If you've ever picked up a bottle of water, juice, or milk and noticed how light, clear, and sturdy it feels, you've held the result of a process called PET bottle stretch blow molding. It's one of those technologies that quietly runs behind almost every packaged drink on store shelves, yet very few people outside the plastics industry actually understand how it works, or why it's such a smart choice for manufacturers today. In this blog, we'll break down what stretch blow mo