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INDUSTRY FOCUS PRINTING & PACKAGING
BUILDING SUSTAINABLE PACKAGING SOLUTIONS
Responding to the need for sustainability and energy efficiency in the packaging industry, Sumitomo (SHI) Demag has developed a new
range of machinery featuring innovative technology
W
orth an estimated £4.6bn and anticipated to grow by 4.2% in 2023, the UK Plastics Packaging Goods Manufacturing industry
is underpinned by ongoing product innovation in flexible packaging. In light of this, Sumitomo (SHI) Demag has built a new range of machines which are reinforcing its commitment to the circular packaging agenda and its delivery of sustainable value aligned to the key packaging market trends. The machines are aimed at UK packing converters and moulding firms. The new machines are the concept PAC-E; an
El-Exis SP Servo range; and a new IntElect S, all of which are available in a variety of clamp forces. According to the company, these provide manufacturers of caps, closures, thin-walled and high performance moulded containers a fusion of
its very best technology, productivity and energy-enhancing features.
DESIGN DEVELOPMENTS One of its design developments is the successful blend of its high-speed El-Exis packaging platform with the IntElect all-electric series. PAC-E features a brand new injection unit specifically developed for high speed packaging applications. Two innovations differentiate
PAC-E from the company’s popular El-Exis hybrid packaging series. Firstly, the electric-driven axes deliver up to 50% in energy savings when measured against a high- speed hybrid packaging machine. Secondly, the lubrication of the toggle lever no longer causes cleanliness issues; being a completely closed circuit design it is leak free. Oil is instead extracted, filtered and recycled, with the added benefit of reducing oil consumption. With injection speed capabilities of up to 550mm/s, the PAC-E packaging machine will initially be available in mid-tonnage clamping forces of 250 tons, 300 tons, 350 tons and 420 tons. This is designed for thin-walled packaging applications, including food packaging. At K 2022, the PAC-E exhibit repeatably manufactured in a sub 2-second cycle time, 2,100+ HDPE beverage caps per minute, with an energy consumption of 0.32kWh/kg.
SUSTAINABLE SOLUTIONS Advancing its high-speed El-Exis SP, the
ASYNCHRONOUS MOTORS FOR END-OF-LINE PACKAGING APPLICATIONS
Drives with centrally controlled servo motors are commonly used in end-of-line packaging. However, in applications with large inertia or long movement distances – such as palletising, stabilising or handling – decentralised drive solutions, for example with controlled asynchronous motors, can be an efficient and economical alternative. Due to their high inertia, NORD asynchronous motors are
advantageous for end-of-line packaging. When moving heavy loads, these ensure better control than conventional servo
solutions and enable high process stability, reducing vibrations which can damage the load or packaging machine. In addition, asynchronous motors are available in a wide range, are easy to maintain and can be combined with different types of gear units and frequency inverters. When used with decentralised frequency inverters, such as NORDAC BASE SK 180E, NORDAC FLEX SK 200E, NORDAC LINK SK 250E or NORDAC ON SK 300P, components such as control cabinets and wiring are eliminated and the setup effort is lower. An additional important advantage is space saving. Asynchronous motors with decentrally controlled frequency inverters and encoder feedback via absolute or incremental encoders enable highly economic and precise positioning applications, as well as dynamic movement of large and heavy packaging units.
NORD DRIVESYSTEMS 50 DESIGN SOLUTIONS MAY 2023
https://www.nord.com/de
company has also introduced a ‘servo pump’ variant, available in the medium and high clamping force range and designed for thin- wall pails and containers. Commenting on the sustainability of these, UK packaging expert Ashlee Gough, said: “With hybrid machines, the pump that charges the accumulator consumes approximately 50% of the overall energy used to power every injection cycle. By replacing the conventional pump with a servo pump, we can now maintain the same performance but consume significantly less power.” The IntElect S all-electric mid clamp force
range, meanwhile, means moulders requiring cycle time speeds of between three to 12 seconds don’t need to compromise on any aspect of productivity, energy efficiency and processing speed and stability. Positioned between the conventional IntElect
all-electric series and the new high-speed packaging injection moulding machine PAC-E, the IntElect S is geared specifically towards plastic processors mass-manufacturing narrow tolerance and thin-walled components at the fastest speeds. “Cycle times of between three and twelve
seconds and injection speeds of up to 350mm/s are the typical range of this machine,” explained Gough. This version features resilient, high performance drives and shorter clamp spindles, resulting in faster acceleration of the injection speed to achieve on average a one second cycle time saving when compared to a standard IntElect model. According to the company, all three ranges
are designed to incorporate future digital product passport technology, ensuring detailed transparency on machinery performance and the measurement of carbon footprints.
Sumitomo (SHI) Demag
http://sumitomo-shi-demag.co.uk
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