Device and method for applying a medium to a moving fibrous web on both sides

A fiber material and equipment technology, which is used in fiber material processing, devices for coating liquid on the surface, coatings, etc., to achieve the effect of less wear and tear

Active Publication Date: 2013-01-30
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this arrangement cannot be operated as a glue press with bath mode ("bat

Method used

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  • Device and method for applying a medium to a moving fibrous web on both sides
  • Device and method for applying a medium to a moving fibrous web on both sides
  • Device and method for applying a medium to a moving fibrous web on both sides

Examples

Experimental program
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Embodiment Construction

[0033] figure 1 A cross-section of a device 1 for applying a liquid or pasty medium 2 to both sides of a moving fibrous web 3 is shown. The fibrous web shown can be, for example, a banknote paper web 3 , wherein the fibrous web is usually glued with PVA as a liquid or pasty medium.

[0034] The deflection roll 4 and the two coating rolls, i.e. the first coating roll 5.1a and the second coating roll 5.2 are positioned relative to the moving fibrous web 3 such that the fibrous web 3 is guided by the two coating rolls 5.1 .5.2 Form the nip N. The two coating rollers 5.1.5.2 thus extend at least over the entire width B (arrow) of the moving fibrous web 3 and the nip N forms a roll introduction region 6 through which the moving fibrous web 3 is guided. Roller lead-in zone 6.

[0035]In addition, the device 1 has a conveying device 7 for feeding the liquid or pasty medium 2 into the roll introduction area 6, wherein, during operation of the device 1, a feed tank 8 through which t...

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PUM

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Abstract

The invention relates to device (1) for applying a liquid or pasty medium (2) to a moving fibrous web (3), in particular a paper, bank note paper, cardboard, or packaging paper web, on both sides, comprising a first application roller (5.1) and a second application roller (5.2), which extend at least over the width of the moving fibrous web (3) and which form a roller gap (N) having a roller inlet area (6), through which roller gap the moving fibrous web (3) can be fed, and comprising a feed device (7) for feeding the liquid or pasty medium (2) into the roller inlet area (6) of the two application rollers (5.1, 5.2), wherein during the operation of the device (1), a liquid sump (8) is formed in the roller inlet area (6) of the two application rollers (5.1, 5.2), through which liquid sump the moving fibrous web runs, and by means of which feed device the level (9) of the liquid sump (8); can be adjusted. The device (1) according to the invention is characterized in that at least one immersion bath device (10) that also accommodates the liquid or pasty medium (2) is arranged upstream from the liquid sump (8) and the roller gap (N) as viewed in the web movement direction (L) of the moving fibrous web (3).

Description

technical field [0001] The invention relates to a device for applying a liquid or pasty medium to both sides of a moving fibrous web, in particular a paper, banknote, cardboard or packaging web, having a first Coating roller and second coating roller, this first coating roller and the second coating roller, this first coating roller and the second coating roller, this first coating roller and the second coating roller extend at least on the width of the moving fibrous web and form the nip with the roll lead-in area, the moving fibrous web can be is guided through the nip, and the device has a conveying device for feeding a liquid or pasty medium into the area of ​​the roll introduction of the two application rollers, wherein during operation of the device, the roller introduction of the two application rollers A liquid trough is formed in the region through which the moving fiber web runs, and the filling level of the liquid trough can be adjusted by means of the roll introduc...

Claims

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Application Information

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IPC IPC(8): B05C1/04B05C1/16B05C3/10B05C3/12D21H23/42
CPCB05C1/0834B05C3/125B05C1/0873B05C9/04B05C1/0869D21H23/42B05C1/0813B05C11/045B05C1/0865
Inventor H.奥斯特A.希尔兹U.舒马赫
Owner VOITH PATENT GMBH
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