Plastic injection is a manufacturing process used to create plastic parts by injecting molten plastic into a mold. The process begins by heating plastic pellets until they melt, then forcing the liquid plastic into a specially designed mold under high pressure. Once the plastic cools and solidifies, the mold is opened, and the finished part is ejected. This method is widely used in various industries, including automotive, consumer goods, and electronics, due to its efficiency and ability to produce complex shapes. Injection molding allows for high-volume production and consistent quality, making it a popular choice for manufacturers.