Crestwood Industries

  Plastic injection molding is a manufacturing process that turns raw plastic into precision-engineered parts at scale. It's used across industries from automotive to medical devices because it delivers consistent quality, tight tolerances, and fast turnaround times. Walk through any manufacturing facility in the Midwest, and you'll find plastic components everywhere. From the housing of a medical device to the clip inside a car door, plastic injection molding makes it all possible. It's one of the most reliable and efficient production methods available—and for good reason. What Is Plastic Injection Molding? At its core, plastic injection molding involves melting raw plastic pellets and injecting the molten material into a custom-designed mold. Once cooled, the mold opens to release a finished part—ready for assembly or delivery. The process sounds simple, but the precision behind it is anything but. Every mold is engineered to exact specifications, and every shot of mat...