Plastic binding machines are devices used to bind documents together using plastic combs or spirals. They are commonly used in offices, schools, and print shops to create professional-looking reports, presentations, and booklets. The process involves punching holes in the pages and then inserting a plastic binding element to hold them securely. These machines come in various sizes and capacities, suitable for different binding needs. Some models are manual, requiring hand operation, while others are electric for faster binding. Popular brands include Fellowes and GBC, which offer a range of features to accommodate various document sizes and thicknesses.