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Device for directly or indirectly applying a liquid to pasty application medium and method for operating said type of device

A direct, medium technology, applied in the field of material width, can solve problems such as disturbing the environment of air-conditioned rooms, and achieve the effect of reducing overhead

Inactive Publication Date: 2013-08-21
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The input of heat and / or humidity increases as the weight per unit area of ​​the individual material webs increases and leads to a disturbance of the environment created in the interior of the air-conditioning room.

Method used

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  • Device for directly or indirectly applying a liquid to pasty application medium and method for operating said type of device
  • Device for directly or indirectly applying a liquid to pasty application medium and method for operating said type of device
  • Device for directly or indirectly applying a liquid to pasty application medium and method for operating said type of device

Examples

Experimental program
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Effect test

Embodiment Construction

[0043] figure 1 The basic structure of a device 1 designed according to the invention for applying a liquid to pasty coating medium onto a material web in the form of a moving fibrous web F is shown schematically. In order to illustrate the individual directions, a coordinate system is set up on the device by way of example. The X direction describes the longitudinal direction of the device, which coincides with the direction of travel of the material web F through the device 1 . The Y direction describes the width direction, ie the direction transverse to the direction of travel of the fibrous web F. The Z direction represents a height direction.

[0044] The device 1 is represented here as a separate, ie independent device. The plant can either be directly downstream of the plant for producing the fibrous web F as an in-line plant, wherein the fibrous web F is then led directly out of the machine for producing the fibrous web into the plant 1 . If the plant 1 is designed...

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Abstract

The invention relates to a device (1 ) for directly or indirectly applying a liquid to pasty application medium in the form of at least one free falling curtain (3) to a moveable material web, in particular fibrous web (F), said device (1) having at least one application unit (2) arranged in a housing (7) and means (15) which are arranged upstream of the application unit (2) when seen in the direction of flow of the material web and which are used to reduce an air boundary layer which can form on a surface (4) of the material web. The invention is characterised in that the means (15) for reducing an air boundary layer which can form on a surface (4) of the material web, are mounted directly upstream of, when seen in the direction of flow, the inlet (11) of said material web in the housing (7) and comprises at least one device (16, 16.1, 16.2, 16.11 -16.1 n) associated with a surface (4) of the material web for applying a fluid jet directed to a surface (4) of the material web.

Description

technical field [0001] The invention relates to a device for the direct or indirect application of a liquid to pasty coating medium in the form of at least one free-falling curtain to a moving material web, in particular a fibrous web, having at least An applicator arranged in the space enclosed by the housing and means for reducing the air boundary layer formed on the surface of the material web upstream of the applicator in the direction of travel of the material web. [0002] Furthermore, the invention relates to a method for operating such a plant for the direct or indirect application of a liquid to pasty coating medium. Background technique [0003] A material web according to the invention is understood to be a planar formation whose lengthwise and widthwise dimensions are substantially greater than the heightwise dimension, wherein the lengthwise dimension is likewise significantly greater than the widthwise dimension. The material web can be a fibrous web, a plasti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H23/48B05C5/00
CPCD21H23/48B05C5/005
Inventor F.费希尔C.亨宁格笹正志
Owner VOITH PATENT GMBH
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