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News / Innovations
Production in two decks reduces costs
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Due to a central arrangement of the cold runner in the injection moulding process, elastomer parts can be produced in two decks. This increases productivity by 70 % on an average.
The two-deck production is possible with both horizontal and vertical machines. This variant is particularly suited for the production of seals, because two-platen moulds are mainly used here. Beside the central cold runner system, a dipping machine nozzle is also required in this case.
The additional investments for a second mould and the two-deck cold runner as well as additions on the injection moulding machine only involve an average of 30 % extra costs. This enables on an average - with the machine size remaining the same - an increase in productivity by 70 %. On top of this is the fact that the two-deck production can be easily automated on horizontal machines.
Since all DESMA injection moulding machines can be equipped with high-pressure injection units (HP) with injection pressures up to 3,500 bar, sufficient pressure reserves even for high-viscosity compounds are available also when applying multi-nozzle central cold runners.
The following example analysis shows for which quantities and in which scope such a production is worthwhile:
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