U.S.-based stretch film producer Sigma Stretch Film recently installed two stretch film lines, including a five-layer blown stretch film line at its facility in Belleville, Ont.
The lines – the second is a five-layer cast stretch film line installed at Sigma’s facility in Shelbyville, Ky. – are manufactured by Gloucester Engineering Co. Inc., which is headquartered in Gloucester, Mass.
According to Sigma, the two production lines will support growing business; the cast film line has been in production since October 2013, and the blown film line for Belleville will be in production in early 2014.
The five-layer cast stretch film line includes four Contracool extruders equipped with PIB injection that feed a Cloeren feed block and auto die, Gloucester said. Also included is a casting unit with temperature control unit (TCU) and a 1002-DS Surface-Center winder with dual overlapping single turrets. The line is enhanced with resin vacuum loading, loss-in-weight blending, gauging, profile control and a trim reprocessing system all controlled by the Extrol 6032 control system.
The five-layer blown stretch silage film line includes five Contracool extruders equipped with PIB injection feeding a low profile five-layer IBC die and air ring. Also included are a bubble cage, Traversanip oscillating primary nip roll with composite roller collapsing frame, secondary nip roll, and a dual turret 1002-D Surface-Center winder. The line is enhanced with resin vacuum loading, feed throat gravimetric blending, and a trim reprocessing system all controlled by the Extrol 6032 control system, and containerized controls.
Sigma Stretch Film is a division of The Sigma Plastics Group. Founded in 1978, Sigma is said to be the largest privately held film extrusion group in the U.S. Comprised of 13 divisions, 39 plants and employing 4,500 people, Sigma Stretch Film has five North American plants with four in the U.S. and one in Belleville.