According to experts, Shenzhen injection molding of said packing stage, because the pressure is very high, showing part of the compressible plastic properties. In the high pressure zone, the more dense plastic, high density; in the lower pressure region, the plastic more loose, low density, resulting in the occurrence of density distribution changes with position and time. Plastic packing process, the flow rate is very low, the flow is no longer play a leading role; pressure as the main factors affecting the packing process. Plastic packing process in the mold cavity has been filled, then gradually solidified melt pressure as the transfer medium. Mold cavity pressure is transmitted to the mold walls by means of a plastic surface, there is a tendency distraction mold, and therefore requires appropriate clamping force clamping. Clamping force up under normal circumstances would be slightly softened the mold, the mold has a helpful exhaust; but if the rise clamping force is too large, easily lead moldings flash, flash, even softened mold. So Shenzhen injection molding business again remind everyone in the choice of injection molding machines, injection molding machines should be selected with a clamping force large enough to prevent mold up phenomenon and can effectively packing. By heating the plastic injection molding machine plastics melt, and then injected into the mold cavity mold, after cooling down the plastic mold manufacturing, solidified melt ejection Dongguan plastic mold, injection molding machine that is used for injection molding products usually this kind of plastic products for plastic products, injection molding plant in Shenzhen to introduce you to the advantages of Fuyang Xin injection molding: 1, the cost advantage: rotational molding process requires only enough to support the material strength of the rack, and the rack itself dies weight, in order to prevent leakage of the closed mold material force; and materials throughout the molding process, in addition to the role of natural gravity of Dongguan plastic mold wholesale, almost without any external force, which is fully equipped with a convenient machine mold manufacturing, period short, low-cost advantage (to learn more about the injection process, click on the "common types of injection molding"). Dongguan plastic mold factory _ Union City plastic (certified) _ mold provided by Dongguan Fenggang Union City plastic mold factory. Dongguan Fenggang Union City plastic mold factory (www.1688.com/company/dglcmj.html?fromSite=company_site) is Dongguan, a leader in metal molds, over the years, the company is implementing the scientific management, innovation and development, honesty and trustworthiness policy, and satisfy customer needs. In Union City plastic leadership with the staff warmly welcome all inquiries negotiations to create the plastic Union City a better future.