Lenzing, Austria-based SML Maschinengesellschaft mbH said its Sleeve-Touch production line allows the production of poly-propylene film at a thickness range that closes the gap of gauges between cast film and sheet extrusion, thanks to contact on both sides of the film and the low contact pressure.
The vertical melt curtain is cooled down between a seamless steel belt and a chill roll on a horizontal roll stack.
The film has high transparency with low haze and without die lines. Other benefits include low orientation and internal residual stress, especially when compared with calendered film.
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