EP1414649A1 - Wiederbefeuchtungsanlage für eine materialbahn und verfahren zum verbessern der laufeigenschaften einer materialbahn - Google Patents
Wiederbefeuchtungsanlage für eine materialbahn und verfahren zum verbessern der laufeigenschaften einer materialbahnInfo
- Publication number
- EP1414649A1 EP1414649A1 EP02764519A EP02764519A EP1414649A1 EP 1414649 A1 EP1414649 A1 EP 1414649A1 EP 02764519 A EP02764519 A EP 02764519A EP 02764519 A EP02764519 A EP 02764519A EP 1414649 A1 EP1414649 A1 EP 1414649A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- material web
- rewetting
- silicone emulsion
- web
- moistening
- 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
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
- B41F23/02—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by dampening
Definitions
- the invention relates to a remoistening system for a material web and a method for improving the running properties of a material web according to the preamble of claims 1 or 8.
- a printed paper web is often dried by the action of heat in order to bind the printing ink and to prevent smearing of incompletely dried ink on rollers over which the printed web is guided.
- this treatment leads not only to the desired superficial drying of the paper but also to a loss of moisture in the material composite of the paper, which can lead to deformation or curling of the paper, which significantly affects the appearance and utility value of the finished printed product.
- silicone oil to the water has a number of advantages, including increased surface smoothness and thus reduced friction on guide rollers and former, reduced smearing and greasing on the former and in the folder etc.
- the extent to which these advantages are achieved depends, of course, on on the concentration of silicone oil in the emulsion. It is therefore common practice to adjust this concentration in such a way that the advantages mentioned are achieved to the greatest possible extent. This can be completely prevented However, do not smear or smear, even with carefully optimized active ingredient concentration in the emulsion, contamination is observed on the guide rollers of a folder in which the printed web is processed after rewetting.
- the invention has for its object to provide a rewetting system for a printed material web and a method for improving the running properties of a material web.
- the remoistening system has the advantage that it allows the level of soiling to be reduced significantly below what can be achieved by carefully optimizing the silicone content in a conventional remoistening system.
- a presumed explanation for this effect is that the applied emulsion is distributed in a different way on the material web when rewetting in two ways than when rewetting in one step.
- the applied emulsion passes through the material in a continuous stream, so that a high degree of surface moisture can only be achieved when the material has absorbed a considerable amount of moisture inside, which can be greater than it corresponds to the moisture content of the material before printing.
- Such excessive wetting of the material can be similar to the excessive drying Problems with further processing.
- the water of the first rewetting step is first soaked up by the material, while the silicone oil remains in the area of the material surface and partially closes the pores there.
- a moisture dose applied in the second step can therefore no longer penetrate the material to the same extent, it therefore remains largely concentrated on the surface and improves the surface properties of the material without excessively dampening it.
- the material web 01, z. B. by heating in a drying plant (not shown).
- B. a paper web 01 is at the entrance of the rewetting system first by two rollers 02, z. B. guided two cooling rollers 02, touch the front or back of the paper web 01.
- the paper web 01 pre-cooled in this way reaches two moistening devices 03; 04, which are arranged one behind the other on the paper web 01 and each comprise a plurality of spray nozzles 06 arranged in a row transversely to the running direction of the paper web 01, which spray a silicone oil-water emulsion finely distributed onto the two sides of the paper web 01.
- the contact with the cooling rollers 07 promotes the even distribution of the emulsion on the paper web 01 and its penetration.
- Task of these first rewetting devices 03; 04 is essentially the compensation for the loss of moisture that the paper suffered during the previous passage through the drying system.
- the paper web 01 reaches two rewetting devices 08; 09, which with the humidifiers 03; 04 are structurally identical, but can apply a silicone oil emulsion with a different dosage and / or concentration.
- This second dose strikes a paper surface that is already enriched with the silicone oil of the first dose. It therefore penetrates the paper less quickly and at the same time keeps the paper surface smoother and slippery than would be possible with simple moistening. This reduces the amount of dirt that is deposited on downstream deflection rollers 11, turning bars 12 and parts of a folder, not shown, etc. Improved cleanliness reduces the likelihood of malfunctions and reduces maintenance.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Ceramic Products (AREA)
- Coating Apparatus (AREA)
- Treatment Of Fiber Materials (AREA)
- Paper (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10139219 | 2001-08-09 | ||
DE10139219A DE10139219B4 (de) | 2001-08-09 | 2001-08-09 | Wiederbefeuchtungsanlage für eine Materialbahn und Verfahren zum Verbessern der Laufeigenschaften einer Materialbahn |
PCT/DE2002/002659 WO2003016060A1 (de) | 2001-08-09 | 2002-07-19 | Wiederbefeuchtungsanlage für eine materialbahn und verfahren zum verbessern der laufeigenschaften einer materialbahn |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1414649A1 true EP1414649A1 (de) | 2004-05-06 |
EP1414649B1 EP1414649B1 (de) | 2008-11-05 |
Family
ID=7694956
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02764519A Expired - Lifetime EP1414649B1 (de) | 2001-08-09 | 2002-07-19 | Wiederbefeuchtungsanlage für eine materialbahn und verfahren zum verbessern der laufeigenschaften einer materialbahn |
Country Status (5)
Country | Link |
---|---|
US (1) | US7029531B2 (de) |
EP (1) | EP1414649B1 (de) |
AT (1) | ATE413276T1 (de) |
DE (2) | DE10139219B4 (de) |
WO (1) | WO2003016060A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2261101B1 (es) | 2006-05-22 | 2007-12-16 | Digital Internet Transport System, S.L. | Procedimiento y dispositivo para acondicionamiento de papel. |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1101447B (de) | 1959-09-25 | 1961-03-09 | Maschf Augsburg Nuernberg Ag | Verfahren zum Vorbehandeln von in Druckmaschinen zu bedruckenden Papierbahnen |
DE3115958C2 (de) * | 1981-04-22 | 1983-12-29 | Hahne, Ernst August, 4123 Allschwill | "Verfahren zum Anfeuchten eines flexiblen bahnförmigen und mit einer durch Trocknung verfestigten Beschichtung versehenen Trägermaterials |
DE4405332A1 (de) * | 1994-02-19 | 1995-08-31 | Bse Printtechnologie | Rückbefeuchtungssystem, insbesondere für Rollenoffsetmaschinen mit Heatsettrocknung |
US6001421A (en) * | 1996-12-03 | 1999-12-14 | Valmet Corporation | Method for drying paper and a dry end of a paper machine |
ATE262614T1 (de) * | 1998-07-10 | 2004-04-15 | Metso Paper Inc | Verfahren und vorrichtung zur herstellung von oberflächenbehandeltem druckpapier |
US6095047A (en) * | 1998-07-13 | 2000-08-01 | Heidelberger Drukmaschinen Ag | Web-fed rotary printing press with apparatus for diverting a wet printed web |
DE19920091A1 (de) * | 1999-05-03 | 2000-11-16 | Baldwin Grafotec Gmbh | Verfahren und Vorrichtung zur Konditionierung einer Papierbahn |
US6299685B1 (en) * | 2000-02-11 | 2001-10-09 | Hurletron, Incorporated | Web processing with electrostatic moistening |
-
2001
- 2001-08-09 DE DE10139219A patent/DE10139219B4/de not_active Expired - Fee Related
-
2002
- 2002-07-19 EP EP02764519A patent/EP1414649B1/de not_active Expired - Lifetime
- 2002-07-19 WO PCT/DE2002/002659 patent/WO2003016060A1/de not_active Application Discontinuation
- 2002-07-19 AT AT02764519T patent/ATE413276T1/de not_active IP Right Cessation
- 2002-07-19 DE DE50212990T patent/DE50212990D1/de not_active Expired - Fee Related
- 2002-07-19 US US10/485,112 patent/US7029531B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO03016060A1 * |
Also Published As
Publication number | Publication date |
---|---|
US7029531B2 (en) | 2006-04-18 |
ATE413276T1 (de) | 2008-11-15 |
EP1414649B1 (de) | 2008-11-05 |
DE10139219A1 (de) | 2003-02-27 |
US20040173112A1 (en) | 2004-09-09 |
WO2003016060A1 (de) | 2003-02-27 |
DE10139219B4 (de) | 2004-10-07 |
DE50212990D1 (de) | 2008-12-18 |
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