Heating and cooling method for plastic extruder barrel

Heating and cooling are necessary for the smooth extrusion of plastics. In order to allow the plastic to always be extruded within the temperature range required by its processing, it is generally achieved by heating or cooling the temperature of the material in the barrel of the plastic extruder.

The barrel heating of the plastic extruder is to provide heat for plasticizing the raw materials in the barrel, and the barrel cooling is to prevent the raw material from generating excessive heat during extrusion and friction plasticization to increase the temperature. The alternating use of heat and cooling allows the barrel heat of the plastic extruder screw to be controlled within the process temperature range required for the plasticization of the raw material to ensure the normal continuous production of the plastic extruder machine. The heating mode of the barrel: resistance heating, electric induction heating, heating body heating. There are two types of cooling methods: water cooling and air cooling.

The heating method of shuliy mechanical plastic extruder machine adopts resistance heating method. The heater adopts cast aluminum heater, and the electric resistance wire is put into metal tube and filled with an insulating material such as magnesium oxide to make an electric heating rod, which is bent according to the required shape. And then cast into the aluminum alloy. Its small size, light weight, convenient assembly and disassembly, high heating temperature, long service life, moisture, shock and explosion-proof performance.

The Shuliy mechanical plastic extruder adopts the air-cooling method, mainly adopts air cooling, which is to use the electric blower to supply air, blow the wind to the barrel where the temperature needs to be cooled, take away the heat of the barrel, and make the barrel cool down. However, the cooling rate is slow.

The plastic extruder produced by Shuliy Machinery has the characteristics of simple structure, small thermal shock, no pollution, concentrated wind, high cooling efficiency, convenient installation and maintenance, etc. The quality is superior and widely used.