Extrusion International 3-2023

36 Extrusion International 3/2023 SHREDDING TECHNOLOGY Hydraulic Alternative for Thick Edge Trims Getecha presents a new guillotine for demanding coarse crushing In film and plate extrusion, particularly tough edge trims come up every now and then, which cannot be deflected and can only be granulated to the desired target size at the level of the extrusion line. To condition this material for processing in hopper granulators as efficiently as possible, it must first run through the process step of coarse crushing. Adapted to this, GETECHA supplies a range of powerful foil cutters and choppers, which has now been extended by a new hydraulic guillotine for extreme process requirements. T he German plant engineering company GETECHA has devel- oped a new hydraulic guillotine for the coarse crushing of extrusion waste, whose performance is de- signed for the processing of very solid, dimensionally stable and thick leftover pieces under low infeed speeds. It has the type designation GH 300 HYD and is the new top model in the chopper range of the company. With drive outputs of up to a total of 15 kilowatt, it is recom- mended as effective solution for par- ticularly demanding tasks of coarse crushing, where continuous cutting is not possible or electrically operat- ed guillotines reach their limits. “The performance of the hydraulic unit of our new chopper is spread across 2 x 7.5 kilowatt for two cylinders, which provide the two blades of the system with particularly powerful feeds with torques of up to 200 kN. The GH 300 HYD reliably cuts through several centimetres of POM and HDPE resi- dues from plate extrusion with this – depending on the application con- tinuously and discontinuously with up to five scissor-cuts per minute”, Christine Rosenberger, Managing Director of GETECHA explains. When coarse crushing such solid material strands, violent shocks and jamming of the material in the cooling off and trimming line must be avoided at all costs. For this reason, these hydrau- lic choppers are installed on linear guides. This way, the guillotine GH 300 HYD can operate as a floating in - stallation during cutting at the feed level. This ensures smooth, continu- ous material flow, protects against shocks on the upstream extrusion equipment and enables realisation of customer-specific cutting lengths. Three systems and many versions Withthehydraulicguillotine,GETE- CHA is extending its range of coarse crushers to now three chopper series in different performance classes. For the two electrically driven GH 200 and GH 300, as well as the new GH 300 HYD, it is vital that all important systemparameters can always be de- signed project- and customer-specif- ically. All three guillotines share the feature of crushing in accordance with the scissor-cut principle, with one moveable and one fixed blade each. While for the small, compact GH 200, a 2.2 kilowatt drive (op- tionally also frequency-controlled) provides between 60 and 100 cuts New from GETECHA: The hydraulic guillotine GH 300 HYD for the coarse crushing of very solid, dimensionally stable and tough edge trims from extrusion, which are difficult to deflect. The image shows the new coarse crusher mounted on a linear guide with adjustment unit (All photos: Getecha) Christine Rosenberger (left): “Thanks to new design and hydraulic unit, our new guillotine GH 300 HYD achieves individual section lengths with up to five scissor-cuts per minute, even for several centimetre thick POM and HDPE edge trims from plate extrusion.”