Husky Injection Molding Systems, long the leader in PET preform manufacturing systems, demonstrated production of a 33.6-gram Ecobase preform on a 72-cavity mould running 50% post-consumer PET flake at Drinktec on the same 10.5-second cycle as virgin resin
Described by Husky President and CEO John Galt as a first step toward building a portfolio of new sustainable packaging production systems, the system was built around a 300-metric-ton machine from the company’s HyPET range with a modified plasticizing system capable of handling this high level of difficult-to-feed flake. On the plasticizing side, the machine was equipped with an upsized continuously running contra-rotating twin-screw extruder capable of plasticizing and feeding the blend of virgin pellets and recycled flake. The plasticised melt was fed through a Gneuss continuous screen changer preventing any contaminants present in the flake. The machine, which was to be shipped to one of Amcor PET Packaging’s sites in the US after the show, is targeted at preform producers wanting to add more recycled content without sacrificing cycle time.