Most of the injection molding tools contain air inside the cavity when tightly closed. When plastic is injected the air needs to squeeze and go out somewhere. Mold venting enables air to pack and free up space for the plastic. The Problem With Poor Mold Venting Failure to vent a mold properly increases mold temperatures and increases the melt’s pressure. The combination of these issues can extremely heat the oxygen in the mold, causing an array of visual defects and part int

No matter the size of a production run, the presence of blemishes on the finished product leads to unhappy clients. Weld lines, which are also referred to as knit lines, are among the most common of these blemishes. This article looks at the issues presented by a weld line in injection molding and the techniques manufacturers can use to avoid them. Why You Need to Avoid Weld Lines Weld lines lead to two significant issues with an injection molded product. The first is that th

This article details the benefits of the injection molding process, the general process and main types of injection molding.

The mold is one of the most important parts of injection molding. A mold is made up of two halves that have a hollow space between them into which a melted material is injected. This hollow space is shaped by both the core and the cavity when the mold is closed. Many people confuse the cavity with the core. In injection molding , the cavity is the female portion of the mold that forms a product’s external shape. The core is the male part that is responsible for forming the pr

Injection molding small series is a type of injection molding primarily used for small runs of products. This differs from typical injection molding, which focuses on mass production at a higher cost. Manufacturers often use injection molding small series for runs of 100,000 or fewer products. Though this may seem like a high number, it’s small in comparison to the millions of products a manufacturer may produce for high-volume parts. The Step-by-Step Workflow for Low Volume

Understanding the injection molding cycle time of a part in production is crucial for several reasons. It allows manufacturers to determine their production rate, which influences the quantity of the parts produced and thus efficiency of the machine. Understanding a part’s cycle time and its stages may also help manufacturers to determine changes they can make that may reduce the time taken to produce a part. This article breaks down the stages of the injection molding cycle