Rayven Technologies
"When it came time to purchase the seventh slitter, we looked around the industry," Heinemann explains. "It's very difficult to find manufacturers that would make a machine that would slit down to 0.75-in.-wide material. Most of the manufacturers would go down to only 1-in.-wide strips. Deacro said we can do it, and here's how we can do it."
Specifically, Deacro demonstrated its C800A duplex center-wind unit's ability to slit the Any-Pak release liner down to 0.75-in.-wide at an average speed of 1,200 fpm (equal to 500 linear miles of the narrow liner per hour.) According to Deacro Industries sales manager Keith W. Hamilton, Rayven's slitter was configured with three different features specifically for optimal narrow-web slitting/rewinding of light-gauge, unsupported film: servo lay-on roller, roll-lock differential air shafts with a core-shoe locating system, and closed-loop rewind tension technologies.
"Deacro's servo-actuated lay-on technology allows Rayven to rewind using an individually loaded lay-on roller on each rewind roll," Hamilton explains. "This provides control with compensation for roll-diameter variations. Deacro's Roll Lock Differential Air Shafts are ideal for tension-sensitive materials. Rayven's machine features a core-shoe locating system to accurately position cores for rapid and accurate setup. The core-lock design of the roll-lock shafts ensures maximum core stability for the narrow slits even when rewinding at high web speeds and large rewind diameters."
But, it's the closed-loop tension control that has Heinemann excited. "The technology of the center-winding slitters hasn't changed over the years," he says. "Yes, the electronics have changed. But, the mechanics haven't really changed, with the exception of closed-loop tension control. It actually measures the tension and adjusts the machine accordingly. I would say this new technology is one that very few slitters on the market have. The Deacro's really unique because its closed-loop tension control allows it to slit the very narrow and very slippery materials that we slit."
Coating Excellence (2009)