Patterson & Rothwell


In Pursuit Of The Perfect Injection Moulded Part 7 – Jetting


Jetting refers to a kind of deformation in a moulded component that can occur when there‚Äôs an initial ‘jet’ of molten material injected into the mould cavity that starts to solidify before the cavity is filled. Jetting often appears as a squiggly line in the surface of the finished component, typically leading from the initial gate of injection. This visible flow pattern can result in part weakness. Continue reading

In Pursuit Of The Perfect Injection Moulded Part 4 – Vacuum Voids

It is very easy to make expensive errors when it comes to injection moulding. Quality issues in injection-moulded products can range from minor surface defects to more serious problems that can affect the safety, performance and function of the product. They can be caused by problems related to the moulding process, material use, tooling design or a combination of all three.

This is the fourth on our series of posts where we look at a number of issues that can affect the quality of the end product and some of the common remedies. This post is about vacuum voids. Continue reading