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Injection pressure loss in hot runner


About the injection pressure loss in hot runner, A lot of mould users hold the idea that hot runner mould loss less proessure than cold runner mould. In fact in the practical usage. the the other side is right. Reasons are as flowings.
Many of the mould users think that the cold runner loss less injection pressure since they know that in hot rinner system , the melting plastic are keeping in the condition of hot in the whole injection process. That is true, but the fact is in most of the runner construction case, the melting distance will be wider to ensure the hot runner flowing construciton can be nice designed. So the injection pressure will be large. That is the injection pressure loss in hot runner system. In application of the hot runner. we should care much on the injection pressure. In production the plastic with low flowing feature such as: PC,POM , need apply long flowing distance hot runner , have high weight products... It is better for us to use CAE or mould CAE to made the hot runner analze before we made the solution.

Anole is an experienced hor runne maker , if u have any interested about it , please contact me freely.

Written by : Lenny

Skype: anole-4


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