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Causes for Black Specks in Your Injection Molds

Causes for Black Specks in Your Injection Molds

When you see black or brown specks on your molded part, you’re probably dealing with material that has been severely degraded. Sometimes called carbon buildup, black specks are sometimes mistaken as material contamination. While contamination can be a cause, you’ll...
Troubleshooting Contaminated Molds

Troubleshooting Contaminated Molds

What Is Contamination in Injection Molding? Contamination appears as discoloration, streaks, splay, delamination and other types of defects. Because it’s such a broad area with multiple possible culprits, is best to start with the usual suspect: the material brought...