A mold maker has his job cut out for him. He has to factor in so many different variables and overlooking even a single one can cause diminished performance at the mildest or high amount of rejections in the product at the worst, which would be a loss for the molder. While he has to consider the resin that will be used, the product size, weight, structure and dimensions, desired final tolerances and structural strength as one part of the design process, he also has to keep in mind the type of machine in which it will be used. As such a mold maker is a totalhot runner solutionsprovider keeping in mind the cost and production volumes to be achieved, done by increasing number of cavities in the mold and their distribution. Then he has to pick suitable nozzles, gates, valves and manifolds, all of which are to be integrated with heating and mold temperature controller, central to the hot runner molding process.
The runner may be insulated type, internally heated or externally heated.
This again influences all connected components in the chain. Internal heating gives improved distribution of heat but is more expensive and requires precise balance and intelligent heat control equipment with sensors at each nozzle and throughout the body to provide correct feedback. External heating provides better temperature control but is expensive and factors in thermal expansion of components in the design process. This may be the route of choice while designing molds and when used with intelligent controllers and high quality elements, provide perfect heating, high quality consistent performance in all cavities and prove durable as well. When you pick a hot runner supplier, ensure he uses the perfect heating solution with integrated intelligent controllers.