An extruder is simply a machine used for the extrusion process. Using a system of barrels and cylinders, the machine heats up the product and propels it through the die to create the desired shape. Extrusion is a process, in which any material usually pellets, plastic, metal bar stock, dry powder or rubber is heated and pushed through a die. A die is essentially a mould that shapes the material in desired shape and size as it is forced through the small opening to the other side. It’s one of the most common ways to produce sheets and strips of stock metal, plastic and rubber shapes.
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