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In addition to thickness deviation , film flatness and curvature are also both influenced by the processing properties. To compensate for these variation, and to randomize their affect, saimech Extrusion technik has developed a modular oscillating haul-off unit with 350 degree rotation. vertical turning bars,with air slides,guarantee energy saving and easy operation. and the use of the oscillating haul-off unit allows for the replacement the typical ratating due head by a stationary die head which provides a solution to die leakage,reduces the problems from a long spiral channel in the die head, and minimizes uneven heating and difficult maintenance.
All of this makes it possible to provide excellent film flatness with a Wrinkle-free edge.meanwhile the oscillating haul-off unit makes it easier t produce multi-layer film products by simplifying the control of the recipe and technical processing. The vertical oscillating haul-off unit effectively randomizes the tolerance of film thickness quality of the film roll to meet the strict requirements demaned by Flexographic and rotogravure printing.