Packing stage holding pressure effect is sustained pressure, compaction melt plastics increased density (densification), in order to compensate for shrinkage behavior of plastics. Export packing process in a transparent plastic suppliers, since the cavity has been filled plastic, high back pressure. In the packing compaction process, injection molding machine screw is only slowly moving forward in small transparent plastic, the plastic flow speed is relatively slow, then the flow of said pressure flow encumbered. Since the packing stage, plastic mold wall is cooled and solidified by accelerating the melt viscosity increases quickly, so the mold cavity of the opposition. Shenzhen transparent plastic processors, material density continues to increase in the late packing and plastic parts are gradually forming, packing stage continued until the gate curing seal, at which point the packing phase of the mold cavity pressure reaches the maximum value. Here, the injection time of the injection time is the time required for the cavity filled with plastic melt, excluding mold opening, closing and other auxiliary time. Despite the injection time is very short, the molding cycle of very small transparent plastic factory in Bao'an, but adjust the injection time of the gate, runner and cavity pressure control has a significant role. Injection reasonable time to help melt the ideal filling, and for improving the surface quality of the products and reduce the size of tolerance has very important significance. Injection time is much less than the cooling time, about 1/10 to 1/15 of the cooling time, this rule can be as a predictor of all plastic parts molding time basis. In making mold flow analysis, only the case where the melt is entirely driven by the rotation of the screw cavity filled, the results of the injection time to set equal conditions injection time. If the screw holding pressure switching occurs before the cavity is filled, then the results of the analysis will be more than a set of process conditions. Fukunaga transparent plastic factory, transparent plastic, integration into a plastic mold factory from Shenzhen harmony Technology Limited. Shenzhen harmony Technology Limited (www.rhctech.net) strong, credible, in Shenzhen of plastic products industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement will lead the integration of innovative ideas into a plastic mold manufacturers and you hand in hand into the brilliant, for a better future!