SPARE CHANGEOVER (Will personnel concerns limit quick-changeo

Sleeve evolution has especially influenced changeover capacity of wide-web flexo presses, though the quest for easier-to-handle sleeves is sometimes at odds with improved press performance. Suppliers have created bridge sleeves to lighten the load of the system, but their usage introduces new tolerance issues. "A mandrel, bridge mandrel, and sleeve combination can have no better than 0.0025˝ to 0.004˝ tolerance when new," attests Joe Tremper, sales manager, Windmoeller & Hoelscher (W&H) Corp.