SHEETFED DRYING/CURING SYSTEMS -- Running Hot and Cold
With hybrid UV, "multiple UV inter-decks, docking stations and our approach to electrically connect these components via a central switching cabinet are just some of the suggestions we regularly make to avoid a print process roadblock later," offers Kowalski of Grafix.
"Without a doubt, installation on a new press is always the preference," says technotrans america's Bonallo. "The shear amount of square footage the enclosures occupy must be considered up front, along with power, water and air requirements. Oftentimes, UV preparation is not standard on the press and must be provided by the press manufacturer." He says the required modifications can include adding special raised guards between the print units, using special gripper/gripper bar materials in a modified design, and changing the internal wiring and plumbing, etc.
A print shop can reap internal benefits, as well, points out John Crosby, technical manager of ink and drying systems at Baldwin Americas, in Shelton, CT. "Including the drying system in the configuration of a new press means the press operators need only go through one learning curve, as they simultaneously become familiar with the press/dryer package. The drying system may also be more affordable if purchased with the press, since it can be included in the financing package."
That takes care of why and when to buy, which only leaves the decision of what to buy. To that end, the sidebar to this story offers some information about specific drying and UV curing products that can be ordered with a sheetfed offset press or installed as an upgrade.
Bringing an End to Wet Work
Print buyers continue to turn up the heat on sheetfed printers, pushing for ever faster turnaround of jobs while expanding their use of color and coatings. This has put increased emphasis on having an effective solution for drying and/or curing printed sheets. Manufacturers are responding to this challenge with hot-air, IR and UV systems that can be incorporated into new presses or installed as an upgrade.