Polski
العربية
