An extruder is a machine used to shape materials by forcing them through a specially designed opening, known as a die. This process is commonly used in manufacturing to create products like plastic pipes, sheets, and food items. The material, often in the form of pellets or powder, is heated and melted before being pushed through the die, which gives it a specific shape. Extruders are widely used in various industries, including plastics, food, and rubber. They can produce continuous lengths of material, making them efficient for large-scale production. The versatility of extruders allows for the creation of complex shapes and textures, catering to diverse applications.