Plastic Injection Molding Process

The plastic injection molding process consists of four main steps. The manufacturing process begins by converting a solid polymer into a liquid form. At room temperature, the polymers used for injection molding, such as nylon and acrylic, are hard and must be melted so that they can be shaped.

Subsequent Stages in the Plastic Injection Molding Process

After melting the polymer into its liquid form, the next stage is to inject the material into a cast. After injecting the polymer into the mold, you need to chill the cast. This will cause the liquid polymer to revert to its solid form. When the polymer has hardened completely, you can remove it from the cast. The combination of these steps requires that you take care in designing the cast to ensure that the liquid polymer is able to fill it completely and can be removed from it with tools when hardened. Repeating these four processes, companies can produce short or long runs of their products. In addition to using these steps to produce bulk quantities of products for wholesale and retail sale, you would also need to follow them in the development of prototypes. The same steps and tools are used in applications ranging from consumer electronics to medical devices.

If you need to produce plastic prototypes or products, you can find different models of the machinery needed for manufacturing at Morgan Industries, Inc.. For more information about the three different models of machinery they carry, you can contact them at (562) 634-4074 or toll free at (800) 222-6929, or send an email to the sales department.