EP2042002B1 - Installation pour le traitement d'une piece par un rayonnement uv, nir ou ir - Google Patents

Installation pour le traitement d'une piece par un rayonnement uv, nir ou ir Download PDF

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Publication number
EP2042002B1
EP2042002B1 EP07725319.3A EP07725319A EP2042002B1 EP 2042002 B1 EP2042002 B1 EP 2042002B1 EP 07725319 A EP07725319 A EP 07725319A EP 2042002 B1 EP2042002 B1 EP 2042002B1
Authority
EP
European Patent Office
Prior art keywords
composite material
radiation
irradiation chamber
nir
planar composite
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.)
Not-in-force
Application number
EP07725319.3A
Other languages
German (de)
English (en)
Other versions
EP2042002A1 (fr
Inventor
Kai K. O. BÄR
Rolf Wirth
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.)
KHS GmbH
Adphos Innovative Technologies GmbH
Original Assignee
KHS Corpoplast GmbH
Adphos Innovative Technologies GmbH
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 KHS Corpoplast GmbH , Adphos Innovative Technologies GmbH filed Critical KHS Corpoplast GmbH
Publication of EP2042002A1 publication Critical patent/EP2042002A1/fr
Application granted granted Critical
Publication of EP2042002B1 publication Critical patent/EP2042002B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0033—Heating devices using lamps
    • H05B3/0038—Heating devices using lamps for industrial applications
    • H05B3/0061—Heating devices using lamps for industrial applications for metal treatment
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0033—Heating devices using lamps
    • H05B3/0038—Heating devices using lamps for industrial applications
    • H05B3/0057—Heating devices using lamps for industrial applications for plastic handling and treatment

Definitions

  • the invention relates to a system for processing a workpiece with UV, NIR or IR radiation according to the preamble of claim 1 and the use of a highly reflective sheet-like composite material in such a system.
  • UV radiation having a significant active content in the near infrared (NIR), in particular in the wavelength range between 0.8 microns and 1.5 microns, applied and so heated.
  • NIR near infrared
  • UV or visible radiation is also absorbed by many materials and causes corresponding thermal effects.
  • UV radiation is used for processing purposes, for example for drying the printing ink on high-speed print image carriers or for curing special paint formulations, in addition to or primarily prior to its thermal action, its crosslinking-initializing effect is of particular importance for certain polymers.
  • the reflectors form walls of an irradiation zone or a radiation space.
  • Corresponding arrangements are, for example, the patents DE 198 07 643 C2 and DE 198 57 044 C2 and the publications DE 100 51 641 A1 and DE 100 51 642 A1 to be taken from the applicant.
  • the present invention is based on this prior art, the task of specifying a further improved system of the generic type, which can be very simple and works with high energy efficiency.
  • the invention includes the essential idea of an improvement of the reflection properties of the workpiece environment driven to the limits of the practically feasible, in order to minimize energy losses which still occur there (and on the whole quite considerable) in known systems.
  • This makes it possible to a surprisingly high degree, by multiple reflections also a multiple application of the workpiece with there not yet become effective shares to reach the working radiation.
  • the invention further includes the idea of lining the inner wall of an irradiation chamber, at least for the most part-preferably as completely as possible-with a highly reflective, laminar composite material which exhibits its excellent reflection properties even under the usual high thermal load and continuous plant operation reserves.
  • a composite material is provided which has a coating with a reflectance of 97.5% or more for the UV, NIR or IR radiation and then a transparent oxide or glassy corrosion protection layer on a metal sheet support.
  • the carrier of the highly reflective sheet-like composite material consists of aluminum or an aluminum alloy.
  • Aluminum sheet is well suited as a substrate for highly reflective coatings and for components with the purpose in question also because of its high thermal conductivity, low cost and easy workability.
  • steel or copper or, for special applications, other metal sheets may also be considered as carriers of the composite material.
  • An advantageous coating material with particularly good reflection properties is silver with a high degree of purity, or else a silver alloy (for example with Gold). Because of the tendency to corrosion, however, an Ag reflection layer places high demands on the quality of the covering corrosion protection layer, so that a coating of the carrier with ultrapure aluminum is to be regarded as a suitable solution, in particular when using Al sheet metal as the carrier.
  • the application of the coating on the support is carried out in an expedient manner with known vacuum coating methods.
  • the back of the sheet metal support for improved heat radiation is darkly colored, especially blackened. This promotes the heat radiation from the composite material or, in conjunction with a fluid flow cooling of the back, and the heat dissipation or convection from there.
  • a structure of the radiation chamber is advantageous in which the composite material of the outer wall of the irradiation chamber with a predetermined distance, in particular mounted on a support structure, is vorgeblendet.
  • the irradiation chamber is optically closed substantially on all sides.
  • the irradiation chamber is optically closed substantially on all sides.
  • the irradiation chamber for processing a continuous workpiece in particular in the form of a sheet or a quasi-endless strip, has an inlet and outlet area adapted to the dimensions of the workpiece with a low tolerance, to which optical sealing means for avoiding associated with radiation leaks.
  • optical sealing means for avoiding associated with radiation leaks.
  • the input and / or outlet slope or curve are assigned adjusting means for adjusting their inclination angle and / or the input and / or outlet more Having sections with different, optionally separately adjustable inclination angle.
  • the irradiation chamber comprises a gas circulation cooling, which comprises the generation and guidance of a cooling gas flow on a surface of the lining sheet-like composite material, in particular its back, and after heating of the gas over a workpiece surface.
  • a gas circulation cooling comprises the generation and guidance of a cooling gas flow on a surface of the lining sheet-like composite material, in particular its back, and after heating of the gas over a workpiece surface.
  • the term "workpiece” is to be understood in its most general sense of a processing object, so also quasi-endless sheets or non-formbone media, such as a particle or liquid flow to include , It should also be noted that in the designation of UV, NIR or IR radiation of the range of visible radiation lying between these areas is by no means excluded, as long as the visible light has a processing function with respect to the workpiece.
  • an embodiment of the system is expedient in which in the irradiation chamber between the radiators and / or the laminar composite material and the workpiece a highly transparent for the UV, NIR and / or IR radiation used protective screen is arranged.
  • the protective screen prevents contamination of the radiator and / or the reflector material. It goes without saying that it is then self-polluted and must be cleaned at certain intervals. This can be facilitated by a chamber construction in which the protective pane can be removed or moved or by unfolding or the like. is easily accessible.
  • a chamber structure is advantageous in which the lining highly reflective composite material can be easily cleaned and / or replaced at least in sections. Concrete design features of such a radiation chamber but are not the subject of the present invention.
  • the protective pane is provided with a coating which reduces the reflection used for UV, NIR and / or IR radiation at least on the surface facing the radiators ,
  • a thermal insulation of the irradiation chamber is at least predominantly effected by the highly reflective sheet-like composite material.
  • This concept which can also be referred to as "light weight thermal insulation”
  • the decoupling between thermally highly loaded irradiation zone and high temperatures to be protected environment largely achieved by the excellent reflection properties of the irradiation chamber inside, and on the use voluminous and largely Manually processed thermal insulation materials can be largely dispensed with.
  • This is achieved particularly well when the thermal insulation to the effect of the high-reflective lining the irradiation chamber flat composite material is supported by a sweeping along the surface of the cooling gas flow. But even without a back-side cooling gas flow, solely by arranging the reflector material at a distance from the irradiation chamber outer wall, the comparatively good thermal insulation properties of air can be used to realize the aforementioned lightweight construction concept.
  • the proposed device has a low thermal mass and therefore is particularly fast in their temperature controllable.
  • the low thermal mass but also requires a fast and high-precision temperature control to compensate for temperature fluctuations of the supplied workpiece or the environment quickly without adverse effects on the quality of the final product can. Therefore, suitably, the radiators are assigned a substantially inertia-free power control for setting a process temperature in the irradiation chamber.
  • Fig. 1 shows schematically a drying plant 1 for drying coatings on a rapidly passing metal sheet (coil) 3 by means of near infrared radiation, which is emitted by at high radiator temperature above 2900 K operated filament halogen lamps 5.
  • the plant 1 comprises an irradiation chamber 7, in which the metal sheet 3 is supported by rotating rollers 9 and which has an inlet region 11 and an outlet region 13, in which no emitters are arranged.
  • the inlet area 11 serves here as a preheating area, while the outlet area 13 can act as a post-annealing zone.
  • the central region of the plant, the actual irradiation chamber 7 has in the illustrated embodiment substantially trapezoidal shape with a continuous metal sheet 3 and the bottom wall 7.1 parallel ceiling wall 7.2 and at an obtuse angle to the bottom wall 7.1 inclined end walls 7.3.
  • the inlet and outlet areas 11, 13 are closely matched in their passage width to the tolerances specified for the fast passage of the sheet 3, wherein the inside width of the inlet area 11 is dimensioned slightly larger than that of the outlet area 13 for a reason to be explained below.
  • the tops of both areas are slightly inclined with respect to the plane of the sheet 3.
  • a highly reflective sheet material 15 This is mounted by a suitable support structure 17 spaced from the wall of the irradiation chamber 7, while it is placed directly on the upper wall portions of the inlet and outlet region 11, 13 at attachment points 19. Also in the spaces between the rollers 9, the reflector material 15 is provided on suitable stands 19.
  • an air inlet 21 is provided in the end wall there, via the fan air in the space between the reflector material 15 and the outer wall of the irradiation chamber 7 in the direction indicated by arrows in the figure flow direction blown.
  • the air After passing through the back of the radiator 5 surrounding and particularly strong heating sections of the reflector construction 15/17 the air, supported by suitable shaping of the reflector units and a (not shown) suction at the outer end of the inlet region 11, on the surface of the metal sheet. 3 and flows counter to its direction to the suction point at the outer end of the inlet region 11. It causes an additional heating of the surface of the sheet and thereby cools even in the inlet region 11 slightly from.
  • Fig. 2 shows as a further embodiment of a processing system according to the invention a here designated by the numeral 1 'modification of the system 1 from Fig. 1 for drying and / or crosslinking of a coating on a metal sheet 3.
  • this plant has the same or functionally matching parts as the plant 1, these are given the same reference numerals as in Fig. 1 and will not be explained again here.
  • a significant constructive difference is that the irradiation chamber 7 'in this embodiment curved on the ceiling wall integrally formed (not separately designated in the figure) end wall areas, their wall in the upper area so as vault 7.2' is executed. This part of the irradiation chamber is covered with surface reflector material 15 lying directly on the wall, which is connected to attachment points 19 with the wall.
  • inlet area 11 'and outlet area 13' is a massive upper or top wall omitted and only free elevated flat reflector material 15 is provided. While this is fixedly mounted in the outlet region 13 ', its inclination is adjustable by suitable adjusting means 23 in the inlet region 11'.
  • a cooling air supply is in this embodiment at the transition between the irradiation chamber 7 'and the outlet region 13' and is here designated by 21 '. As shown by the course of the arrows, the cooling air flows substantially only along the surface of the metal sheet 3 to the inlet region 11 'and is sucked out there; an air cooling of the reflector surfaces 15 is thus not provided here; but it may be separate (not shown) cooling means for the radiator 5 may be present.
  • Fig. 3 shows schematically the cross section of an embodiment of the used for lining the irradiation chambers highly reflective sheet material 15. This is on a high-rolling-quality Al sheet 15a by vacuum deposition of a pure Al layer 15b with a purity of at least 99.99% and subsequent deposition a highly transparent SiO 2 layer 15 c is formed on the reflection layer 15 b and provided on the surface of the support 15 a opposite the reflection layer 15 b by anodization with a firmly adhering black layer 15 d.

Landscapes

  • Laminated Bodies (AREA)

Claims (14)

  1. Installation pour le traitement d'une pièce à usiner par rayonnement UV, NIR ou IR, comprenant une pluralité d'émetteurs (5) émettant un rayonnement UV, NIR et/ou IR et au moins une surface de réflexion associée à l'un des émetteurs,
    comprenant
    une chambre d'irradiation (7) qui est revêtue, dans la majeure partie de la paroi intérieure, d'un matériau composite plat hautement réfléchissant (15) qui présente, sur un support en tôle métallique, en particulier en aluminium ou un alliage d'aluminium, un revêtement d'un indice de réflexion de 97,5 % ou plus pour le rayonnement UV, NIR ou IR et, par-dessus celui-ci, une couche oxyde ou vitreuse transparente de protection contre la corrosion (15c), et caractérisée en ce que la chambre d'irradiation est fermée des tous côtés et présente une zone d'entrée et une zone de sortie adaptées aux dimensions de la pièce à usiner et auxquelles sont associés des éléments d'occlusion optiques destinés à éviter les fuites de rayonnement.
  2. Installation selon la revendication 1,
    caractérisée en ce que
    le revêtement du matériau composite plat hautement réfléchissant est composé essentiellement d'argent ou d'aluminium ultra-pur d'une pureté de 99,99 % ou plus.
  3. Installation selon la revendication 1 ou 2,
    caractérisée en ce que
    les éléments d'occlusion optiques présentent une pente ou courbe d'entrée et/ou de sortie qui est garnie ou parée, au moins par sections, du matériau composite plat hautement réfléchissant (15) et/ou à laquelle sont associés des moyens de réglage pour le réglage de son angle d'inclinaison et/ou qui présente plusieurs sections à angle d'inclinaison différent, réglable séparément à titre facultatif.
  4. Installation selon l'une des revendications précédentes,
    caractérisée en ce que
    le matériau composite (15) de la paroi extérieure de la chambre d'irradiation (7) est placé en amont à une distance prédéterminée, en particulier en étant monté sur une structure portante.
  5. Installation selon l'une des revendications précédentes,
    caractérisée en ce que
    la chambre d'irradiation (7) présente un refroidissement au gaz en circuit fermé qui comprend la production et le guidage d'un flux de gaz de refroidissement sur une surface du matériau composite plat de garnissage, en particulier sur sa face arrière, et après réchauffement du gaz via une surface de pièce à usiner.
  6. Installation selon l'une des revendications précédentes,
    caractérisée en ce que,
    dans la chambre d'irradiation (7), entre les émetteurs (5) et/ou le matériau composite plat (15) et la pièce à usiner, est disposée une vitre de protection hautement transparente pour le rayonnement UV, NIR et/ou IR utilisé, laquelle est pourvue en particulier, au moins sur la surface tournée vers les émetteurs, d'un revêtement antireflet pour le rayonnement UV, NIR et/ou IR utilisé.
  7. Installation selon l'une des revendications précédentes,
    caractérisée en ce que
    une isolation thermique de la chambre d'irradiation (7) est provoquée au moins en majeure partie par le matériau composite plat hautement réfléchissant (15).
  8. Installation selon la revendication 7,
    caractérisée en ce que,
    hormis le garnissage au moyen du matériau composite plat hautement réfléchissant (15) et à titre facultatif un flux de gaz de refroidissement, aucune isolation thermique de la chambre d'irradiation n'est prévue.
  9. Installation selon l'une des revendications précédentes,
    caractérisée en ce que
    une commande de puissance sensiblement à réaction rapide est associée aux émetteurs (5) pour le réglage d'une température de processus dans la chambre d'irradiation (7).
  10. Utilisation d'un matériau composite plat hautement réfléchissant (15) qui présente, sur un support en tôle métallique, un revêtement d'un indice de réflexion de 97 % ou plus pour rayonnement UV, NIR ou IR et, par-dessus celui-ci, une couche oxyde ou vitreuse transparente de protection contre la corrosion (15c), dans une installation selon l'une des revendications 1 à 9 pour le traitement d'une pièce à usiner par rayonnement UV, NIR et/ou IR.
  11. Utilisation selon la revendication 10,
    caractérisée en ce que
    le support en tôle métallique du matériau composite plat (15) est composé d'aluminium ou d'un alliage d'aluminium.
  12. Utilisation selon la revendication 10 ou 11,
    caractérisée en ce que
    le revêtement du matériau composite plat (15) est composé essentiellement d'argent ou d'aluminium ultra-pur d'un indice de pureté de 99,99 % ou plus.
  13. Utilisation selon l'une des revendications 10 à 12,
    caractérisée en ce que
    la face arrière du support en tôle métallique est colorée de manière foncée, en particulier noircie.
  14. Utilisation selon l'une des revendications 10 à 13,
    caractérisée en ce que
    le matériau composite plat (15) d'une paroi extérieure d'une chambre d'irradiation (7) équipée d'émetteurs UV, NIR et/ou IR (5) est placé en amont à une distance prédéterminée.
EP07725319.3A 2006-06-26 2007-05-16 Installation pour le traitement d'une piece par un rayonnement uv, nir ou ir Not-in-force EP2042002B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610029252 DE102006029252A1 (de) 2006-06-26 2006-06-26 Anlage zur Bearbeitung eines Werkstücks mit UV-, NIR- oder IR-Strahlung
PCT/EP2007/004404 WO2008000317A1 (fr) 2006-06-26 2007-05-16 installation pour le traitement d'une pièce par un rayonnement UV, NIR ou IR

Publications (2)

Publication Number Publication Date
EP2042002A1 EP2042002A1 (fr) 2009-04-01
EP2042002B1 true EP2042002B1 (fr) 2015-09-02

Family

ID=38372274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07725319.3A Not-in-force EP2042002B1 (fr) 2006-06-26 2007-05-16 Installation pour le traitement d'une piece par un rayonnement uv, nir ou ir

Country Status (3)

Country Link
EP (1) EP2042002B1 (fr)
DE (1) DE102006029252A1 (fr)
WO (1) WO2008000317A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007058324A1 (de) 2007-12-04 2009-06-10 Advanced Photonics Technologies Ag Hochreflektierendes Auskleidungselement und Bestrahlungsanordnung
US8963109B2 (en) 2010-03-22 2015-02-24 University Of Florida Research Foundation, Inc. Infrared radiation filter systems, methods of use, and methods of disinfection and decontamination
DE202017105318U1 (de) * 2017-09-04 2018-12-06 Krones Ag Behandlungsmaschine für Behälter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58158914A (ja) * 1982-03-16 1983-09-21 Semiconductor Res Found 半導体製造装置
US4789771A (en) * 1985-10-07 1988-12-06 Epsilon Limited Partnership Method and apparatus for substrate heating in an axially symmetric epitaxial deposition apparatus
DE19849462A1 (de) * 1998-10-21 2000-07-06 Dieter Bimberg Infrarot Lampenheizung für Temperaturen >1000 DEG C
US6054687A (en) * 1998-12-31 2000-04-25 General Electric Company Heating apparatus for a welding operation and method therefor
US7115837B2 (en) * 2003-07-28 2006-10-03 Mattson Technology, Inc. Selective reflectivity process chamber with customized wavelength response and method

Also Published As

Publication number Publication date
EP2042002A1 (fr) 2009-04-01
DE102006029252A1 (de) 2007-12-27
WO2008000317A1 (fr) 2008-01-03

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