Moulded Part Design for the Gas Injection Technique

摘要

In gas assisted injection moulding the melt front advancement has a considerable effect on the gas penetration. The evaluation of an appropriate melt filling is an important step to avoid instabilities in the process sequence. Taking a sample moulded part a procedure is presented that enables the part designer to evaluate required melt and gas injection points according to the gas injection technique. Using finite element simulations different calculations for the melt front advancement lead to the correct gate location in correspondence with the gas nozzle and the part geometry.