Cold, Hot, and Hybrid Runner Systems

One of the critical aspects of tool design is determining which type of gating system best suits the product and production requirements. This article presents the three most common types — cold, hot, and hybrid runner systems. Each represents different compromises in terms of cost, quality, and sustainability, and has a direct impact on return on investment, maintenance and operating costs, and production stability.

Comparison of Moldex3D and Autodesk Moldflow simulation

The current literature suggests that both tools primarily excel at predicting trends, while the final accuracy is significantly influenced by scaling factors and sub-parameters—particularly mesh quality, material data, and process settings. These aspects become increasingly uncertain with the growing use of regranulated materials, especially in the automotive industry. For such materials, comprehensive material data is typically not available, unlike for traditional, well-established, and thoroughly tested compounds.