Engel Holding has sold a huge injection moulding machine, with 5,500 tonnes of clamping force, to German trash cart maker Sulo Umwelttechnik. The Engel duo machine, a model 8000H/8000H/5500, is the largest and heaviest Engel has ever built, said officials of the Schwertberg-based machinery maker. Sulo is adding the hefty machine to its headquarters factory in Herford, Germany, to make four-wheeled rubbish containers out of high density polyethylene. Engel spelled out some statistics in a press release issued 1 December: * Tie-bar spacing is 8.6 feet wide to allow the mould, which weights 112 tons, to be loaded into the mold. * The largest trash carts measure 4 feet by 3.3 feet by 3.3 feet, and stands 9.3 feet high. * Two barrier screws, with a screw diameter of 215 mm and a length-to-diameter ratio of 24:1 feed the HDPE into the mould. Injection pressure is 2100 bar. Engel officials said the super-large machines are built specifically for the molded part. Engel equipped the 5,500-tonner with Ecodrive, which cuts energy consumption by using a servo-driven hydraulic pump to run platen movement. Engel calls it the “no drive while idle” principle.