hot runner system
hot runner system
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hot runner correct application method


In the injection molding processing, hot runner played more and more important role in injection, hot runner system application has been widely and widely. Correct application helps to save the plastic material also help to improve the productivity.

In the injection molding processing, hot runner and mold used coordinated, and playing very important role. For example, in the be ultra-thin injection molding production (for example handset battery cover), through uses the hot runner easy to produce high accuracy high grade product; Regarding the bad fluid injection molding material (for example LCP), through uses the hot runner to be able to improve raw material fluidity obviously, guaranteed that the injection molding production carries on smoothly; Regarding some large-scale injection moldings, after like automobile's bumper and shutter, television, the shell, the air conditioner outer covering and so on, through use the hot runner, make the difficult injection molding becomes the relative simplification. In the multi-die space's mold injection molding, lacks the hot runner unable to take shape radically. It can be said that the hot runner is the best technology guarantees the runner balanced. Because the plastic has the shearing force in the hot runner, regardless of the mold has the reasonable geometry balance, takes shape the product weight which comes out to be difficult consistently, specially speaking of the multi-die space's mold, if does not use the hot runner, will take shape the product flank which will come out the inside to be lighter.   

To the plastic processor, when they had certain batch injection molding production, used the hot runner is quite economical. This is because, the hot runner help enterprise eliminated the waste in the injection molding production. In most situations, the waste can not be recycle, sometimes, the waste weight and the product weight is nearly similar, if uses traditional injection way, means wastes raw material nearly the same as product. By this calculation, after using the hot runner, may save 30%~50% raw materials. Moreover, the hot runner is also helpful in reduces mold's attrition, lengthens mold's life. In the ordinary circumstances, the hot runner mold's service life is 2times than drainage opening mold.When installs the hot runner, needs to pay attention to the following several points:
* complete inspection hot runner, including all sizes, resistance, quantity;
* complete inspection mold and hot runner relevant portion size;
* before installs the manifold, must use temperature control examines the hot runner carefully, after to be confirmed, then can be into the operation;
* before the production, must use the multimeter examines hot runner to finally, otherwise does not permit starting;
* must shoot spatially before matched molds, hide another hand board of the mold, then matched molds test mold.
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