Abstract: An apparatus for cutting paper webs includes a paper feeding means (102), a cutting means (108) and a paper delay means (106) which is arranged between the paper feeding means (102) and the cutting means (108) and delays the paper web (112), which is being fed, in such a manner that a position where the cutting means (108) cuts the paper web (112) is determined on the paper web (112). A buffer means (104) is arranged between the paper feeding means (102) and the paper delay means (106) so as to receive an accumulating length of the paper web (112) in the form of a loop during the delay of the paper web (112). A control means (190) controls the paper feeding means (102) and the paper delay means (106) in such a manner that the loop (195) received in the buffer means (104) does not fall short of a minimum height (h).

Abstract: An apparatus comprising two lateral guide devices guiding the paper web at the longitudinal edges of the endless paper web, and a deflection means is provided. With the aid of the deflector the paper web is deflected at least once from its direction of movement to increase the stiffness of the paper web while the paper web is moving between the lateral guide devices. Because of that, the paper web is prevented from ascending the lateral guide devices and a damage to the paper web is avoided when the paper web comes into lateral contact with the lateral guide device.