EP2765000A1 - Durcissement d'un revêtement veiné agencé sur un substrat - Google Patents

Durcissement d'un revêtement veiné agencé sur un substrat Download PDF

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Publication number
EP2765000A1
EP2765000A1 EP13154872.9A EP13154872A EP2765000A1 EP 2765000 A1 EP2765000 A1 EP 2765000A1 EP 13154872 A EP13154872 A EP 13154872A EP 2765000 A1 EP2765000 A1 EP 2765000A1
Authority
EP
European Patent Office
Prior art keywords
substrate
leds
photoinitiator
led array
coating
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Withdrawn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
EP13154872.9A
Other languages
German (de)
English (en)
Inventor
Frederic Zapf
Sebastian Kamps
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.)
FARBWERKE HERKULA S.A.
Original Assignee
Farbwerke Herkula St Vith SA
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 Farbwerke Herkula St Vith SA filed Critical Farbwerke Herkula St Vith SA
Priority to EP13154872.9A priority Critical patent/EP2765000A1/fr
Publication of EP2765000A1 publication Critical patent/EP2765000A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B05D3/06—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 exposure to radiation
    • B05D3/061—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 exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • 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
    • B41F23/044—Drying sheets, e.g. between two printing stations
    • B41F23/045—Drying sheets, e.g. between two printing stations by radiation
    • B41F23/0453—Drying sheets, e.g. between two printing stations by radiation by ultraviolet dryers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
    • 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
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B05D5/061—Special surface effect

Definitions

  • the invention relates to a method for curing a arranged on a substrate Maserdruckbe Anlagenung and / or a UV topcoat, which have at least one photoinitiator, wherein the coated with the Masertikbe Anlagenung and / or the UV topcoat substrate with the radiation of a UV light source, in particular with wavelengths between 300 nm and 420 nm, wherein the UV light source has at least one wavelength in the range of the absorption spectrum of the photoinitiator.
  • maser printing makes it possible, for example, plates, strips or profiles and the like.
  • a surface structure that is modeled, for example, the surface of natural wood or natural stones.
  • the substrates are printed by means of indirect gravure printing (offset method) with a decor which consists of paint or ink and cures upon irradiation with UV light.
  • colorless UV matt or UV gloss lacquers can subsequently be applied as a surface coating.
  • PVC sheets can be produced, which can be used as wall coverings or baseboards.
  • conventional UV lamps have hitherto been used for curing the paint or ink composition. These conventional UV lamps emit radiation with wavelengths between about 320 microns to 420 microns.
  • the paints and / or inks used for the maser printing coating have correspondingly a plurality of photoinitiators, wherein each photoinitiator absorbs light of a specific wavelength or of a specific wavelength spectrum.
  • each photoinitiator absorbs light of a specific wavelength or of a specific wavelength spectrum.
  • the wavelength spectrum of a conventional UV lamp are covered, so that it is ensured that regardless of the UV lamps used by the user, a complete curing of the coating used can be achieved.
  • the aforementioned UV lamps also emit heat radiation, which can heat the coated substrate and thus damage.
  • the number of UV lamps used is limited, which in turn reduces the speed of production.
  • the UV lamps used in the prior art are mostly doped or undoped high-pressure mercury lamps, which require a certain lead time and also a certain follow-up time, which also increases the time required for production. In addition, they have a relatively short life and a loss of performance in the course of the same.
  • the document describes US 2005/0062830 a device having LED arrays formed widthwise in accordance with the width of heat-sensitive recording paper.
  • the individual LEDs within the array are arranged and aligned so that the light emitted by them is distributed evenly in the width direction of the recording paper and thus unevenness is avoided.
  • the size of the LED array is exactly matched to the width of the recording paper.
  • a reflector used in conjunction with the LEDs also provides directional irradiation of the recording paper.
  • the pamphlets EP 2 390 102 and WO 2007/096824 also relate to arrangements of UV LEDs which are used to cure photoinitiator-coated coatings. These arrangements specifically focus the light of the UV LEDs with the aid of reflectors and lenses onto a specific location of the coated substrate.
  • the invention provides that an array of UV LEDs is used to irradiate the maser pressure coating as a UV light source.
  • UV LEDs to cure the maser print coating has the advantage that they emit monochromatic radiation, so that the emission of heat radiation is prevented.
  • any number of UV LEDs can be used without thereby increasing the heat radiation. Damage to the substrate is reliably prevented.
  • LEDs also have the advantage that they do not require any lead times and / or follow-up times, so that a total of faster curing of the coating is possible.
  • LEDs have about ten times longer life than conventional gas powered UV lamps, so maintenance can be minimized. A loss of power during the life of the UV LEDs also does not occur. Also, the failure of only single LEDs within the LED array does not affect the homogeneous and complete cure of the coating.
  • UV LEDs have a lower power consumption with the same power.
  • UV LEDs contain no toxic mercury and there is no toxic ozone gas, since the wavelength of the UV LEDs is always greater than 280 nm.
  • semiconductor LEDs in the monochromatic wavelength range of 365 nm, 375 nm, 385 nm, 395 nm and 405 nm on the market. However, wavelengths in the range from 280 nm to 360 nm will also be available in the future.
  • the photoinitiator of the maser pressure coating can be adapted to the type of LED used.
  • the composition of the Maserdruckbe Anlagenung can be simplified, so that a cost reduction is achieved in that are not provided for all wavelengths of light corresponding photoinitiators.
  • applied to the substrate maser pressure coating may have a plurality of photoinitiators, so that substantially for each emitted wavelength, a photoinitiator is provided with a corresponding absorption maximum. It is recommended, for example, to combine UV LEDs with wavelengths of 365 nm, 395 nm and 405 nm.
  • the UV LEDs or UV LED packs projecting beyond the substrate in the edge region of the UV LED array are switched off.
  • the width of the LED array can be specifically adapted to the width of the substrate coated with the maser printing coating.
  • a UV LED array of predetermined width can be provided, which has a multiplicity of UV LEDs arranged in series one after the other and next to one another.
  • a corresponding number of LED columns are activated. Unnecessary LED columns remain switched off.
  • the LEDs actually required for a curing process can be activated or deactivated depending on the respective substrate. This results not least in a lower energy consumption.
  • the outlet openings of the UV LEDs are aligned substantially perpendicular to the surface of the substrate, so that the emitted radiation impinges on direct beam paths to the substrate. According to this arrangement, it becomes possible to directly and homogeneously irradiate the crayon printing coat with UV light, so that the coating applied to the substrate can be uniformly cured. Since the invention thus also requires no reflectors and / or lenses for aligning and focusing the radiation, the individual UV LEDs can be brought closer to the maser pressure coating to be irradiated.
  • the UV LEDs are arranged at a distance of a few millimeters to the surface of the substrate. As a result, the required installation space can be reduced overall, so that even a multiplicity of UV LEDs or even UV LED arrays can be arranged next to one another to save space.
  • the invention also expressly specifically protects the use of a UV LED array for curing a maser printing coating arranged on a substrate, the maser printing coating having at least one photoinitiator, and wherein the UV LED array comprises a plurality of UV LEDs or UV LED packages whose emitted radiation has at least one wavelength in the range of the absorption spectrum of the photoinitiator.
  • the substrate 3 is coated with the maser printing coating 4, which may comprise a paint or an ink.
  • This coating 4 has one or more photoinitiators at the same time, which can be activated with light radiation of one (or even more) specific wavelengths in order to harden the coating 4.
  • the substrate 3 is irradiated with the radiation of a UV LED array 1.
  • the UV LED array 1 in this case has grid-like arranged UV LEDs 2, which are aligned in columns and rows. Depending on the width of the coated substrate 3, UV LEDs 2 projecting beyond the substrate 3 are switched off in the edge region of the UV LED array 1, so that only those UV LEDs 2 are switched on which are located directly over the surface of the substrate 3 ,
  • the substrate 3 or the maser pressure coating 4 arranged thereon is then irradiated with the UV radiation emitted by the UV LEDs 2.
  • the UV LEDs 2 emit radiation of one (or more) wavelengths.
  • the photoinitiator corresponding to the respective radiation wavelength absorbs the respective radiation fraction and thereby initiates the curing of the coating 4.
  • the substrate 3 may advantageously also be pulled continuously over or under the UV LED array 1, as on an assembly line. The cured product is then ready for use.
  • the invention thus provides a particularly space-saving and cost-effective solution for hardening a maser pressure coating 4 applied to a substrate 3.
  • the coated substrate 3 is irradiated directly, ie without the detour via reflectors or lenses, with the radiation of the UV LEDs 2. This eliminates existing problems in the prior art due to contamination of the reflectors, misalignment of the reflectors or an increased structural dimension of the entire device.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Electromagnetism (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP13154872.9A 2013-02-12 2013-02-12 Durcissement d'un revêtement veiné agencé sur un substrat Withdrawn EP2765000A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13154872.9A EP2765000A1 (fr) 2013-02-12 2013-02-12 Durcissement d'un revêtement veiné agencé sur un substrat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13154872.9A EP2765000A1 (fr) 2013-02-12 2013-02-12 Durcissement d'un revêtement veiné agencé sur un substrat

Publications (1)

Publication Number Publication Date
EP2765000A1 true EP2765000A1 (fr) 2014-08-13

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Family Applications (1)

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EP13154872.9A Withdrawn EP2765000A1 (fr) 2013-02-12 2013-02-12 Durcissement d'un revêtement veiné agencé sur un substrat

Country Status (1)

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EP (1) EP2765000A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104842641A (zh) * 2015-05-14 2015-08-19 山东新华医疗器械股份有限公司 Uv印刷全自动制袋灌封机
CN105413991A (zh) * 2015-12-08 2016-03-23 淮南纪兴源机电设备有限公司 一种往复式uv固化机
CN106183391A (zh) * 2016-08-31 2016-12-07 黑金刚（福建）自动化科技股份公司 一种节能的鞋面印刷装置
US10180248B2 (en) 2015-09-02 2019-01-15 ProPhotonix Limited LED lamp with sensing capabilities

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050062830A1 (en) 2003-09-22 2005-03-24 Fuji Photo Film Co., Ltd. Light irradiating unit and optical fixing unit
US20050154075A1 (en) * 2003-01-09 2005-07-14 Con-Trol-Cure, Inc. UV Printing And Curing of CDs, DVDs, Golf Balls And Other Products
US20060290760A1 (en) * 2005-06-28 2006-12-28 Xerox Corporation. Addressable irradiation of images
WO2007096824A2 (fr) 2006-02-24 2007-08-30 Yongqian Liu Lumière del de durcissement comportant des lentilles de fresnel
DE102008033248A1 (de) * 2008-07-15 2010-01-28 Düspohl Maschinenbau Gmbh Verfahren zum Lackieren eines Substrats mit einem strahlungshärtenden Lack
US20100209621A1 (en) * 2008-04-30 2010-08-19 Adastra Technologies, Inc. Machine and method for rapid application and curing of thin ultraviolet light curable coatings
US20100276059A1 (en) * 2009-04-30 2010-11-04 Dong Tian UVV curable coating compositions and method for coating flooring and other substrates with same
EP2390102A2 (fr) 2010-05-28 2011-11-30 Baldwin UV Limited Ensemble de durcissement à UV-DEL

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050154075A1 (en) * 2003-01-09 2005-07-14 Con-Trol-Cure, Inc. UV Printing And Curing of CDs, DVDs, Golf Balls And Other Products
US20050062830A1 (en) 2003-09-22 2005-03-24 Fuji Photo Film Co., Ltd. Light irradiating unit and optical fixing unit
US20060290760A1 (en) * 2005-06-28 2006-12-28 Xerox Corporation. Addressable irradiation of images
WO2007096824A2 (fr) 2006-02-24 2007-08-30 Yongqian Liu Lumière del de durcissement comportant des lentilles de fresnel
US20100209621A1 (en) * 2008-04-30 2010-08-19 Adastra Technologies, Inc. Machine and method for rapid application and curing of thin ultraviolet light curable coatings
DE102008033248A1 (de) * 2008-07-15 2010-01-28 Düspohl Maschinenbau Gmbh Verfahren zum Lackieren eines Substrats mit einem strahlungshärtenden Lack
US20100276059A1 (en) * 2009-04-30 2010-11-04 Dong Tian UVV curable coating compositions and method for coating flooring and other substrates with same
EP2390102A2 (fr) 2010-05-28 2011-11-30 Baldwin UV Limited Ensemble de durcissement à UV-DEL

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104842641A (zh) * 2015-05-14 2015-08-19 山东新华医疗器械股份有限公司 Uv印刷全自动制袋灌封机
US10180248B2 (en) 2015-09-02 2019-01-15 ProPhotonix Limited LED lamp with sensing capabilities
CN105413991A (zh) * 2015-12-08 2016-03-23 淮南纪兴源机电设备有限公司 一种往复式uv固化机
CN106183391A (zh) * 2016-08-31 2016-12-07 黑金刚（福建）自动化科技股份公司 一种节能的鞋面印刷装置
CN106183391B (zh) * 2016-08-31 2018-08-14 黑金刚（福建）自动化科技股份公司 一种节能的鞋面印刷装置

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