The defects of most injection molded parts should be caused by the mold melting and injection stage of injection molded parts, but sometimes they are also related to unreasonable design. The influencing factors include: inlet type, die core quantity, position and specification, cold/hot runner system design and product structure, etc. Therefore, in order to prevent product defects caused by mold design, plastic injection molding manufacturers should analyze the injection mold during the production process

After obtaining the test results of injection mold, operators often need to evaluate the actual situation of the mold to prevent unnecessary cost and time increase in the modification process. In most cases, in order to make up for the lack of mold design, the operator may set incorrectly without knowing it. Because the range of parameter settings required for producing qualified products is very small, once the parameter settings are wrong, the final quality of the products purchased by the injection molding manufacturer may be far beyond the allowable error range

The purpose of injection mold trial is to find the optimal process parameters and mold design. Not just to get good samples. This is crucial. Even if the materials, machine settings or environmental factors change, the stability and continuity of the mass production environment can be guaranteed