The positive response to the first event in the spring motivated the HASCO hot runner team to stage a follow-up event of the Practice Day in the autumn. Numerous customers once again took up the invitation to visit the company headquarters in Lüdenscheid to exchange experiences and take part in a practical session, all connected with the topic of hot runner technology. In addition to a presentation of the extensive range of services, a number of interesting topics were also on the agenda.
Innovative hot runner technology
With the additively manufactured Streamrunner®, HASCO launched a new age in the world of hot runner technology. It was developed taking into account the very latest technologies for innovative solutions of the future. Compact and perfectly balanced Streamrunners® guarantee a particularly gentle passage of the melt, combined with first-class colour-change behaviour. The leak-free systems are also particularly suitable for multi-cavity systems.
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The innovative Shadowfree technology as a module element eliminates the spider lines in needle valve systems and allows a much faster colour change in the hot runner. The floating system produced by 3D printing splits the flow of material effectively into streamlined channels in order to flow evenly around the needle and brings it back together at the point at which the valve needle enters the melt channel.
Evaluation of flow analyses
In order to coordinate hot runner systems to demanding applications in the best possible way, HASCO hot runner utilises a simulation tool which is integrated directly in the design process and allows fast and automatic analysis. With this, on the basis of the component geometry and the flow properties of the plastic, the best gating position or gating geometry is determined, and complete filling of the moulded part is ensured. Apart from that, with the help of the simulation, the flow channel geometry is correspondingly defined in order to ensure as a result the best ratio between the residence time in the hot runner and the shear stress of the melt. If they wish, customers receive a detailed report with all the process-relevant results and corresponding advice.
As a guest speaker, Achim Freyer from the firm ONI-Wärmetrafo GmbH in Lindlar talked about the use of the Rhytemper cooling technology, and showed how its application can save time and money.
During the practical exercises in the service department, the participants had an opportunity to carry out small repairs themselves and to perform tests in the field of control technology by putting into operation the Primezone hot runner control unit. The practical session met with a great deal of interest, and the participants took the opportunity here to personally exchange experiences.
