Sumitomo (SHI) Demag has modified its El-Exis SP series, considerably increasing the energy efficiency of these machines, which continue to be the fastest injection moulding machines for the packaging industry.
Capable of delivering dry cycle times of less than two seconds, the machines in the upgraded series have high process consistency through acceleration, mould movement and deceleration, Sumitomo Demag said 25 Jan.
Central to the machine's fast cycle time is the hydraulic accumulator, which achieves injection speeds of up to 1000 mm/s and accelerates at up to 32 m/s2. This, said the company, is more than six times the rate of a conventional fast cycling machine.
Sumitomo Demag has also introduced a new control valve regulating the hydraulic pressure during the loading of the accumulator. This new feature means the machines will now consume up to 15% less energy compared to their predecessors.
The amount of energy saved is dependent upon the packaging application, moulding cycle time and process parameters.
The machine is aimed directly at high volume manufacturers of polymer products, including caps and closures, thin wall containers and lids.
According to the machinery supplier, fine tuning existing features and the new additional options, will give packaging moulders “greater control over their process, in addition to lowering operational costs and delivering energy savings.”