Patent attributes
A method for manufacturing a blown plastic film using an extruder, the method comprising extruding a tube of polymer resin; cooling air from a temperature of greater than 55° F. down to a temperature between about 35° F. about 50° F., to produce an intermediate cooled air stream; dehumidifying the intermediate cooled air stream to less than about 15% humidity, to produce a dehumidified intermediate cooled air stream; cooling the dehumidified intermediate cooled air stream to less than 35° F., to produce a super-cooled air stream; and directing the super-cooled air stream at the extruded tube of polymer resin.