BLOWN FILM DIES | MACHINERY


helps determine the quality of the film. Hosokawa’s new calibration basket has roller arms with ball-bearing rollers in a ‘V’ arrangement and centre-guided roller positioning. It works with a solid, high-precision scissor principle for opti- mum film quality. It also has retaining elements for attaching the ultrasonic sensors for bubble control. “Our calibration basket is perfectly matched to the other components of Alpine blown film lines


and fully integrated into our overall system,” said Bernd Bayer, R&D director for blown film extrusion at Hosokawa Alpine. As an example, the diameter adjustment and height adjustment can be controlled via the company’s ExVis system control unit. The calibration basket has a modular design and can be optionally equipped with extra features. A monomer separator is available for monomer extraction, which collects extracted monomers separately to prevent contamination of the bubble. Another option is a post-cooling unit to increase output. This reduces blocking of the collapsed film bubble and is suitable for faster cooling of the film bubble with limited roof heights. The basket can also be fitted with an infrared sensor to monitor the film temperature. It is available in four different sizes, covering the spectrum of layflat widths. “It gives our customers a blown film line with a completely modular design,” said Bayer.


CLICK ON THE LINKS FOR MORE INFORMATION: � www.reifenhauser.com � https://octagon-company.com � www.hosokawa-alpine.com


Left: Hosokawa Alpine’s modular calibration basket guides the film bubble after it exits the die


diing.kuen@hibox.hinet.net


IMAGE: HOSOKAWA ALPINE


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