Injection Moulding Asia

Faster cycles with cooling technology

With Ritemp, heat is extracted from the mould by converting it to latent heat of vapourisation. The resultant vapour rises to the top of the mould where it is condensed by simple heat exchangers. For every 1 g of water, latent heat absorbs 540 cal/°C. With conventional turbulent flow, 1 g of water only absorbs 1 cal/°C.

At the NPE show in April, a four-cavity mould manufactured by Canadian company StackTeck will be running in a Sumitomo-Demag machine making a 60-mm spout in 7.2 seconds, a 39% improvement over a conventionally cooled mould. The required cooling to the entire mould will be 18 GPM, a 55% improvement over a conventionally cooled mould. The cell will show, for the first time, both a Ritemp hot-half and Ritemp cold half.