how plastic sheets form in industeries?explain
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A: Plastic sheets are made by squeezing molten polymer through a narrow slit in a process called film casting, says Tim Osswald, a professor of mechanical engineering at UW-Madison
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Today, however, most plastics are made from petrochemicals including natural gas. Plastics are organic materials that contain such elements as carbon (C), hydrogen (H), nitrogen (N) chlorine (Cl) and sulfur (S). They are made from raw materials such as oil, natural gas and coal.
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