Changshu smooth plastic products factory is introduced single screw, twin-screw extruder

Plastic extruder is mainly composed of extruder, squeeze the trigger head, three rounds of calender, traction device, cutting or winding device, etc. The production of plastic sheet and plastic sheet extruder on the structure and other extrusion products used by extruder is no big difference, can be a single screw extruder, also can be a double screw extruder. Changshu well below da plastic products factory introduce these two kinds of extruder.



　　1. Single screw extruder for extrusion plate or sheet of single screw extruder screw diameter of 65 - general 200 mm, length to diameter ratio L/D is greater than or equal to 20. Need in extruder screw head set filter plate or filter, filter plate of pore diameter and pore number, filter mesh and layer number, thickness should be based on the varieties of the plastic and metal products. The exhaust type single screw extruder is suitable for HDPE, LDPE, PP, PVC thermoplastic extrusion molding, etc. Exhaust is single screw extruder is suitable for PS, PMMA, PC and other thermoplastic plastics extrusion molding.



　　2. Twin screw extruder for extrusion board, sheet of twin screw extruder is divided into parallel twin-screw and conical twin-screw two kinds. Parallel twin-screw extruder is the screw diameter is 80 - 140 mm, ratio of length to diameter L/D is greater than or equal to 21, the small end of the conical twin-screw extruder is 35 - diameter 80mm。 Twin screw extruder is suitable for PVC plate and sheet extrusion molding.