Extrusion molding is the main processing method for the recycling of waste plastics. Extrusion molding is mainly used to produce continuous profiles with a certain cross section, such as films, sheets, plates, rigid pipes, hoses, corrugated pipes, special-shaped pipes, wires, cables. , packaging tapes, rods, nets and composite films, etc., can also periodically repeat the production of hollow plastic parisons, such as bottles, barrels and other hollow containers. The recycled waste plastics are PVC, PE, PP, ABS, PA, PC, etc.
Extrusion molding has the following characteristics:
a. The structure of the extruder equipment is relatively simple, the cost is low, and the investment in the extrusion molding production line is relatively small; b. The output of the extruder molding products is relatively high; c. The length of the extruder molding products can be adjusted Infinite extension as needed; d. The extrusion molding production operation is relatively simple, the product quality is easier to guarantee, and the finished product manufacturing cost is relatively low; e. The extrusion molding production line occupies a small area, and the production environment is relatively clean; f. Extrusion molding The extruder has a wide range of applications and can be used for various thermoplastic molding, as well as mixing, plasticizing, feeding and pelletizing; g. The maintenance and repair of the extruder is also relatively easy and simple.
Extrusion molding equipment includes extruder, cooling box, tractor and other auxiliary devices, and the most basic and important equipment is extruder, among which the main extruders are single-screw extruder, twin-screw extruder , reciprocating single screw extruder and planetary screw extruder.
In the whole extruder unit, the extruder is of course a very important part, and its performance has a great impact on the output and quality of the product, but if there is no good auxiliary machine, the quality of the produced product will not be affected effective control.
Auxiliary machines are generally classified according to the products produced, such as film blowing auxiliary machines, pipe extrusion auxiliary machines, plate (sheet) auxiliary machines, wire drawing auxiliary machines, etc.Walthmac is is a professional manufacturer of plastic auxiliary equipment.Including gravimetric blender,gravimetric dosing control,thickness measurement guage,etc.
