Hot Runner
A Hot Runner System is used to maintain a molten flow of plastic from the molding machine nozzle to the gate of a plastic injection mold.In general the system is composed of three main parts; the sprue bush, the manifold block, and
one or more hot nozzles. The system can also include valve gates which are a method of physically shutting the gate off, allowing larger gates to be used while controlling the gate vestage.
Hot Runner System
When designing an injection mold the size and location of the gate is one of the most important considerations for correct molding of the part.
- Reduces cycle times.
- Reduces injection pressure.
- Improves part consistency and quality.
Hot runner technology, introduced to the plastics industry over 50 years ago, revolutionized injection molding processing capabilities by improving molded part quality, enhancing operational efficiencies, reducing scrap and saving money.
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A hot runner system is a molten plastic conveying unit used within an injection mold. In other words, a hot runner system consists of heated components (generally via electricity) used inside the plastic injection molds, which brings the molten plastic from the barrel of an injection molding machine into the cavities of the mold.
