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What is the cleaning method for the extruder screw?

When the extruder needs to clean the screw, it is usually because the color is changed or there are black spots after the machine is turned off. There are two common methods: one is to wash with raw materials or nozzle materials, and the other is to directly pull out the screw for polishing and cleaning.

 

The method of pulling out the screw affects the precision of the equipment. Pulling out the screw for a long time will affect the fit between the accessories. Polishing the screw will also affect the surface smoothness of the screw. It is easier to leave resin in the subsequent production, which will cause the material to decompose and generate carbon deposits.

 

However, washing machines with raw materials takes a long time and requires a lot of cleaning materials, which will inevitably affect the efficiency of production.

 

So what is the most effective way to clean the extruder screw?

The following methods are recommended:

 

1. For color change: use professional screw cleaning materials for machine cleaning, which can save time and the amount of cleaning materials, especially for color lines, weld lines, etc.

 

2. Aiming at the problem of black spots during shutdown: We recommend using a screw cleaning material that is not easy to carbonize to stay in the screw during shutdown, fill the screw, and then replace it with raw materials when starting up. The advantage of this is to fully replace the original material , to avoid carbonization of the material in the screw, and also to bring out the original impurities in the screw. This kind of cleaning material is called shutdown maintenance material. We may wish to search.


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