Choice of gate type and location may be one of the most important decisions you make during injection mold design engineering. Perhaps the oldest method of delivering melt from a... moreChoice of gate type and location may be one of the most important decisions you make during injection mold design engineering. Perhaps the oldest method of delivering melt from a machine nozzle to a mold cavity is through a cold runner mould. This can be done directly into part, or it can be divided into flow channels of varying complexity to fill multiple mold cavities with various gate designs.Get more news about Innovative Mold And Design,you can vist our website! Although this method is very simple, processor must manage waste of cold runners that cannot be sold to customers. This material must be ground and then managed as part of material stream that is returned to process, or must be discarded or sold to an intermediary, which typically represents only a fraction of cost of purchase. Recycled material management itself is a topic worth exploring, but it is rarely done. To eliminate this waste, injection molding industry has been using hot runner mold for decades. This approach adds to cost of... less
WHAT IS A HOT RUNNER?
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... moreWHAT IS A HOT RUNNER?
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. The sizing of hot runner melt channels depends on many factors such as the type of resin, the injection speed, fill rate, and the molded part. A temperature controller (standalone controller or controls from the injection molding machine) heats the hot runner system within the injection mold and the resin inside the machine barrel to processing temperature and injects the resin into the mold. The resin travels through the inlet, down into the manifold which then splits to the various nozzles and through injection points (or gates) into the final mold cavity where the final part is formed. Today’s molds can have anywhere from 1 to over 192 nozzles... less