Principle of a wire extrusion-coating line

Sometimes the thermoplastics, especially polyethylenes, can be cured. In this case, it is necessary to include a curing device in the line and  

These methods process liquid thermoplastics, which are often obtained by dissolving the polymer in solvents. Consequently, it is necessary to obey all health, safety and environmental precautions and regulations. 

Discontinuous coating by dipping in a bath of liquid thermoplastic is very similar to moulding by dipping as used for PVC gloves (see Section 5.1.8 above). Wire articles, for example, can be coated with PVC to protect them and obtain a softer touch. 

Continuous coating can be obtained by roll coating or spreading. There are three main versions  

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Figure 5.14 displays the principle of a wire extrusion-coating line. 

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