The soft drinks industry was the main driving force behind the development of the polyethylene terephthalate (PET) bottle. Before 1960, almost all carbonated soft drinks were packaged in small returnable glass bottles. These have now been almost completely replaced with PET bottles, which are light, robust and reusable. PET bottles can be produced in a one-or two-step process. The Italian company SIPA offers its customers both technologies to

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