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Three common methods of heating and shaping plastics include extrusion, injection molding, and blow molding. Extrusion involves melting plastic pellets and forcing them through a die to create continuous shapes like pipes or sheets. Injection molding injects molten plastic into a mold to produce detailed and complex parts, while blow molding uses air pressure to form hollow objects, such as bottles, from heated plastic. Each method is utilized based on the desired shape, size, and production volume.

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2w ago

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