A tiered IBC device and air ring from Kuhne GmbH in Germany (U.S. office in Norwich, Conn.) enlarges the diameter of blown film bubbles as much as two-fold, using very high air pressure and optimized air-channel distributors. The Smart Lip Maximizer consists of 32 or 64 segments, depending on diameter, together with a five-stage IBC, which separates streams of cold and warm air. Heat exchange is quick and efficient, Kuhne says. For a 180-mm (7-in.) diam. die, it blows a bubble up to 350 mm (13.8 in.), allowing the small die to use an air ring twice its size. The higher-capacity cooling can also double output, so the 180-mm die produces 1300 lb/hr instead of 660 lb/hr. The film’s dart impact strength improves by about 20%; gauge tolerance and tear resistance also improve, especially for films with low BURs, Kuhne says. The device also improves output of sticky films like mPE and films with poor melt strength like PP. Kuhne introduced the Maximizer at an open house in Germany back in 2005 and has installed 32 since. The Maximizer will be shown publicly for the first time at the K 2007 show in Dusseldorf this month. Tel: (860) 886-7745 • www.kuhne.de
American Kuhne, Inc.
31 Connecticut Ave. Norwich, CT 06360
Phone (860) 886-7745 Fax (860) 887-7621