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Graham Engineering Corp of York, PA, USA has recently highlighted the
advantages of their Rotary Wheel Blow Moulding Machine, with studies that
confirm energy savings and significantly reduced carbon footprint, as
compared to conventional Blow Moulding Machinery.
The machines motions has been designed with increased efficiency in mind -
the Rotary Wheel machine with a single parison provides a continuous
upward extrusion captured by the bottle moulds whose open and close
motion is activated via a cam. This differs from typical blow moulding
machiney motions, which shuttle the moulds back and forth, accelerating
and decelerating with commensurate energy consumption.
The GEC Mini Wheel requires only two small electric motors to drive the
Rotary Wheel, and uses on 2.7kW of Energy at Full Speed. The 'Almost
Electric-Hybrid' uses only 5% of the total energy to drive a small
electric hydraulic pump, required for the micro calibration parison
control system for repeatable container wall section adjustment.
GEC have also focussed on reducing the weight of the bottles, which in
turn reduces the amount of resin used and cycle times required. The
Rotary Wheel machine is able to provide 'concentric consistency', which
means less material is used while maintaining part weight within the
minimum percentile specification. Also as a result of the captured
parison, containers can be efficiently produced in a neck-to-neck
configuration, which results in fewer defective bottles and less scrap.
The weight was reduced from 9.8 to 8.5gm (13% saving) which equates to
the HDPE requirement being reduced by approx. 900,000kg. per year and a
corresponding saving of 820,000kg. of CO2 over 500 million containers per
year produced by the customer.
As measured by 'Power Quality Analysers' when producing a 250ml Single
Serve Juice Container in HDPE on a Mega-22 Wheel with 88 cavities, the
energy can be reduced from 6.5 to 3.8 kWh per 1,000 containers
(representing a 42% saving)
GEC is represented in Oceania by HBM Plastics Technologies.
For further information, please contact:-
Australia
Gary Brown +61 2 8814 3100 gary@hbm.com.au
Geoff Kelly +61 3 9646 3153 geoff@hbm.com.au
New Zealand
Wayne Brown +64 9 271 6144 wayne@hbm.com.au
Plastics News International Magazine - December 2008
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