EP0897797A1 - Procédé et appareil pour le séchage de bandes thermoplastiques imprimées avec encre métallique ou non-métallique - Google Patents

Procédé et appareil pour le séchage de bandes thermoplastiques imprimées avec encre métallique ou non-métallique Download PDF

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Publication number
EP0897797A1
EP0897797A1 EP98115174A EP98115174A EP0897797A1 EP 0897797 A1 EP0897797 A1 EP 0897797A1 EP 98115174 A EP98115174 A EP 98115174A EP 98115174 A EP98115174 A EP 98115174A EP 0897797 A1 EP0897797 A1 EP 0897797A1
Authority
EP
European Patent Office
Prior art keywords
printing
drying
station
film web
printed
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Withdrawn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
EP98115174A
Other languages
German (de)
English (en)
Inventor
Detta Borgardt
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.)
Berry Superfos Bremervoerde Print GmbH
Original Assignee
Cleanpack GmbH Innovative Verpackungen
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 Cleanpack GmbH Innovative Verpackungen filed Critical Cleanpack GmbH Innovative Verpackungen
Priority to DE29824606U priority Critical patent/DE29824606U1/de
Publication of EP0897797A1 publication Critical patent/EP0897797A1/fr
Withdrawn legal-status Critical Current

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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 with metallic (gold) and non-metallic paints printed plastic sheeting, especially PP (polypropylene), PS (Polystyrene) or PE (polyethylene).
  • PP polypropylene
  • PS Polystyrene
  • PE polyethylene
  • DE 44 30 527 C2 already discloses a method and a device for Drying of plastic film webs printed using the offset method, at the one behind a last printing station the foil web on your printed Surface is flame dried.
  • the one on which this document is based Arrangement is suitable for certain printing inks due to the impact flame and downstream processing stations to dry effectively. It has however, it was found that flame drying for drying metallic paints and especially gold colors are not enough.
  • the machine When using the from DE 44 30 527 C2 known flame drying process, the machine must often stopped and the rollers are washed. Also exists when winding up the printed film webs the risk of dropping due to the incomplete Drying.
  • the object of the present invention is therefore to provide a method and a device for drying with metal-containing and non-metal-containing Colors of printed plastic sheeting in such a way that a complete Drying of metal-containing paints, especially gold paints becomes.
  • the printing of the foil web with non-metallic colors is printing the film web with a metal-containing color, in particular gold color in Gravure printing and the subsequent drying of the film web by UV radiation intended.
  • gold is satisfactory with Drying UV radiation so that an already suitably pre-dried gold color in the subsequent printing station for non-metallic ink printing occurs.
  • the foil web is printed with metal-containing inks happens in rotogravure printing.
  • the rotogravure printing has in particular in Combined with UV drying for metal colors.
  • the copper gravure is more expensive than a comparable offset print, but it does High quality printing with gold colors safe.
  • the film web is preferably predried by blowing air after each printing. This allows one between the individual printing stations for the later Flame drying advantageous pre-drying of the film web colors achieved become.
  • a device is provided printed with metallic and non-metallic inks for drying Plastic film webs, having a printing station for metal color printing and multiple printing stations for non-metallic color printing, one in the web feed direction flame drying station arranged behind a last printing station, which is a gas nozzle arranged on the printed side of the film web has, a cooling roller, which is located below the film web, one behind the painting station arranged, a hot air drying station arranged behind and a final cooling station.
  • the invention Device can contain both metal and non-metal Colors can be dried effectively.
  • the sheet of plastic is printed on its Page briefly flamed so that the printing inks are subjected to flame drying be, while the underlying areas of the film web only indirectly come under the influence of heat.
  • the unprinted side of the film web is not exposed to direct heat. This reduces the risk an irreversible deformation of the film web.
  • a cooling station is below the film web or arranged on the unprinted side. The cooling station performs a cooling of the temperature of the film web and thus one Hardening of the liquid colors when heated.
  • the cooling roller is preferably directly on the unprinted side of the film web arranged below the gas nozzle. This is already during flame drying a harmful heating of the film web avoided and a Cooling the film web brought about, which then cooling the favored hot printing surface of the film web. Is behind the cooling station a painting station, a hot air drying station and a final one Cooling station arranged, these stations for coating on the print side the film web and for subsequent hot air drying or cooling serve the paint application, which is thus scratch-resistant.
  • the gas nozzle preferably extends essentially over the entire width the film web. Excellent results have been achieved in practice.
  • a copper gravure printing plant 6 is shown, which is used for printing on a film web 2 made of plastic with metal colors, in particular gold colors is suitable.
  • the pulled off a winding roll 4 plastic film web 2 is by the Gravure printing plant 6 and printed with gold colors, for example.
  • the printed film web 2 with UV radiation in a UV drying unit 26 dried.
  • the film web 2 is then passed through Printing stations 8 and 10 performed where they are of different colors, for example Cyan, magenta, yellow and black is printed.
  • a blow air drying device 24 is arranged, which is a stream of air at room temperature against the pressure side of the film web leads to pre-dry them. Supplementary is provided behind each Pressure stations 6, 8 and 10 to provide such a blown air drying device.
  • the printing stations 8, 10 are offset printing units for printing on the film web with non-metallic colors.
  • Flame drying station consisting of a gas nozzle 12 and one connected to it 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 500 ° C.
  • the gas nozzle 12 extends over the entire width of the Foil web 2, the width of the gas nozzle opening being a maximum of about 1 cm.
  • the gas nozzle is arranged at a distance above the film web, that the highest temperature considered optimal is at the level of the paint application the film web is generated.
  • the flame drying leads to a short-term high heating of the film surface and thus for the shock evaporation of those contained in the paint application Solvent.
  • flame drying on the printed Surface the actual printing ink of the film web is flame dried, while the plastic film itself itself only indirectly the high temperature is affected, causing irreversible deformation is effectively avoided.
  • a cooling station Located below the film web or on the unprinted side of the film web a cooling station that has a cooling roller 16 that is in contact with the bottom of the film web. Behind it are further cooling stations arranged in the form of cooling plates 17 and a cooling tower 17a.
  • the cooling tower 17a has two cooling rolls arranged one above the other. This will make one Drying of the printing inks that are still liquid after the gas flame is achieved.
  • Such cooling of the film web also prevents its deformation as a result the heat of the gas flame creates the risk of condensation descends on the film web to be painted later and leads above all rapid solidification or cooling of the printing inks.
  • Cooling roller 16 is therefore, in particular, for the downstream coating station 18 important because the paint is not cooled by the cooling roller would dry on the paint coat due to its heat.
  • the second cooling station 21 serves to cool the heated ones Film web 2. Finally, the film web 2 treated accordingly wound on a drum 22.
  • the second cooling station 21 does both a lacquer drying as well as an additional color printing drying of the under paint in the paint.
  • a temperature after the paint drying of 40 ° to 50 ° C is observed, while the temperature after cooling is about 30 ° to Was 35 ° C.
  • Additional IR drying devices can be provided to accelerate paint drying.
  • the high temperature flame drying is to be set in connection with the feed speed of the film web that permanent deformation of the film web is avoided.
  • the copper gravure printing plant 6 is used to print the foil web with gold colors. These can be effective in the downstream UV drying unit 26 dry. UV drying is required because flame drying is not complete Dries the gold colors. On the other hand, the Do not use UV radiation to dry the non-metallic paints, as the Color tears open on the surface.
  • the device according to the invention represents a particularly effective combination of printing units for drying metallic and non-metallic colors represents.
  • Fig. 2 is the gas nozzle extending over the entire width of the film web 2 1 in three segments 12 'extending over a short width, 12 '', 12 '' 'disassembled, arranged one behind the other and offset from each other are, 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 Foil web 2 formed color printing area 2 'effectively captured and flame-dried becomes.
  • FIG. 3 is an alternative embodiment of that shown in FIG. 1 (Bar-like) flame drying station shown. In this extend three bar-like gas nozzles 12a, 12a 'and 12a' 'over the entire width of the film web 2, one behind the other at the same distance. This will achieved a particularly effective sequential heating of the color printing areas. This is for the special application of larger than Length of film sheets to be dried with thick paint application.
  • A is a single, bar-shaped gas nozzle 12 extending over the entire width usually sufficient, with a concentration of the gas flame on the axial Width of the film web 2 is to be ensured.

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)
  • Drying Of Solid Materials (AREA)
  • Printing Methods (AREA)
EP98115174A 1997-08-19 1998-08-12 Procédé et appareil pour le séchage de bandes thermoplastiques imprimées avec encre métallique ou non-métallique Withdrawn EP0897797A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29824606U DE29824606U1 (de) 1997-08-19 1998-08-12 Vorrichtung zum Trocknen von mit metallhaltigen und nicht metallhaltigen Farben bedruckter Kunststoff-Folienbahnen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997135984 DE19735984A1 (de) 1997-08-19 1997-08-19 Verfahren und Vorrichtung zum Trocknen von mit metallhaltigen und nicht metallhaltigen Farben bedruckter Kunststoff-Folienbahnen
DE19735984 1997-08-19

Publications (1)

Publication Number Publication Date
EP0897797A1 true EP0897797A1 (fr) 1999-02-24

Family

ID=7839459

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98115174A Withdrawn EP0897797A1 (fr) 1997-08-19 1998-08-12 Procédé et appareil pour le séchage de bandes thermoplastiques imprimées avec encre métallique ou non-métallique

Country Status (3)

Country Link
EP (1) EP0897797A1 (fr)
DE (1) DE19735984A1 (fr)
PL (1) PL191161B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108437622A (zh) * 2018-06-21 2018-08-24 芜湖恒丰彩印包装股份有限公司 一种包装印刷机的快速干燥装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105235381A (zh) * 2015-09-28 2016-01-13 苏州中亚油墨有限公司 一种混合节能油墨固化装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4325725A1 (de) * 1993-07-30 1995-02-02 Cleanpack Gmbh Innovative Verp Verfahren und Vorrichtung zum Bedrucken von Folienbahnen im Rollen-Offsetdruck
DE4430527A1 (de) * 1994-08-27 1996-03-28 Cleanpack Gmbh Innovative Verp Verfahren und Vorrichtung zum Trocknen von im Offsetverfahren bedruckten Folienbahnen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4325725A1 (de) * 1993-07-30 1995-02-02 Cleanpack Gmbh Innovative Verp Verfahren und Vorrichtung zum Bedrucken von Folienbahnen im Rollen-Offsetdruck
DE4430527A1 (de) * 1994-08-27 1996-03-28 Cleanpack Gmbh Innovative Verp Verfahren und Vorrichtung zum Trocknen von im Offsetverfahren bedruckten Folienbahnen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108437622A (zh) * 2018-06-21 2018-08-24 芜湖恒丰彩印包装股份有限公司 一种包装印刷机的快速干燥装置
CN108437622B (zh) * 2018-06-21 2020-06-09 芜湖恒丰彩印包装股份有限公司 一种包装印刷机的快速干燥装置

Also Published As

Publication number Publication date
PL191161B1 (pl) 2006-03-31
DE19735984A1 (de) 1999-02-25
PL328047A1 (en) 1999-03-01

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