Page 336 - Injection Molding Advanced Troubleshooting Guide

332 34 Jetting

Figure 34.2 Jetting development

„ „34.2„ Jetting Troubleshooting Chart

Table 34.1 shows the jetting troubleshooting chart.

Table 34.1 Jetting Troubleshooting Chart
Molding Process Mold Machine Material
high fill velocity gate location machine performance
gate size
gate land length

„ „34.3„ Jetting Troubleshooting

Jetting is a phenomenon that is linked to how the plastic is flowing through a gate.
The plastic is not adhering to the mold walls but rather squirts uncontrollably
through the mold. It will snake through the cavity leaving behind a worm-like ap-
pearance of gloss variation on the part surface.