EP0222060A2 - Dispositif de traitement de matériau par des rayons ultraviolets - Google Patents

Dispositif de traitement de matériau par des rayons ultraviolets Download PDF

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Publication number
EP0222060A2
EP0222060A2 EP86109661A EP86109661A EP0222060A2 EP 0222060 A2 EP0222060 A2 EP 0222060A2 EP 86109661 A EP86109661 A EP 86109661A EP 86109661 A EP86109661 A EP 86109661A EP 0222060 A2 EP0222060 A2 EP 0222060A2
Authority
EP
European Patent Office
Prior art keywords
radiation
layer
shells
parabolic
reflector
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Withdrawn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
EP86109661A
Other languages
German (de)
English (en)
Other versions
EP0222060A3 (fr
Inventor
Reinhard Born
Hans-Georg Dr. Lotz
Heinz Keller
Martin Lehner
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.)
FERD RUEESCH AG
Balzers und Leybold Deutschland Holding AG
Original Assignee
Ferd Rueesch Ag
Leybold AG
Leybold Heraeus 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 Ferd Rueesch Ag, Leybold AG, Leybold Heraeus GmbH filed Critical Ferd Rueesch Ag
Publication of EP0222060A2 publication Critical patent/EP0222060A2/fr
Publication of EP0222060A3 publication Critical patent/EP0222060A3/fr
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0403—Drying webs
    • B41F23/0406—Drying webs by radiation
    • B41F23/0409—Ultraviolet dryers
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
    • E04G3/243—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons following the outside contour of a building
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
    • E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables

Definitions

  • the invention has a device for treating matter by UV rays, preferably for drying surfaces coated with UV rays or UV inks, for example for drying UV printing inks immediately after printing in a rotary printing press and for irradiating gases and liquids to the subject, which consists of a housing in which a UV radiation source and at least one reflector surface are arranged.
  • the known drying devices are unsuitable for drying the so-called UV inks, which are increasingly being used, since they are not drying by evaporation of volatile constituents of the paint, such as water or solvent, but one
  • Polymerization process is under the influence of ultraviolet radiation.
  • light sources are therefore predominantly proposed which emit the highest possible proportion of ultraviolet radiation.
  • Commercial quartz lamps are used for this purpose, around which one or more reflectors are arranged, in order to direct as much of the 360 ° radiation from the quartz lamp onto the printed web of paper, plastic film or metal. Reflectors made of aluminum, anodized aluminum or stainless steel sheet are used.
  • the known UV lamps have the disadvantage, on the one hand, that not only the desired ultraviolet radiation, but also the entire radiation emitted by the radiation source, which extends over a large spectral range (approx. 200 to 1000 nm), onto the irradiated surface of the printed area Web is emitted directly or indirectly via the reflectors. Due to the high wall temperature of 650 to 800 ° C, caused by the high proportion of visible and infrared radiation from 400 nm, this leads to a very strong heating of the printed web and, depending on the type of material, to stretching and moisture-related distortions, softening Plastic film or scorching of the paper, so that measures must be taken to cool the printed web (maximum permissible web temperature 40 ° C).
  • the disadvantage is the very rapid aging of the reflectors.
  • the reflective surfaces corrode extremely quickly due to the influence of radiation, heat and, under the simultaneous influence of vapors and gases rising from the printed web, of condensation water and due to the ozone formed when the quartz lamps are ignited, so that the reflection drops sharply after a relatively short period of operation.
  • Investigations and measurements have shown that as a result of the escape of chlorinated hydrocarbons from the UV inks, which split up under the action of UV rays and heat and release chlorine into the atmosphere, hydrochloric acid, which forms the reflector material, forms together with the condensation water attacks. Vapors from the roller cleaner containing trichlorethylene can also produce similar effects.
  • a device consisting of a UV radiation source and at least one reflector, the at least one reflector surface having one or more coatings for reflecting the UV radiation from the UV radiation source and an underlying coating for absorbing the longer-wave Part of the spectrum of the UV radiation source is provided.
  • the reflector preferably consists of two parabolic or elliptical half-shells, since the necessary coatings are difficult to apply to strongly curved surfaces.
  • the half-shells are preferably arranged so as to be pivotable relative to one another in order to be able to focus the reflected radiation.
  • Aluminum or its alloys, copper, brass or steel has proven to be advantageous as the material for the parabolic half-shells.
  • the reflection layer applied to the absorption layer consists of a multitude of alternating layers of high and low burning material, which together form a so-called interference filter.
  • parabolic or elliptical half-shells preferably consist of an aluminum alloy, which is offered under the trademark "Extrudal 50".
  • the absorption layer preferably consists of several, respectively polished coatings of copper and nickel, which are applied to the previously polished aluminum surface.
  • the polished nickel layer is black chrome-plated.
  • the diffusion barrier layer made of a dielectric with a physical thickness of at least 0.5 ⁇ m is preferably arranged between the absorption layer and the reflection layer.
  • the diffusion layer advantageously consists of Si0 2 , which on the one hand behaves optically advantageous, on the other hand in the fact that no additional coating source is required because of the other coating.
  • the parabolic half-shells are preferably provided with a cooling system for dissipating the absorbed heat.
  • parabolic half-shells consisting of "Extrudal 50" preferably consist of a continuous casting hollow profile, the cavities of which are connected to a cooling system.
  • the UV emitter consisting of two parabolic half-shells and a quartz lamp arranged between them is preferably provided at its lower opening with a cover that is permeable to UV radiation.
  • the cover is preferably made of quartz glass. Furthermore, it is advantageous to arrange an impermeable cover on the lower opening of the UV lamp, which cover can quickly close the opening in order to be able to cover the radiation in the event of a sudden train stop.
  • FIGS. 7 and 8 are diagrams in which the radiation intensity of the UV and IR radiation is compared with one another when the half-shells are pivoted differently.
  • the minimum value of the UV radiation required per m 2 of an area to be dried is based on a specific 3 web width and a web speed of 80 m / min. specified with 9 to 9.5 W.
  • the two lower curves, which show the radiation of known UV lamps, show the required minimum value is already fallen below after 400 operating hours because of the increasing reduction in the UV reflection of the reflectors due to the corrosion that has occurred.
  • the upper curve represents the amount of radiation from a device according to the invention. This is still after 2,500 hours of operation well above the minimum value.
  • the drop in the amount of radiation here is not due to corrosion of the reflectors, but to a decrease in the performance of the quartz lamp.
  • the known UV lamps A and B are compared with the device C according to the invention with regard to their efficiency, the total UV radiation of the device C being set at 100 percent.
  • the UV lamp A only achieves 37% of the radiation from C, the UV lamp B only 71%.
  • the indirect radiation at A is only 10% due to the poor reflection of the reflector, while 27% is due to the direct radiation of the quartz lamp. Due to the poor efficiency, two UV lamps of type A must be used one behind the other in order to achieve the required performance.
  • the output of UV lamp B is better at 71%, with 37.5% being indirect radiation and 33.5% being direct radiation.
  • the UV lamp 3 gives hence on the operating time calculated the worst result, because of the high proportion of indirect radiation and the managerial set forth above stun g sabfall due to corrosion of the reflectors of the drop in the overall performance is particularly high.
  • the power ratio between direct and indirect radiation is almost the same, but does not lead to a significant drop in the power of the indirect radiation, since the reflectors are practically not subject to wear or corrosion.
  • a major advantage of the device according to the invention is that, because of the considerably reduced visible and IR radiation, the radiation source can be arranged closer to the material web, which increases the incidence of UV radiation.
  • FIG. 3 the comparison shown in FIG. 2 is based on the IR radiation, 100% of the IR radiation in the device C according to the invention likewise being assumed.
  • the efficiency of the absorption layer according to the subject of the invention is clear.
  • the proportion of indirect IR radiation at C is only 24%, while the proportion of indirect radiation at A is 68% and a total IR radiation of 122% compared to C.
  • the ratio is even more unfavorable. Compared to C, the total IR radiation is approximately 171%.
  • the indirect IR radiation here is over 100%.
  • the indirect IR reflection is greater than the indirect UV reflection.
  • the diagrams in FIGS. 7 and 8 show the effect of UV and IR radiation with different inclinations of the reflector shells relative to one another (7.5 ° and 20 ° C.). It is known that the curing of UV printing inks is less dependent on the irradiation time than on the penetration of the ink layer with the UV radiation. The comparison shows that by focusing the UV radiation with an inclination of the half-shells by 20 °, the radiation intensity can be increased significantly.
  • the device 1 shown in Figure 4 consists of a housing 2 and a table 4, over which the printed web 5 at a web speed of 80 m / min. is pulled, is pivotally mounted.
  • a quartz lamp 6 is arranged so that it can be replaced easily.
  • the hollow extruded profiles made of aluminum "extrudal 50" are provided with channels 8 for the flow of a coolant such as water or the like.
  • the lower opening of the housing 2 is closed by a quartz glass plate 9.
  • a blind 10 is arranged below the quartz glass plate 9, which can be quickly pulled in front of the quartz glass plate 9 by means not shown when the web is at a standstill and by means of a corresponding control.
  • the surfaces of the parabolic half-shell reflectors 7, 7 'facing the interior of the housing are provided with an absorption layer 11, each made of a polished copper and nickel coating, which is black chrome-plated.
  • the absorption layer 11 must not only ensure good IR absorption, but also provide a good substrate for the quartz layers of the reflection layer 12 to be vapor-deposited.
  • the reflection layer 12 consists of a total of 65 individual layers, of which the odd-numbered layers consist of hafnium dioxide and the even-numbered layers consist of silicon oxide. Each of these layers has a very specific thickness, which can be expressed as a multiple of ⁇ / 4, where ⁇ is the so-called "reference wavelength", which in the present case is 350 nm.
  • the multiples of ⁇ / 4 are only, for example, integers (e.g. 1.00); they are below 1.00 in numerous layers and only above 1.00 in the last (66th) layer, namely 1.36.
  • the resulting reflection curve (FIG. 6) clearly shows that the layer system has a reflection maximum limited by steep flanks in the range between 250 and 400 nm.
  • reflector half-shells made of black-chromed extruded aluminum alloy profiles "Extrudal 50" were placed on substrate holders in a vapor deposition system of the type 1100 Q (manufacturer: Leybold-Heraeus GmbH in Hanau, FRG) and the system was pressed within six minutes evacuated from 10 Pa.
  • the substrates were then cleaned in a known manner by a glow discharge.
  • the system was then evacuated to a pressure of 5 ⁇ 10 -3 Pa within a further 30 minutes and the substrates were heated to 260 ° C., whereupon oxygen was admitted as a scattering gas up to a pressure of 2 ⁇ 10 -2 Pa.
  • hafnium dioxide which was housed in an evaporation crucible, was degassed with an electron beam gun for two minutes until the pressure remained stable. Subsequently, the Hf0 2 was evaporated as the first layer and at the same time as an adhesion promoter with an evaporation rate of 1.3 nm / s.
  • a first Si0 2 layer was evaporated by means of a further electron beam gun with a vapor deposition rate of 1.0 nm / s, while the Hf0 2 was kept at a sufficiently high temperature level by a lower energy supply. After the controlled closing of the diaphragm for the SiO 2 evaporator, this was also kept at an elevated temperature level by means of low energy input and the electron beam gun for the Hf0 2 evaporation was again adjusted to the evaporation power.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Drying Of Solid Materials (AREA)
EP86109661A 1985-07-20 1986-07-15 Dispositif de traitement de matériau par des rayons ultraviolets Withdrawn EP0222060A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853526082 DE3526082A1 (de) 1985-07-20 1985-07-20 Vorrichtung zum trocknen von uv-druckfarben
DE3526082 1985-07-20

Publications (2)

Publication Number Publication Date
EP0222060A2 true EP0222060A2 (fr) 1987-05-20
EP0222060A3 EP0222060A3 (fr) 1988-04-27

Family

ID=6276367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86109661A Withdrawn EP0222060A3 (fr) 1985-07-20 1986-07-15 Dispositif de traitement de matériau par des rayons ultraviolets

Country Status (3)

Country Link
EP (1) EP0222060A3 (fr)
AU (1) AU590592B2 (fr)
DE (1) DE3526082A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3902643A1 (de) * 1989-01-30 1990-12-13 Metz Luft Und Trocknungsanlage Uv-strahler
EP0370352A3 (fr) * 1988-11-17 1991-03-20 Joseph Thomas Burgio, Jr. Appareil de durcissement d'un revêtement sur un substrat mouvant et procédé de fonctionnement de l'appareil
DE9014652U1 (de) * 1990-10-23 1992-02-27 STEAG Micro-Tech GmbH Sternenfels, 75447 Sternenfels Bestrahlungsvorrichtung
DE4301718A1 (de) * 1993-01-22 1994-07-28 Jochen Dipl Ing Hagedorn UV-Bestrahlungseinrichtung
US5502310A (en) * 1993-06-05 1996-03-26 Werner Kammann Maschinenfabrik Gmbh UV-radiating apparatus for irradiating printing ink on items and methods of drying items with printing ink thereon
WO1996030210A1 (fr) * 1995-03-31 1996-10-03 Ferguson International Holdings Plc Amelioration apportees a la stratification de materiaux en feuille
DE19810455A1 (de) * 1998-03-11 1999-09-23 Michael Bisges Kaltlicht-UV-Bestrahlungsvorrichtung

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5003185A (en) * 1988-11-17 1991-03-26 Burgio Joseph T Jr System and method for photochemically curing a coating on a substrate
DE29710251U1 (de) * 1997-06-12 1997-08-14 MAN Roland Druckmaschinen AG, 63075 Offenbach Vorrichtung zum Trocknen bogenförmiger Bedruckstoffe an einer Druckmaschine
GB2336895A (en) * 1998-04-30 1999-11-03 Gew UV dryer with shaped reflector surface
DE102006021716B4 (de) * 2006-05-10 2013-11-21 Koenig & Bauer Aktiengesellschaft UV-Bestrahlungseinrichtung
EP1878987A3 (fr) * 2006-07-14 2010-09-01 manroland AG Dispositif de séchage destiné au traitement d'une surface de matière d'impression dans une machine de traitement
DE102006043789A1 (de) * 2006-09-19 2008-03-27 Koenig & Bauer Aktiengesellschaft UV-Bestrahlungseinrichtung zur UV-Lack- und Druckfarbentrocknung
DE102006048082A1 (de) * 2006-10-10 2008-04-17 Man Roland Druckmaschinen Ag Vorrichtung zum Trocknen an einer Druckmaschine
EP2353863B1 (fr) 2010-02-02 2016-03-30 Komori Corporation Procédé et dispositif d'impression/revêtement

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3644730A (en) * 1967-08-29 1972-02-22 Libbey Owens Ford Glass Co Selective reflectors
GB1397077A (en) * 1971-07-16 1975-06-11 Hanovia Lamps Ltd Ink drying reflector system
US3819929A (en) * 1973-06-08 1974-06-25 Canrad Precision Ind Inc Ultraviolet lamp housing
US4048490A (en) * 1976-06-11 1977-09-13 Union Carbide Corporation Apparatus for delivering relatively cold UV to a substrate
DE2820399A1 (de) * 1978-05-10 1979-11-15 Wallace Knight Ltd Vorrichtung zur behandlung von blattmaterial durch bestrahlen
DE2830870C2 (de) * 1978-07-13 1984-12-06 Screen Printing Supplies Pty. Ltd., Greenacre, Neusüdwales Vorrichtung zum Trocknen von insbesondere durch Siebdurck bedrucktem Material
US4434562A (en) * 1981-09-02 1984-03-06 American Screen Printing Equipment Company Curing apparatus and method
AU2935384A (en) * 1983-06-24 1985-01-03 Screen Printing Supplies Pty. Ltd. Heat curing apparatus
US4563589A (en) * 1984-01-09 1986-01-07 Scheffer Herbert D Ultraviolet curing lamp device
CH660489A5 (de) * 1984-08-31 1987-04-30 Bernhard Glaus Verfahren und vorrichtung zum aushaerten polymerisierbarer beschichtungsmassen auf nicht textilen substraten.
US4646446A (en) * 1985-11-04 1987-03-03 American Screen Printing Equipment Company UV curing apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0370352A3 (fr) * 1988-11-17 1991-03-20 Joseph Thomas Burgio, Jr. Appareil de durcissement d'un revêtement sur un substrat mouvant et procédé de fonctionnement de l'appareil
DE3902643A1 (de) * 1989-01-30 1990-12-13 Metz Luft Und Trocknungsanlage Uv-strahler
DE9014652U1 (de) * 1990-10-23 1992-02-27 STEAG Micro-Tech GmbH Sternenfels, 75447 Sternenfels Bestrahlungsvorrichtung
DE4301718A1 (de) * 1993-01-22 1994-07-28 Jochen Dipl Ing Hagedorn UV-Bestrahlungseinrichtung
US5502310A (en) * 1993-06-05 1996-03-26 Werner Kammann Maschinenfabrik Gmbh UV-radiating apparatus for irradiating printing ink on items and methods of drying items with printing ink thereon
WO1996030210A1 (fr) * 1995-03-31 1996-10-03 Ferguson International Holdings Plc Amelioration apportees a la stratification de materiaux en feuille
DE19810455A1 (de) * 1998-03-11 1999-09-23 Michael Bisges Kaltlicht-UV-Bestrahlungsvorrichtung
DE19810455C2 (de) * 1998-03-11 2000-02-24 Michael Bisges Kaltlicht-UV-Bestrahlungsvorrichtung
US6621087B1 (en) 1998-03-11 2003-09-16 Arccure Technologies Gmbh Cold light UV irradiation device

Also Published As

Publication number Publication date
AU590592B2 (en) 1989-11-09
AU6019586A (en) 1987-01-22
DE3526082C2 (fr) 1988-09-22
DE3526082A1 (de) 1987-01-29
EP0222060A3 (fr) 1988-04-27

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