Troubleshooting

Optimal process settings are critical to the ultimate productivity level, part quality and final cost of injection moulding

Injection Moulding Troubleshooting Guide

Please note
The Injection Moulding Troubleshooting Guide covers some of the common problems encountered with this process, but is by no means complete. Conditions are variable and include: machine used, machine setup, mould type and complexity, materials and manufacturing environment. Specific conditions cannot be anticipated. If problems persist, please contact HMC Polymers Technical Service for direct consultation and advice.

The following technical information is provided for convenience only, without any warranty or guarantee of any kind. Users are encouraged to verify all information provided independently to their reasonable satisfaction. This includes any technical information, specific recommendations, testing, or analysis, including, without limitation, any information regarding moulding processes, or the selection of a product for a specific use.

Short shots
Short shots appear when an injection mould has not been properly filled. As a result, parts appear incomplete. This effect usually appears far from the gate, especially where long flow distances are involved, thin walls (or a combination), or thin ribs to be filled by the polymer.

The effect of short shots may also appear in other areas of the moulding and often the reason can be traced to gate design.
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