Instead of losing ribbons of bleed trim between rolls when slitting film into smaller widths, the Reinhold winder div. of Windmoeller & Hoelscher Corp., Lincoln, R.I., has fitted two "banana"-type driven rollers with synchronized speeds after the knife slitters. Banana No. 1 spreads the slit webs apart, and Banana No. 2 brings the cut sections into parallel again with up to 4-mm gaps between them. The new web-slitting mechanism, called Banana Split, slices with a single blade, whereas typically two blades are used with a gap between for bleed trim. (Typical winders also use one non-driven banana roller instead of two driven rolls.) Banana Split reduces costly waste in multilayer barrier films, where trim can't be recycled into the product. It was first used on Reinhold's ASK winder nearly a decade ago, but with AC motor drives. It now has servo drives that synchronize speeds. and is available on Reinhold's ASK, Filmatic-R, and the Filmatic-TX large turret winders.
Windmoeller & Hoelscher Corp
23 New England Way Lincoln, RI 02865
Phone (401) 333-2770 Fax (401) 333-6491