Electrification in industry and private life will increase massively in the coming years. Wind and solar power will replace many other energy sources. In addition, electrical devices and equipment will have to fulfill more and more functions and have a continuously increasing energy density in their housings and control cabinets. As a result, reliable electrical insulation and thermal management are becoming increasingly important. CMC Klebetechnik uses its six decades of experience to always provide developers and manufacturers with the right material.
In order to be compact and still be able to achieve high performance, the distances in modern electronics are becoming smaller and smaller. This increases the pressure on the insulation used, which must have high dielectric strength and good temperature resistance. In many cases, ventilation openings are also required, for example, to prevent heat build-up in the electronics. It is also often necessary to insulate entire housing parts, which then results in a die-cut part. Printing with warning notices, installation instructions or company logos is also possible.
In most cases, punched parts made of insulating films primarily ensure the operational safety of an appliance or system. In addition to the risk of a person being harmed by an unprotected, high voltage, a functional failure or even a fire must also be strictly avoided. However, the longevity of electrical and electronic equipment can also be significantly influenced by suitable insulation materials. Improved heat dissipation, for example, massively reduces thermal ageing. In addition, durable insulation materials still have good insulation values even after many thousands of hours in operation. They therefore also provide reliable long-term protection against transient overvoltages. Depending on the application, CMC Klebetechnik can select the right insulation material from a wide range.
Requirements from standards or from the end customer often limit the selection of available insulation films. CMC Klebetechnik is then happy to help define alternative products that match the desired function. Thanks to our own coating technology, a variety of punching and cutting systems and the option of printing punched parts, seamless integration into the customer's system is possible in almost all cases.
Application technology
If you have any questions, please contact:
Gerald Friederici
Phone: +49 6233 872 356
E-Mail: friederici (at) cmc.de
Further information on our electrical insulating tapes can be found here:
Polypropylene films, polyester films and polycarbonate films have excellent electrical insulation properties. The individual film types differ in their special properties, which makes them suitable for a very wide range of applications. All films have excellent dielectric strength and good temperature resistance.
In combination with laminates made of copper foils or ferromagnetically effective foils, EMC requirements (Shields) and electrical insulation can be combined. Together with thermally conductive insulation foils, active heat management is also possible (heat spreader).
Overall, insulation foils and insulation die-cut parts from CMC Klebetechnik help to significantly increase the reliability and service life of electrical devices.
The plastic polyester (PET) has been a popular insulation material in the electrical industry for a very long time. Polyester combines a low price with excellent physical and chemical properties. The plastic can be used at continuous temperatures of 130°C and can be exposed to short-term temperatures of up to 200°C (260°C melting temperature). Polyesters withstand electrical influences such as "tracking" or high switching frequencies well. The chemical resistance to many common chemicals in the electrical/electronic field is also excellent. Polyester films are available in thicknesses ranging from a few 1/100 mm to 0.5 mm.
Polycarbonate film
The plastic polycarbonate (PC) has also been used in electronics for a very long time, as the thermoplastic can also be used well as a solid plastic component. Polycarbonate has good dielectric strength and can be used up to around 140°C, whereby it shrinks very little (cast film). As the material is thermoplastic, polycarbonate films can be thermoformed. As a printable plastic, PC is also very suitable for labeling tasks. In a special flame-retardant version, the material is ideal for use in electronic assemblies. Polycarbonate films also have very good resistance to the formation of leakage currents.
The plastic polypropylene (PP) in the Formex® version combines a number of outstanding properties in one product. Films made of Formex® have a high dielectric strength, good chemical resistance, UL94 V0 classification and very good resistance to the formation of creepage distances (tracking, treeing). Polypropylene has a low dissipation factor at high frequencies and can be subjected to very good mechanical bending cycles. As a favorable insulation material, it can be used permanently up to 115°C. The onset of softening limits the short-term load capacity to 125°C. The robust polypropylene in flame-retardant design is very often used as an electrical barrier in metal housings, e.g. battery boxes. The film is easy to die-cut and print.
All products can be supplied as specifically cut rolls, as adhesive film and as die-cut parts. Laminates are also possible in order to achieve further functionalization (e.g. EMC protection).
Protect electronics - maintain safety - increase service life