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How to solve the paste phenomenon in PVC profile extrusion die?
The paste in the mold generally has the following four reasons
First: It may be that the mold design is unreasonable, and there may be a dead corner in the runner. The PVC plastic accumulates in this dead corner for a long time and does not flow, and it is easy to paste.
Second: the mold temperature is too high is also the reason!
Third: Improper process operation, which generally occurs, I personally think that the temperature of the barrel can be appropriately increased, but the temperature of the oil can be appropriately reduced in the transition section, and the temperature of the mold can also be appropriately reduced.
Fourth: The formula is unreasonable, and the lubricant system may be wrong.