Method of drying and/or curing an organic coating on a continuously running metal strip, and device for implementing this method

A metal belt, moving direction technology, applied in the direction of dryers, progressive dryers, devices for coating liquid on the surface, etc., can solve problems such as burning, achieve high drying temperature, and ensure the effect of drying temperature

Inactive Publication Date: 2013-07-24
CLECIM SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even though European patent EP 0 132 248 states that the energy balance of such devices is improved relative to devices operating with induction heating means, however, due to the risk of combustion of solvent vapors in contact with the active elements of the infrared radiation source, The device requires constant purging of the shell with inert gas

Method used

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  • Method of drying and/or curing an organic coating on a continuously running metal strip, and device for implementing this method
  • Method of drying and/or curing an organic coating on a continuously running metal strip, and device for implementing this method

Examples

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Embodiment Construction

[0047] exist figure 1 Drying and / or drying units shown in include:

[0048] - a furnace 1, preferably vertical and forming a tunnel, through which the steel strip 2, which has previously been deposited with an organic coating of the varnish or paint type; and

[0049] - means 3 (for example: deflecting rollers) for moving the strip 2 from the inlet E at the first end of the shell 11 of the furnace 1 to the outlet S at the other end of said shell 11 ,

[0050] Furnace 1 includes a hot inner wall (in figure 1 and 2 Not shown in the shell 11, which is equipped with:

[0051] - a plurality of inductors 4 distributed along the housing 11; and

[0052] • A plurality of infrared emitters 5 with catalytic burners (or sources of catalytic radiation) arranged alternately with the inductors 3 on both sides of the strip 2 .

[0053] Said plant 1 also comprises a recovery chamber 6 for oxidized gases and residual solvents, wherein said oxidized gases and residual solvents are directed...

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Abstract

A method of drying and / or curing an organic coating on a continuously running metal strip, includes heating the strip by electromagnetic induction in a tunnel furnace having an enclosure with hot internal walls and heating the enclosure. The heating of the strip by electromagnetic induction is coupled with heating by infrared radiation and heating by convection with a combustion gas. The heating of the enclosure of the furnace is performed by convection using the same combustion gas used for heating the strip by convection. A device for implementing the method is also provided.

Description

technical field [0001] The present invention generally relates to the drying and / or stoving of organic coatings, such as paint or varnish, on a continuously moving metal belt. Background technique [0002] Organic coatings such as paint or varnish are deposited in liquid form on a continuously moving steel belt. It is therefore necessary to carry out drying and / or drying of these coatings before the strip can be deflected or supported by rollers and of course before being wound up. [0003] In order to accelerate their drying and thus reduce the length of the equipment, it is known to those skilled in the art to use heating means to accelerate the evaporation of the solvent contained in these coatings of organic nature. Thus, after coating, the steel strip passes through a heated shell, where the solvent is continuously evaporated and drawn off in order to limit its concentration in the shell below the explosion threshold. They are then directed to an incineration unit. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B3/28F26B3/34F26B13/10B05D3/02B05D7/14
CPCF26B13/10B05D3/0263B05D7/14B05D3/0272B05D3/0209B05D2252/02F26B3/283F26B3/343B05D3/0281
Inventor P-J·博雷尔
Owner CLECIM SAS
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