COMPARISON OF CAST FILM AND BLOWN FILM 9 - LAYER BARRIER FILM, 2007 European PLACE Conference
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Above-average growth rates in the field of cast film production and stretch film, PP film and barrier film in particular, have promoted the cast film extrusion process. Manufacturers of extrusion equipment have followed this trend and further developed equipment and processes in terms of quality and output. Being a supplier of blown film and cast film extrusion lines, Windmöller & Hölscher has been asked repeatedly by film producers to present a comparison between the blown and the cast film process for the production of barrier films. So a comparison of both extrusion processes for 9-layer film production is made with the focus on systems engineering, die design, film products and economic considerations.