Kiefel company develops single-stage stretch blow-moulding technology

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Photo by Kiefel GmbH Three-row linear robot with a gripping mandrel

Mould & Matic, a subsidiary of German machinery supplier Kiefel, has developed a single-stage injection-stretch blow-moulding machine. The new machine was on display at the Kiefel-Kuhne Cup Days event at Bosch Sprang, the Netherlands and Kuhne, Germany on 21-22 March.

The intelligent injection machine Blowliner, will be exhibited at the North American plastic show NPE, in Orlando in May.

Bernhard Hornhuber, sales manager for blow moulding technology, described Blowliner as an “extremely space-saving line completely from a single source - from granulate to packaging."

The line is available in three sizes and processes PET, PP, HDPE. It can also be upgraded to multi-layer applications at any time thanks to its intelligent side.

Another key feature, according to Hornbuber, is quality of packaging in medium quantities.

"Our customers need the flexibility to produce different containers with volumes between 10 milliliters and 5 liters on the same machine. The Blowliner fulfils all of these,” he noted.

The injection moulding unit, a vertical hydraulic Engel machine, is at the beginning of the linear machine.

Here the preforms are created; depending on the product these range from eight to 64 cavities.

Still warm, they are removed by a linear robot with a gripping mandrel and the preforms are transferred to the stretch-blow unit.

The machine works with one to four rows of blow tools that accept preforms with diameters from 10 to 150 mm.

Each series of cavities has its own pre- and main blow valve so that the pre- and main blow pressures can be set individually, according to Kiefel.

NPE2018 is scheduled for 7-11 May in Orlando, Florida. EREMA is exhibiting in booth W1249.

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