Bekum and Polykemi are introducing the organic plastic EcoScan, made from calcium carbonate (chalk) and PE for the extrusion blow-moulding process.In the past 30 years, more non-renewable resources were consumed on earth than civilisation had ever required before. Current climatic changes are a warning: new standards must be set for the production and consumtion of resources. The plastics industry has therefore already begun to turn its attention to renewable materials: The “bio plastics”. Bekum and Polykemi are presenting applications from the food sector with a material combining polyethylenes (PE) and chalk.
Within the framework of a cooperative venture, the Swedish raw material manufacturer Polykemi AB (Ystad – Sweden www.polykemi.se) will be presenting a new bio-plastic: a polyethylene with a chalk (calciuim carbonate) constituent as a filler. This Swedish granulate calls itself “EcoScan” (formerly: “ScanFill”) and replaces conventional HDPE as a constituent of foodstuff containers.
The material demonstrates outstanding barrier properties, an improved UV protective function and its high cost effectiveness makes a pleasant surprise. In addition, advantages arise from its processability in extrusion blow-moulding: The first fully electric blow moulding machine Eblow 206 D is being tested as a dual-station unit for 3-layer extrusion. 5,220 units of a 200 ml milk bottle can be blow-moulded per hour using the EcoScan material on a Bekum. Depending on the material used for comparison, up to 30% high production quantities are feasible.
EcoScan in blow moulding technology – an ecological contribution
EcoScan has of course received FDA certification as foodstuff-safe and its extended shelf life is also assured. The physical and functional advantages are just the start: methods of production and refinement of the material, as well as recycling after packaging use, result in a positive environmental balance. This way, EcoScan is already conserving energy and water during its production. Both companies are confident that this contribution to matters of enviromental responsibility will be well received in the marketplace.
EcoScan in comparison with other plastics: increases in production of up to 30 % over conventional PS, PE or PP are possible as a result of improved processability.