A na-eme bọọdụ PVC na-egbuke egbuke maka arịa ụlọ site na Co-extrusion usoro, nke bụ ụdị nkwalite nke usoro extrusion nkịtị.Igwe ụfụfụ na-ejikọta ọnụ na-eme ka mpempe akwụkwọ ahụ jikọta ya na akwa atọ: akwa abụọ dị n'èzí nke PVC siri ike, na etiti etiti bụ PVC ụfụfụ.