Insulating And Sheathing Materials

When designing the best possible cable for the customer, the choice of the right insulation and sheathing material plays a decisive key role.

Thus, in addition to the requirements for the cable itself (required functions and service life), external influences such as ambient temperatures, temperature fluctuations, UV radiation, mechanical stresses (e.g. due to movement, bending, friction, tension, torsion), chemical influences (contact with oils, greases, chemicals) and the mutual influence of the materials on each other must also be taken into account. Added to this are requirements for environmental compatibility (recyclability), fire behavior (functional integrity in the event of fire, fire continuation, smoke gas development) and, of course, costs.

In practice, it is almost always a combination of different criteria that influences the choice of material.

The Course of Time

Time heals all wounds - unfortunately, this does not apply to plastics. Here, aging processes take place continuously, which are accelerated, in some cases significantly, by the effects of the previously mentioned influences. Continuously changing stresses lead to material fatigue, the materials become brittle, porous or deform - which can lead to premature failure of the cable and thus to failure of the entire system.

The Combination Matters

HEW-KABEL has a wide range of different plastics that can be modified characteristically and optimally adapted to the intended use by adding special additives or by using special manufacturing processes.

Our Portfolio Includes the Following Types of Plastics:


Fluoropolymers are long-chain polymers in which a large part or even all of the hydrogens contained are usually replaced by fluorine. Fluorine atoms have the highest electro negativity, which means that the carbon-fluorine compound has a very high binding energy.

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Elastomers are long-chain polymers that have thermoplastic properties in the uncrosslinked state. They soften with increasing temperature and are thus extrudable. Only through vulcanization (crosslinking) a narrow- or wide-meshed structure is formed.

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Silicones respectively silicone rubbers belong to the class of elastomers, but differ in the fact that the main chain is not composed of carbon compounds, but of alternating silicium and oxygen atoms. The silicium atoms carry organic substituents, preferably methyl groups.

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Thermoplastic Elastomers

Thermoplastic elastomers (TPE) combine the properties of thermoplastics and elastomers. For example, TPE exhibits elastic behavior at room temperature, but can be shaped plastically when heat is applied.

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High-performance Thermoplastics

High-performance thermoplastics (special thermoplastics) differ from "simple plastics" in their complex polymer structure. This consists of aromatic structures and additional, functional groups, such as ether or imide groups.

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