Today, let us follow the Shenzhen injection molding businesses to continue to learn about the injection molding process knowledge of it. Packing stage role is to continue to put pressure Dongguan plastic mold wholesale, compaction melt, increasing the density of plastics (densification) Dongguan plastic molds to compensate for shrinkage behavior of plastics. In the packing process, because the cavity has been filled with plastic, high back pressure. In the process of packing compaction mold, injection molding machine screw is only slowly moving forward in small, plastic flow speed is relatively slow, then known as secured liquidity pressure flow. Since the packing stage, plastic mold wall is cooled and solidified by accelerating the melt viscosity increases too quickly, so the mold cavity of significant opposition. In the late packing and material density continues to increase, gradually molding plastic parts, packing stage to be continued until the gate until cured sealing plastic mold manufacturing, this time packing stage cavity pressure reaches a maximum value. The rapid development of industrial technology, the development trend of Shenzhen injection molding industry is also more rapid, but unfortunately for the uninitiated, is also very familiar to the injection molding industry. Xiao Bian today to each of the partners are not familiar with the injection molding machine is to understand what stuff it. Shenzhen injection molding machine injection plants at home and more to use (injection molding machine) has two basic components: a molten plastic into the mold and the injection device and clamping device. Action clamping apparatus comprising: 1, so that the mold to withstand the injection pressure in the case is closed; 2, the article is taken out of the injection device before the plastic injected into the mold to melt, and then control the pressure and velocity of the melt into the mold. Injection device used today, there are two designs: Screw preplasticator or two-stage device, and reciprocating screw. Screw preplasticator with pre-plasticizing screw (the first stage) and then injected into the molten plastic injection plunger (second stage). Plastic mold, Union City plastic (certified), die 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.