EP0658427A1 - Dispositif de séchage - Google Patents
Dispositif de séchage Download PDFInfo
- Publication number
- EP0658427A1 EP0658427A1 EP94119053A EP94119053A EP0658427A1 EP 0658427 A1 EP0658427 A1 EP 0658427A1 EP 94119053 A EP94119053 A EP 94119053A EP 94119053 A EP94119053 A EP 94119053A EP 0658427 A1 EP0658427 A1 EP 0658427A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- paper web
- air
- drying device
- guide surface
- drying
- 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
Links
- 238000001035 drying Methods 0.000 claims abstract description 43
- 239000002904 solvent Substances 0.000 claims description 23
- 238000007664 blowing Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 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
- B41F23/0423—Drying webs by convection
- B41F23/0433—Drying webs by convection using steam
-
- 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
- B41F23/0423—Drying webs by convection
- B41F23/0426—Drying webs by convection using heated air
Definitions
- the invention relates to a drying device of the type laid down in the preamble of claim 1.
- the printing units which a paper web travels at high speed, are arranged horizontally next to one another.
- a box-like dryer housing which is open at the bottom and into which the paper web emerging from the printing unit runs.
- the paper web is guided over the longest possible distance with the aid of guide and deflection rollers, which are referred to as guide spindles, before it reaches the next printing unit from above in order to be printed with another color.
- each of the dryer housings In order to carry out the drying, so-called impact jet nozzle arrangements are located in each of the dryer housings, each of which is arranged in pairs on opposite sides of the paper web.
- Each of these impingement jet nozzle arrangements comprises a plurality of mutually parallel nozzle tubes which are arranged one behind the other in the direction of movement of the paper web such that they extend substantially across the entire width of the paper web transversely to the direction of movement.
- Each of the nozzle tubes has a multiplicity of air outlet nozzles with which it is located at a short distance from the respective side of the paper web.
- a separate blower is provided for each impingement jet nozzle arrangement, which draws in air from the interior of the dryer housing and feeds it to the nozzle tubes, through the nozzle openings of which the air exits in a jet and impinges on the relevant paper web side. Since this air is heated, it leads to drying of the ink applied in the previous printing unit, i.e. the solvent of the paint, for example toluene, is caused to largely diffuse out of the paint application and the paper. As a result, the air circulated in the dryer housing by the fans is enriched with solvent vapors. In order not to allow their concentration to rise above a permissible value (generally 50% of the lower explosion limit), air must be constantly extracted from the dryer housing and fed to a solvent separator system.
- a permissible value generally 50% of the lower explosion limit
- a high expenditure of energy is required for the operation of the known dryer devices, and the object of the invention is to reduce this expenditure of energy without deteriorating the dryer performance.
- a sufficiently high pressure is created in this air gap to create a Exclude contact between the paper web and the guide surface with certainty.
- a device can preferably be provided for blowing blown air into the air gap between the paper web and the guide surface. The amount of air required for this is considerably less than the amount of air circulated by the second impingement jet nozzle arrangement and the associated blower, which was previously considered necessary.
- one of two impingement jet nozzle arrangements and the associated blower can thus be dispensed with without reducing the drying effect, so that a 50% reduction in blower output is achieved.
- a rotogravure printing machine that comprises eight printing units for double-sided 4-color printing, this leads to immense energy savings.
- a particular advantage of the drying device according to the invention is that the steam lance just described can be integrated into it. It is preferably located directly behind the device for blowing in air Air is arranged in the air gap formed between the paper web and the guide surface in such a way that the water vapor also flows into this air gap. In contrast to the prior art, in which the major part of the water vapor does not penetrate the paper web, this enables a very intensive moistening of the paper web, which also saves thermal energy.
- the heat content of the water vapor contributes to an increased diffusion of the solvent out of the paper and the applied color layer.
- the housing of the drying device according to the invention is designed such that it is completely closed, with the exception of two narrow gaps through which the paper web enters and exits, the air circulating in the dryer housing is enriched with moisture , so that the paper web shrinks less from the outset.
- the measures according to the invention not only significantly reduce the electrical power required for the operation of the drying device, but also considerably reduce the path on which the paper web has to pass through the drying device in order to carry out further processing without the risk of blurring the Allow color.
- the drying section is so short that the drying device can be traversed in a straight line by the paper web between the inlet and outlet nip and does not require any lead screws.
- Such a drying device is therefore ideally suited for installation in a rotogravure printing machine, in which the printing units are arranged one above the other in tower construction and the paper web in each of the towers is only guided through the forme cylinders and impressioners of the printing units, but is otherwise guided without contact, as is the case in the older one European patent application 93 117 070.8.
- the drying device 1 comprises a largely closed housing 2, in the left part of the figure in which a blower (not shown in more detail) is accommodated, which draws air from the interior of the housing and blows onto a paper web 6 in the direction of the arrows L via a plurality of nozzle pipes 4 which passes through the dryer housing 2 in the direction of the arrows P from top to bottom. It is assumed that the printing unit of a rotogravure printing machine is located directly above the drying device 1, in which the paper web has been printed on the left side in the figure.
- a plurality of mutually parallel nozzle tubes 4 are arranged such that they are opposite one another in the direction of movement of the paper web 6 to the freshly printed side of the paper web 6.
- the nozzle tubes 4, each of which has a multiplicity of air outlet nozzles, extend transversely to the direction of movement of the paper web 6 approximately over its entire width.
- the connecting lines via which the air coming from the blower is fed to the nozzle tubes 4 cannot be seen in the section of the figure.
- a hollow body 8 with an airfoil-shaped cross section is arranged such that it extends with a flat surface area 9 of its outer surface parallel to the paper web 6 and at a short distance from it. Perpendicular to the plane of the drawing of the figure, the hollow body 8 also has an extent that corresponds approximately to the width of the paper web transverse to the direction of movement.
- the flat surface area 9 merges into a curved surface area 10, the surface lines of which run perpendicular to the plane of the drawing parallel to the paper web 6, but which is bent away from the paper web in the section shown such that the air gap 11 formed between the paper web 6 and the surface areas 9, 10 widens towards the entry end of the paper web.
- the housing 2 is preferably designed as an almost closed unit which has only a very narrow inlet gap 14 for the paper web 6 at its upper end and an equally narrow outlet gap 15 at its lower end, it can be advantageous for stabilizing the air cushion built up in the air gap 11 be to supply compressed air in the region of the upper end of the air gap, as indicated by the arrows D.
- the interior of the hollow body 8 can be used as a compressed air line space.
- the amount of blown air required per unit of time is substantially less than the amount of air blown against the paper web 6 by the opposing jet jet arrangement formed by the nozzle tubes 4. The energy required for the generation and supply of this blown air is therefore negligibly small compared to the blower output of the impingement jet arrangement.
- a steam lance 18 is installed, which is formed by a tube which extends transversely to the direction of movement of the paper web 6 and over its entire width and which has a multiplicity of nozzle openings which make it possible for water vapor supplied through the tube in the direction of the Blow arrow W onto the paper web.
- This moistening of the paper web is necessary in order to prevent the paper web from shrinking due to water removal which otherwise takes place in the dryer, which would impair the register accuracy.
- This arrangement of the steam lance not only makes it possible to downsize the entire printing press but also has the advantage that the outflowing steam can be brought into very intensive contact with the paper web. This reduces the amount of steam required, which helps to save energy.
- the heat content of the steam in the dryer is used to accelerate the diffusion of the solvent out of the paint. So drying energy can also be saved.
- the pipes which serve to discharge air laden with solvent vapors from the housing 2 and to feed them to an adsorption and separation system are also omitted in the figure, as are optional pipes through which the air is preheated and possibly already contains small amounts of solvent , can for example be fed from a final dry section of the printing press.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drying Of Solid Materials (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Adjustment And Processing Of Grains (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4343085 | 1993-12-16 | ||
DE4343085 | 1993-12-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0658427A1 true EP0658427A1 (fr) | 1995-06-21 |
EP0658427B1 EP0658427B1 (fr) | 1997-03-19 |
Family
ID=6505279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94119053A Expired - Lifetime EP0658427B1 (fr) | 1993-12-16 | 1994-12-02 | Dispositif de séchage |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0658427B1 (fr) |
JP (1) | JPH07232428A (fr) |
AT (1) | ATE150371T1 (fr) |
CA (1) | CA2138175A1 (fr) |
CZ (1) | CZ314494A3 (fr) |
DE (1) | DE59402139D1 (fr) |
FI (1) | FI945825A (fr) |
HU (1) | HU213665B (fr) |
PL (1) | PL306334A1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19901801A1 (de) * | 1999-01-19 | 2000-07-27 | Baldwin Grafotec Gmbh | Vorrichtung zum Konditionieren einer Papierbahn |
DE19918669A1 (de) * | 1999-04-23 | 2000-10-26 | Heidelberger Druckmasch Ag | Trockner mit integrierter Kühleinheit |
DE19920091A1 (de) * | 1999-05-03 | 2000-11-16 | Baldwin Grafotec Gmbh | Verfahren und Vorrichtung zur Konditionierung einer Papierbahn |
WO2009155889A1 (fr) | 2008-06-23 | 2009-12-30 | Prinovis Ltd. & Co. Kg | Installation de séchage pour bandes de matière continues sous forme de bandes de papier imprimées et/ou enduites |
EP1790471A3 (fr) * | 2005-11-16 | 2011-03-02 | OFFICINE MECCANICHE GIOVANNI CERUTTI S.p.A. | Dispositif pour sécher une bande imprimée dans une machine d'impression |
CN111137011A (zh) * | 2018-11-05 | 2020-05-12 | 海德堡印刷机械股份公司 | 用于制造印刷品的机器 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009073011A (ja) * | 2007-09-20 | 2009-04-09 | Seiko Epson Corp | 液体噴射装置 |
CN107244144A (zh) * | 2017-07-26 | 2017-10-13 | 湖州佳宁印刷有限公司 | 一种开合式印刷干燥收纸一体印刷机 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH494127A (de) * | 1968-10-31 | 1970-07-31 | Maschf Augsburg Nuernberg Ag | Trockeneinrichtung für eine in zwei Drehrichtungen zu betreibende Rotationstiefdruckmaschine in Reihenbauart |
EP0035741A1 (fr) * | 1980-03-07 | 1981-09-16 | Ramisch Kleinewefers GmbH | Dispositif pour imprimer en plusieurs couleurs une bande en matière thermoplastique |
DE3114406A1 (de) * | 1981-04-09 | 1982-11-04 | Lehmacher, Hans, 5216 Niederkassel | Druckmaschine zum bedrucken einer folienbahn aus kunststoff |
EP0553799A1 (fr) * | 1992-01-31 | 1993-08-04 | OFFICINE MECCANICHE GIOVANNI CERUTTI S.p.A. | Dispositif d'aération et de séchage pour une machine d'impression |
EP0598240A1 (fr) * | 1992-10-28 | 1994-05-25 | U.E. SEBALD DRUCK UND VERLAG GmbH | Rotative d'impression en creux et procédé |
-
1994
- 1994-12-02 AT AT94119053T patent/ATE150371T1/de not_active IP Right Cessation
- 1994-12-02 EP EP94119053A patent/EP0658427B1/fr not_active Expired - Lifetime
- 1994-12-02 DE DE59402139T patent/DE59402139D1/de not_active Expired - Fee Related
- 1994-12-12 FI FI945825A patent/FI945825A/fi unknown
- 1994-12-13 JP JP6332629A patent/JPH07232428A/ja active Pending
- 1994-12-14 CZ CZ943144A patent/CZ314494A3/cs unknown
- 1994-12-14 HU HU9403598A patent/HU213665B/hu not_active IP Right Cessation
- 1994-12-15 CA CA002138175A patent/CA2138175A1/fr not_active Abandoned
- 1994-12-16 PL PL94306334A patent/PL306334A1/xx unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH494127A (de) * | 1968-10-31 | 1970-07-31 | Maschf Augsburg Nuernberg Ag | Trockeneinrichtung für eine in zwei Drehrichtungen zu betreibende Rotationstiefdruckmaschine in Reihenbauart |
EP0035741A1 (fr) * | 1980-03-07 | 1981-09-16 | Ramisch Kleinewefers GmbH | Dispositif pour imprimer en plusieurs couleurs une bande en matière thermoplastique |
DE3114406A1 (de) * | 1981-04-09 | 1982-11-04 | Lehmacher, Hans, 5216 Niederkassel | Druckmaschine zum bedrucken einer folienbahn aus kunststoff |
EP0553799A1 (fr) * | 1992-01-31 | 1993-08-04 | OFFICINE MECCANICHE GIOVANNI CERUTTI S.p.A. | Dispositif d'aération et de séchage pour une machine d'impression |
EP0598240A1 (fr) * | 1992-10-28 | 1994-05-25 | U.E. SEBALD DRUCK UND VERLAG GmbH | Rotative d'impression en creux et procédé |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19901801A1 (de) * | 1999-01-19 | 2000-07-27 | Baldwin Grafotec Gmbh | Vorrichtung zum Konditionieren einer Papierbahn |
DE19901801C2 (de) * | 1999-01-19 | 2003-12-11 | Baldwin Germany Gmbh | Vorrichtung zum Konditionieren einer Papierbahn |
DE19918669A1 (de) * | 1999-04-23 | 2000-10-26 | Heidelberger Druckmasch Ag | Trockner mit integrierter Kühleinheit |
US6481118B1 (en) | 1999-04-23 | 2002-11-19 | Heidelberger Druckmaschinen Ag | Dryer with integrated cooling unit and method of operation |
DE19920091A1 (de) * | 1999-05-03 | 2000-11-16 | Baldwin Grafotec Gmbh | Verfahren und Vorrichtung zur Konditionierung einer Papierbahn |
EP1790471A3 (fr) * | 2005-11-16 | 2011-03-02 | OFFICINE MECCANICHE GIOVANNI CERUTTI S.p.A. | Dispositif pour sécher une bande imprimée dans une machine d'impression |
WO2009155889A1 (fr) | 2008-06-23 | 2009-12-30 | Prinovis Ltd. & Co. Kg | Installation de séchage pour bandes de matière continues sous forme de bandes de papier imprimées et/ou enduites |
CN111137011A (zh) * | 2018-11-05 | 2020-05-12 | 海德堡印刷机械股份公司 | 用于制造印刷品的机器 |
Also Published As
Publication number | Publication date |
---|---|
CA2138175A1 (fr) | 1995-06-17 |
FI945825A (fi) | 1995-06-17 |
DE59402139D1 (de) | 1997-04-24 |
CZ314494A3 (en) | 1995-07-12 |
JPH07232428A (ja) | 1995-09-05 |
PL306334A1 (en) | 1995-06-26 |
HU9403598D0 (en) | 1995-02-28 |
ATE150371T1 (de) | 1997-04-15 |
HUT69517A (en) | 1995-09-28 |
HU213665B (en) | 1997-09-29 |
EP0658427B1 (fr) | 1997-03-19 |
FI945825A0 (fi) | 1994-12-12 |
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