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 […]

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, […]

18 Sep 2019

Rex Plastics Customer Showcase – Polycarbonate Orange Screw   Overview The Orange Screw is a heavy-duty ground anchor offered by a company sharing the same name, Orange Screw. It’s injection molded using recycled polycarbonate, which is a strong and impact-resistant polymer commonly used in electronic, automotive and construction applications. Rex Plastics has been the sole […]

What is a CNC Machine and How Does it Work?   CNC Machines are some of the most important tools used in modern manufacturing. They can perform an incredibly diverse range of tasks and are essential for product design. Because of the complexity of CNC machines, it can be easy to get lost when trying […]

25 Jul 2019

We are blessed to be living in the age of information. Whether it’s historical publications, how-to videos, scientific data, conspiracy theories, or suppliers for a product you’re looking for, most people in America have it all at their fingertips. Unfortunately, this can also be a curse and create “decision constipation” for some. So, the question […]

22 Feb 2016

Rex Plastics Product Development Plastic Part Design Fundamentals Sink and Warp Plastic Part Design – What is Sink? Part manufacturers should always give careful consideration to the materials used in plastic part design, as this decision will have significant consequence in the sink & warp of plastic injection molded parts. Why is this? During the […]

19 Mar 2017

When it comes to plastic part manufacturing, injection molding is among the least expensive processes available. Due to the initial investment of the mold, return on investment should be an important consideration when making the decision on what type of part manufacturing process to use. Part Manufacturing Considerations Part manufacturing volume is a major consideration. […]

26 Feb 2016

“Rex Plastics was very helpful in the product development process. They helped me with part design, material selection and made many improvements to the sample product I originally brought them. In fact, the design changes their engineer suggested literally cut the injection mold cost in half.” says Tom Arnold, owner of Powder Cord Pouch.

10 Aug 2016

Rex Plastics Product Development Plastic Part Design Fundamentals Ejection and Surface Finish   Ejection When it comes to successful plastic part design, ejection and surface finish considerations are critical factors to consider.  The most common way to remove a part from the mold is through ejector pins. They apply a force to eject a part […]

We all start somewhere. Even a business like Rex Plastics, rapidly closing in on our fiftieth anniversary, had humble beginnings. What makes us different? We understand the challenges faced by startups because for all our successes, we’ve never forgotten where we came from. That’s just one reason why we’ve been able to help so many […]