A rotary die-cutter is a machine used in manufacturing to cut materials like paper, cardboard, and plastic into specific shapes. It operates by using a rotating cylinder with sharp edges, known as a die, which presses down on the material as it moves through the machine. This process allows for high-speed production and precise cuts, making it ideal for packaging and printing industries. These machines can handle large volumes and are often used to create items such as boxes, labels, and custom shapes. Rotary die-cutters are efficient and versatile, making them a popular choice for businesses that require consistent and accurate cutting.