Method for longitudinally slitting fibrous web using longitudinal splitting machine

A technology of fiber web and slitting machine, which is applied in the direction of winding strip, thin material processing, sending objects, etc.

Active Publication Date: 2011-02-09
METSO PAPER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this approach may result in a small average running speed, which again leads to a loss of throughput

Method used

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  • Method for longitudinally slitting fibrous web using longitudinal splitting machine
  • Method for longitudinally slitting fibrous web using longitudinal splitting machine
  • Method for longitudinally slitting fibrous web using longitudinal splitting machine

Examples

Experimental program
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Effect test

Embodiment Construction

[0022] According to an embodiment of the present invention, in figure 1 A side view of the cutting section 10 of the longitudinal web slitting machine 1 and the subsequently arranged unwinding device 20 for the machine roll 15 is schematically shown in FIG. Part of the web unwinder that functionally belongs to the longitudinal slitter is not shown for the sake of clarity of the drawing. The unwinding device comprises a frame 25 supported on a base (not shown). A plurality of rails 30 are arranged in parallel and in the same direction on the machine frame 25 , so that the machine reels 15 are supported in the same manner via bearings at both ends of the reel shaft (only one is shown). The unwinding device comprises a first unwinding station 35.1 and a second unwinding station 35.2 at which, in the illustrated embodiment, fixed drives 50.1 and 50.2 are provided. The two drives are provided with motors and connection means (not shown) by means of which the motors can be connec...

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PUM

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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 invention relates to an unwinding of a fibrous web and an unwinding device for a fibrous web. The invention relates in particular to the unwinding performed during longitudinal slitting of a fibrous web. Background technique [0002] As is known from the prior art, the machine roll in a longitudinal slitter needs to be unwound and the wide web is cut into a plurality of narrow partial webs by the cutting section of the longitudinal slitter. The web is wound around a core (for example a sleeve) by means of a winder to form a customer roll. If the customer rolls to be produced from each partial web are produced at the same time, the longitudinal slitter is stopped and these rolls, the so-called roll groups, are removed from the machine. Then continue with the process of winding a new volume group. This step is repeated periodically until the paper on the machine roll is exhausted, then the machine roll is replaced and the process begins again wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65H35/02B65H19/18B65H19/20B65H16/00B65H18/08B65H23/00
CPCB65H2301/41361B65H2301/4148B65H2301/41734B65H19/12B65H19/126B65H19/1815B65H23/1888
Inventor 肯尼思·阿克尔隆德马尔库·耶尔文斯沃
Owner METSO PAPER INC
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