The Importance of Consistent Fill Time

摘要

To make identical parts,you need to keep fill time constant.In part one we covered the why.Here's the how.Last month,in the first part of this two-part installment,we focused on the reasons viscosity can change during injection molding.Because viscosity is a variable,keeping fill time constant minimizes the influence of these variations and provides a more stable process and more consistent parts.If driven to the same shear rate,viscosity variations can be minimized to provide a more consistent process.Run to run,shot to shot,summer to winter,and machine to machine—keep fill time the same and your process will be more consistent.