From the huge numbers of synthetic polymers available, a more limited selection is typically used for flexible packaging films. This section will name them, describe some key characteristics and list primary uses.
While some of these polymers are commonly used in monolayer films, many find best usage in coextruded films, where thin well placed layers efficiently utilize their unique advantages while minimizing cost or detrimental impacts on the film. Some flexible packaging films (single or multi-layer) are used as is, while others are combined with other materials, such as other films, foil, paper, paperboard or thermoforming sheet.
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