ELECTRICAL INSULATING FILMS
Our portfolio of electrical insulation comprises:
FORMEX™ (PP)
Properties and advantages in brief
- High dielectric strength of 103 kV/mm
- Flammability class UL 94-V0
- Extremely good long-term and chemical stability
- Non-hygroscopic (water absorption 0,06%)
- Operating range up to 115 °C
- Can be folded repeatedly without cracking or splitting
Typical applications: power modules and power converters.
MYLAR A™ (PETP)
Available in diverse types
Properties and advantages in brief:
- Very high dielectric strength of 280 kV/mm
- Chemical resistance
- Low dielectric constant
- Very good mechanical stability through high tensile and tear strength
- Very good processability
- Top price performance ratio
- Available as high temperature-resistant composites and non-woven Mylar
KAPTON™ (PI)
Available in diverse types (e.g. KAPTON™ HN)
Properties and advantages in brief:
- Very high dielectric strength of 250 kV/mm
- Operating range up to 180 °C
- Flammability class UL VO
- Chemical resistance
- Low dielectric constant
- Very good mechanical stability through high tensile and tear strength
- Very good processability
Kapton polyimide films are also available with thermally conductive silicone coating — see thermally conductive foils.
LEXAN™ (PC)
Properties and advantages in brief:
- Very high dielectric strength of 59 kV/mm
- Very good mechanical stability through high tensile and tear strength
- Very good processability
VALOX™ (PBT)
Properties and advantages in brief:
- Very high dielectric strengh of 195 kV/mm
- Good temperature stability
- Good processability
NOMEX™ (Aramid-Papier)
Properties and advantages in brief:
- Insulating class H (up to 180°C)
- Calandered or uncalandered aramide paper
- Low flammability
- Good electrical break-down resistance
- Good material life at low temperatures
- Good resistance to acids and alkalis
Typical applications: transformers, motors and e-mobility drive systems.
Laminated Fiber sheets
Properties and advantages in brief:
- Made from unbleached sulphate cellulose
- Insulation class A (up to 105°C)
- Best price – performance ratio
- High flexibility
- High tensile and compression strength
- Compatible with dip and pouring resins
- Easily impregnated
PE-Foils
PTFE Foils (e.g. Teflon™)
PAR-Foils (e.g. Aryphan™)
Flexible multilayer insulating foils (e.g. Evitherm™, Trivolton™, Triflexil™)
and many other
Available as:
- Sheet or roll
- Kiss cut parts on roll
- Die cut parts
- With or without adhesiveness
- Multidimensionally structured and formed
CONTACT
Contact us!
HALA Dichtungen und Isolierteile GmbH & Co. KG
Blumenstraße 12
D-73779 Deizisau
Telefon: +49-(0)7153-99350-0
Telefax: +49-(0)7153-99350-99
E-Mail: info[at]hala-tec.de
FAQ
Electrical insulating films are thin polymer films with high dielectric strength used to electrically isolate voltage-carrying components from heat sinks, cooling plates and housings in power electronics. They are essential in power modules, inverters, transformers, motors and e-mobility systems.
Formex (PP) offers 103 kV/mm dielectric strength with excellent long-term stability and is non-hygroscopic — ideal for demanding industrial environments. Mylar A (PETP) achieves the highest dielectric strength of 280 kV/mm with outstanding mechanical stability and chemical resistance. Kapton (polyimide) operates up to 180°C with 250 kV/mm and is chemically resistant — widely used in aerospace and high-temperature power electronics. Nomex is an aramid paper with insulation class H (up to 180°C), low flammability and good resistance to acids and alkalis — the standard choice for transformers and motors.
Electrical insulating films prioritise dielectric strength and breakdown resistance. Thermally conductive silicone foils combine electrical insulation with active thermal conduction through thermally conductive fillers — typically up to 8 W/mK. For applications requiring both properties, coated insulation films such as polyimide with silicone coating or phase change materials on polyimide carrier are the right choice.
HALA’s portfolio covers dielectric strengths from 59 kV/mm (Lexan polycarbonate) up to 280 kV/mm (Mylar A PETP). Kapton polyimide achieves 250 kV/mm, Formex PP 103 kV/mm and Valox PBT 195 kV/mm. The right material depends on the operating voltage, temperature range and mechanical requirements of the application.
Yes. HALA supplies all electrical insulating films as sheets, rolls, loose die-cut parts and kiss-cut parts on rolls — with or without adhesive coating, single-layer or as laminated composites. Custom shapes are produced in HALA’s own production facility. Request a free sample or expert consultation.
