In plastic Industries three main processes were known to the industries (1) Extrusion (2) Blow Moulding (3) Injection Moulding. In all these processes the main draw back is the tooling or die cost of the equipment against the single piece weight of the product. For the large Hollow component the Rotational Moulding is most economical process. The basic advantages of the process are as below.• Economic tooling costs,  ...  [ Click for details ]