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What are the cleaning methods for the co-rotating parallel twin-screw extruder barrel?

by:TENGDA     2022-09-24

If the plasticizing temperature range of the residual material in the co-rotating parallel twin-screw extruder barrel is higher than the plasticizing temperature range of the material to be replaced, the barrel should be heated up to the plasticizing temperature range of the residual material in the barrel, and the residual material should be heated to the plasticizing temperature range of the residual material in the barrel. Clear. The nozzle material can be added for cleaning later, and new material can be put into production. If the product requirements are high, the first few molds of the new material can be scrapped. If the plasticizing temperature range of the new material to be replaced is higher than the plasticizing temperature range of the residual material in the barrel, the barrel and nozzle can be heated to the lower plasticizing temperature of the new material, and then the new material is added and the air is continuously emptied. Inject until there is no residue in the barrel.


If the raw materials for injection products are frequently replaced or the plasticizing temperature range of the residual material in the barrel and the refueling material is quite different, in order to save raw materials and improve work efficiency, it is more economical to use a barrel cleaning agent. The special cleaning agent is a kind of material similar to rubber material. It does not melt at high temperature in the barrel. It is in the form of softened micelle in the thread groove of the screw. Cleaned up inside.


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