PETpla.net Insider 12 / 2013
CAPPING / CLOSURES 32 PET planet insider Vol. 14 No. 12/13 www.petpla.net machines and moulds for compression moulding, leaving a large number of manufacturers of moulds, hot runners and injection moulding machines fight- ing for the remaining 45%. New closures have been deve- loped, mostly one-piece closures. Two-piece caps, an exclusive domain of compression moulding, have declined in favour of one-piece caps. Both process technologies in the com- petitive environment combined in the one-piece caps. However, the market shares of compression versus injec- tion moulding have hardly changed. Vezio Bernardi, Beverage General Manager, Sacmi Vezio Bernardi quote: “Our history of compression moulding goes back to 1994, when we developed the first compression machine for caps & closures based on Sacmi’s ceramic processing, which was, at the time, Sacmi’s core busi- ness. Since then, we have worked on the machine, on efficiency, energy consumption, productivity and speed. And of course we have responded to customer requests and requirements, tailoring the compression mould- ing machine and systems to them. The result is the product that we offer today, which enjoys a worldwide repu- tation.” Products Range of five models from 24 cavi- ties to 80 cavities. “To date, we have manufactured 1,300 compression moulding machines and 500 different clo- sures design for our machines, 200 of which are still operational on the market”. Exhibit at K 2013 CCM48S, 48 cavities, 2,000 caps/min Standard beverage closure AB29W for still water, 1.3g, cycle time approx. 1.44s (i.e. 48 closures in 1.44s) energy requirement: 0.6 kWh/kg in addition to the compression moulding system discussed above Sacmi exhibited the “Colora Cap Digital Print” for cap printing. High-definition digital images are imported into the printing system. max output 36,000 caps/h caps diameter ranging from 20 to 70mm installed electrical power: 10,9kW absorbed electrical power: 7kW USP in their own words The unique selling points all concern the pros and cons of com- pression moulding versus injection moulding. The arguments are well known. Nevertheless some additional comments should be mentioned. Much lower investment in case of mould change – compared to injec- tion. energy consumption lower due to lower process temperature – com- pared with injection; shorter cycle time/faster speed because, compared with injection moulding, temperature gap for cooling is lower; wear on mould negligible; ancillaries easy to integrate such as for assembly, printing and slit- ting. Netstal We met: Marcel Christen, Head of Product Management Christine Grob, Trade Press Officer Marketing Communication Netstal – traditionally known for its strengths in packaging, PET and caps & closures technology with “premium injection moulding machines made in Switzerland” – presented at K 2013 the latest Elion 4200 development as prominent example of Swiss pride and precision within the Krauss Maffei Group. Marcel Christen quote: “We, as manufacturer of injection moulding machinery, are respon- sible for the performance of the system, for quality and precision, for the speed, the energy balance, and overall productivity which we achieve with the various moulds we are using. We have experience in optimising the process. Netstal have boasted outstanding references for many years’’. Products for beverage caps & closures For the caps & closures sector, Netstal offer three models in the Elion series with hybrid drive technology: clamping and plasticising – electric; remainder - in particular injection moulding - hydraulic. Elion 2200: 220t / 48 cavities Elion 3200; 320t / 64 + 72 cavities Elion 4200: 420t / 96 cavities Netstal also offer systems – in agreement and together with a “net- work of recommended sub-suppliers”. Exhibit at K 2013 Elion 4200 – 2000, hybrid, 420t, 96 cavities Standard drinks closure 29/25 for still water, 1.3g, cycle time below 2s power requirement of the complete System 0.58kWh/kg mould: Schöttli hot runner: Mold-Masters quality control: Intravis 360° Caps production, Swiss style, at the Netstal booth at K 2013
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