+ According to the method of heating the nozzle is divided into 3 main categories:
- ngoai.Voi heated nozzle includes circular grooves plastic and surrounded by a silver. Silver is surrounded by a thermal resistance band pattern or other types of thermal resistance can be surrounded by it. This silver is heated is surrounded by a layer of gas, used to heat its isolation with a cavity. A thermocouple is attached to the nozzle to provide feedback signals to control the temperature of the nozzle
- nozzle heater in. Nozzle heating system from inside the resin flow channel flows through one donut, is formed inside the first hollow steel tubes, 1 thermocouple is placed along with the heating pipes to the feedback signal to the control temperature controlled nozzles. When the molten plastic is injected into the mold, it freezes at the outer wall of the channel while the still molten plastic near. The hardened resin layer sealed help channel does not leak and thermal insulated with mold cold outside
- Nozzle type isolation is a different type of hot channel system includes heating the channel plates and the heat outside led to heated nozzles and the branches, all branches are heated to the channel leading from; therefore, these leaves can not control the temperature independently. Sprinklers are usually connected to the channel by fitting threaded connections to the heat transfer capability is the greatest. plastic boot process will spill out into the groove between the gas nozzle and the thermal conductivity of silver surrounds. This material is retained and acts as insulation.
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