Schematic principle of blow-moulding process

Among the plastics suitable for blow moulding are polyethylenes, polypropylenes, polyacrylonitrile, thermoplastic polyesters, polycarbonates... 

The containers often have capacities in the range from 250 cm to 25 litres and can  

The output can range from, for example, 20 units per hour to more than 5000 units per hour. 

Compression moulding of thermoplastics comprises at least two steps  

This process is only used for special cases because of the long time needed to heat and then cool the thermoplastic parts before demoulding. 

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