Grooved feed sleeve are widely used to extrude PP & PE. Grooved feed extruder produce 30-40% higher output per rpm compared to same size smooth bore extruder. A grooved feed section improves solid conveying and increases extruder pumping action. It also is lowering processing melt temperature. Grooved feed sleeve comes with internal water cooling section to prevent resin from melting in grooved section.
Grooves inside the internal diameter of grooved feed are taper having maximum depth at feeding side to zero depth towards die side. Nitrided sleeve are widely used for wear resistance but in some abrasive polymer bimetallic hardened internal grooved bush are used to increase life of grooved sleeve.
Range: 35mm to 150mm internal diameterDownload now