Roller for a machine for producing, further processing and/or finishing a fibrous material web

Abstract

The invention relates to a roller (1) for a machine for producing, further processing and / or finishing a fibrous material web such as a paper, paperboard or tissue web, said roller comprising a roller core (2) and a roller cover (3) arranged on the roller core (2) and having at least one layer. According to the invention, at least one device (7) is provided in the roller cover (3) for conducting away electrical charges, said device being conductively connected to a ground connection located outside the roller (1).

Description

technical field [0001] The invention relates to a press according to the preamble of claim 1, especially for use in machines for producing and / or improving fibrous webs such as paper webs, cardboard webs or tissue webs and preferably for smoothing paper webs. Rolls used in light machines. Background technique [0002] Rollers of this type generally have a roll core made of metallic or composite material, which is provided with a roll cover which usually has at least one bonding layer and an active layer which contacts the fibrous web. [0003] Electrostatic charging occurs by friction due to the frictional contact of the fibrous web with its contact partner, eg a roll. This electrostatic charging induces a potential difference between the fibrous web or roll cover and its surroundings, for example with respect to a grounded machine support. This potential difference can lead to electrostatic discharge, which is dangerous for people and machines. [0004] Protection agains...

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of the known roller here is mainly that the entire roller sleeve must be designed to be electrically conductive in terms of structure and / or radial extension, which leads to a very high expenditure of material and costs.

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