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The main principle of plastic bag production is to put the raw materials into the feeding barrel of the extruder, so that the PE raw materials enter the extrusion barrel. After being heated, mixed, and rubbed, the PE particles become molten. Then, using the screw pressure, the molten material is extruded from the mold head and blown into a film tube by air. After the film tube is cooled, it is formed into a forming curtain, a guide wheel, and then rolled into a neat film roll using a rolling table.
