Examples of extruder characteristics

The profile may be designed in close cooperation with the producer of the chosen thermoplastic and the specialists at the extrusion company. However, the following rules are some of the basic ones. They can be modified according to the actual problems. 

Each profile model needs its die, mandrel, calibrators and cooling fixtures whose cost is charged on each run. Consequently, the costs of the profiles depend on  

For example, the cost per volume of the same profile indexed on the cost of a PVC profile can be roughly estimated as follows, but prices can differ from these examples accor ng to the actual circumstances  

This technique is commonly used to produce films of polyolefins for packaging and other applications, competing with cast and calendered films. Tlie thickness is commonly in the 2CU500 pm range but more rarely can be in the 10-800 pm range. 

Multilayer films, generally with three layers but more rarely up to nine layers, are obtainable with a sufficient number of extruders. 

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