Hot Runner System is a method devised to product continuously without sprue and runner by heating sprue and runner which serve as a route of melted resin in order fill cavity in plastic injection mold and by maintaining it as melted state.
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Advantage of Hot Runner System1.Because Product must be Produced using 100% of new resin without any loss at all the time, defect or trouble due to foreing material can be Prevented.2.Filling Up cavity is needed only, because resin is always being melted up to gate, thus the time of injection, measurement cooling and frame opening/closing is shortened as well as the time to take out sprue and runner.3.Improvement of product quality Because the injection pressure of injection molder is directly transferred to cavity, the problem of product shrinkage, weld, and deformation due to internal stress can be solved.4.Increase of mechanical effciency Efficiency of molder is enhanced because injection quantity, pressure, mold opening distance may be decreased as much as the amount of sprue and runner.5.Extension of mold life The pressure exerted on the mold is decreased due to deecrease of inje
