In this second post we will focus on a very common issue that appears in injection processes: the emergence of black spots in the surface of plastic pieces. These spots are visible in the surface of these pieces and there may be many of them, as well as appear randomly, which hamper processes and threaten their efficiency levels.
What are these black spots?
They are usually small pieces of dirt or charred material that were dragged from the injection machine’s spindles or cylinders. These are incorporated as visible defects in the final piece.
Why are they caused?
Solutions
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