Dynamic cavity temperature control requires no water
A joint project between three German injection molding companies has created a temperature control system in which CO2 replaces H20, according to supplier gwk. Brand-new perspectives and possibilities are offered by dynamic temperature control using CO2. This new and environment-friendly procedure provides a solution for heating and cooling of complex and thin-walled moulded parts. By using gaseous media for heating and cooling processes, soiled cooling channels can be eliminated CO2, it’s not just for cooling systems anymore.
Basically, it is true that gaseous media have the disadvantage of being poor heat carriers. This applies at least to air, which is only used for cooling processes under special circumstances. But in contrast, if the opportunities of CO2 are properly developed and implemented, it offers an interesting
alternative to conventional water temperature control.
An application for injection moulding of thick-walled optical lenses made of PMMA for LED lighting employs a waterless cyclic cavity temperature control with CO2. Mould inserts that were produced by means of the company’s integrat 4D-process provide precise and quick heat transfer in the mould , which is operated with high energy efficiency on an all-electric
injection moulding machine from Sumitomo Demag.
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