Extrusion is a manufacturing process used to create objects with a fixed cross-sectional profile. In this process, material, often in the form of plastic or metal, is pushed through a shaped opening called a die. The result is a continuous length of material that can be cut into desired lengths. This technique is commonly used to produce items like pipes, sheets, and various shapes for construction and packaging.
The extrusion process can be applied to various materials, including thermoplastics, aluminum, and rubber. It is valued for its efficiency and ability to produce complex shapes with uniform dimensions. Additionally, extrusion can be combined with other processes, such as injection molding, to enhance product features and performance.