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Rumah> Blog> What should I do if there are air holes in the finished injection molding?

What should I do if there are air holes in the finished injection molding?

November 12, 2021
In the injection molding process, sometimes there are many small bubbles of the finished product, not only impact strength and mechanical properties of the finished injection molding, the appearance of the finished product price values are also greatly reduced, so when bubbles are finished, several factors can be checked, and Do the processing.
Usually, when the thickness of the finished product is different, or when the mold has protruding ribs, the cooling speed of the plastic in the mold is different, the degree of shrinkage is different, and bubbles are easily formed, so special attention must be paid to the design of the mold.
In the use of raw materials, if the plastic with moisture, in the melting of the plastic after the decomposition of the rubber, the tolerance of the injection screw is too small, the air easily enters the cavity to form bubbles, the following is the possible causes and treatment.
Different degrees of shrinkage easily form bubbles



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Author:

Ms. He Lichun

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