The stretch film industry has grown at phenomenal rates over the past 6-8 years. During that time, stretch film has evolved from monolayer to three layer and now commonly a five or seven layer product. This film is processed on equipment that varies in size and width along with other technological differences. This paper reviews the stretch film industry, outlines the major stretch film properties, and shows (by a case study comparison of two similar cast systems) how equipment and process variables can affect stretch film properties.
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