HotRunner
Hot runner systems, often referred to as hot runners, are used in injection molding to keep the plastic in the runners and gates molten as it flows to the cavities. By eliminating solidified runners, they reduce material waste and allow more precise control of melt temperature and flow. They are widely used in high-volume production of plastic parts with complex geometries.
A hot runner comprises heated channels within a stainless steel manifold, nozzle heaters, and a temperature
Advantages include reduced scrap, shorter cycle times, improved color and material consistency, and the ability to
In practice, hot runners are common in automotive, consumer electronics, packaging, and medical device manufacturing, especially