To compensate the shrinkage, it is necessary to inject more material after 100% filling of the part.
The length of packing time (green line in the time-pressure diagram below) must be selected in such a way that the gate freeze time is reached.
A short packing time leads to a higher risk of sink marks and voids.

Packing Time in Plastic Industry

Injection Molding Process: The packing time is the time between 100% filling and gate freeze time.

Related Topics:

This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Password Strength Very Weak
Lost your password? Please enter your username or email address. You will receive a link to create a new password via email.
We do not share your personal details with anyone.