EP0699530B1 - Verfahren und Vorrichtung zum Trocknen von im Offsetverfahren bedruckten Kunststoff-Folienbahnen - Google Patents
Verfahren und Vorrichtung zum Trocknen von im Offsetverfahren bedruckten Kunststoff-Folienbahnen Download PDFInfo
- Publication number
- EP0699530B1 EP0699530B1 EP95113391A EP95113391A EP0699530B1 EP 0699530 B1 EP0699530 B1 EP 0699530B1 EP 95113391 A EP95113391 A EP 95113391A EP 95113391 A EP95113391 A EP 95113391A EP 0699530 B1 EP0699530 B1 EP 0699530B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flame
- drying
- web
- station
- foil web
- 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.)
- Expired - Lifetime
Links
- 238000001035 drying Methods 0.000 title claims description 43
- 239000011888 foil Substances 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 13
- 238000007645 offset printing Methods 0.000 title description 5
- 229920001169 thermoplastic Polymers 0.000 title 1
- 239000004416 thermosoftening plastic Substances 0.000 title 1
- 238000007639 printing Methods 0.000 claims description 29
- 238000001816 cooling Methods 0.000 claims description 26
- 238000007602 hot air drying Methods 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 238000001459 lithography Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 18
- 239000003973 paint Substances 0.000 description 17
- 239000000976 ink Substances 0.000 description 11
- 239000007788 liquid Substances 0.000 description 6
- 238000010422 painting Methods 0.000 description 5
- 239000002985 plastic film Substances 0.000 description 5
- 229920006255 plastic film Polymers 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000007605 air drying Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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 present invention relates to a method and an apparatus for Drying a plastic film web printed using the offset process, in particular PP (polypropylene), PS (polystyrene) and PE (polyethylene) film.
- the invention relates in particular to a method and an apparatus for drying of plastic films printed in the web offset printing process, their printing ink is still liquid behind the last printing station and can be put down or "Clap" tends.
- DE-AS 1 201 255 already discloses a dryer for thin sheet-like material, for example known paper that can also be used for paper-like substances, for example textiles, knitwear, films, foils. The special with which Printing problems associated with plastic films are in this document not addressed. Furthermore, from DE-Z "The Polygraph" 24/1967, Pages 1646 to 1656 a gas flame dryer known for the Drying of webs printed in web offset printing is used.
- the object of the present invention is therefore to provide a method and a device for drying plastic film webs printed using the offset process, ensure the improved drying of the printed film webs and effectively avoid smearing the ink.
- this object is achieved by a method according to Claim 1.
- the flame drying leads to short-term high heating the film surface and thus for shock evaporation in the paint application contained solvents.
- the higher the temperature of the gas flame the more drying is better and more effective.
- the film web is printed on your Flame-dried surface. This creates the advantage that initially only the actual ink on the film web is flame dried while the plastic film itself itself only indirectly through the High temperature is affected.
- the temperature of the flame drying has where there is an irreversible deformation of the film web.
- the film web is simultaneously with or after in the web feed direction the flame drying cooled.
- Such cooling of the film web is prevented their deformation due to the heat of the gas flame creates the danger a condensation on the film web to be painted later and above all leads to rapid solidification or cooling of the printing inks.
- the cooled film web is subjected to painting.
- the Painting prevents the risk of surface contamination or harmful Effects on the film web.
- the actual printing sections of the Film webs are covered so that they are resistant to abrasion and contamination.
- the painted The film web is subjected to hot air drying and then cooled. The hot air drying leads to a quick drying of the surface sheet, the subsequent cooling both the paint drying and a brings about additional color drying.
- the film web be passed through a printing station is pre-dried by blowing air. This can already be between pre-drying which prepares the subsequent flame drying for individual printing stations of the film web colors can be achieved. After is particularly preferred Blown air drying is provided for each printing station.
- the inventive device for performing the method is the subject of claim 3.
- the flame drying station has one on the printed side of the film web arranged gas nozzle, which is preferably substantially over the entire Width of the film web extends.
- gas nozzle is in the immediate vicinity or behind the flame station arranged. The cooling station cools down the temperature of the Foil sheet and thus to harden the liquid colors when heated.
- the cooling station has a cooling roller on the unprinted side of the Foil sheet is preferably arranged immediately below the gas nozzle.
- a cooling roller on the unprinted side of the Foil sheet is preferably arranged immediately below the gas nozzle.
- Behind the cooling station is a painting station, a hot air drying station and a final cooling station. These stations serve for coating on the print side of the film web and subsequent hot air drying or cooling of the paint application, which is thus scratch-resistant.
- a guide roller to guide the film webs, has the segment wheels, which for contacting unprinted sections the film web, on which there is no paint application. To this Depending on the drying process, a touch of color-bearing can Layers of the web with the guide roller can be avoided.
- a conventional web offset machine is shown, for example pulled a polypropylene (PP) film 2 from a winding roll 4 and is successively passed through printing stations 6, 8, 10, etc., where the film web 2 with different colors, for example cyan, magenta, yellow and Is printed in black.
- a blowing air drying device 26 or 24 arranged a current of air at room temperature against the pressure side of the film web leads to pre-dry the film web.
- Flame drying station consisting of a gas nozzle 12 and an associated one Gas bottle 14 is made.
- the flame drying station is used for flame drying the pressure side of the film web 2 and uses, for example, propane gas, Natural gas or town gas, which is a gas flame with a temperature of approx. 500 ° C delivers.
- the depth or axial length of the gas nozzle opening is maximum about 1 cm.
- the gas nozzle is at such a distance above that Film web arranged that the highest temperature considered optimal Height of the color application of the film web is applied.
- a cooling station having a cooling roller 16 the in contact with the underside of the film web cools it at about 10 ° C. Thereby drying of the still liquid printing inks is achieved.
- Cooling station 16 Behind the cooling station 16 is a painting station 18 in which the entire Film web 2 is coated with a protective lacquer covering the surface to protect against pollution, destruction and scratching.
- the Cooling roller 16 is therefore, in particular, for the downstream coating station 18 important because the paint is not brought through the cooling roller Cooling due to its heat would dry on the paint coat.
- a temperature after the paint drying of 40 ° to 50 ° C is observed, while the temperature after cooling is about 30 ° was up to 35 ° C.
- IR drying devices can be provided to accelerate paint drying. The high temperature flame drying in connection with the feed speed of the film web is so adjust that a permanent deformation of the film web is avoided.
- FIG Figures 2 and 3 Various embodiments of the flame drying station 12 are shown in FIG Figures 2 and 3 shown.
- Fig. 2 is a variation over the entire width of the film web 2nd extending gas nozzle these in three extending over a short width Segments 12 ', 12' ', 12' '' disassembled over a certain length in succession and are staggered across the width, for example diagonally as shown in Fig. 2.
- the individual gas nozzle segments 12 ', 12' 'and 12 '' ' have a width that is dimensioned so that the on the film web 2nd formed color printing area 2 'are appropriately detected and covered. Between the blank areas 2 'existing blank areas do not need one Gas nozzle segment to be detected.
- 3 is an alternative embodiment of the flame drying station shown at the three bar-like gas nozzles 12a, 12a ', which extend over the entire Extend the width of the film web 2, arranged one behind the other at the same distance are. This results in a particularly effective sequential heating of the Color printing areas reached. This is for the special application of over a greater length of color-dryable film webs.
- the drying device according to the invention leads to drying the after Print order liquid colors and especially to dry the liquid Paint applications before the paint cover. There is also the risk of collection reduced by condensed water, which dissolves the water-soluble paint Way would attack.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Description
Claims (5)
- Verfahren zum Trocknen einer im Offsetverfahren bedruckten Kunststoff-Folienbahn, insbesondere PP-, PS- oder PE-Folie (2), die durch mehrere Druckstationen (6, 8, 10) geführt ist, wobei die Folienbahn (2) in Bahnvorschubrichtung hinter einer letzten Druckstation (10) auf ihrer bedruckten Oberfläche flammgetrocknet wird, nach der Flammtrocknung gekühlt wird, danach einer Lackierung unterworfen wird und schließlich einer Heißlufttrocknung und anschließender Abschlußkühlung unterzogen wird, wobei während der Flammtrocknung die Temperatur der Flamme und die Bahn-Vorschubgeschwindigkeit so gewählt sind, daß eine bleibende Verformung der Folienbahn vermieden ist, wobei nur die eigentliche Druckfarbe auf der Folienbahn (2) flammgetrocknet wird, während die Kunststoff-Folienbahn selbst nur mittelbar durch die Hochtemperatur beeinträchtigt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Folienbahn (2) nach dem Durchgang durch eine Druckstation (6; 8; 10) durch Blasluft vorgetrocknet wird.
- Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 oder 2, mit mehreren Druckstationen (6, 8, 10) für die Bedruckung von Kunststoff-Folienbahnen, insbesondere PP-, PS- oder PE-Folien (2), aufweisend eine in Bahnvorschubrichtung hinter der letzten Druckstation (10) angeordnete Flammtrocknungsstation (12, 14), die eine auf der bedruckten Seite der Folienbahn (2) angeordnete Gasdüse (12) aufweist, eine Kühlwalze (16), die sich in unmittelbarer Nähe oder hinter der Flammtrockungsstation (12, 14) befindet, eine hinter der Kühlwalze (16) angeordnete Lackierstation (18), eine dahinter angeordnete Heißlufttrockungsstation (20) und eine abschließende Kühlstation (29), wobei die Temperatur der aus der Gasdüse austretenden Flamme und die Bahn-Vorschubgeschwindigkeit so gewählt sind, daß eine bleibende Verformung der Folienbahn (2) vermieden ist, wobei nur die eigentliche Druckfarbe auf der Folienbahn (2) flammgetrocknet wird, während die Kunststoff-Folienbahn selbst nur mittelbar durch die Hochtemperatur beeinträchtigt ist.
- Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Kühlwalze (16) auf der unbedruckten Seite der Folienbahn unmittelbar unterhalb der Gasdüse (12) angeordnet ist.
- Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß sich die Gasdüse (12) im wesentlichen über die gesamte Breite der Folienbahn (2) erstreckt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4430527 | 1994-08-27 | ||
DE4430527A DE4430527C2 (de) | 1994-08-27 | 1994-08-27 | Verfahren und Vorrichtung zum Trocknen von im Offsetverfahren bedruckten Folienbahnen |
US08/823,448 US5730058A (en) | 1994-08-27 | 1997-03-24 | Method and apparatus for the drying of film lines printed in the offset method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0699530A1 EP0699530A1 (de) | 1996-03-06 |
EP0699530B1 true EP0699530B1 (de) | 1999-11-03 |
Family
ID=25939595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95113391A Expired - Lifetime EP0699530B1 (de) | 1994-08-27 | 1995-08-25 | Verfahren und Vorrichtung zum Trocknen von im Offsetverfahren bedruckten Kunststoff-Folienbahnen |
Country Status (3)
Country | Link |
---|---|
US (1) | US5730058A (de) |
EP (1) | EP0699530B1 (de) |
DE (1) | DE4430527C2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19735984A1 (de) * | 1997-08-19 | 1999-02-25 | Cleanpack Gmbh Innovative Verp | Verfahren und Vorrichtung zum Trocknen von mit metallhaltigen und nicht metallhaltigen Farben bedruckter Kunststoff-Folienbahnen |
AU2003900180A0 (en) * | 2003-01-16 | 2003-01-30 | Silverbrook Research Pty Ltd | Method and apparatus (dam001) |
US8118420B2 (en) | 2007-12-21 | 2012-02-21 | Palo Alto Research Center Incorporated | Contactless ink leveling method and apparatus |
DE102008010200A1 (de) * | 2008-02-20 | 2009-09-03 | Manroland Ag | Druckmaschine |
DK2159056T3 (da) * | 2008-08-27 | 2014-04-14 | Rpc Bebo Print Patent Gmbh | Anordning og fremgangsmåde til trykning og tørring af plastfilm |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1201255B (de) * | 1959-01-27 | 1965-09-16 | Ernest Arthur Timson | Trockner fuer duennes bahnfoermiges Gut, z. B. Papier |
US4766840A (en) * | 1987-01-14 | 1988-08-30 | World Color Press, Inc. | Paper coating machine |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE895458C (de) * | 1935-12-26 | 1953-11-02 | Interchem Corp | Trocknen von Druckfarben |
US2268985A (en) * | 1937-12-29 | 1942-01-06 | Interchem Corp | Method and apparatus for drying printing ink |
US2536609A (en) * | 1945-12-08 | 1951-01-02 | C M Kemp Mfg Company | Ink drying burner |
DE1041000B (de) * | 1955-06-02 | 1958-10-16 | Dr Walter Koecher | Verfahren und Vorrichtung zum Trocknen und Gelieren von Filmbildnermassen |
DE1811836U (de) * | 1957-04-24 | 1960-05-25 | Autogen Endress A G Appbau | Einrichtung zum trocknen der aufgedrucken farbe und zum entladen des papiers in rotationsdruckmaschinen. |
DE1219044B (de) * | 1963-11-11 | 1966-06-16 | Albert Schnellpressen | Vorrichtung zum Trocknen bedruckter Papierbahnen od. dgl. |
FI46281C (fi) * | 1964-05-21 | 1973-02-12 | Skandinaviska Apparatind | Nauhamaisen materiaalin jäähdytysvalssien valmistustapa ja sen mukaan tehty valssi. |
DE1499073B1 (de) * | 1966-09-05 | 1971-12-09 | Vits Maschb Gmbh | Verfahren und Einrichtung zur Stabilisierung der Lage einer Warenbahn bei schwebender Durchfuehrung dieser durch einen mindestens teilweise tragfluegelprofilbegrenzten Behandlungsraum |
US3453742A (en) * | 1967-09-26 | 1969-07-08 | Nat Distillers Chem Corp | Apparatus for drying printing ink on plastic film |
GB1216267A (en) * | 1968-02-09 | 1970-12-16 | Wilkins & Mitchell Ltd | Improvements in or relating to presses |
JPS5615012Y2 (de) * | 1971-08-06 | 1981-04-08 | ||
US3962213A (en) * | 1974-01-23 | 1976-06-08 | Flynn John H | Method of drying coated webs |
FR2344797A1 (fr) * | 1976-03-16 | 1977-10-14 | Flynn John | Procede pour secher des bandes recouvertes d'un enduit, au cours de leur passage |
DE3114406A1 (de) * | 1981-04-09 | 1982-11-04 | Lehmacher, Hans, 5216 Niederkassel | Druckmaschine zum bedrucken einer folienbahn aus kunststoff |
DE3229903A1 (de) * | 1982-08-11 | 1984-02-16 | Mohndruck Graphische Betriebe GmbH, 4830 Gütersloh | Verfahren und vorrichtung zum aufbereiten eines zum trocknen von loesungsmittelhaltigen farben, lacken, klebern oder dergleichen auf papier oder vergleichbaren zelluloseprodukten verwendeten trocknungsmediums |
US5141988A (en) * | 1989-01-10 | 1992-08-25 | Reichhold Chemicals, Inc. | Blister resistant paper coating latex |
US5416984A (en) * | 1993-11-18 | 1995-05-23 | Heidelberg Druckmaschinen Ag | Apparatus and method for deflecting a web |
-
1994
- 1994-08-27 DE DE4430527A patent/DE4430527C2/de not_active Expired - Lifetime
-
1995
- 1995-08-25 EP EP95113391A patent/EP0699530B1/de not_active Expired - Lifetime
-
1997
- 1997-03-24 US US08/823,448 patent/US5730058A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1201255B (de) * | 1959-01-27 | 1965-09-16 | Ernest Arthur Timson | Trockner fuer duennes bahnfoermiges Gut, z. B. Papier |
US4766840A (en) * | 1987-01-14 | 1988-08-30 | World Color Press, Inc. | Paper coating machine |
Also Published As
Publication number | Publication date |
---|---|
US5730058A (en) | 1998-03-24 |
EP0699530A1 (de) | 1996-03-06 |
DE4430527C2 (de) | 1996-07-11 |
DE4430527A1 (de) | 1996-03-28 |
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