Film Extrusion

Film is divided into two subcategories: cast, or flat film; and blown film. In the former, hot plastic is extruded through a flat, slit die onto a polished chill roll where it is quenched, pulled to a second set of rolls to cool the other side, then wound. In blown film, plastic is extruded into a cylindrical die, then inflated to form a bubble, which is ultimately cooled and collapsed. Films can be either single or multi-layer. Most are based on polyethylene. Bags are one primary example of film extrusions.

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Nordson Expands Worldwide Capabilities for PPS Business Unit

Parent firm establishing Polymer Processing Systems group as global ‘go-to’ source for multiple components required by companies across the plastics manufacturing value chain.

Features

NPE2018 New Technology Focus: Film & Extrusion Coating

Check out what’s new in blown and cast film and extrusion coating at the big plastics industry trade show. 
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Extrusion: Biax Lines for ‘Bone-In’ Meat Bags

Equipment also comes with materials-selection and processing know how.