08 Jun 2017
Red, white, and blue plastic polymer granules.

The Role of Plastic Manufacturers in the USA’s Growing Industry There are approximately 90,000 different grades of plastic available to plastic manufacturers in the USA. Categories include adhesives, film, rapid prototyping, recycled, thermoplastic, and thermoset.  This ever-expanding list is due to the fact that plastic is one of the most versatile materials on the planet. […]

23 Nov 2025
A resin sitting within a plastic injection mold cavity.

Shrinkage plays a major role in determining the dimensional accuracy of molded plastic parts. Every resin shrinks differently as it cools, and factors like material type, cooling rate, and mold design all influence how much a part changes size after molding. Understanding these variables helps engineers predict final dimensions, reduce warping, and design tooling that […]

28 Oct 2025
Plastic bottles and caps lined up nicely after being manufactured.

What is sustainable injection molding? Sustainable injection molding refers to the practice of designing, selecting materials, and executing production in a way that minimizes environmental impact while maintaining quality and performance. Rather than simply making plastic parts, it means choosing smarter resins, optimizing energy usage, reducing waste, and extending product lifecycles so the part you […]

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 […]

14 Oct 2016
A checklist on a clipboard with checks made in red marker.

What should I know before getting an injection molding quote?  “I have the CAD drawing. What else could they possibly need?” Does this sound familiar?  Preparing for a plastic injection molding quote may not be as simple as you think.   “…I have the CAD drawing, what else could they possibly need?” While it is […]

27 Sep 2025
The overhead compartments on an airplane.

The aerospace industry hinges on precision, durability, and weight efficiency. Every component—from cabin panels to avionics housings—must endure extreme conditions while remaining as light as possible. Injection molding has become an essential part of aerospace product development. By enabling the production of durable, lightweight components with tight tolerances, it supports both performance and regulatory compliance. […]

17 Aug 2025

What is automotive injection molding? Automotive injection molding is the process of creating plastic car parts using specialized molds and injection machines. Molten resin is injected into precision molds, cooled, and released to form consistent, high-quality components. This method is widely used because it offers repeatability, speed, and the ability to manufacture complex shapes. The […]

26 May 2016
A pair of plastic, wireless headphones on a white background.

If you’re thinking of finding an alternative to plastic injection molding for your project, there are a few things you should consider during your search. Although injection molding has higher upfront costs, you’ll be glad you invested in your product once it picks up momentum on the market. Fabrication is less expensive initially, but it […]

14 Jul 2025
A CNC machine creates a piece of art.

CNC milling is widely used in industrial manufacturing, but its precision and repeatability also make it valuable in the world of fine art. Artists and fabricators increasingly rely on CNC technology to produce large, immersive installations that are both structurally sound and visually striking. While Rex Plastics specializes in injection molding rather than creating CNC […]

Plastic injection molding parts on a table.

When you need plastic parts for your product, you want a plastics manufacturer that is reliable, affordable, and produces high-quality parts. There may be a lot of options, so it is important to narrow down the field with the right criteria. What is a plastics manufacturer, and what do they do? A plastics manufacturer is […]