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    Brief description: plastic extruder features

    Information sources: | Release date: 2018-08-16 | Browse volume:
    Key word:Brief description: plastic extruder features

    Plastic extruders are also one of the types of plastic machinery. The extruder can divide the nose into a right angle head and a bevel head according to the direction of the flow of the head and the angle of the center line of the screw. The outer casing of the machine head is generally fixed on the fuselage by bolts. The mold inside the machine head contains a core holder, and then the nut is fixed to the inlet port of the machine head, and the inside of the core seat is also mounted. The core, and the core and the core holder have holes in the center for their function to pass through the core. Depending on the type of pressurization method, the extrusion process can be divided into continuous extrusion and intermittent extrusion. The equipment used in the former is a screw extruder, and the latter is a ram extruder. In this case, the screw extruder can be roughly classified into a single screw extruder and a multi-screw extruder by the number of screws.

    The screw is the heart of the extruder. The screw extruder relies on the pressure and shear force generated by the rotation of the screw, so that the material can be fully plasticized and uniformly mixed, and formed by die molding. It is a key component of the extruder. The performance of the screw determines the productivity, plasticizing quality, dispersion of the filler, melt temperature, power consumption, etc. of the extruder. It is the most important part of the extruder, which can directly affect the application range and production efficiency of the extruder. Through the rotation of the screw, the extreme pressure of the plastic is generated. The plastic can move, pressurize and obtain part of the heat from the friction in the cylinder. The plastic is mixed and plasticized during the movement of the cylinder, and the viscous flow state The melt is shaped while being extruded to flow through the die to obtain the desired shape. Like the barrel, the screw is also made of a high strength, heat resistant and corrosion resistant alloy.

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