2013
| news
Dr Boy’s EconPlast targets plasticising energy use
German machinery maker Dr Boy launched a brand new energy saving technology at K that is claimed to cut the energy consumption of the injection machine’s plasticis- ing system by up to 50%. According to Dr Boy managing director Alfred Schiffer, the EconPlast system is a package of technical innovations designed for use in conjunction with its servo- motor machine drive system to further improve overall energy efficiency. “This is not just insulation,” said Schiffer. “It is
a bundle of changes. We have optimised the drive technology and added new design elements.” Schiffer said the company is
in the process of patenting the technology, so declined to give too much detail. However, he told Injection World that the interface between the barrel and the machine has been redesigned to minimise losses, the heating profile has been modified for more efficient melting, and grooved internal surfaces and integrated resistive heaters are used in
key sections to improve energy transfer.
Heating energy require-
ments are reduced by around 40% and dosing energy losses by around 60%, claimed Schiffer. The system is also said to provide more precise temperature regulation, faster start-up and better melt homogeneity. The EconPlast system is
available as an option on new Boy machines (it is offered for screw diameters from 24-48mm) but cannot be retrofitted to existing models. Schiffer said the payback will depend on the processing temperature, volume and types of resin processed but would typically be around two years (based on ETP melt tempera- tures and compared against a wear resistant barrel). The company claims that a
60 tonne Boy 60 fitted with the EconPlast system achieves a 9+ energy efficiency rating in the Europmap 60.1 test. ❙
www.dr-boy.de
Piovan goes
filter-less
Italian ancillary equipment maker Piovan launched a new range of filterless hopper loaders that are claimed to reduce mainte- nance requirements and energy consumption. The Pureflo loaders use
an energy dissipation device (licensed from Vactec of the US) at the end of the loader pipe that absorbs all of the kinetic energy from the granules so they drop directly into the hopper. This eliminates the need for a filter.
In addition to the
reduced maintenance requirements, eliminating the filter also eliminates the associated pressure drop, allowing the system to be run at a lower pressure to save energy. The company says the
Pureflo loaders will be offered alongside its conventional vacuum loader product line. ❙
www.piovan.com
Milliken validates clarifier energy savings
With environmental concerns high on the agenda at many packaging producers, Milliken Chemical has developed a new labelling scheme that users of its Millad NX8000 can use to present independently-validat- ed energy saving claims. The Environmental Claim
Label is validated by interna- tional testing house Under- writers Laboratories’ UL
18
Environment division and covers energy saving claims related to the use of the Millad NX8000 clarifiers in transpar- ent PP resins. The first company to adopt the label is Belgium’s DBP Plastics, which is using it on some of its clear PP housewares products. The claims are based on
test data showing that processing temperatures can
INJECTION WORLD | November/December 2013
be reduced from 235˚C to 190˚C when using PP clarified with NX8000, resulting in energy savings of 8% and CO2 emission reductions of 12%. The label used by DBP states: “Plastic part manufactured using 8 to 12% less energy due to clarifier technology.” “We think the label could
create a bit of peer pressure,” said Wim van de Velde, global
product line manager for plastic additives at Milliken. ‘High clarity is a [consumer] need, green claims are a want. But if they can get a green product at the same price they may buy it.” Processors wanting to find
out more about ECV labels should contact UL Environment. ❙
www.milliken.com ❙
www.ul.com
www.injectionworld.com
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