MACHINERY | WINDERS
last layer. A handling system is available both for shaftless winding and for winding with shafts. During shaftless operation, rolls can be also handled with an overhead crane.
Winder update German film extruder Profol recently modernised one of its cast film winders with help from Windmöller & Hölscher (W&H). After more than 23 years of operation, the
Above: SML’s new W1300 turret winder is for cast jumbo rolls up to 1,500mm in diameter
1,500 mm, running times of individual rolls can be extended significantly. Extending the production runs mainly boosts efficiency in later processes, such as printing or metallising. This example shows the amount of cast film contained in a 1,500mm jumbo roll. When a 25-micron cast film is wound onto a roll with a diameter of 1,200mm, this roll contains 45,000 running metres of film. A jumbo roll with a diameter of 1,500mm has 70,000 running metres of the same film – an increase of more than 50%. The W1300 winder can easily be adapted to
different production requirements. Two operational modes are available: gap mode and contact mode. Before the film hits the contact roller, it runs over a continuously adjustable satellite roller, to control the air intake between the individual film layers and adjust the hardness of the film roll. Winding is possible with or without winding shafts. The inlet section of the winder is prepared for the installa- tion of a post-cooling roller. Two different cross-cutting units are available. One is a full-width twisting knife for thinner films; the second one is a flying knife for thicker films and oriented films. During a roll change, driven auxiliary contact rollers are engaged, to keep the condition of the film at the roll in perfect condition up to the
Filmex M winder (with a five-layer feedblock) was updated. The aim of the project was to ensure the high reliability and quality of the production processes in the long term while increasing operator safety. As part of the process, discontinued compo- nents were replaced to ensure the long-term availability of the winder. The measures included: installing new control cabinets; replacing the converter technology; and, introducing a modern user interface. “We value the cooperative partnership with
W&H,” said Marco Dudda, head of production and technology at Profol Harbke. “Thanks to their commitment, we were able to implement the modernisation in the planned time frame and continue production without interruption.” One of the main objectives was to increase
operator safety, which was achieved by using modern technology and complying with current safety standards. At the same time, the winding quality had to be maintained at a production speed of up to 200 m/min.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.bimec.it �
www.ashe.co.uk �
www.maxcessintl.com �
https://imstechnologies.com �
www.sml.at �
www.wh.group
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