#flow marks

Definition A linear trace on the surface of shaped part that indicates direction in which melt flows. Fault analysis and troubleshooting 1. Poor flow of melt causes surface of plastic part to produce annual ring-shaped wave flow marks centered on the gate. Mold and nozzle temperatures can be increased separately, injection rate and filling speed can be increased, injection pressure, holding…

Injection molding experience sharing | What is flow marks?

Injection moulding process is a complex process involving plastic engineering materials, molds, injection molding machines, molding process and many other aspects. Appearance of defects in injection molded products is inevitable. Therefore, it is particularly important to find inherent mechanism of defects, location and types of defects that may be generated to guide project development. Today,…