Curtain application unit

An applicator, curtain-type technology, applied in the field of curtain applicators, can solve problems such as bumping into curtain holders, curtain holders or equipment damage

Inactive Publication Date: 2012-01-11
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, for example, cleaning or maintenance devices can hit the curtain holder and thereby damage the curtain holder or the device itself

Method used

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  • Curtain application unit
  • Curtain application unit
  • Curtain application unit

Examples

Experimental program
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Effect test

Embodiment Construction

[0043] figure 1 Curtain coating for applying a coating to a running paper, cardboard or other fibrous material web 2 from the front (ie when viewed in the machine longitudinal direction MD) with a fluid to pasty coating medium is shown in Applicator 1. The curtain applicator 1 comprises, in addition to some units not shown here (such as air boundary layer dampers, start-stop collection devices or sumps, measuring devices, supply lines, etc.) A curtain applicator head 3 , shown only schematically, is arranged above and at a distance therebetween. This curtain coating head 3 extends in the cross-machine direction QD, ie in the width direction of the fibrous web 2 . The application head 3 is here formed as a sliding layer nozzle 1.1. This sliding layer nozzle 1.1 is preferably used for multi-layer coating, but can also be designed for single-layer coating. In the example shown are two outlet slits 4 which are closed on each side with a nozzle edge limiter 5 . A curtain holde...

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PUM

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Abstract

running paper, board or other fibrous web (2) in a coating machine, having a curtain application head (3) arranged above the fibrous web (2) and corresponding at least to the width of the fibrous web (2) for dispensing at least one fluid to a paste-like application medium (M1, M2) in the form of a single or multi-layered curtain (7) that falls substantially as a result of gravity onto the fibrous web (2), wherein a curtain holder (6) is provided on at least one side edge of the curtain (7) to guide the curtain (7) through the path of fall thereof - that is, between a tear-off edge (8) of the application head (3) and the surface of the fibrous web (2) moving underneath the application head (3) in a longitudinal direction (MD), additionally having an application medium collection channel and an air boundary layer distance arrangement. According to the invention, the curtain holder (6) is movably arranged on a component of the coating machine or the curtain application unit (1.1, 1.2, 1.3) so that the curtain holder (6) is held in the operating position (I) thereof during operation of the application unit (1.1, 1.2, 1.3) but still allows it to leave the operating position (I) thereof.

Description

technical field [0001] The invention relates to a curtain coater for applying a coating on a running paper, cardboard or other web of fibrous material, said curtain coater having a device arranged above the web of fibrous material and corresponding at least Curtain coating head over the width of a fibrous material web to output at least one fluid to a pasty coating medium in the form of one or more curtains which fall substantially due to gravity onto the fibrous material web on, wherein, in order to guide the curtain over its descending path, that is to say between the separating edge (Abrisskante) of the application head and the surface of the web of fibrous material moving in the longitudinal direction below the application head, the curtain A curtain holder is provided on at least one side edge of the curtain applicator. In addition, the curtain applicator has a coating medium collection tank and an air boundary layer removal device. Background technique [0002] Such a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C5/00
CPCB05C5/008B05C5/005
Inventor B-U.斯特尔纳M.尤伯谢尔
Owner VOITH PATENT GMBH
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