“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.
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 […]
Since it seems like we’ve been talking a lot about ourselves these days, we wanted to shift our focus a bit to what we’re doing for our customers. They are, after all, at the heart of our business. We’re proud of what we’ve accomplished for them, and judging by our retention rate, they’re happy too. […]
While a change to a product after launch can be quite expensive, making changes during the design stage is relatively inexpensive. Plastic part design is no exception. With today’s CAD software, being able to visualize, test, and change designs has never been easier. The Cost […]
There are many ways to produce plastic parts and if your anticipated sales volume is high enough, plastic injection molded part manufacturing can be the most cost effective way to get the job done. If you’re ready to pull the trigger on your project, consider Rex Plastics. Learn more about our plastic injection molded part […]
Rex Plastics Product Development Plastic Part Design Fundamentals Draft Angle In this edition of our Product Development series, we’ll briefly overview a fundamental concept for plastic part design, ‘draft angle’. Draft angle, or ‘draft’ is essential for all plastic injection molded products. It facilitates the removal of the part from the mold. Adding draft […]
Rex Plastics Product Development Plastic Part Design Fundamentals Gates and Parting Lines Gates Each plastic part design must have a ‘gate’, or an opening that allows the molten plastic to be injected into the cavity of the mold. There are several styles of gates that are commonly used in molding. Care and consideration should […]
Rex Plastics Product Development Plastic Part Design Fundamentals Ribs and Bosses Rib Design Ribs are a great way to add strength and stiffness to a part while keeping material consumption to a minimum. However, a word of caution: ribs can cause sink marks to develop where they intersect the main wall. A rule of thumb […]
Rex Plastics Product Development Plastic Part Design Fundamentals Injection Molding Plastic design is the building block of plastics manufacturing, and can make or break not only the initial investment required to get a product launched, but the long term profitability of that product. In this series we will discuss the fundamentals of this very important […]
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