Plastic Injection Molding

Regrind can be a useful option for injection molded plastic parts, but it is not automatically appropriate for every application. Reusing production scrap can reduce material waste and, in some cases, material costs. However, regrind can also behave differently from virgin resin depending on the plastic, its processing history, and the requirements of the finished […]

Venting in injection molding is one of the most important yet often overlooked aspects of mold design. While much attention is typically given to part geometry, material selection, and tooling construction, proper venting plays a critical role in ensuring consistent part quality and efficient production. As molten plastic enters a mold cavity, the air already […]

Since its inception in the 1960s, to its acceptance in the 1990s, the hot runner system has challenged tradition across the plastic injection molding business. With their increased cycle speed and decreased waste, hot runners are an attractive solution to many looking to diversify their injection molding process.   What is a hot runner injection […]

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 […]

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 […]

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 through which the plastic then flows into runners and gates. In general, the entire assembly is commonly known as the sprue.  The whole system […]

Ultraviolet (UV) exposure is one of the most common environmental factors that can impact the performance and lifespan of plastic parts. While many plastics perform well in controlled indoor environments, prolonged UV exposure can lead to visible damage and mechanical failure over time. For engineers and product designers, understanding how UV exposure affects plastic materials […]