\n| \n Advantages<\/strong><\/b><\/p>\n<\/td>\n| \n Low shear, precise temperature control, positive displacement for stable output, excellent for processing dry-blend powders.<\/p>\n<\/td>\n | \n Simple design, low price, suitable for processing pre-pelletized PVC compounds. Low energy consumption, low noise, stable operation, and long life.<\/p>\n<\/td>\n<\/tr>\n | \n| \n Disadvantages<\/strong><\/b><\/p>\n<\/td>\n| \n The structure is more complex, and the price is higher than that of a single screw.<\/p>\n<\/td>\n | \n Material transportation relies on friction, making it unsuitable for low-density powders. High shear can cause degradation of rigid PVC.<\/p>\n<\/td>\n<\/tr>\n | \n| \n Scope of use<\/strong><\/b><\/p>\n<\/td>\n| \n The industry standard for high-volume, high-quality extrusion of rigid PVC profiles, pipes, and siding directly from powder blends.<\/p>\n<\/td>\n | \n Suitable for processing flexible PVC or pelletized rigid PVC compounds where high shear is less of a concern.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n <\/span>The most popular and practical option today is the counter-rotating twin-screw extruder<\/span><\/h3>\nExtruders required for different PVC applications are specifically designed. Due to the heat-sensitive nature of rigid PVC, profile and pipe extrusion processes almost exclusively use counter-rotating twin-screw extruders because they have the following characteristics:<\/p>\n | | | |