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Choose a Page:*How is plastic made into shapes?*How is coal mined?What is paper made from?How is cloth made on a loom?How is a newspaper printed?How is iron extracted from iron ore? How is plastic made into shapes? In blow moulding, a piece of hot plastic tubing is placed in a mould. Air is blown into the tube, pushing it out into the shape of the mould. In vacuum moulding, plastic is placed over a mould and heated. Air is removed, and the vacuum pulls the plastic into the mould.   Previous: Back Book: Best Ever Q&A Section: Science & Technology Chapter: Industry