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Extruder Basic Mechanism
Jan 16, 2017

A screw turns in the cylinder and push the plastic. Screw was actually a slant or slope, Twining layer in the Center. Its objective is to increase the pressure in order to overcome the resistance. An extrusion machine is concerned, there are 3 kinds of obstacles need to be overcome: the solid particle (feed) on the cylinder wall friction and screw rotation for the first few laps (feeding area) friction between them; melt adhesion at the cylinder wall; melt when it is moving forward in its internal logistics of resistance.