hot runner system
hot runner system
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key of hot runner technology


A successful hot runner mold application project needs many links to safeguard. And most important two technical factors: plastic temperature control and plastic flow control.
1. plastic temperature control
 It is great importance of plastic temperature control in hot runner mould applicaion.The product quality question originate directly from hot runner system temperature inaccurate control in many production processes. such as hot needle type injection product bad quality question, when valve type runner needle closure difficult question, polymorphism cavity die has the components packing time and the quality inconsistent question and so on. If possible should choose multi-regions to control the warm hot runner system separately, increases the use flexibility and strain capacity.
2. plastic flow control
The plastic should flow balance in hot runner system. The runner must simultaneously open to fill various die spaces synchronization. Must balance design running size of family mould which components weight phase difference.Otherwise will present some components sufficient mold guarantee presses insufficiently, some components actually sufficient mold guarantee presses excessively,edge oversized bad quality and so on questions. The hot runner size design must be reasonable. The size too small the sufficient mold pressing power lose oversized. The size too large,hot runner volume oversized. plastic resident time excessively long in hot runner system,material performance will damage causes the components formation cannot satisfy the operation requirements.
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