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Why manufacturers offer free cosmetic aluminium tube mockup
Hot runner nozzle and hot runner gate
by：Lisson
2020-11-20
1.
Hot runner nozzle: besides extrusion machine nozzle, hot runner mold in hot runner system that is the end of the nozzle.
These hot runner manifold nozzle connection to the cavity entrance gate.
Nozzle should have sufficient mechanical strength to withstand higher internal pressure from plastics melt thermal conductivity and good to keep the plastic in the hot state.
Nozzle should also keep insulation with cooling in the die products, in order to prevent too much heat from the nozzle loss.
2. Hot runner gate; Gate has two types: cut-through runner and gate valve type. Straight through gate is one of the most simple gate, but it is hard to control. Straight through gate melt flow during injection is not restricted, but the sprue in the process of forming cooling solidification. If straight through sprue in the process of cooling solidify, melt from the runner system will leak out from the hot runner.
2. Hot runner gate; Gate has two types: cut-through runner and gate valve type. Straight through gate is one of the most simple gate, but it is hard to control. Straight through gate melt flow during injection is not restricted, but the sprue in the process of forming cooling solidification. If straight through sprue in the process of cooling solidify, melt from the runner system will leak out from the hot runner.
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