If high-barrier cast film is more easily thermoformable with three nylon layers rather than one, wouldn't nine or 11 nylon layers be even better? That's the expectation of Excelsior Packaging Group, Yonkers, N.Y., and Windmoeller & Hoelscher Corp., Lincoln, R.I. Excelsior is reconfiguring a nine-layer Filmex casting line from W&H with a new 28-layer feedblock from Cloeren Inc., Orange, Texas. Excelsior bought the line to make high-clarity films for thermoformed food, medical, and consumer packaging up to 106 in. wide and 0.4 to 12 mils thick with maximum output of 3600 lb/hr. Excelsior and W&H expect that multiplying barrier layers will make the film even more flexible.
Windmoeller & Hoelscher Corp
23 New England Way Lincoln, RI 02865
Phone (401) 333-2770 Fax (401) 333-6491