Co-extrusion is a type of plastic extrusion where two or more materials are simultaneously extruded and combined to create a single finished product. This process allows for a variety of unique material combinations to achieve specific end-use properties. The materials are fed into separate extruders and are then combined at a specific point before being extruded through a common die.... https://www.reevesextruded.com/processes-and-capabilities#Extrusion