Engel Holding GmbH has sold a huge injection press, with 5,500 metric tons of clamping force, to German trash-cart maker Sulo Umwelttechnik GmbH.
The Engel duo press, 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 trash containers out of high density polyethylene.
Engel spelled out some statistics in a news release issued Dec. 1:
* Tie-bar spacing is 2,580 millimeters wide (8.6 feet) to allow the mold, which weights 112 tonnes, to be loaded into the mold.
* The largest trash carts measure 1,200 millimeters by 1,000mm by 100mm (in feet, that's 4 by 3.3 by 3.3), and stands 2,800mm high (9.3 feet).
* Two barrier screws, with a screw diameter of 215mm and a length-to-diameter ratio of 24-1 feed the HDPE into the mold. Injection pressure is 2100 bar.
Engel officials said the super-large presses 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.