The composition and working principle of plastic recycling granulator

The main body of the plastic recycling granulator is an extruder consisting of an extrusion system, a transmission system and a heating and cooling system.

The extrusion system comprises a screw, a barrel, a hopper, a machine head, and a mold. The plastic is plasticized into a uniform melt by an extrusion system, and continuously extruded by the screw under the pressure established in the process.

1.Screw: It is the main component of plastic recycling granulator extruder, which is directly related to the application range and productivity of the extruder. The screw is made of high strength and corrosion resistant alloy steel.

2.Plastic recycling granulator barrel: It is a metal cylinder, which is generally made of alloy steel with high heat resistance, high compressive strength, strong wear resistance and corrosion resistance or alloy steel lined with alloy steel. The barrel is matched with the screw to realize pulverization, softening, melting, plasticizing, venting and compacting of the plastic, and continuously and uniformly conveying the rubber to the molding system. The length of the general barrel is 15 to 30 times its diameter, so that the plastic is fully heated and fully plasticized.

3.Hopper: The bottom of the hopper is equipped with a cutting device to adjust and cut the flow. The side of the hopper is equipped with a sight hole and a calibration metering device.

4.Handpiece and mold: The machine head is composed of an alloy steel inner sleeve and a carbon steel jacket, and a molding die is arranged in the machine head. The function of the machine head is to transform the rotating plastic melt into a parallel linear motion, which is evenly and smoothly introduced into the mold sleeve and imparts the necessary molding pressure to the plastic. The plastic is plasticized and compacted in the barrel of the plastic recycling granulator. The porous filter plate flows into the head forming mold through the neck of the neck through a certain flow path, and the core mold sleeve is properly matched to form an annular gap with a decreasing cross section. The plastic melt forms a continuous dense tubular coating around the core.

Granulator is widely used in the polystyrene recycling industry, and a professional granulating machine will make high quality recycled GPPS. INTCO recycling is the company that can offer you high quality recycled PS pellets.

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