EP2042002A1 - 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

Info

Publication number
EP2042002A1
EP2042002A1 EP07725319A EP07725319A EP2042002A1 EP 2042002 A1 EP2042002 A1 EP 2042002A1 EP 07725319 A EP07725319 A EP 07725319A EP 07725319 A EP07725319 A EP 07725319A EP 2042002 A1 EP2042002 A1 EP 2042002A1
Authority
EP
European Patent Office
Prior art keywords
composite material
radiation
sheet
irradiation chamber
nir
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.)
Granted
Application number
EP07725319A
Other languages
German (de)
English (en)
Other versions
EP2042002B1 (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
Advanced Photonics Technologies AG
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 Advanced Photonics Technologies AG filed Critical Advanced Photonics Technologies AG
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

Links

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 .mu.m 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 can be found, for example, in the patents DE 198 07 643 C2 and DE 198 57 044 C2 and in the published patent applications DE 100 51 641 A1 and DE 100 51 642 A1 of the applicant.
  • the unpublished German patent application 10 2005 000 837.2 of the applicant finally describes the special lining of a radiation room with tile-like reflector plates with reflective front and radiating back.
  • 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.
  • it is possible to a surprisingly high extent, by multiple reflections also a multiple loading of the workpiece with there not yet become effective to achieve sharing of work 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 composite sheet material, which has its excellent reflection properties even with the usual high thermal load and in plant continuous operation reserves.
  • a composite material is provided which has on a metal sheet support a coating having a reflectance of 97.5% or more for the UV, NIR or IR radiation and then a transparent oxide or glassy corrosion protection layer.
  • 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 reflective properties is silver with a high degree of purity, or else a silver alloy (such as 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 to the carrier is carried out in an expedient manner using 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.
  • suitable "optical sealant” has, in particular an inlet and / or outlet slope or curve, which is occupied or veneered at least in sections with the highly reflective sheet-like composite material.
  • 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 easily opened by unfolding it.
  • 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” is thus the decoupling between high thermal radiation zone and protected against high temperatures environment to be protected largely achieved by the excellent reflection properties of the inside of the irradiation chamber, and on the use voluminous and largely Manually processed thermal insulation materials can be largely dispensed with.
  • This is particularly well achieved when the thermal insulation to the effect of harnessrefflek- lining the irradiation chamber supporting surface 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 a first embodiment of a system according to the invention in a schematic longitudinal section
  • Fig. 2 shows a second embodiment of a system according to the invention in a schematic longitudinal section
  • Fig. 3 is a cross-sectional view of an embodiment of the planar composite material used in the inventive system as a reflector.
  • FIG. 1 schematically shows a drying plant 1 for drying coatings on a rapidly passing metal sheet (coil) 3 by means of near-infrared Radiation emitted by filament halogen lamps 5 operated at high radiator temperature above 2900 K.
  • 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 also serves as a preheating area, while the outlet area 13 can act as a post-tempering 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 flow direction indicated in the figure with arrows. 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 a further embodiment of a processing plant according to the invention a here designated by the numeral 1 'modification of Appendix 1 of FIG. 1, for drying and / or crosslinking of a coating on a metal sheet 3.
  • this Appendix the same or functionally matching parts as the Appendix 1, these are denoted by the same reference numerals as in Fig. 1 and will not be explained again here.
  • a significant constructive difference is that the irradiation chamber T curved in this embodiment to the ceiling wall molded (not separately designated in the figure) end wall areas, their wall in the upper area so as a 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.
  • 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 highly reflecting surface material 15 used for lining the irradiation chambers. This is on a high-quality Al sheet 15a by vacuum deposition of a purest Al layer 15b with a purity of at least 99.99%. and subsequent deposition of a highly transparent SiO 2 layer 15c on the reflection layer 15b and provided on the surface of the support 15a opposite the reflection layer 15b by anodization with a firmly adhering black layer 15d.

Landscapes

  • Laminated Bodies (AREA)

Abstract

L'invention concerne une installation pour le traitement d'une pièce par un rayonnement UV, NIR ou IR. L'installation comprend plusieurs émetteurs qui émettent un rayonnement UV, NIR et/ou IR, au moins une surface de réflexion associée aux émetteurs et une chambre d'irradiation dont la majeure partie de la paroi intérieure est revêtue d'un matériau composite plat hautement réfléchissant qui présente sur un support en tôle métallique un revêtement dont l'indice de réflexion du rayonnement UV, NIR ou IR est de 97,5 % ou davantage, avec par-dessus une couche transparente oxydée ou vitreuse de protection contre la corrosion.
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 true EP2042002A1 (fr) 2009-04-01
EP2042002B1 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008000317A1 *

Also Published As

Publication number Publication date
EP2042002B1 (fr) 2015-09-02
DE102006029252A1 (de) 2007-12-27
WO2008000317A1 (fr) 2008-01-03

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