EP1555122A1 - Procédé et dispositif pour imprimer du matériau plat - Google Patents

Procédé et dispositif pour imprimer du matériau plat Download PDF

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Publication number
EP1555122A1
EP1555122A1 EP04005737A EP04005737A EP1555122A1 EP 1555122 A1 EP1555122 A1 EP 1555122A1 EP 04005737 A EP04005737 A EP 04005737A EP 04005737 A EP04005737 A EP 04005737A EP 1555122 A1 EP1555122 A1 EP 1555122A1
Authority
EP
European Patent Office
Prior art keywords
cooling
air
flat material
station
cooled
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
EP04005737A
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German (de)
English (en)
Other versions
EP1555122B1 (fr
Inventor
Ronald Streich
Reto Huber
Hansruedi Nef
Asmir Semanic
Heinrich Abbrederis
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.)
Uviterno AG
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Uviterno AG
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Filing date
Publication date
Application filed by Uviterno AG filed Critical Uviterno AG
Publication of EP1555122A1 publication Critical patent/EP1555122A1/fr
Application granted granted Critical
Publication of EP1555122B1 publication Critical patent/EP1555122B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B41F23/0436—Drying webs using a combination of radiation, conduction or convection

Definitions

  • the invention relates to a method according to the preamble of claim 1, and an apparatus for carrying out this method with the generic features of claim 7.
  • the material For printing flat material, such as textiles, paper, but especially labels, the material must be dried after printing. on several occasions this is done with IR, but preferably with UV radiation, namely the latter then, when cured by means of UV radiation, a plastic carrier or binder for the printing ink or to be polymerized. In any case, one is not negligible Share of IR or heat radiation available. The finer the flat material but is, especially if it is made of heat-sensitive plastic or other heat-sensitive Substances is formed, the more important is a cooling of the material to to avoid overheating of the printed sheet.
  • Known cooling systems as known from DE-A-101 50 041, use cooling plates, over which the sheet is guided, wherein the cooling plates by means of a heat exchanger system be cooled.
  • the heat transfer is quite poor. Though it could be improved by placing the sheet under vacuum on the cooling plate, e.g. by vacuum, is pressed, but thus amplified undesirably the Friction, abrasion, the risk of scratching the substrate back and the generation static electricity.
  • Cooling devices are also known by means of rollers in various designs, as EP-A-1 258 352 with a cooled roll, DE-A-101 58 051 or EP-A-1 306 212 with a cooling device over a portion of the guided on the roller Flat material or the US 2003/0121436 with a on the the flat material leading roller provided cooling chamber show.
  • the solution to this problem succeeds by the characterizing features of the claim 1.
  • the sheet during the cooling step is kept accessible from all sides of the cooling air, takes place substantially the heat transfer on both sides of the flat material - and not just on one side, as until now.
  • the flat material is preferably passed through one of promoted the cooling air cooled chamber.
  • the cooling can be done per se in the context of the invention by various means; Printing will generally involve the use of a liquid coolant Although not recommended, but even with a gaseous coolant, this can Suction of the coolant over the sheet done. However, it is preferred if is cooled with blast air.
  • the cooling gas is preferably air for the sake of simplicity (instead of another coolant) his.
  • UV-reactive paints can also be obtained by means of the process according to the invention and other coatings are dried.
  • the cooling air at least in part to a value below 5 ° C, in particular around 0 ° C ⁇ 2 ° C, preferred below 0 ° C, cooled.
  • the cooling can preferably be effected by means of a vortex cooler, with which especially favorable relatively low temperatures, for example within the above can be achieved.
  • Vortex coolers are for example from the WO 02/044631, GB 2,385,115 or US-A-6,401,463, and have many advantages, like avoiding refrigerants, on.
  • the present invention also relates to a device for implementation the inventive method, which has the features of claim 7.
  • a substantially endless or band-shaped flat material 15 runs from a supply roll 16.
  • This strip-shaped sheet is to be treated on one side be, and for this purpose is along its path a treatment facility B provided, which could be designed to be arbitrary, in the present embodiment however, a coating device for applying a plastic layer and / or an adhesive layer is formed. If here of "and / or" the speech is, therefore, because in Fig. 1, although only a single coating roller 11 'shown is, if necessary, but also their several, e.g. each for a different layer, provided could be.
  • Plastics require drying after curing or hardening (curing); in the case of adhesives, UV drying may be provided in a drying station T. his. In the case of heat-sensitive sheet 15, but this can damage to lead.
  • a cooling station C provided with a cooling chamber 3, in which a coolant, preferably in a cooling unit 5 'cooled and supplied by a fan 9 air, the Flat material from all sides surrounds and thus a particularly good heat or cold transition takes place on the flat material 15.
  • the cooling station C may e.g. with freon or another, preferably CFC-free, coolant operated and is therefore on known nature.
  • curable or to be dried adhesive layers many times occur in blister packs, these adhesive layers then usually cured by UV radiation; It is therefore within the scope of the invention certainly also provided, if necessary, before the drying station T a Applizierstation for applying the glued blister (transparent shell, applied to a Carrier, usually of cardboard).
  • the cooling chamber 3 is preferably so relative to the adjacent components (11 ', 14 ', T in Fig. 1; 14, 28, 32, 33 in Fig. 2) and is formed so that in it Flat material 15 is exposed from all sides of the cooling air. This will be a touch avoided with (per se conceivable) guide device and thus also any abrasion or an electrostatic charge.
  • the slots 1, 2 thus preferably touch the Flat material 15 not, but can be used as retraction and Ausfahr Kunststoffblenden. In itself, it would be possible to provide the cooling after the drying station T, but Pre-cooling has proven to be more effective in practice. Again, on the Finish the finished treated or coated and dried sheet 15 on one Take-up reel 25 wound up.
  • FIG. 2 is based on a printing unit, as for example GB-A-2,198,265 has become known, the details of which are removable there and here only be roughly discussed.
  • the reference numerals from this document have been adopted and are also apparent from the accompanying list of reference numerals, to which here express reference should be made.
  • the sheet is in turn wound on the supply roll 16 and is from there by means of the motor 17, for example, a stepping motor, unwound to subsequently to run through a conventional loop 20 to keep the sheet 15 stress-free.
  • this section is referred to as a stocking section V.
  • Supply section V closes a correction section K with the known, in opposite Rotation directions drivable rollers 23, 24th
  • a printing station D (as a treatment station) any training. It should be mentioned again here that in the context of the invention, but also other treatments such as coating (e.g., with an adhesive), or the like. are conceivable.
  • the printed by means of the printing unit D color by means of a UV lamp 34 to dry (drying station T).
  • a heat treatment which is in itself intended only for the applied print layer, damage to cause flat support material that does not have to express visibly, but possibly premature embrittlement, detachment from a substrate or the like., Such as to delay due to thermal expansion or undesirable change the elastic modulus can lead.
  • At least one cooling station C1 and / or C2 provided.
  • the sheet often already during the pressure to temper, and it is also known to use blown air.
  • this cooling process has always been carried out only on one side of the flat material 15, and this is not enough to be very thin and / or very sensitive to heat Material to protect against heat damage.
  • the cooling is now carried out so that the respective cooling zone C1 or C2 is arranged such that the continuous sheet 15 - as possible without further contact in the areas of the cooling chambers 3 - of the adjacent components 14, 28, 32, 33, is held so that a cooling medium, in particular a gaseous Cooling medium, such as air, from both sides of the sheet 15 this can cool.
  • a cooling medium in particular a gaseous Cooling medium, such as air
  • the counting roller 14 of the printing station D could also be used to hold the flat material 15 are used, the example later on one of the loop roll 28 similar role as a holding device runs.
  • the sheet 15 could then, for example are washed by nozzles with cold air on both sides of the sheet 15th bubbles or air or other cooling gas so above the surface of the sheet 15 suction that results in a cooling flow along this surface.
  • cooling takes place in a cooling chamber 3, because then a single supply line 4 or 4 'may be sufficient and, moreover, the losses of cooling capacity can be kept low.
  • This cooling chamber 3 is preferably by means of Isolation material not shown to be isolated.
  • Cooling station C2 it may be sufficient Cooling station C2 to provide after the drying station T.
  • each individual station C1 or C2 to be assigned its own cooling unit. While at the cooling station C1, a vortex tube 5 is indicated as a cooling unit, the air is supplied via a line 6, and the cooling air is discharged into the supply line 4, could the downstream cooling station with a coolant such as Freon or the like. operate, although less preferred. Therefore, if both stations C1 and C2 each one own cooling unit is in any case the use of a vortex cooler with the tube 5 preferred.
  • a single cooling unit 5 is provided, the given and if desired, both cooling stations C1 and C2 supplied.
  • a connecting line 7 each have a switching flap or another valve 8 or 8 'provided.
  • the valve 8 can be designed so that it can be connected only to the connection to the supply line 4 connected cooling chamber releases, or locks against this cooling chamber and only the connecting line for supply via the supply line 4 'releases, or optionally Cooling air to both cooling chambers 3 of the stations C1 and C2 passes.
  • a fan 9 is connected, which receives ambient air and presses into the supply line 4.
  • a slider 10 or another Valve can be provided to the mixing ratio of ambient air from the fan 9 to adjust the air from the vortex tube 5.
  • the slider 10 can do so the slider 10 by a control circuit (not shown) are set so that respectively Air with a certain cooling temperature in the cooling chamber '3 passes.
  • the cooling temperature is generally (and preferably) below 5 ° C, in particular to 0 ° C ⁇ 2 ° C, preferably below 0 ° C, move, but are natural - depending on the requirements - Deviations possible. Nevertheless, it should be stressed that it is the use of a Vortex cooler in a hassle-free way (since operation without any of the problematic Coolant takes place), such low cooling temperatures without large To achieve effort.
  • the mixing of the cooling air can be made in various ways. For example it would be conceivable the outputs of the vortex tube 5 and the fan. 9 in the manner of an injector to unite, which still reduces the efficiency of cooling could increase.
  • Fig. 3 shows a particularly simple construction according to the invention. Again, only one cooling station C T is shown, although in principle several would be possible, as has been explained with reference to the previous embodiments. Parts of the same function have the same reference numerals as in the previous figures, parts of similar function the same reference numerals, but with an addition.
  • FIG. 1 It is apparent, especially in comparison with FIG. 1, that the difference from FIG. 1 essentially consists in that the cooling station C T and its cooling chamber 3 are integrated in the drying station T or assembled therewith. This may seem surprising at first glance, but it becomes immediately understandable considering that it accomplishes two tasks simultaneously: it can be done with a single cooling device C T or a single cooling source 5 '(whatever it is). at the same time the cooling of the heat source (UV lamp 42) take place. Normally, this heat source 42 is associated with its own cooling arrangement, the supply of cooling air optionally taking place from above (with reference to FIG. 3). This cooling arrangement can now be saved in an advantageous manner, because the cooling device C T also provides for the cooling of the heat source 42. This simplifies the design and increases its efficiency.
  • the supply of the cooling medium generally cooling air, optionally also another cooling gas
  • the sheet 15 receives air of lower temperature and becomes more effective cooled before this air (with little heating) of the heat source 42 is supplied.
  • the air preferably flows in the "countercurrent" downwards directed UV radiation.
  • a cover plate for example in the form of a quartz glass plate to protect the tube is provided, even with it no warm, ozone-containing Cooling air is passed to the substrate.
  • cooling air accounts for room air, so that the cooling air is supplied only by the cooling unit 5.
  • another cooling medium could be used, but this is generally less preferred.
  • the cooling chamber 3 can in the context of the invention essentially as a prismatic Be formed hollow body; but it would be quite conceivable, installations for flow guidance, e.g. to swirl the cooling air, provide the sheet with security to wash around from all sides. Moreover, it is probably clear that the top of the hand various embodiments described features in the context of this invention in any way with each other as well as with features of the prior Technology can be combined.
  • the cooling chamber 3 can be formed in various ways his. In itself it would be possible to close its interior in the manner of a freezer and sealed and accordingly for cooling an absorber or compressor unit (heat pump). However, a cooling is preferred with flowing gas, in particular air.
  • the feed was over the Pipe 4 (Fig. 2) and shown by the unit 5 '. But if a flow should take place, then, of course, a discharge of the supplied air must be provided. This can (preferred) via at least one of the air panels 1, 2, in particular at least over the the receiving wind 25 facing air curtain 2, take place, in such a case are unsealed or open form. In this case arises also in connection to the cooling chamber a flowing around the sheet 15 cooling flow, which is preferred.
  • Cooling chamber 3 Another possibility would be, for example at the top (referring to the drawings) of Cooling chamber 3 to provide an exhaust duct. But suppose that also the exhaust air still contains cooling energy, i. a relative (based on the room temperature) low Temperature, then it is also conceivable, the exhaust air in a circuit back to the cooling unit 5 and 5 'supply.
  • the latter option can also be advantageous in particular be when, for example, instead of air, another cooling medium, such as a special gas used becomes.
  • cooling chamber 3 is free of guides or retainers, although the invention is hereof is not limited.
  • air covers 1, 2 as non-contact Designate guides or holding devices with air bearings.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drying Of Solid Materials (AREA)
EP20040005737 2004-01-16 2004-03-11 Procédé et dispositif pour imprimer du matériau plat Expired - Lifetime EP1555122B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH562004 2004-01-16
CH562004 2004-01-16

Publications (2)

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EP1555122A1 true EP1555122A1 (fr) 2005-07-20
EP1555122B1 EP1555122B1 (fr) 2011-04-27

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EP20040005737 Expired - Lifetime EP1555122B1 (fr) 2004-01-16 2004-03-11 Procédé et dispositif pour imprimer du matériau plat

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EP (1) EP1555122B1 (fr)
DE (1) DE502004012438D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105398208A (zh) * 2015-12-17 2016-03-16 东莞市秦智工业设计有限公司 一种不干胶标签的印刷系统

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960081A (en) * 1973-05-11 1976-06-01 Mohndruck Reinhard Mohn Ohg Drying arrangement for drying inks, adhesives and analogous substances on sheet material
DE3241117A1 (de) * 1982-11-06 1984-05-10 Automation für grafische Technik AG, 4005 Meerbusch Verfahren zur abkuehlung einer in einer druckmaschine bedruckten materialbahn sowie vorrichtung zur durchfuehrung dieses verfahrens
US5699625A (en) 1995-10-19 1997-12-23 Oji-Yuka Synthetic Paper Co., Ltd. Apparatus for draining liquid drops from tentering oven
US6185840B1 (en) * 1995-05-04 2001-02-13 Noelle Gmbh Method and apparatus for hardening a layer on a substrate
WO2002044631A1 (fr) 2000-11-29 2002-06-06 Marconi Communications, Inc. Dispositif de chauffage et de refroidissement destine a une enceinte d'equipement et utilisant un tube tourbillon
EP1258352A1 (fr) 2001-05-15 2002-11-20 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif refroidisseur pour une bande de matériau
DE10150041A1 (de) 2001-10-10 2003-04-30 Platsch Gmbh & Co Kg Austrag-Kühleinrichtung für eine Druckmaschine
EP1306212A1 (fr) 2001-10-24 2003-05-02 Koenig & Bauer Aktiengesellschaft Dispositif pour refroidir les produits imprimés avec de l'air refroidi dans des machines pour imprimer des feuilles rotatives
DE10158051A1 (de) 2001-11-27 2003-06-05 Roland Man Druckmasch Verfahren und Vorrichtung zum Abkühlen eines Bedruckstoffes in einer Rotationsdruckmaschine
US20030121436A1 (en) 2001-10-30 2003-07-03 Shields Gerald N. System for cooling ink and other liquids on a printing press
GB2385115A (en) 2001-11-27 2003-08-13 Molinar Ltd A vortex generator

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960081A (en) * 1973-05-11 1976-06-01 Mohndruck Reinhard Mohn Ohg Drying arrangement for drying inks, adhesives and analogous substances on sheet material
DE3241117A1 (de) * 1982-11-06 1984-05-10 Automation für grafische Technik AG, 4005 Meerbusch Verfahren zur abkuehlung einer in einer druckmaschine bedruckten materialbahn sowie vorrichtung zur durchfuehrung dieses verfahrens
US6185840B1 (en) * 1995-05-04 2001-02-13 Noelle Gmbh Method and apparatus for hardening a layer on a substrate
US5699625A (en) 1995-10-19 1997-12-23 Oji-Yuka Synthetic Paper Co., Ltd. Apparatus for draining liquid drops from tentering oven
WO2002044631A1 (fr) 2000-11-29 2002-06-06 Marconi Communications, Inc. Dispositif de chauffage et de refroidissement destine a une enceinte d'equipement et utilisant un tube tourbillon
US6401463B1 (en) 2000-11-29 2002-06-11 Marconi Communications, Inc. Cooling and heating system for an equipment enclosure using a vortex tube
EP1258352A1 (fr) 2001-05-15 2002-11-20 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif refroidisseur pour une bande de matériau
DE10150041A1 (de) 2001-10-10 2003-04-30 Platsch Gmbh & Co Kg Austrag-Kühleinrichtung für eine Druckmaschine
EP1306212A1 (fr) 2001-10-24 2003-05-02 Koenig & Bauer Aktiengesellschaft Dispositif pour refroidir les produits imprimés avec de l'air refroidi dans des machines pour imprimer des feuilles rotatives
US20030121436A1 (en) 2001-10-30 2003-07-03 Shields Gerald N. System for cooling ink and other liquids on a printing press
DE10158051A1 (de) 2001-11-27 2003-06-05 Roland Man Druckmasch Verfahren und Vorrichtung zum Abkühlen eines Bedruckstoffes in einer Rotationsdruckmaschine
GB2385115A (en) 2001-11-27 2003-08-13 Molinar Ltd A vortex generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105398208A (zh) * 2015-12-17 2016-03-16 东莞市秦智工业设计有限公司 一种不干胶标签的印刷系统

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DE502004012438D1 (de) 2011-06-09
EP1555122B1 (fr) 2011-04-27

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