Plastics extrusion
（重定向自Coextrusion）
![Cross-section of a plastic extruder to show the screw](/Images/godic/202501/05/Extruder_with_sheet_die3132.jpg")
![Pipe Extrusion](/Images/godic/202501/05/Production_processes3132.png")
![Plastic extruder cut in half to show the components](/Images/godic/202501/05/Extruder_section3132.jpg")
![Extruder Screws From Boston Matthews](/Images/godic/202501/05/Extruder_Screws_From_Boston_Matthews3132.jpg")
Plastics extrusion is a high-volume manufacturing process in which raw plastic is melted and formed into a continuous profile. Extrusion produces items such as pipe/tubing, weatherstripping, fencing, deck railings, window frames, plastic films and sheeting, thermoplastic coatings, and wire insulation.