Heat generation in the extrusion production process of the extruder

Extruder in the extrusion production process of heat generation (heating) external heating is currently commonly used in the extruder is electric heating, but also a relatively clean, easy to control the heating method. (Of course, there are heat transfer oil, electromagnetic induction, etc., not discussed here.) That is, the electric heater (with resistance wire) is packaged on the barrel, and the material is heated and melted due to the joint action of heat conduction, convection and radiation.

2022-05-06

Extruder deceleration principle

Extrudable plastics are thermoplastics which melt when heated and solidify again when cooled. Where the heat of melting plastic comes from. Feed preheating and barrel/die heaters may play a role and are very important at start-up, but the motor input energy-the frictional heat generated in the barrel when the motor rotates the screw against the resistance of the viscous melt-is an important heat source for all plastics, except small systems, low-speed screws, high melt temperature plastics and extrusion coating applications.

2017-06-06

Influence of Extruder Filter on Plastic Extrusion Molding

During the extrusion process of the extruder, the molten material is fed to the die through the filter screen. The filter makes the material filter and can improve the mixing effect of the material.

2017-06-06