In Plastics injection moulded parts, a weld line is a visible result of a line or blemish on the part by the merger of more
than one stream of plastics flow during processing. It is caused due to the knitting region of two upcoming flow fronts of
plastics melt. These lines are usually formed due to obstructions to flow or due to the provision of more than one entry
point of plastics melt into the component. The existence of weld lines in plastics parts is not only a surface imperfection,
but it also impacts the strength of the part by way of structural weakness. The occurrence of weld lines in the plastics
products has made the process of injection moulding a complex one. The major possible causes for the occurrence can be
traced to the design of plastics parts geometry and the injection moulding process parameters used for manufacturing the
product. In this study, a standard specimen of the plastics part with the unique requirements like the entry of melt defined
as a gate and the obstructions to flow in ter