Although the PET industry is around people every day, they ignore it too often. Medicines, drinks, packaging, and other products all require plastics, and it is likely that in the next year or so, the industry will be worth more than $55 billion. But you might not know much about the process behind stretch blow molding.
It might seem like plastic is mundane, but the process that companies use to produce them can be complex. Stretch molding involves expanding a polymer such as polyethylene terephthalate with air pressure and shaping it to the right form.
Different types of plastics have different properties that can impact the steps in forming the bottles. The manufacturers have to have the right tools, such as PET stretch blow molding machines.