Engel at Fakuma 2021:
Thin-wall injection compression moulding for stack mould technology
Engel’s stand at Fakuma 2021 will put the spotlight on sustainability. The production of decorated monomaterial food packaging and the processing of regrind from labelling waste is supporting circular economy by creating a process chain. At the same time, the company is celebrating the world première of the 4,200 kN version of the Engel e-speed injection moulding machine. The sophisticated packaging application combines extreme thin-wall injection compression moulding with stack mould technology.
Over the five days of the trade event, an e-speed 420/90 injection moulding machine with integrated in-mould labelling (IML) will be used to produce ready-to-use margarine tubs from polypropylene in a fully automated injection compression process. The containers which have a wall thickness of 0.4 mm (including the label), will be removed from the 4+4-cavity stack mould via high-speed, side-entry automation and stacked on a discharge conveyor following camera-based quality control. Corporate partners at the trade show will be MCC Verstraete, Plastisud, Campetella, Mevisco and Borealis.
With the new e-speed size 420, which offers 4,200 kN of clamping force, Engel continues to diversify its product range. The Engel e-speed injection moulding machines with hybrid injection unit and electric clamping unit combine very short cycle times with maximum precision and very high injection speeds of up to 1,200 mm per second; they operate with extreme energy efficiency. An innovative energy recovery system absorbs braking energy from the platen movements and returns the stored energy to the motor – for example, to accelerate the mould mounting platens again. The toggle lever is encapsulated to ensure particularly low oil consumption and maximum cleanliness. In this way, the machines of the e-speed series meet the strict requirements of the food industry as standard.
The margarine tubs produced at the Fakuma event will be made of polypropylene, as will the labels. At the end of its service life, the monomaterial packaging can be shredded as is the case for production waste from the manufacturing process; the raw material thereby obtained is used in the processing of new products. At its stand, Engel will demonstrate these possibilities by processing waste label offcuts in the form of regrind. An Engel victory 460/80 will be used to produce Pöppelmann tapered closures from an 8-cavity mould.
Engel is one of the global leaders in the manufacture of plastics processing machines. Today, the Engel Group offers a full range of technology modules for plastics processing as a single source supplier: injection moulding machines for thermoplastics and elastomers together with automation. With nine production plants in Europe, North America and Asia (China and Korea), and subsidiaries and representatives in more than 85 countries, Engel offers its customers the excellent global support they need to compete and succeed with new technologies and leading-edge production systems.