Products such as lighting fixtures, optical lenses, parts for the aircraft, telecommunications, etc. industries are obtained via polycarbonate injection moulding. To obtain the exact colours and shades needed, it is important to achieve the correct wall thickness of ready parts. Higher thickness results in darker colours, and vice versa. Other important applications where parts manufactured by polycarbonate injection moulding are used involve outdoor uses in which it is important to have UV radiation resistant items. There are UV resistant polycarbonate grades which match the requirements for such uses.
Polycarbonate injection moulding is carried out by machines which have open nozzles with a large cross-section. The nozzles used are of the free flow type. In the event of leakage of the melted substance, the screw can be tightened to remove the pressure on the melt. The temperature during polycarbonate injection moulding should be as high as possible, because that helps to obtain ready parts with very low inherent stress level. That is especially important when parts should be suited for superheated steam sterilisation.
Lexan is a brand name of Polycarbonate of which we injection mould.