The properties of thermosets and thermoplastics are quite different—but the similarities and differences are often asked about. The primary difference in these two plastics comes down to heat and chemical resistance. Heat resistance is the primary function of a thermoset material, while thermoplastics—which are much more common—can only withstand heat to a certain degree. It’s worth noting that plastic injection molding companies typically do either thermoset or thermoplastic injection molding, but rarely do they handle both.
The plastic injection molding process is extremely complex with (quite literally) thousands of moving parts. As a manufacturing engineer, it’s not critical for you to know every finite detail of mold-closing mechanisms or the difference between every polymeric substance used in injection molding—but understanding the following 10 terms will make a conversation with a potential plastic manufacturing partner much simpler.