Ruiskupuristamalla

Ruiskupuristamalla, often translated as injection molding in English, is a manufacturing process used to produce a large number of plastic parts. It involves melting plastic pellets and then injecting them under high pressure into a mold cavity. Once the plastic cools and solidifies, the mold opens and the finished part is ejected. This method is widely used for creating complex shapes with high precision and efficiency, making it suitable for mass production of items ranging from automotive components and consumer electronics to toys and medical devices.

The process begins with the preparation of the plastic material, which is typically in pellet form. These pellets are fed into a heated barrel where they melt. A screw mechanism within the barrel rotates, pushing the molten plastic towards the mold. The mold itself consists of two halves that are precisely machined to form the desired shape of the product. Once the mold is closed and sealed, the molten plastic is injected into the cavity under significant pressure. The pressure ensures that the plastic fills all intricate details of the mold.

After injection, the plastic is allowed to cool and harden within the mold. The cooling time is a critical factor, influencing the cycle time and the properties of the final product. Once sufficiently cooled, the mold opens, and a mechanism typically ejects the finished part. The cycle then repeats, allowing for rapid and continuous production of identical parts. The efficiency and versatility of ruiskupuristamalla make it a cornerstone of modern plastic manufacturing.