using conventional resin canal channel system has the same temperature as compared to the rest of the mold
1 By using injection system with separate temperature control as in the canal system using hot asphalt that the disadvantages channel of cool to be overcome, such as restrictions on the length of the channel, limiting the possibility of shaping the product ...
the entire canal length short as possible to avoid loss of pressure and heat loss in the process of filling .
the section of canal to be large enough to ensure the filling for the entire product without making cycle is too long, consuming materials and large clamping force.
It is small enough to reduce waste, but also must be large enough to rapid mold filling and reduce pressure loss.
Must fill balances for the cavity, the cavity of many vents.
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