Method and structure for fibrous web debatching device

Abstract

The invention relates to a method using a longitudinal cutter for longitudinally splitting a fiber web, wherein, by executing re-rolling of a predetermined length, the web (W) which is cut into part web by the longitudinal cutter is rolled up to a part of web roll with a predetermined diameter. The method involves rolling a machine roll (15) up to a predetermined diameter in a primary rolling station (35.1). The machine roll is shifted to a secondary rolling station (35.2), and a machine roll change is implemented during connection of a fiber web (W) arriving from the new machine roll with a web arriving from an old machine roll that is connected with a splitting connection. The machine roll is shifted from the primary rolling station to the secondary rolling station during the roll change of a longitudinal cutter. An independent claim is also included for an arrangement for slitting a longitudinal cutter of a fiber web.

Description

technical field

[0001] The subject matter of the invention is the unwinding of the fibrous web and the unwinding device for the fibrous web. The subject matter of the invention is in particular the unwinding performed during longitudinal slitting of the fibrous web.

[0002] To this end, the invention relates to a method for longitudinally slitting a fibrous web by means of a longitudinal slitter (1) according to the preamble of claim 1, wherein the longitudinally slit A web slit into partial webs is wound into partial web rolls having a certain diameter. In the first unwinding position ( ) after the unwinding machine roll (Maschinenrolle) is unrolled to a certain diameter, it moves to the second unwinding position, where the machine roll with the remaining web is unrolled and the machine roll is replaced, which is Said to convert the machine roll to be unwound at the second unwinding position (auslaufende) into a new machine roll unwound at the first unwinding position, w...

Images