Duncan Webster

Duncan Webster

Kistler Instruments
Applications Engineer

Why we invited Duncan

With over 25 years practical experience within the plastics Industry, Duncan Webster has in-depth knowledge of a wide range of materials and processes from short run prototyping through to high volume automated production. Since 2008, he has provided technical support for Kistler Instruments’ injection moulding cavity pressure monitoring systems from pre-installation specification and initial installation to training, operational advice and ongoing support.

Kistler Instruments’ cavity pressure monitoring systems are widely used by injection moulders supplying industry sectors, from aerospace and automotive to medical device manufacturers, where quality is critical.

 

Where you can see Duncan

28 Sep 2017
Time:  14:00
Introducing Stage
Cavity Pressure Monitoring for Zero Defect Injection Moulding - Duncan Webster, Applications Engineer - Kistler Instruments

Why you should attend this presentation

Cavity pressure monitoring is a well proven technique for identifying cavity fill problems in real time so that out of specification products can be identified and rejected and moulds protected from damage due to overfilling. This paper describes the latest systems that use cavity pressure profiles to control the injection process to minimise incorrect cavity filling and so reduce rejects. These systems control the injection moulding process and balance the hot runner system, irrespective of the machines, moulds and peripherals used.

Cavity pressure monitoring allows process fluctuations to be corrected during the moulding phase in real-time as the process control system optimizes the switchover point for all the cavities, resulting in balanced injection behaviour across the entire production sequence. The system synchronizes the pressure profiles by individually controlling the nozzle temperatures on the hot runner, stabilizing the process by adjusting for batch fluctuations and other process conditions.

The new approach to production focuses on consistent digitization leading to enhanced product quality and increased cost-efficiency. Moulders using these new techniques are ideally placed to meet the requirements for digital networking demands of Industry 4.0.

This key advantage, compared with systems based on melt front detection, makes the process control more accurate and provides additional benefits for the user.

Duncan Webster
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