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Curtain applicator

A technology of curtain coating and coating agent, which is applied in coating, devices for coating liquid on the surface, textiles and papermaking, etc., which can solve the problem of damage to plastic rollers or rubber rollers, high cleaning costs, high fiber material webs, etc. Eliminates issues such as tear risk, resulting in lower cost, reduced cleaning time, and improved coating runnability and quality

Active Publication Date: 2013-05-01
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The negative consequence is that serious pigment build-ups occur on successive rollers inside machines for producing and / or applying webs of fibrous material, thus requiring excessive cleaning costs
In addition, there is a high risk of tearing of the fibrous material web and additionally there is also a risk of damage to, for example, plastic or rubber rollers in calenders
Bonding of the web layers of fibrous material on the rolls can also occur and lead to excessively high reject volumes

Method used

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Examples

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Embodiment Construction

[0024] exist figure 1 A curtain coater 1 as part of a fibrous material web making machine or a coating machine is shown in the example of . The curtain coater 1 is used for coating a running paper web, cardboard web or other fibrous material web 2 with a liquid to paste coating agent 3 in order to beautify or improve its printing properties.

[0025] The curtain coater 1 comprises a machine-wide coating head 4 arranged above and at a distance from the fibrous material web 2 , which has a built-in coating agent likewise extending in width direction from the left end side 5 to the right end side 6 Cavity 7. An opening or nozzle inlet 8 for coating agent 3 leads into chamber 7 . In this example, the opening 8 is arranged on the left end side 5 shown in the figure, which is located on the drive side TS of the machine. The coating head 4 discharges the coating agent 3 onto the fibrous material web 2 in the form of a freely falling curtain 9 . On the one hand, the opening 8 is c...

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PUM

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Abstract

The invention relates to a curtain applicator (1, 1a, 1b) for coating a moving paper, cardboard or other fibrous material web (2) with at least one liquid to paste-like application medium (3, 3a, 3b to 3n), comprising a machine-wide application head (4, 4a, 4b), which is arranged above the fibrous material web (2) and at a distance therefrom and has at least one application medium chamber (7, 7a, 7b), into each of which at least one opening (8, 8' to 8''', 8b to 8n) for the respective supplied application medium (3, 3a, 3b to 3n) opens, wherein the application head (4, 4a, 4b) delivers the at least one application medium (3, 3a, 3b to 3n) in the form of a free-falling curtain (9, 9a, 9b) onto the fibrous material web (2), and wherein the application head (4, 4a, 4b) or the opening (8, 8' to 8''', 8b to 8n) is connected to at least one application medium supply line (10), into which various means (11) for collecting or buffer-storing, ventilating, filtering, temperature-controlling, quantity-regulating and the like are incorporated. According to the invention, at least one filter (13, 13', 13'', 13''') is provided for the application medium (3, 3a, 3b to 3n), said filter being directly connected to the opening (8, 8', 8'', 8''', 8b to 8n).

Description

technical field [0001] The invention relates to a curtain coater for coating a running paper web, cardboard web or other web of fibrous material with at least one liquid to pasty coating agent, comprising A machine-wide coating head with at least one coating agent chamber arranged above and at a distance from the fibrous material web, into which at least one opening for the associated coating agent leads in each case, wherein the coating The coating head discharges at least one coating agent onto the web of fibrous material in the form of a free-falling curtain, and wherein the coating head or opening is connected to at least one coating agent delivery line for accumulation or buffering, draining Different equipment such as gas, filtration, temperature adjustment, volume adjustment, etc. are connected to the coating agent delivery pipeline. Background technique [0002] The dosing device is indeed omitted in the curtain applicator since there is no overdose. That is to say...

Claims

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Application Information

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IPC IPC(8): D21H23/48B05C5/00
CPCD21H23/48B05C5/008B05C5/005B05B15/008B05B15/40
Inventor 斯特凡·赖希
Owner VOITH PATENT GMBH
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