Macro Engineering & Technology Inc., Mississauga, Ont. has upgraded its high-speed cast line for producing PVC cling film to boost output by more than 20%.
The new 2-meter-wide line provides outputs of 660 lb/hr (up from roughly 500 lb/hr in the previous design). It produces film from 8-16 microns thick for both hand-wrap and machine-wrap applications. A key feature of the redesigned line is the new winder (photo), which operates at speeds up to 920 ft/min. The winder is a specially designed two-spindle contact version that creates elevated contact forces to generate rolls that are transparent and with uniform geometry. The cutover sequence on the new winder has also been improved to drastically minimize scrap during roll indexing. When fully equipped, the line is supplied with auxiliary roll edge cutter, resin blend preparation system and recycling system.