In the bottling industry, cap seal liners are induction or pressure-sensitive liner discs that close and seal containers with an aluminium foil liner and a layer of polymer compatible with the material of the sealed package. The polymers used most for packaging are: Polyethylene (PE), both low- and high-density. Polypropylene (PP), partially crystalline. Polystyrene (PS), crystal, high impact, expanded or…
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