EP1413841A1 - Verfahren zur Trocknung einer Beschichtung eines Metallbands - Google Patents

Verfahren zur Trocknung einer Beschichtung eines Metallbands Download PDF

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Publication number
EP1413841A1
EP1413841A1 EP03292565A EP03292565A EP1413841A1 EP 1413841 A1 EP1413841 A1 EP 1413841A1 EP 03292565 A EP03292565 A EP 03292565A EP 03292565 A EP03292565 A EP 03292565A EP 1413841 A1 EP1413841 A1 EP 1413841A1
Authority
EP
European Patent Office
Prior art keywords
solvents
oven
coating
gas
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03292565A
Other languages
English (en)
French (fr)
Inventor
Ernesto Lopez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Myriad
Original Assignee
Myriad
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Myriad filed Critical Myriad
Publication of EP1413841A1 publication Critical patent/EP1413841A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
    • F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
    • F26B3/343—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects in combination with convection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B05D3/0281—After-treatment with induction heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00—Metallic substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2252/00—Sheets
    • B05D2252/02—Sheets of indefinite length

Definitions

  • the present invention relates to a method of depositing and drying a protective coating on a continuously moving metal strip.
  • This is in particular the application of a coat of paint.
  • This contains organic or aqueous solvents and, after the deposition of the paint layer on the strip, the assembly is heated in order to facilitate the evaporation of the solvents and to allow the paint to cook.
  • the heating of the strip is, in the case of the invention, carried out by electromagnetic induction with the advantage of heating the paint by the substrate (that is to say by the strip), the heat flux propagating towards the outside, which facilitates the evaporation of solvents.
  • the equipment used in the invention is well known, in particular from the documents cited above.
  • a tunnel oven comprising an outer casing and through which the metal strip to be provided with a protective or decorative coating, moves continuously.
  • This oven is heated by magnetic induction.
  • This induction heating ensures, in a known manner, on the one hand the cooking of the coating previously deposited on the strip and on the other hand, the evaporation of the solvents contained in the coating material.
  • a hot gas is injected into the tunnel, at the inlet, at the outlet of the oven and in several places along the latter so as to ensure a homogeneous dilution of the solvents and a uniform temperature throughout the installation.
  • the oven has a system for extracting the atmosphere from the oven loaded with solvents.
  • the extraction of the atmosphere loaded with solvents can be carried out either at a single point or at several points.
  • extraction is carried out, preferably between two inductors.
  • the extracted solvents are used to preheat the gas injected in a known manner into a solvent incinerator.
  • the oven is waterproof with respect to solvents, transparent to the magnetic field and has good thermal insulation and good mechanical strength.
  • the temperature for reheating the gas injected into the oven is chosen to be much higher than the dew point of the solvents to avoid the formation in the solvent extraction ducts, or even of the gas injection, the formation of a clogging deposit as recalled in the preamble.
  • This temperature will be such that the atmosphere in the oven and in the conduits will be at least 175 ° C, and preferably between 180 ° C and 220 ° C. It has been found that at this temperature the phenomenon of depositing an organic solid compound against the internal surface of the oven and of the extraction pipes for gases loaded with solvents is avoided. Of course, this temperature cannot be excessively high because the integrity of the equipment in the oven and in particular of the components of the inductors must be respected.
  • the invention makes it possible to very significantly improve the cleanliness of the oven, which reduces the frequency of maintenance operations linked to cleaning the oven. and keeping the installation's safety equipment, particularly fire safety, in operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Biotechnology (AREA)
  • Molecular Biology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP03292565A 2002-10-25 2003-10-15 Verfahren zur Trocknung einer Beschichtung eines Metallbands Withdrawn EP1413841A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0213366A FR2846261B1 (fr) 2002-10-25 2002-10-25 Procede de sechage d'un revetement de bande metallique
FR0213366 2002-10-25

Publications (1)

Publication Number Publication Date
EP1413841A1 true EP1413841A1 (de) 2004-04-28

Family

ID=32050674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03292565A Withdrawn EP1413841A1 (de) 2002-10-25 2003-10-15 Verfahren zur Trocknung einer Beschichtung eines Metallbands

Country Status (2)

Country Link
EP (1) EP1413841A1 (de)
FR (1) FR2846261B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012163334A1 (de) * 2011-05-27 2012-12-06 Thermprotec Gmbh Verfahren und anordnung zur herstellung eines beschichteten metallbandes

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2833672A (en) * 1955-05-17 1958-05-06 United States Steel Corp Method and apparatus for continuously applying a protective film of lacquer to steelstrip
US4370357A (en) * 1981-03-11 1983-01-25 Cleveland Gear Company Process of continuous metal coating
US4594266A (en) * 1983-07-14 1986-06-10 Cockerill Sambre S.A. Process and an apparatus for baking an organic coating which has been applied to a substrate
US5041312A (en) * 1990-02-13 1991-08-20 Swartz Leroy Apparatus and method for coating a metal strip
US5768799A (en) * 1995-05-23 1998-06-23 Stein Heurtey Process and apparatus for coating metal sheets
US5895599A (en) * 1996-08-02 1999-04-20 Selas S.A. Induction heating device and continuous treatment installation including same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2833672A (en) * 1955-05-17 1958-05-06 United States Steel Corp Method and apparatus for continuously applying a protective film of lacquer to steelstrip
US4370357A (en) * 1981-03-11 1983-01-25 Cleveland Gear Company Process of continuous metal coating
US4594266A (en) * 1983-07-14 1986-06-10 Cockerill Sambre S.A. Process and an apparatus for baking an organic coating which has been applied to a substrate
US5041312A (en) * 1990-02-13 1991-08-20 Swartz Leroy Apparatus and method for coating a metal strip
US5768799A (en) * 1995-05-23 1998-06-23 Stein Heurtey Process and apparatus for coating metal sheets
US5895599A (en) * 1996-08-02 1999-04-20 Selas S.A. Induction heating device and continuous treatment installation including same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012163334A1 (de) * 2011-05-27 2012-12-06 Thermprotec Gmbh Verfahren und anordnung zur herstellung eines beschichteten metallbandes

Also Published As

Publication number Publication date
FR2846261B1 (fr) 2005-01-21
FR2846261A1 (fr) 2004-04-30

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