In the injection molding process, the period of filling cold runner (if it exists) and cavity is called injection time (purple line in time pressure diagram below).
A slow injection time has the advantage to have less shear and gentler treated material.
However, there is the risk of high injection pressure or unfilled parts due to intense cooling of the melt because of a low injection time.

Injection Time in Plastic Industry


Injection Molding Process: The injection time is the time needed to reach 100 % of part filling.



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This glossary of plastic industry is provided by PLEXPERT Canada Inc.
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