plug test

Trials Reveal Impact of Plug Design on Part Quality

It is one of our favorite thermoforming questions: “Which is more important – the plug material or the plug geometry?” It’s really a trick question, though, because the answer is usually, “It depends!” CMT Materials was recently approached by a customer with a stubborn plug mark on a cup. Together, we performed a test with 2 types of HYTAC® plug assist where multiple variables were involved.