TECHNOLOGY | THIN WALL MOULDING
Above: SABIC is partnering with Krauss- Maffei’s Netstal brand in a strategic resource for innovative thin-wall packaging applications
Germany to meet strict thin-wall moulding require- ments. The application was a 5.5-litre bucket with tamper-evident closure, for potato salad or coleslaw for example, which required a particularly stable injection moulding process. The bucket lids are produced on an all-electric E-motion 280 injection moulding machine. The requirements for producing a lid with a tamper-evident closure that fits the bucket include stable production with short cycle times, as well as with thin-wall thicknesses and long flow paths. In order to combine high precision with high output and energy efficiency, Ilsen decided to invest in an all-electric injection moulding machine. This guarantees a high degree of process stability, and the precision of the machine opening move- ments also contributes to this. It ensures that the lids drop uniformly out of the mould onto the conveyor belt without jamming. If the mould mounting platen stops just one millimetre too early,
the entire downstream process stops. The E-motion mould mounting platens allows precision move- ment to be achieved in the hundredths of a millimetre range. All main movements are servo- electrically driven throughout the entire series, which enables parallel motion in the sequence and ensures extremely high dynamics. Engel offered a complete package that precisely met Ilsen’s technical requirements and it says downtime virtually never happens with the new machine. There are also short set-up times. Once the mould setting data and machine parameters for a part have been stored on the CC300 machine control unit, they can be continuously repeated. This guarantees a high degree of flexibility. The E-motion 280 is the first all-electric injection moulding machine on Ilsen’s production floor. The capital expenditure came with expectations of energy efficiency. In the first year since commis- sioning, Ilsen says that it was able to save 30% on energy, compared to a hybrid machine on which the bucket lids were previously produced. The sealed toggle lever of the E-motion machine makes a further contribution towards cost- and energy- efficiency. It ensures a cleanroom-capable working environment. Cleanliness is particularly important when it comes to food packaging, keeping production free from oil mist and lubricants. The positive experience with the E-motion 280 and collaboration with Engel has led Ilsen to look at all-electric injection moulding machine technol- ogy for producing the buckets as well. KraussMaffei HighPerformance, through its Swiss subsidiary and manufacturer of high-perfor- mance injection moulding systems known under the
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IMAGE: KRAUSSMAFFEI
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