The runner used in mold,can be simply divided into cold runner and hot runner.The obvious advantages of hot runner helps easily distinguish from cold runner in the mold injection.Because of amounts disadvantages cold runner has been eliminated day by day in the plastic injection process.

The hot runner through heating  guaranteed  the runner and the plastic maintains molten state. The hot runner system composed by nozzle, manifold, temperature controller box and so on several parts. The nozzle includes two kinds generally: Open style hot runner nozzle and pin valve type hot runner nozzle. Because the hot runner nozzle form directly decided the hot flow channel system selects with mold's manufacture, thus often corresponding divides the hot flow channel system into the open style hot runner sysunner system.
Cold runner system create the wast each time die sinking cane, when injection molding spare part, the multi-die space cold runner system will create the massive raw material waste, this will enable the pattern making profit space suffer injury seriously. The cold runner merit is easy to use,  also can meet certain artistic needs well. The cold runner can reduce injects uses for diaphanous transparent parts and so on acrylic ester perhaps polycarbonate, avoids injecting in certain parts creates the obvious belt-shaped effect. But regarding the cold runner's shortcoming, besides raw material waste, the cold runner's flaw including caused the entire automation process increased the step. The cold runner mold's partial remove, needs the robot or the worker separates these part from runner. According to runner's size, the waste material value possibility amount to hundred and thousand of US dollars, specially regarding polycarbonate and so on expensive material.
 Regarding the more die space's systems, the cold runner is impossibly entirely as desired. In the multi-die space's situation, the runner plastic would surpass the injection molding part total quantity. At this time, the runner cooling time will surpass the injection molding part cooling time, will cause the mold user's cycle time control by the runner cooling time, this kind of processing situation will be very difficult satisfying. But hot runner can solve this problem, it can effectively increase the total quantity of single die space , because the runner in molten state in the entire processing process.tem and the pin valve type hot runner system.
Cold runner system create the wast each time die sinking cane, when injection molding spare part, the multi-die space cold runner system will create the massive raw material waste, this will enable the pattern making profit space suffer injury seriously. The cold runner merit is easy to use,  also can meet certain artistic needs well. The cold runner can reduce injects uses for diaphanous transparent parts and so on acrylic ester perhaps polycarbonate, avoids injecting in certain parts creates the obvious belt-shaped effect. But regarding the cold runner's shortcoming, besides raw material waste, the cold runner's flaw including caused the entire automation process increased the step. The cold runner mold's partial remove, needs the robot or the worker separates these part from runner. According to runner's size, the waste material value possibility amount to hundred and thousand of US dollars, specially regarding polycarbonate and so on expensive material.
 Regarding the more die space's systems, the cold runner is impossibly entirely as desired. In the multi-die space's situation, the runner plastic would surpass the injection molding part total quantity. At this time, the runner cooling time will surpass the injection molding part cooling time, will cause the mold user's cycle time control by the runner cooling time, this kind of processing situation will be very difficult satisfying. But hot runner can solve this problem, it can effectively increase the total quantity of single die space , because the runner in molten state in the entire processing process.

hot runner,cold runner,distinguish,advantages,disadvantages

Elyn

Email:service2@anole-hot-runner.com