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Bunting unveils new magnetic spiral cylinder



Published June 28, 2010
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Bunting Magnetics, Newton, KS, USA, has introduced a magnetic printing cylinder featuring a new spiral formation. The design, which has curved magnetic rows, provides superior holding power and makes the installation and removal of dies very smooth, according to the company. The spiral design allows the cylinder to be used on both diecutting and printing applications.

“This is the next evolution for magnetic printing cylinders,” says Mike Wilks, general manager of Bunting’s Flexible Die Division. “Our new Magnetic Spiral Cylinder will give our customers the best holding power in the industry. Also, the design dramatically reduces the chance that a die will be damaged when being removed from the cylinder.”

The patent-pending spiral layout ensures that a plate will always fall on a magnetic field, Wilks says. “When a press operator is pulling the plate off the cylinder, the Spiral Cylinder will release the plate smoothly and avoid any costly kinking of the die. This contrasts to other regular cylinders, which typically have a dead zone that can cause a die to snap and crease. With the new Spiral Cylinder, even short dies that are not ‘full wrap’ will always land on a magnetic field.”




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