Sinks

The goal of every plastic injection mold and parts manufacturer is to have each mold and part come out without issue or defect. However, like with all manufacturing processes, these flaws can be introduced due to a myriad of situations. Today, we’re looking at a common issue with plastic injection molding known as sink marks – or sometimes just “sinks” – that often can show underlying issues with the mold and polymers of the product. In this blog, we’re going to review the sink defect, its causes and solutions, and how to avoid it in the first place.

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