How To Clean The Extruder Screw!

1. Resin cleaning method

Polyester resin or epoxy resin is used for cleaning. It is generally used for cleaning new equipment or when the extruder has been used for a period of time. Because some materials remain on the screw or barrel and gel, the material extrusion speed slows down, and the color difference of the color change variety is large, this method can be used.

2. Disassembly and cleaning

1. Manually add washing material from the feed port until the color of the extruded material strip is the same as that of the washing material pellets, stop feeding, empty the material, and stop the rotation of the twin-screw extruder screw;

2. Open the screw extruder die head and start cleaning;

3. Turn the twin-screw extruder screw and remove the orifice plate to discharge the residual washing material in the barrel and clean the orifice plate;

4. Stop and pull out the screw to observe whether it is cleaned, and manually remove the residual material on the screw. Reinstall the screw; add new material to flush the residual washing material in the barrel and stop the screw rotation;

5. Install the orifice plate and die head of the twin-screw extruder to complete the cleaning operation of the twin-screw extruder.

3. Fire Baking Method

Burning or baking with fire to remove plastic fixed on the screw is the most common and effective method seen in plastic processing units. Use a blowtorch to clean the screw immediately after use. Since the screw carries the heat from the processing experience, the heat distribution of the screw is still uniform

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