25 Jul 2022

What is the Parting Line in Injection Molding?  An injection molding parting line is visible on all injection molded plastic parts. The two halves of a mold create a parting line between them when they clamp shut. While molds need to seal completely during the process, a thin visible line can always still be found […]

14 Jun 2022
Different plastics and color types for plastic injection molding.

What is Plastic Injection Molding? To create plastic parts, manufacturers use a process called plastic injection molding. Plastic injection molding involves injecting molten plastic into a mold to form the product. The plastic then cools in the shape of the product, creating the final product. Once you understand what plastic injection molding is, you can […]

09 May 2019
plastic parts made from plastic injection molding

From toy LEGO blocks to space shuttle turbine blades, plastic injection molding touches our lives every day. But what is plastic injection molding? Why is it so popular? And is the process right for your manufacturing needs?   What is injection molding? Injection molding is a common manufacturing process for producing large volumes of parts […]

close-up of small, blue plastic parts

Low-volume injection molding is the best option if you are looking to make parts in quantities of 100,000 or fewer. It’s used for mass-producing identical parts before committing to a long-term molding setup, whereas other parts may never need to be produced in higher volumes. This form of molding is one of the most common […]

20 Nov 2021
Plastic molding machinery in a factory.

What’s the best way to make sure that your injection molding is cost-effective, efficient, and consistent? Short-run molding! This specialized process involves using molds made from less expensive aluminum or steel. You can expect many of the same benefits of injection molding when producing small runs without sacrificing quality or performance; it’s an easy choice […]

close-up of small, blue plastic parts

Injection-molded plastic parts   Injection molding can create parts used in all sorts of projects and industries. From cars to computers, motorcycles to models, plastic injection molding is how modern products get made. In fact, plastic parts made with injection molding surround each of us every day. Plastic parts are so appealing to businesses because […]

07 Oct 2020

A Guide to Plastic Molding – Manufacturing and Process.   Plastic molding generally refers to plastic injection molding. This process is used to create plastic parts by injecting molten plastic into a metallic mold. After the plastic cools, the mold is opened, and the newly formed plastic part is released.    Common uses of plastic […]

  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 […]

05 Apr 2021
Woman operating an injection molding machine

What is a sprue? A sprue is a channel through which molten plastic flows into the mold. Specifically, the sprue is the entry point of the molten plastic, the vertical passage which plastic then flows through into runners and gates. In general, the entire assembly is commonly known as the sprue. The whole system is […]