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Plastic injection molding1/8/2024 ![]() ![]() Structural foam molding is extensively applicable in the automotive industry to make car parts. This pushes the plastic further, increasing its strength and durability while reducing its weight. This molding technology combines an inert gas (usually nitrogen) with the molten plastic inside the mold. Structural foam molding is an inexpensive technology used in low-volume plastic molding. The following are some of the injection molding technologies and how to go about them. This final step involves twisting or cutting any physical defects and applying various surface finish options to make the part glossier as needed. At this stage, close the mold and repeat the process to make other identical parts if need be. Ejection StageĪfter sufficient cooling, open the mold and remove the plastic part using the mold’s built-in ejector pins. Because plastics are generally poor conductors of heat, this cooling phase may be time-consuming. Once in the mold, the plastic resin sets and cools. Here, inject the molten plastic into a mold under high pressure and at a uniform speed. This is the most important step any mistake may affect the final part’s quality. This goes to the barrel, where the rotating screw liquefies the plastic using heat and friction.Then, place the pellets into the machine’s hopper. ![]() ![]() The first step is to melt the plastic pellets.Below is a stepwise explanation of how it works. For simplicity, plastic injection molding is in stages. The injection molding setup consists of the molding machine, the mold, and the plastic material. ![]()
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