thanks to the variable choice of layer structures offered by producers of 11layer blown film line, there is no need for the timeconsuming and costly laminating step in the conversion of some products. further more, the greater flexibility achieved with more layers often results in a higher overall performance when processing polyolefin. "but it gets even better", says ralf wiechmann, product manager at reifenhäuser blown film gmbh "we have developed a screw design for our extruders that can effortlessly handle almost every polyolefin type and every barrier raw material without modification of the machine." therefore, product changeover becomes as simple as child&39s play purging the line, changing to a new recipe and just watching another barrier film being conveyed to the winder. in this way, therefore, comparatively small lot sizes of specialty film can be produced economically.high quality for optimal conversion toanother special feature of the 11layer line is its innovative design. a skilful choice of an asymmetric highbarrier structure see ill. by the producer can almost completely call prevent curling of the film without using a normally required water bath critical with regard to hygienic production conditions.curling of the film edges is caused by the different speeds at which raw material cool down.further more, the specially developed evolution ultra flat hauloff ensures high winding quality and fast, smooth further processing, color such as conversion, laminating and printing. thanks to a minimized stretching of the film via heatingcooling rolls, a perfect flatness of the web can be achieved with this technology.easy handling and high energy efficiencyfor on optimum distribution of the eleven layers reifenhäuser blown film has developed a special the head based on the proven technology reifenhäuser. the individual adjustment of layer thicknesses allows for on ideal distribution of the raw material depending on the product.the well thoughout operation of the line facilitates easy handling of the eleven film layers and the large amount of linedata operators have access to all important parameters directly via a 24 "touch screen.ralf wiechmann explains "handling is as easy as using a smartphone this concept which we therefore use in other lines, is particularly useful for eleven layers.."in a similar way, this is therefore valid for the energy efficiency measures reifenhäuser blown film offers for their 11layer line under the keyword "blue extrusion". investments in thesis optionally sewectabwe measures pay off very fast due to the required high operating temperatures of 200 to 270 ° c. for example, producers who opt for highly efficient electric motors and gearboxes, insulation damping of cylinders and heater bands, or the customized design of a complete production line with a focus on targeted energy optimization, can save energy and reduce production costs.interested persons have the opportunity to witness the advantages of the 11layer evolution line live in the blown film technology center at the troisdorf site
