WO1994016276A1 - Trockner für bedruckte warenbahnen - Google Patents
Trockner für bedruckte warenbahnen Download PDFInfo
- Publication number
- WO1994016276A1 WO1994016276A1 PCT/EP1994/000057 EP9400057W WO9416276A1 WO 1994016276 A1 WO1994016276 A1 WO 1994016276A1 EP 9400057 W EP9400057 W EP 9400057W WO 9416276 A1 WO9416276 A1 WO 9416276A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dryer according
- web
- dryer
- zone
- inner zone
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/006—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement with movement in a spiral path
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
Definitions
- the invention relates to a dryer for printed material webs, with a spiral guide for the material web and an initially passed warm outer zone and a subsequent inner zone with a lower temperature.
- Such dryers are known for drying printed fabric webs (AUT-PS 17 13 10).
- the disadvantage of such dryers is that the material web shrinks after passing through the outer zone at a higher temperature. In principle, this is disadvantageous, in particular when an additional printing process has to be carried out in a subsequent further printing station.
- the invention has for its object to dry a freshly printed or coated web with little technical effort and in an energy-saving manner in such a way that after the drying process the web has not shrunk and contains a desired moisture.
- the dryer according to the invention solves in a simple and inexpensive manner the problem of obtaining a dimensionally stable web of material after the drying process, which, if necessary, requires a further processing step, for example a another printing process or coating process can be supplied.
- a further processing step for example a another printing process or coating process can be supplied.
- the provision of a climatic chamber with a predetermined atmosphere creates a sufficient dwell time for the material web in the dryer to ensure its desired moisture content. Due to the higher temperature in the outer zone, the drying process can be carried out quickly enough to achieve a short drying time.
- the main solvents of the printing inks are expelled in the warm outer zone. This process is supported by the supply of blown air with a desired temperature in the range from approx. 20 ° to 70 ° up to 120 ° C, depending on the material of the web.
- a very high proportion of the solvents previously contained in the material are removed. In the air-conditioned inner zone, the goods resume their desired humidity.
- the moisture of the web is scanned with appropriate sensors so that the condition of the goods and their degree of drying can be checked.
- Figure 2 - a section of the dryer in a sectional plane that is perpendicular to that of Figure 1.
- the dryer 1 has a frame 10 with feet 11.
- the web W can be removed below the dryer 1.
- Inside the dryer 1 there are two differently air-conditioned rooms, namely an outer zone 12 and an inner zone 13. Through the two differently air-conditioned zones, the web is guided all the way round from the outside to the inside, and in the corner areas at a distance from one another horizontal casters 14. The guidance is spiral and takes place from corner to corner.
- the outer zone 12 has in its interior heating plates 15 which can create the desired temperatures in this area.
- the drying temperature is set as high as possible depending on the quality of the goods. The high temperatures stabilize the material.
- the solvents present through printing and coloring emerge. * The process is supported by applying a large amount of warm air.
- a blower 16 and the blowing nozzles 17 for introducing the blowing air are only visible on one side in the drawing. However, they are preferably arranged on both sides of the outer zone and, if appropriate, also above or below.
- the blowers 16 and the blowing nozzles 17 direct the blowing air flow directly onto the material web.
- the main solvents should be expelled in the outer zone 12 with a higher temperature and high air movement and these should also be removed from the outer zone. At least a high proportion of the solvents should be removed.
- the material dries out to a great extent in the dryer due to the supply of heat and heat in the outer zone 12. This leads to dimensional changes in the material of the material web W. The material web thus shrinks. This shrinkage process must then be compensated again in the inner zone 13, which is climatized.
- the solvents are not caused solely by drying temperatures between 20 ° and 120 ° C. driven out of the material, but the process must be supported by strong air movements with a high solvent content.
- the inner zone 13 is designed as a climate zone and receives the shrunk web, which is freed from the solvents. In the inner zone, the material web is guided over deflecting rods and provided with the necessary chemical-free moisture again. Spray nozzles 19 ensure the adjustment of the air humidity in the air-conditioned inner zone 12.
- sensors 18 and 18 ' are provided at the inlet and outlet of the dryer. They scan the web and regulate the supply of moisture in the dryer. The measured values are monitored, for example via a control computer. The moisture supply in the inner zone 13 of the dryer is dependent on the measured values.
- the spray nozzles 19 serve to compensate for the shrinking process. Their arrangement and number depends on the respective conditions. In Figure 1, the spray nozzles 19 are each in the corner area of the inner zone behind the perforated heating plates 17-
- the outer zone 12 for expelling the main solvents and the inner zone 13 are separated from one another.
- the web W then runs out of the dryer through a further vacuum roller 23, which also serves as a preferred roller.
- An energy saving is achieved in that only a comparatively small proportion of solvents is obtained in the air-conditioned inner zone, because the main amount has already been driven off and removed in the outer zone. This means that the expensive, air-conditioned air in the inner zone only has to be replaced in a comparatively small amount.
- the web is guided so that it cannot stick to the heating plates.
- the blowing nozzles 17 provided on the side are set so that the solvents are blown out, but the web of material does not stick to the heating plates.
- the blowing air should bring the material web as close as possible to the heating plates, but not touch them.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Drying Of Solid Materials (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94905027A EP0629281A1 (de) | 1993-01-14 | 1994-01-11 | Trockner für bedruckte warenbahnen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19934300777 DE4300777A1 (de) | 1993-01-14 | 1993-01-14 | Zweizonentrockner insbesondere für bedruckte Warenbahnen |
DEP4300777.5 | 1993-01-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994016276A1 true WO1994016276A1 (de) | 1994-07-21 |
Family
ID=6478165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1994/000057 WO1994016276A1 (de) | 1993-01-14 | 1994-01-11 | Trockner für bedruckte warenbahnen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0629281A1 (de) |
DE (1) | DE4300777A1 (de) |
WO (1) | WO1994016276A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3873746A4 (de) * | 2019-02-05 | 2022-08-31 | Hewlett-Packard Development Company, L.P. | Seitenaustritte für mehrgangstrockner |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19901801C2 (de) * | 1999-01-19 | 2003-12-11 | Baldwin Germany Gmbh | Vorrichtung zum Konditionieren einer Papierbahn |
DE19954458A1 (de) * | 1999-11-12 | 2001-05-23 | Ltg Prozessluft Und Gebaeudete | Einhausung für eine drucktechnische Einrichtung |
DE102015222753B4 (de) | 2015-11-18 | 2019-02-28 | Koenig & Bauer Ag | Bearbeitungsvorrichtung für flaches Material und ein Verfahren zum Bearbeiten eines flachen Materials |
DE102019110248A1 (de) * | 2019-04-18 | 2020-10-22 | Canon Production Printing Holding B.V. | Trocknungsvorrichtung mit gewickelter Bahnführung |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2491714A (en) * | 1947-01-29 | 1949-12-20 | William M Scholl | Tape drying system |
AT171310B (de) * | 1950-02-09 | 1952-05-26 | Richard Kauschka | Trockenkammer |
GB898789A (en) * | 1957-09-28 | 1962-06-14 | Fan Systems Ltd | A method and means for drying textile webs |
US3239948A (en) * | 1964-04-29 | 1966-03-15 | Burroughs Corp | Drying apparatus for coated webs |
US3443322A (en) * | 1966-08-23 | 1969-05-13 | Zellweger Uster Ag | Method for controlling the drying steps on continuous sheet of material |
US3750305A (en) * | 1971-10-26 | 1973-08-07 | A Loser | Web dryer |
US4102058A (en) * | 1977-03-21 | 1978-07-25 | Foster Sr Lloyd | Fabric finishing machine |
US4365422A (en) * | 1981-04-16 | 1982-12-28 | The Ichikin, Ltd. | Method and apparatus for continual treatment of textile sheet material by application of microwaves |
US4821427A (en) * | 1988-04-18 | 1989-04-18 | E. I. Du Pont De Nemours And Company | Method and apparatus for reducing the moisture content of wet yarns |
-
1993
- 1993-01-14 DE DE19934300777 patent/DE4300777A1/de not_active Ceased
-
1994
- 1994-01-11 EP EP94905027A patent/EP0629281A1/de not_active Withdrawn
- 1994-01-11 WO PCT/EP1994/000057 patent/WO1994016276A1/de not_active Application Discontinuation
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2491714A (en) * | 1947-01-29 | 1949-12-20 | William M Scholl | Tape drying system |
AT171310B (de) * | 1950-02-09 | 1952-05-26 | Richard Kauschka | Trockenkammer |
GB898789A (en) * | 1957-09-28 | 1962-06-14 | Fan Systems Ltd | A method and means for drying textile webs |
US3239948A (en) * | 1964-04-29 | 1966-03-15 | Burroughs Corp | Drying apparatus for coated webs |
US3443322A (en) * | 1966-08-23 | 1969-05-13 | Zellweger Uster Ag | Method for controlling the drying steps on continuous sheet of material |
US3750305A (en) * | 1971-10-26 | 1973-08-07 | A Loser | Web dryer |
US4102058A (en) * | 1977-03-21 | 1978-07-25 | Foster Sr Lloyd | Fabric finishing machine |
US4365422A (en) * | 1981-04-16 | 1982-12-28 | The Ichikin, Ltd. | Method and apparatus for continual treatment of textile sheet material by application of microwaves |
US4821427A (en) * | 1988-04-18 | 1989-04-18 | E. I. Du Pont De Nemours And Company | Method and apparatus for reducing the moisture content of wet yarns |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3873746A4 (de) * | 2019-02-05 | 2022-08-31 | Hewlett-Packard Development Company, L.P. | Seitenaustritte für mehrgangstrockner |
US11639826B2 (en) | 2019-02-05 | 2023-05-02 | Hewlett-Packard Development Company, L.P. | Side exits for multi-pass dryers |
Also Published As
Publication number | Publication date |
---|---|
DE4300777A1 (de) | 1994-07-21 |
EP0629281A1 (de) | 1994-12-21 |
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