Twin-screw extruder

With the development of the polymer processing industry, more and more and more high requirements are put forward on the molding and mixing of polymer materials. The single screw extruder can not meet these requirements in some aspects. For example: with a single screw extruder filling modified and glass fiber reinforced modified, mixed dispersion effect is not satisfactory. In addition, single screw extruders are especially unsuitable
Powder material processing. In order to meet the polymer processing requirements of the mixing process, especially the processing of hard PVC powder, twin-screw extruder since the 20th century
After the development of Italy in the late 1930s, it has been greatly developed after more than half a century of continuous improvement and improvement. Abroad, at present, twin-screw extruder has been widely used in polymer processing field, accounting for 40% of the total number of extruders. Hard PVC pellets, pipes, profiles, plates are almost all processed using twin-screw extruder molding. As a continuous mixer, twin-screw extruder has been widely used for polymer blending, filling and enhanced modification, but also useful for reaction extrusion. In the recent 20 years, the development of polymer materials blending and reactive extrusion technology has further promoted the increase of the number and types of twin-screw extruders.