Understanding the differences in how each melts is crucial to obtaining melt uniformity. Semi-crystalline polymers have a structure or ordered pattern of chain alignment. With amorphous polymers, chains are random—meaning they have no specific order or alignment, something like tangled pieces of string. The solid break-up that can occur when processing semi-crystalline materials lead to … Continue reading Injection Molding: Melting Amorphous vs. Semi-Crystalline Plastics