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Dryer for drying a material web

A dryer and web weaving technology, which is applied in the direction of dryers, drying, heating to dry solid materials, etc., can solve the problem of reducing energy demand of drying devices

Inactive Publication Date: 2016-06-08
WINDMOELLER & HOELSCHER GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Furthermore, when operating the dryer, a further problem is to minimize the energy demand of the overall drying unit

Method used

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  • Dryer for drying a material web
  • Dryer for drying a material web
  • Dryer for drying a material web

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] figure 1 A gravure printing machine according to the prior art is shown. The gravure printing machine 101 includes four printing units 102 , 103 , 104 and 105 . Correspondingly provided in the first three printing units is an intermediate dryer 106, in which the web material does not move around the entire printing unit, but in which the web material is passed through the drying process. After the dry section, it is directly guided from top to bottom to the next printing unit. In the last printing unit 105, by contrast, an end dryer 107 is provided in the form of a drying hood in which the material web surrounds the entire printing unit before it is passed on to the winding 105 moves.

[0023] Figure 2 shows a dryer according to the invention, wherein Figure 2a , Figure 2b and Figure 2c The different web guides in the dryer are shown accordingly.

[0024] Figure 2a Firstly the web guidance of the material web 203 is shown, which is equivalent to that accordi...

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PUM

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Abstract

The invention relates to a dryer for drying a material web, in particular a material web (203) printed with inking units of a printing machine (101). In order to create a dryer for drying a material web that is run optimally for the task currently in progress, the dryer according to the invention comprises a drying section, in which the material web (203) is guided by deflection bodies (206), wherein the deflection bodies can be adjusted and / or the deflection bodies can be introduced into the web path and / or the deflection bodies can be removed from the web path in such a manner that the dwell time of the material web (203) in the drying section changes.

Description

technical field [0001] The invention relates to a dryer for drying a material web, in particular a dryer for drying a material web printed with an inking unit of a printing press. Background technique [0002] For all printing techniques, in particular flexographic printing, offset printing or gravure printing, it is necessary to dry the printed material web in a corresponding dryer. [0003] Drying is of particular interest in gravure printing, since the gravure printing pigments have a particularly low viscosity so that they can be transferred from the deep-lying ink pockets to the material web when they are well emptied. This low viscosity is achieved essentially by a high proportion of solvents with low boiling points in the pigment. The solvent must therefore be removed or volatilized by heating in a dryer after leaving the printing zone in order to dry the printed pigments. [0004] Various variants are known for air guidance in dryers, for example approximately in a...

Claims

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Application Information

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IPC IPC(8): B41F23/04F26B13/06B65H20/24B65H23/24F26B13/20B65H23/26F26B3/30F26B13/08F26B13/30
CPCB41F23/0436B41F23/0486B65H2220/09B65H2301/31B65H2801/21F26B13/08F26B13/12F26B13/14
Inventor C·布林克曼V·施罗德F·古恩斯切拉C·埃舍尔
Owner WINDMOELLER & HOELSCHER GMBH
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