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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05 Apr 2021
Woman operating an injection molding machine

Sprues and injection molding

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 […]

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07 Jan 2021

Plastic Finish Types: What You Need to Know

When creating a product or part using injection molding, it’s easy to get caught up in that piece’s actual production. Things like material, size, and complexity are all important factors to consider and have a huge impact on production. But what about the look and feel of your product? If your product or part is […]

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14 Nov 2020

An Insiders Guide to Plastic Manufacturers.

If you’ve got a plastic manufacturing project on the horizon, chances are you’ve tried to do some research into local plastic manufacturers. Finding the right company might seem like a simple enough task, but with all of the ads, misleading information, and foreign competitors, it can be tough to find a straight answer. That’s why […]

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07 Aug 2020
colorful samples of plastic materials

Which Plastic Material is Right For You?

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 […]

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10 Jul 2020

How Much Does an Injection Mold Cost?

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 […]

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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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13 Feb 2020
The metal plates of a plastic injection mold

The Plastic Injection Molding Process

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, […]

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11 May 2020

The Reshoring Index: Change Ahead

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 […]

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