Plastic film and a method for production thereof

摘要

A plastic film (1) has one or more longitudinal bands (3) with a thickness of 3µm - 50µm thicker than the main portion of the film (1). Each thicker band is formed integral with the main portion of the film (1). Each band is in the form of a single ply. A method for producing the film (1) includes that a molten polymer or polymer composition is extruded in a single ply (7) and cooled, so that a film (1) is formed. The polymer ply (7) is cooled in one or more narrow areas before the main portion of the film (1) is cooled. The narrow cooled areas correspond to the width and position of the thicker longitudinal band or bands. Some typical uses of the film (1) include wrapping pallets and packaging agricultural produce.