Hardcover Back Rounding Machineis an equipment which makes the middle part of the finished case into round shape. It is widely used in hardcover books and notebooks with rounding spine. It is worked under air cylinder. Adjust the cylinder stroke, pressure and time to meet the demands of different hardcover cases.This machine adopts pneumatic principle. The round back mold has heating function and there are a variety of molds for different thickness of spine. It is advanced in design and quick for users to exchange different molds. With the height, pressure, time and temperatureadjustablecharacteristics, users can adjust the machine to make the best result for different kinds of cases.