It is a hole located towards the end of the main channel to trap the cold material produced between the 2 main shots at the tip from the nozzle, thereby preventing the clogging in the runner or the gate. It is directly based on the molding quality and generation efficiency of plastic products.. If the cold material is mixed on the cavity, the internal stress is easily generated inside manufactured product.The gating system looks at the part of the flow path prior to plastic enters the cavity in the nozzle, including the main funnel, the cold material hole, the runner plus the gate. The gating system, also called the runner system, is an arrangement of feed channels that direct the plastic melt in the nozzle of the injector on the cavity, usually consisting of your main flow channel, a runner, a gate, and a cool pocket. The diameter on the main flow path should become enlarged inwards at an opinion of 3° to 5° to help facilitate the stripping of trash can mould joggers.
