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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Clear Your Calendars for Plastics Technology 'Tech Days'

Beginning Oct. 8, we will be bringing exclusive, live, online technical content on a wide range of processing topics that you can access for free.

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PE Film Market Snapshot 2020: Candy

With an AAGR of 11.8%, PE resin consumption is anticipated to reach 52.9 million lb in this market by 2022.