How to remove the impurities in the screw of extruder?

Generally speaking, we are extruding a period of time to pull out the screw, PE cleaning, and then use cloth wrapped long rod cleaning machine barrel things. It should be much better to repeat this a few times. Alternatively, you can choose to use the same resin as the main material you use when extruding to make the cleaning material, and add more filler (calcium carbonate) to the cleaning material. In addition, add more lubricants, such as PE wax, stearic acid, paraffin, etc.