Coating & Laminating Solutions

Release Date: 03/18/2014

As slitter rewinders get faster, efficiently moving away finished rolls becomes a challenge. Catbridge offers a variety of solutions to unload finished rolls and deliver them for packaging. Catbridge has also developed a discharge system for large, heavy rolls.

One unloading and delivery solution is the rail or bridge finished roll discharge system. This system offers more flexibility than a fixed-position tree system. Available for slitter rewinders such as the Model 729 duplex winder, the rail discharge system provides unique advantages for machine accessibility and packaging operations. The system consists of an elevated horizontal rail and four sliding vertical beams equipped with tree shafts. Two shafts can be used to pre-load cores while the other two are used in discharge operations. Operators have full movement around the slitter. Furthermore, finished rolls can be moved to any position along the overhead rail and delivered to a packing station either in front of or behind the machine.

For multiple slitter rewinders, a common conveyor system can be used to deliver finished rolls to a packing station. This system works well between opposite-hand discharge slitters. The slitters can be equipped with traditional roll pushers and unloading trees. Once finished rolls are stripped off the trees, they can be conveyed to a remote packaging station. This ensures that packaging operations do not slow down converting operations.

To unload large, heavy rolls off center duplex winders, Catbridge has developed a patented tray-discharge system. The tray system safely and quickly removes heavy rolls from cantilevered shafts and orients them for packaging operations. Available in single- and dual-tray versions, this system handles rolls to 40-inch diameters. The dual-tray system has a weight capacity of nearly 4000 pounds. To remove finished rolls, trays slide into place, supporting the roll weight; the shaft supports disengage; the trays move away from the machine laterally, stripping the rolls; and the trays are positioned for roll discharge.

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