The injection molding process makes it possible to manufacture a multitude of different products and parts. This process has several steps and each step offers employment opportunities. The Equipment must be designed, built and maintained. The equipment needs trained operators. The products to be molded need to be designed. The materials to make the products and parts need to be obtained, transported, and handled. The resulting products must be packaged, stored, and shipped to their destinations.

What Is Injection Molding?

Injection molding is a process in manufacturing where parts are made by injecting a choice of materials into a mold. Injection molding is very versatile in both the materials it can use and the wide variety of parts and products it can produce. Some materials that can be used in injection molding include glass, metals, elastomers, thermoplastics or thermosetting polymers, and confections. One of these materials is poured into a heated barrel, mixed, and then forced into the mold cavity. Once in this cavity, the material is cooled and hardens to the shape of the cavity.

The part and cavity or mold must be carefully designed by an industrial designer or an engineer. Then, molds are built by a tool maker or mold maker out of a metal such as steel or aluminum. The cavity in the mold must be precision-machined to make the features in the desired part. All of these processes must be carried out by highly trained professionals. People who receive injection molding training can work in the manufacturing of many products and parts.

Injection Molding Applications

This manufacturing process is used to make many different products and parts including wire spools, bottle caps, packaging, automotive components, mechanical parts like gears, and most plastic products found in today’s markets. When metals are used, the process is called die-casting. Die-casting produces an additional collection of products and parts for machinery and other items.


People who get injection molding training can choose which part of the manufacturing process they wish to work in. Some people may want to train as industrial designers or engineers. Others may want to be material handlers or machine operators. Still others may want to specialize in maintaining the injection molding machines. Training facilities will help guide students. For more information on training go to the website.