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  • Is the leakage on the outside of the plastic injection mold or internally. Possible causes for external leaks are worn probe seals or improper cleaning when being maintenance. Internal leakage may be caused by shooting through when manifold in not fully up to temp or wear on the crush rings reducing the preload on the system. There are several Hot Runner systems on the market and many causes for l...

  • Hot runner system is an assembly of heated components used in plastic injection molds that inject molten plastic into the cavities of the mold. (The cavities are the part of the mold shaped like the parts to be produced.)By contrast, a cold runner is simply a channel formed between the two halves of the mold, for the purpose of carrying plastic from the injection molding machine nozzle to the ...