Complete Guide to Sizing Injection Molding Machines: Sizing the Injection Unit

In this video, titled The Complete Guide to Sizing Injection Molding Machines – Part 3: Sizing the Injection Unit, Jason Holberg, Sales Manager at Absolute Haitan, delves into the often-overlooked considerations in selecting the right injection unit for injection molding machines. He covers critical aspects like material types, shot size, residence time, injection pressure, and screw recovery time. Jason addresses common misunderstandings, such as assuming the part weight directly translates to the required shot size, and introduces rules of thumb for maximum and minimum shot capacities. Using practical examples, he explains how volumetric capacity and melt factors affect performance, emphasizing the importance of adjusting calculations for specific materials like polypropylene versus polystyrene. This video is ideal for operators and engineers looking to optimize their injection molding setups with accurate specifications and enhanced productivity.