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Coating apparatus and method for coating media on both sides of a moving fibrous web

A fiber material and equipment technology, which is applied in the direction of fiber material treatment, device for coating liquid on the surface, coating, etc.

Active Publication Date: 2016-11-23
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 ("bath mode") without time-consuming modifications and changes to the web running guide

Method used

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  • Coating apparatus and method for coating media on both sides of a moving fibrous web
  • Coating apparatus and method for coating media on both sides of a moving fibrous web
  • Coating apparatus and method for coating media on both sides of a moving fibrous web

Examples

Experimental program
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Embodiment Construction

[0033] figure 1 A cross-section of an application 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]Furthermore, the coating device 1 has a conveying device 7 for feeding the liquid or pasty medium 2 into the roll introduction region 6 , wherein, during operation of the coating device ...

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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 coating device for applying a liquid or pasty medium to both sides of a moving fibrous web, in particular a paper web, a banknote web, a cardboard web or a packaging web, the coating The device has a first coating roll and a second coating roll, which extend at least over the width of the moving fiber web and form a nip with a roll lead-in region, the moving fibers The web can be guided through the nip, and the coating device has a conveying device for feeding a liquid or pasty medium into the roll introduction region of the two coating rollers, wherein during operation of the coating device In the roll lead-in regions of the two application rollers, a liquid trough is formed through which the moving fibrous web runs, and the fill level of said liquid trough can be adjusted by means of said roll lead-in regions. [0002] Furthermore, the invention relates to a method for applying a liquid or pasty medium to both sides of a mov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05C1/04B05C1/16B05C3/10B05C3/12D21H23/42
CPCB05C9/04B05C1/0813B05C1/0834B05C1/0865B05C1/0869B05C1/0873B05C3/125B05C11/045D21H23/42
Inventor H.奥斯特A.希尔兹U.舒马赫
Owner VOITH PATENT GMBH
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