To wind flatter rolls of cast film with less edge trim there's now an alternative to oscillating the film as it's wound.

To wind flatter rolls of cast film with less edge trim there's now an alternative to oscillating the film as it's wound. Colines in Nibbia, Italy, developed a system it calls "dittering," which involves electronic feed control and feathering the die's automatic gauge control to open and close the die lips by a small amount in a continuing oscillation. Colines developed the system using an automatic die from Cloeren Inc., Orange, Texas. The first application was in 2004 on an eight-extruder, seven-layer barrier film line at sister company B-Pack in Italy. Colines has sold nine more Dittering lines since then. Colines: +39 (321) 48 63 11 . www.colines.it