30 Jun 2023
Many colored plugs, screws, valves, fittings, pipes, plastic adapters.

How to Reduce Flash in Injection Molding

When making injection molded plastic parts, there are many things that can go wrong. It’s vital to tune injection molding machines and molds for parts to the right specification to prevent such errors. At Rex Plastics, we understand the importance in producing the highest rate of quality parts that we can. Minimizing rejected parts saves […]

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25 Jul 2022

What is Parting Line in Injection Molding?

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 […]

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20 Dec 2021
close-up of small, blue plastic parts

Low-Volume Injection Molding: What You Need to Know

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 […]

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20 Jun 2021
Prototype made out of metal.

How To Create The Perfect Plastic Prototype

Manufacturing plastic prototype – where to start The first step in every product’s life is prototyping. Whether it’s a brand new idea or an improvement on an old design, prototyping allows designers to see and test a product before it goes to production. From consumer goods to industrial, every field across every industry benefits from […]

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11 Oct 2021
close-up of small, blue plastic parts

Plastic Parts: An Intro to Manufacturing

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 […]

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16 Aug 2021

How to Mass Produce a Product | The Ultimate Guide 

What are some examples of mass production?    Mass production is what takes a garage invention and puts it on shelves around the world. It is the process by which products are replicated at scale. It allows you to turn a dream into a business and a passion into a successful product. Almost everything you […]

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07 Jul 2021
white rapid prototype ball

How to create the perfect plastic prototype

Manufacturing plastic prototypes – where to start The first step in every product’s life is prototyping. Whether it’s a brand new idea or an improvement on an old design, prototyping allows designers to test products before going to production. From consumer goods to industrial, every field across every industry benefits from the ease and affordability […]

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03 Sep 2020
metal mould or plastic injection mold setup on high pressure injection molding machine

Custom Injection Molding

  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 […]

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06 Jul 2020

A Practical Guide to Insert Molding

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 […]

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10 Dec 2019

Overmolding: A Beginners Guide

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, […]

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