EP1210481A1 - Method and device for single- or double-sided application - Google Patents
Method and device for single- or double-sided applicationInfo
- Publication number
- EP1210481A1 EP1210481A1 EP01954020A EP01954020A EP1210481A1 EP 1210481 A1 EP1210481 A1 EP 1210481A1 EP 01954020 A EP01954020 A EP 01954020A EP 01954020 A EP01954020 A EP 01954020A EP 1210481 A1 EP1210481 A1 EP 1210481A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- material web
- application
- endless belt
- medium
- roller
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/70—Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group
- D21H23/72—Plural serial stages only
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
- D21H27/40—Multi-ply at least one of the sheets being non-planar, e.g. crêped
Definitions
- the invention relates to a method according to the preamble of claim 1 and an apparatus for performing the method according to the preamble of claim 10.
- the liquid or pasty medium is applied directly to the surface of the running material web by an application device, which is supported during the application on a rotating counter surface, such as a counter roller or a rotating belt.
- a rotating counter surface such as a counter roller or a rotating belt.
- the liquid or pasty medium is first applied to a carrier surface, e.g. applied to the surface of a roller serving as an application roller or to the surface of one side of a flexible belt in order to be transferred from there to the material web.
- This indirect application is usually carried out using a so-called film press.
- film press These are two rollers that form a nip with each other, which transfer the medium one after the other or simultaneously to both sides of the material web - or only to one side of the web.
- Endless belt with an application roller a press nip (press nip) through which the web passes.
- a press shoe is arranged inside the endless belt, which in this case leads to an extension of the nip and that applied with the same unit Pressed application medium into the web. This should improve the order result, especially by avoiding film splitting.
- the raw material quality of the paper or cardboard is increasingly decreasing. This applies in particular to the production of corrugated base paper, which is made to a large extent from waste paper.
- FbM mass per unit area
- This low raw material quality and lower FbM mean that the web strength after the film press application is only very low, so that the web breaks again and again after the application in the free pull of the web. That means enormous production downtimes and the resulting high costs.
- Film presses also called speedsizer, speedcoater, optisizer, metering sizepress
- nip flattening and displacements in the nip These effects in turn have a particularly negative impact on corrugated board production.
- the web demolition is used in practice, especially in the production of
- Corrugated base paper counteracted by increasingly using modified starches with low viscosity and high solids content as the application medium.
- the low viscosity is said to have good penetration and the high Solids content, on the other hand, is said to cause low rewetting and thus to allow only a slight drop in strength after the film press.
- Modified starches are more expensive than native starches.
- the invention is therefore based on the object of developing a method and a device for producing corrugated base paper with which a deep penetration of the starch-containing application medium into the material web and independently of the area-related mass (FbM) is possible while improving the utilization of the starch properties and web breaks after application are largely avoided.
- the object is achieved with a method according to the characterizing part of claim 1 and with a device according to the characterizing part of claim 10.
- the inventors have recognized that the starches used hitherto, modified in viscosity and solids content, bring about only an insignificant increase in the strength of the coated or impregnated material web compared to native starches.
- the pre-dried corrugated raw paper web is only fed to a press nip after it has been coated and then only passes through it, and in addition the wet, coated or impregnated, or glued web is only then dried and, in addition, an essential portion after the nip ( ideally, this can be done up to the first drying cylinder of the subsequent dryer section) without free tension, the starch yield of the application medium is significantly higher. Even at low FbM a complete penetration up to the "middle of the sheet" can be achieved, which increases the strength of the Web is increased.
- Another advantage is that it is now possible to use native starches despite the strong rewetting. Squeezes in corrugated base paper production are reliably avoided. In addition, these measures according to the invention lead to far fewer web breaks after the application process.
- a particularly advantageous solution of the invention consists in supporting the moist web by means of at least one flexible band.
- the support surface on one or both sides of the web can be extended as desired.
- FIG. 1 shows a first example of the solution according to the invention in a schematically illustrated side view of the device according to the invention.
- a pre-dried corrugated base paper web B is shown, which already has a dry content of approximately 85 to 95% from a last drying cylinder 2 of the predrying group 3 of a machine for producing the corrugated base paper onto a first application roller 4 runs.
- This application roller 4 is assigned an application device 5 with which the web B is coated on its upper side B 0 .
- All known devices such as a short dwell time applicator (SDTA) or LDTA (for long dwell time), free jet nozzle applicators or a curtain coating, come as application devices. nozzle into consideration. With this application on one or both sides, a pre-penetration of the medium to be applied is achieved.
- a transfer belt which is a flexible endless belt 6 made of a plastic or rubber, is guided around a further roller 16, a support or counter roller 7 and several guide or deflection rollers 8.
- a tensioning roller 21 which is mounted on the paper machine base PMB, acts on the belt 6 from the outside and thereby tensions it.
- a two-sided order is to be carried out.
- a further application device 5a is therefore associated with the support roller 7.
- the application medium is then transferred from the endless belt 6 to the underside Bu of the web B as soon as the belt 6 comes into contact with the web B.
- the application with the devices 5 and 5a can take place simultaneously or in succession, with a time delay. If only a one-sided order is to be placed on the top or bottom of the web, one of the unused order devices can be swiveled away.
- the rollers 4 and 7 do not form a press nip with one another here. This is intentional here so that there are no deformations of the web and there is no demolition.
- FIG. 2 which has essentially the same reference numerals for the same parts as FIG. 1, shows a further variant of the embodiment.
- the application device 5 is arranged here, with which a direct application to the web top B 0 takes place.
- a further endless belt instead of the roller 4, with which a support of the web B and, in turn, an indirect application to the material web can be carried out on the same unit.
- the web B After passing through the penetration path Ps, the web B runs together with the belt 6, which can be used as an application and support belt, through a press zone 9.
- the press zone can be implemented in different ways.
- the use of a shoe press known per se is appropriate here.
- the pre-penetrated starch can, so to speak, "post-penetrate” and thereby anchor itself firmly in the web B.
- a further possibility of realizing the pressing zone can be the use of a further flexible endless belt 10, which runs over guide rollers 11, 12, 13.
- the belt 10 should run with its inner surface over a sliding surface of a press shoe 14, the sliding surface forming a press nip N with a roller 15, which can also be a suction roller, for example.
- This press shoe 14 is only shown in simplified form and can extend over a wide area of the belt 10.
- the press zone can also consist of the two rolls 15 and 16 forming a press nip N, the roll 16 being shown in dash-dot lines in FIGS. 1 and 2 and embodying a so-called flexonip roll known from the press section.
- This version is already known from DE 198 20 516 A1, from which, however, no statements regarding the support of the web can be found after the order has been pressed in.
- the roller 15 is at the same time one of those rollers around which the endless belt 6 runs and the said counter surface to the roller 16 and / or as a press, support, and possibly as
- the endless belt 10 and the endless belt 6 each provide a support surface between them for the web B penetrated after the nip N.
- the support surface SF extends essentially to the first drying cylinder 18 of the following dryer section, for example the after-dryer section 19 of the paper machine.
- the endless belt 10 can extend its support surface SF, for example by adjusting the guide roller 13, and / or the belt 6 can also extend its support surface by adjusting the upper guide roller 8 to a desired extent.
- a blowing or suction box 20 or some other transfer aid can ensure the transfer of the web or a transfer strip to the drying cylinder 18.
- the belt 10 (or also a separate belt 10a) can be deflected around the roller 4 or around an adequately arranged guide roller.
- the belt can also be additionally supported by the roller 11.
- Conceivable is also the arrangement of a further endless belt 10a instead of the roller 4, with which said support of the web B and also the indirect application at the same position as with the roller 4 with the same unit on the material web can be made.
- the belts 6 and 10 are equipped with a drive.
- the rollers 4, 7, 15 are driven for this.
- This drive is located in volume 6 on the Nip N in order to ensure that the train is sufficiently pulled.
- tensioning devices e.g. tensioning roller 21
- tension regulators for the belts, as well as the adjustment option, as shown with a double arrow on the guide rollers.
- a suction roll 22 with or without a foil 23 is provided after the press zone 9 or after the endless belt 10. This arrangement makes it possible to transfer the web without a rope.
- one or more spray tubes which selectively apply liquid to the belt or web, are also attached for the safe transfer of the web B before the belt 6 runs onto the applicator roller 4 Apply B to ensure adhesion of the transfer strip or the entire web.
- the section of a paper machine shown in FIGS. 1 and 2 essentially corresponds to a "closed transfer" into the dryer section.
- the strength gain of the paper and cardboard web is not only about 20N /% starch as before, but 40N /% starch. This can reduce the amount of starch by 30% while maintaining the same quality or the quality can be increased accordingly with the same amount of starch. This is particularly important given the declining quality of the raw materials used to manufacture corrugated base paper.
Landscapes
- Paper (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
- Vehicle Step Arrangements And Article Storage (AREA)
- Vehicle Body Suspensions (AREA)
- Installation Of Indoor Wiring (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10033213A DE10033213A1 (en) | 2000-07-07 | 2000-07-07 | Method and device for single or double-sided application |
DE10033213 | 2000-07-07 | ||
PCT/EP2001/007785 WO2002004745A1 (en) | 2000-07-07 | 2001-07-06 | Method and device for single- or double-sided application |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1210481A1 true EP1210481A1 (en) | 2002-06-05 |
EP1210481B1 EP1210481B1 (en) | 2010-04-07 |
Family
ID=7648229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01954020A Expired - Lifetime EP1210481B1 (en) | 2000-07-07 | 2001-07-06 | Method and device for single- or double-sided application |
Country Status (5)
Country | Link |
---|---|
US (1) | US6893682B2 (en) |
EP (1) | EP1210481B1 (en) |
AT (1) | ATE463621T1 (en) |
DE (2) | DE10033213A1 (en) |
WO (1) | WO2002004745A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023169762A1 (en) * | 2022-03-09 | 2023-09-14 | Voith Patent Gmbh | Application unit and method |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10212818A1 (en) * | 2002-03-22 | 2003-10-02 | Voith Paper Patent Gmbh | applicator |
DE10244957A1 (en) * | 2002-09-26 | 2004-04-01 | Voith Paper Patent Gmbh | Device for applying liquid or pasty application medium to a material web, in particular made of paper or cardboard |
DE10305606A1 (en) * | 2003-02-11 | 2004-08-19 | Voith Paper Patent Gmbh | Machine used in the manufacture of paper and cardboard comprises a drying arrangement consisting of a drying cylinder, a rolling unit lying in the running direction of the machine and a transfer belt for transferring a fibrous strip |
FI115732B (en) * | 2003-06-05 | 2005-06-30 | Metso Paper Inc | Method and apparatus for surface sizing of paper or board |
EP1697584A1 (en) | 2003-11-28 | 2006-09-06 | Voith Paper Patent GmbH | Paper machine |
WO2006005738A2 (en) * | 2004-07-12 | 2006-01-19 | Voith Patent Gmbh | Method for the application of an application medium and method and machine for production of a fibre web |
DE102004036277A1 (en) * | 2004-07-27 | 2006-02-16 | Voith Paper Patent Gmbh | Machine for producing a fibrous web with at least one device for applying a coating medium |
DE102004036276A1 (en) * | 2004-07-27 | 2006-02-16 | Voith Paper Patent Gmbh | Method and device for applying a coating medium in a machine for producing a fibrous web |
DE102007009399A1 (en) | 2007-02-28 | 2008-09-04 | Voith Patent Gmbh | Method for indirect application of liquid by pasty medium on one or both sides of running paper, cardboard, or other fibrous material web, involves applying medium on transfer element, and transferring medium |
US7758934B2 (en) * | 2007-07-13 | 2010-07-20 | Georgia-Pacific Consumer Products Lp | Dual mode ink jet paper |
US7740744B2 (en) * | 2007-09-21 | 2010-06-22 | Georgia-Pacific Consumer Products Lp | Method and apparatus for removing residual tissue from parent rolls |
DE102008042072A1 (en) | 2008-09-15 | 2010-03-18 | Voith Patent Gmbh | Process for the preparation of liquid or pasty application media, in particular starch for application to a fibrous web, in particular paper or board web and application system |
DE102009003065A1 (en) * | 2009-05-13 | 2010-11-18 | Voith Patent Gmbh | Device for single or double side coating of a fluid to pasty coating medium on a running paper-, cardboard- or other fiber material web during its production and/or finishing process, comprises support elements |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR359930A (en) * | ||||
JPS4841007A (en) * | 1971-09-30 | 1973-06-16 | ||
DE4446308C2 (en) | 1994-12-23 | 2000-10-26 | Voith Sulzer Papiermasch Gmbh | Device for applying a liquid or pasty medium to a running web of material |
FI110440B (en) * | 1996-04-04 | 2003-01-31 | Metso Paper Inc | Transferring the web from the last press nip in the paper machine to the next drying section |
DE19716714A1 (en) * | 1997-04-21 | 1998-10-22 | Bhs Corr Masch & Anlagenbau | Method of coating adhesive onto web of corrugated material carried out by textured belt or screen |
DE19823739A1 (en) * | 1997-10-24 | 1999-11-11 | Voith Sulzer Papiertech Patent | Paper or card coating unit which applies fluid or viscous liquid to wet web |
FI104196B (en) * | 1998-03-03 | 1999-11-30 | Valmet Corp | Method and arrangement for coating a paper or board web of mobility |
JP2002513105A (en) * | 1998-04-24 | 2002-05-08 | ヴァルメット コーポレイション | Coating method for moving web and arrangement for coating |
US6228216B1 (en) * | 1998-07-10 | 2001-05-08 | Kimberly-Clark Worldwide, Inc. | Transfer of a cellulosic web between spaced apart transport means using a moving air as a support |
DE69922041T2 (en) * | 1998-08-04 | 2005-10-13 | Metso Paper, Inc. | METHOD AND DEVICE FOR TREATING PAPER OR PAPER WEBSTS |
-
2000
- 2000-07-07 DE DE10033213A patent/DE10033213A1/en not_active Withdrawn
-
2001
- 2001-07-06 WO PCT/EP2001/007785 patent/WO2002004745A1/en active Application Filing
- 2001-07-06 US US10/069,815 patent/US6893682B2/en not_active Expired - Fee Related
- 2001-07-06 EP EP01954020A patent/EP1210481B1/en not_active Expired - Lifetime
- 2001-07-06 AT AT01954020T patent/ATE463621T1/en active
- 2001-07-06 DE DE50115422T patent/DE50115422D1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0204745A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023169762A1 (en) * | 2022-03-09 | 2023-09-14 | Voith Patent Gmbh | Application unit and method |
Also Published As
Publication number | Publication date |
---|---|
WO2002004745A1 (en) | 2002-01-17 |
ATE463621T1 (en) | 2010-04-15 |
US6893682B2 (en) | 2005-05-17 |
US20020164428A1 (en) | 2002-11-07 |
DE10033213A1 (en) | 2002-01-17 |
EP1210481B1 (en) | 2010-04-07 |
DE50115422D1 (en) | 2010-05-20 |
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Inventor name: VOGT, MARTIN Inventor name: HAUNLIEB, HERBERT Inventor name: BRUNNAUER, ERICH Inventor name: GANSBERGER, WILHELM Inventor name: LEHNER-DITTENBERGER, STEFAN Inventor name: HALMSCHLAGER, GUENTER |
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