Patent ID: 8453547

Claim:
A method for trimming at least one side edge of a bound printed product, the method comprising: supplying the printed product to a trimming table; positioning the printed product on the trimming table in a position ready for trimming; advancing a press die toward the table in a pressing direction; contacting the printed product with a surface of the press die; exerting a stretching force onto an upper sheet of the printed product by the surface of the press die, wherein the press die includes support elements and an elastic surface arranged on the support elements, wherein the support elements and elastic surface together include two sections with an opening between the two sections, wherein the support elements project at an acute angle to the pressing direction, with the support elements on opposite sides of the opening projecting away from each other so that the elastic surface of one section is expandable in a direction away from the elastic surface of the other section in order to exert the stretching force onto the upper sheet of the printed product; holding the printed product in place with the press die; and trimming the printed product with a driven trimming knife.