u/Stickmanjoe14

Hi all,

I'm a manufacturing engineer working with an insert moulded catheter hub. I'm trying to get to the bottom of an issue where catheter shaft is pushed out during injection. The catheter shaft is loaded onto a core pin and grilamid tr 55 lx is moulded around this shaft to form the catheter hub. This is run on an arburg all-rounder 275V.

We've seen a significant increase in scrap where the shaft is blown out of position during moulding, particularly in the first few runs of the day. I'm interested in whether anyone has experience with this type of process or any advice. I'm quite new to injection moulding so I apologise if I've not provided enough information here, please ask and I'll provide more if needs be. Thank you!