03 Sep 2020

  Get the custom injection mold you need   Rex Plastics can create custom, high-quality injection molds for nearly any application. These molds allow clients to create custom plastic parts at scale, for the lowest possible cost per unit. For more information about the cost of injection molded parts, check out our blog. From toys […]

07 Aug 2020
colorful samples of plastic materials

Plastic injection molding can use many different types of plastic. The most common are polypropylene, polyethylene, PVC, and acrylonitrile butadiene styrene (ABS). These materials are durable and affordable, making them well suited for a number of different applications.    Materials Used for Injection Molding   When choosing a material for your project, it’s important to […]

10 Jul 2020

There are several factors that will determine your injection molding cost, including: Part size Complexity Material Quantities   Material selection is another consideration in determining the cost of injection molded plastic parts. In general, the plastic used to create the product is determined by what the product will be used for. Different plastic materials have […]

06 Jul 2020

What is Insert Molding?   Insert molding is the process of injecting plastic around an object, usually metal. This creates a single piece using two or more materials. Common inserts include things like metal pins and threaded rods.   Why use insert molding?   Insert molding is widely used in manufacturing today because it allows […]

13 Feb 2020
The metal plates of a plastic injection mold

The plastic injection molding process The basics of the plastic injection molding process: melted plastic injects into a metal mold. The plastic material cools inside the mold and hardens into the finished product. The product releases when the two halves of the mold separate and the plastic ejects.  How does injection molding work? Put simply, […]

11 May 2020

The Reshoring Index: Change Ahead   During these trying times, it can sometimes be helpful to take a step back and look at the bigger picture. Even before the current COVID situation, manufacturing was undergoing some significant shifts that may have far-reaching implications for the years to come. These changes are documented in the Reshoring […]

04 Mar 2020

Injection molding material cost If you spend $20,000 on a steel mold and then use that mold to create 400,000 parts, the cost per part would end up at 5 cents. There’s more to it than that, however, as the labor and material used will also have an impact on the total investment.  Common injection […]

10 Dec 2019

What is an Overmold?   Overmolding uses two or more different materials to create a single product. For example, overmolding can create a plastic toothbrush with a soft, comfortable handle. The central, usually harder piece, is called the substrate, while the outer material is known as the overmold material.   When creating an overmolded piece, […]