WO2009101253A1 - Method for improving the runnability of a printing press in the printing process - Google Patents

Method for improving the runnability of a printing press in the printing process Download PDF

Info

Publication number
WO2009101253A1
WO2009101253A1 PCT/FI2009/050105 FI2009050105W WO2009101253A1 WO 2009101253 A1 WO2009101253 A1 WO 2009101253A1 FI 2009050105 W FI2009050105 W FI 2009050105W WO 2009101253 A1 WO2009101253 A1 WO 2009101253A1
Authority
WO
WIPO (PCT)
Prior art keywords
printing
cross
tension profile
roll
directional tension
Prior art date
Application number
PCT/FI2009/050105
Other languages
French (fr)
Inventor
Tatu PITKÄNEN
Petteri Lannes
Mika Sundquist
Teuvo LEPPÄNEN
Raimo Rajala
Matti Innala
Teemu KÄLKÄJÄ
Klaus JERNSTRÖM
Mika J. Kosonen
Petri V. Hirvonen
Erik Ohls
Jorma Kinnunen
Mika Tammenoja
Pekka Pakarinen
Markku Karlsson
Juha Vattulainen
Original Assignee
Upm-Kymmene Oyj
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 Upm-Kymmene Oyj filed Critical Upm-Kymmene Oyj
Publication of WO2009101253A1 publication Critical patent/WO2009101253A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/28—Wound package of webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/84—Paper-making machines

Definitions

  • the invention relates to a method for improving the runnability of a printing press in the printing process according to the introduction of claim 1.
  • the paper produced by a paper machine i.e. a mill roll
  • a paper machine i.e. a mill roll
  • the printing rolls made from the edge areas of a mill roll have cross-directional variations such that a compromise must be made on the desired uniform quality, for example, in tension, moisture and thickness profiles.
  • Printing rolls are made from a mill roll by cutting the wide paper web, lengthwise in relation to the length of the paper web of the mill roll, into several paper webs.
  • runnability of the printing rolls made from the mill roll can be predicted by dividing the tension profile of the mill roll into sub-profiles the width of printing rolls which predict the shape and variation area of the tension profile created in a printing press.
  • the objective is a uniform or evenly-changing tension profile but, frequently, the tension profile of, in particular, the edge rolls is clearly slanted.
  • the variation area of the tension profile can be large in comparison to the running tension used. In that case, a larger value must be used for the running tension of the printing press in order that the web can be made tight along its entire length.
  • the printing rolls from the edge areas have cross-directional variations such that, in practice, a compromise must be made on the desired uniform quality. This occurs, for example, in tension profiles. Difficulties may arise in runnability, for example, when printing in succession with rolls from opposite edges whose tension profiles are slanted in different directions.
  • the printer receives information regarding the basis weight of the paper and the roll position of the change. This information is also useful when used to advantage but the majority of measurement information remains with the paper manufacturer and is never utilized in the printing process. hi some cases, the roll position is used as a sorting criterion but when cross- directional profile information has not been available, sorting could not have been done using other, more accurate criteria.
  • the object of the invention is to solve the above mentioned problems.
  • the object of the invention is achieved by a method according to independent claim 1.
  • the preferred embodiments of the invention are presented in the dependant claims.
  • the method presented for improving the runnability of a printing press in the printing process is based on the fact that, in the method, printing rolls are used whose cross-directional tension profile is measured in the paper manufacturing process, and that, in the method, the printing rolls used in the printing process are selected by using as one selection criterion the cross-directional tension profile of the printing roll measured in the paper manufacturing process.
  • Measuring the cross-directional tension profile in the paper manufacturing process is preferably, but not necessarily, done using a method or device described in publication WO 2006/075055 (METSO PAPER, INC.) and/or an iROLL device (METSO PAPER, INC.).
  • tension profile measurements made by a paper machine it is possible to predict runnability of printing rolls by dividing the tension profile into sub- profiles the width of printing rolls by means of which it is possible to estimate the shape and variation area of the tension profile and then printing press runnability.
  • the measured tension profiles can be used in sorting printing rolls used in the printing press and thus to improve printing press runnability.
  • different kinds of parameters can be calculated which describe the variation area of the tension profile.
  • runnability criteria can be evaluated, for example, risks of breakage.
  • the runnability of printing roll papers can be predicted in advance by means of tension profiles measured by the paper machine.
  • the tension profile is passed on to the printing rolls whose tension profile is seen from the tension profile of the mill roll when the position of the printing roll is known.
  • This information can be transferred for the use of the printer and printing rolls can be sorted, for example, on the basis of tension profiles. From the tension profile, parameters describing the scope of tension variation can be calculated by means of which runnability problems of the printing rolls can be predicted. If needed, those kinds of printing rolls which are likely to cause runnability problems can be removed in advance. By sorting printing rolls to be printed in order according to the same kinds of profiles, runnability can be improved and thus waste reduced in the printing process.
  • the runnability of a printing press can be improved by utilizing characteristics of the paper measured by the paper machine, such as different kinds of profiles and parameters calculated from these on the basis of which the printing rolls can even be sorted.
  • This kind of transfer of information and data can be automated by arranging a data communications connection between the paper machine and the printing press. Through this same data communications channel, the paper manufacturer could receive feedback from the printing house, for example, regarding runnability problems with the rolls.
  • Above mentioned data transfer requires agreements and long- term research cooperation between the paper manufacturer and the printer. In the area of maintenance, this kind of remote use systems and outsourcing are quite common.
  • the paper manufacturer has vast and diverse measurement information regarding the paper for each and every mill roll. By using this information more than is currently done in cooperation with the printing house, the printing press runnability can be improved. As cooperation develops, the information can be transferred automatically using data communications connections within an agreed scope.
  • runnability problems may occur, for example, when printing in succession rolls that are from opposite edges of one mill roll of the paper machine whose tension profiles are slanted in different directions. By sorting printing rolls such that the same kinds of profiles are printed in succession, runnability problems can be avoided and savings made on expenses.
  • a cross-directional profile can be, for example, a tension, thickness or moisture profile or a corresponding profile known from the paper machine.
  • the paper machine can also be used to "tailor" a desired cross-directional profile providing good runnability according to the printing process and/or type of printing press.
  • the runnability of the press can be further improved - as an example of this type is the moisture of the paper which has influence on many other characteristics of the paper.
  • parameters for the printing rolls which describe the scope of the variation.
  • the parameters can be used to classify the runnability risks and thus to predict the problems and, if needed, even to reject bad printing rolls.
  • printing rolls can be sorted such that the same kinds of tension profiles are printed in succession.
  • the paper manufacturer can, on the basis of measured tension profiles and parameters of printing rolls calculated from these, recommend to their customers a running order for the printing rolls or use parameters to classify the runnability risks of the rolls.
  • the method improves runnability in spite of slanted cross-directional profiles when the printing rolls are sorted or classified.
  • the disadvantage is the additional work which can, however, be automated using intelligent data processing, and the information can be transmitted to the printer either as profile data or as running order recommendations.
  • a colour code was put on printing rolls according to the station of the printing roll, i.e. from which part of the mill roll the printing roll came.
  • the printer has been able to put printing rolls in the queue he desires according to whether the printing roll is an edge roll at the drive side, an edge roll at the tending side or a middle roll.
  • the rolls can be classified according to the actual profile data and also marked, for example, with a colour code, wherein the measured tension profiles and parameters calculated from these are classified using different colours.
  • the invention relates to a method for improving the runnability of a printing press.
  • the method uses printing rolls (so-called customer rolls) whose cross- directional tension profile is measured in the paper manufacturing process.
  • Measuring the cross-directional tension profile in the paper manufacturing process is preferably, but not necessarily, done using a method or apparatus described in publication WO 2006/075055 (METSO PAPER, INC.) and/or an iROLL device (METSO PAPER, INC.)
  • the printing rolls used in the printing process are selected by using as one selection criterion the parameter calculated from the cross-directional tension profile of the printing roll measured in the paper manufacturing process.
  • the roll position of the printing roll in the original mill roll is preferably, but not necessarily, used as one selection criterion.
  • At least one printing nip or roller of the printing press is preferably, but not necessarily, adjusted by using the cross-directional tension profile of the printing roll obtained from the paper manufacturing process.
  • the printing rolls are sorted and used in the printing process preferably, but not necessarily, such that the printing rolls used in succession in the printing process have cross-directional tension profiles whose differences are as small as possible.
  • the printing rolls can be selected such that the cross-directional tension profiles of the printing rolls used are similar.
  • the information regarding the cross-directional tension profile of the printing rolls can be received via an information network or the Internet from the paper manufacturer and the information regarding the cross-directional tension profile of the printing rolls is stored preferably, but not necessarily, in a data processing device.
  • the cross-directional tension profile of the printing roll measured by the paper manufacturer On the basis of the cross-directional tension profile of the printing roll measured by the paper manufacturer, different kinds of parameters describing the tension profile of the printing roll can be calculated and the parameter calculated from the cross-directional tension profile of the printing roll can be used as a selection criterion.
  • the calculated parameters can be marked, for example, with a colour code, wherein classification can be made on the basis of the colour codes, hi other words, the printing roll is marked with a colour code corresponding to the calculated parameter and the printing rolls used in the printing process are selected on the basis of the colour codes.
  • the tension profile parameter of the printing roll can be calculated on the basis of the cross-directional tension profile of the printing roll measured by the paper manufacturer and that the parameter calculated from the cross- directional tension profile of the printing roll is used as a selection criterion.
  • the selection criterion can be a "bad” profile. That is, according to the situation, there may be a need to select a so-called “bad roll” the use of which compensates for a fault in the machine/process, problem, machine characteristic/slanting etc.
  • One parameter describing the tension profile of a printing roll can be calculated by calculating the slope of the linear regression of the cross-directional tension profile of the printing roll measured by the paper manufacturer by adapting ' the linear regression to the cross-directional tension profile of the printing roll measured by the paper manufacturer.
  • the parameter describing the tension profile of the printing roll is, in this case, the slope of the linear regression of the tension profile.
  • One parameter describing the tension profile of a printing roll can be calculated by calculating the variation area across the width of the printing roll of the linear regression of the cross-directional tension profile of the printing roll measured by the paper manufacturer by adapting the linear regression to the cross-directional tension profile of the printing roll measured by the paper manufacturer.
  • the parameter describing the tension profile of the printing roll is, in this case, the variation area of the linear regression.
  • One parameter describing the tension profile of a printing roll can be calculated by calculating the standard deviation of the variation of the cross- directional tension profile of the printing roll measured by the paper manufacturer and by estimating the standard deviation of the tension profile variation area.
  • the parameter describing the tension profile of the printing roll is, in this case, the standard deviation of the tension profile variation and the variation area of the tension profile.
  • the cross-directional tension profile of the web in a printing press is preferably, but not necessarily, measured with a force and/or pressure sensor, such as an electromagnetic film sensor, such as an EMFi film sensor, arranged on a cylinder or roller of the printing press which sensor produces an electrical signal describing the cross-directional tension profile of the web.
  • the EMFi film is a foamed, plastic film with a metallic coating and an electrical charge which converts any mechanical movement caused to the film into electrical energy.
  • the cross-directional tension profile of the web measured in the printing press is preferably, but not necessarily, compared to the cross-directional tension profile of the printing roll measured in the paper manufacturing process.
  • the cross- directional tension profile of the web measured in the printing press is preferably, but not necessarily, sent to the paper manufacturer. Between the paper manufacturer and the printing house is preferably, but not necessarily, arranged a two-way connection over an information network.

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

The invention relates to a method for improving the runnability of a printing press in the printing process. In the method, printing rolls are used whose cross-directional tension profile is measured in the paper manufacturing process. In the method, the printing rolls used in the printing process are selected by using as one selection criterion the cross-directional tension profile of the printing roll measured in the paper manufacturing process. Cross- directional tension profiles measured in the paper manufacturing process can be used for sorting the printing rolls used in the printing process and thus to tension profile parameter of the printing roll of a printing press and to prevent problems, such as the breakage of the paper web.

Description

Method for improving the runnability of a printing press in the printing process
Background of the invention
The invention relates to a method for improving the runnability of a printing press in the printing process according to the introduction of claim 1.
To the greatest extent possible, the paper produced by a paper machine, i.e. a mill roll, is made to be of uniform quality lengthwise and crosswise in the machine direction. In practice, however, in particular the printing rolls made from the edge areas of a mill roll have cross-directional variations such that a compromise must be made on the desired uniform quality, for example, in tension, moisture and thickness profiles. Printing rolls (so-called customer rolls) are made from a mill roll by cutting the wide paper web, lengthwise in relation to the length of the paper web of the mill roll, into several paper webs.
By means of the tension profile of the mill roll, runnability of the printing rolls made from the mill roll can be predicted by dividing the tension profile of the mill roll into sub-profiles the width of printing rolls which predict the shape and variation area of the tension profile created in a printing press.
In a paper machine, the objective is a uniform or evenly-changing tension profile but, frequently, the tension profile of, in particular, the edge rolls is clearly slanted. The variation area of the tension profile can be large in comparison to the running tension used. In that case, a larger value must be used for the running tension of the printing press in order that the web can be made tight along its entire length.
In particular, the printing rolls from the edge areas have cross-directional variations such that, in practice, a compromise must be made on the desired uniform quality. This occurs, for example, in tension profiles. Difficulties may arise in runnability, for example, when printing in succession with rolls from opposite edges whose tension profiles are slanted in different directions.
Along with the printing rolls, the printer receives information regarding the basis weight of the paper and the roll position of the change. This information is also useful when used to advantage but the majority of measurement information remains with the paper manufacturer and is never utilized in the printing process. hi some cases, the roll position is used as a sorting criterion but when cross- directional profile information has not been available, sorting could not have been done using other, more accurate criteria. Brief description of the invention
The object of the invention is to solve the above mentioned problems. The object of the invention is achieved by a method according to independent claim 1. The preferred embodiments of the invention are presented in the dependant claims.
The method presented for improving the runnability of a printing press in the printing process is based on the fact that, in the method, printing rolls are used whose cross-directional tension profile is measured in the paper manufacturing process, and that, in the method, the printing rolls used in the printing process are selected by using as one selection criterion the cross-directional tension profile of the printing roll measured in the paper manufacturing process.
Measuring the cross-directional tension profile in the paper manufacturing process is preferably, but not necessarily, done using a method or device described in publication WO 2006/075055 (METSO PAPER, INC.) and/or an iROLL device (METSO PAPER, INC.).
By means of tension profile measurements made by a paper machine, it is possible to predict runnability of printing rolls by dividing the tension profile into sub- profiles the width of printing rolls by means of which it is possible to estimate the shape and variation area of the tension profile and then printing press runnability. The measured tension profiles can be used in sorting printing rolls used in the printing press and thus to improve printing press runnability. From tension profiles, different kinds of parameters can be calculated which describe the variation area of the tension profile. By means of these parameters, runnability criteria can be evaluated, for example, risks of breakage. The runnability of printing roll papers can be predicted in advance by means of tension profiles measured by the paper machine. For many grades of paper, the tension profile is passed on to the printing rolls whose tension profile is seen from the tension profile of the mill roll when the position of the printing roll is known. This information can be transferred for the use of the printer and printing rolls can be sorted, for example, on the basis of tension profiles. From the tension profile, parameters describing the scope of tension variation can be calculated by means of which runnability problems of the printing rolls can be predicted. If needed, those kinds of printing rolls which are likely to cause runnability problems can be removed in advance. By sorting printing rolls to be printed in order according to the same kinds of profiles, runnability can be improved and thus waste reduced in the printing process.
The runnability of a printing press can be improved by utilizing characteristics of the paper measured by the paper machine, such as different kinds of profiles and parameters calculated from these on the basis of which the printing rolls can even be sorted. This kind of transfer of information and data can be automated by arranging a data communications connection between the paper machine and the printing press. Through this same data communications channel, the paper manufacturer could receive feedback from the printing house, for example, regarding runnability problems with the rolls. Above mentioned data transfer requires agreements and long- term research cooperation between the paper manufacturer and the printer. In the area of maintenance, this kind of remote use systems and outsourcing are quite common.
The paper manufacturer has vast and diverse measurement information regarding the paper for each and every mill roll. By using this information more than is currently done in cooperation with the printing house, the printing press runnability can be improved. As cooperation develops, the information can be transferred automatically using data communications connections within an agreed scope.
Problems in runnability may occur, for example, when printing in succession rolls that are from opposite edges of one mill roll of the paper machine whose tension profiles are slanted in different directions. By sorting printing rolls such that the same kinds of profiles are printed in succession, runnability problems can be avoided and savings made on expenses.
A cross-directional profile can be, for example, a tension, thickness or moisture profile or a corresponding profile known from the paper machine.
The paper machine can also be used to "tailor" a desired cross-directional profile providing good runnability according to the printing process and/or type of printing press.
By bringing measurement information to the printing press for the printing press to utilize, the runnability of the press can be further improved - as an example of this type is the moisture of the paper which has influence on many other characteristics of the paper.
To improve the runnability, from the cross-directional tension profiles of the paper machine are calculated parameters for the printing rolls which describe the scope of the variation. The parameters can be used to classify the runnability risks and thus to predict the problems and, if needed, even to reject bad printing rolls. By means of the parameters, printing rolls can be sorted such that the same kinds of tension profiles are printed in succession.
The paper manufacturer can, on the basis of measured tension profiles and parameters of printing rolls calculated from these, recommend to their customers a running order for the printing rolls or use parameters to classify the runnability risks of the rolls. The method improves runnability in spite of slanted cross-directional profiles when the printing rolls are sorted or classified. The disadvantage is the additional work which can, however, be automated using intelligent data processing, and the information can be transmitted to the printer either as profile data or as running order recommendations.
Earlier, a colour code was put on printing rolls according to the station of the printing roll, i.e. from which part of the mill roll the printing roll came. Thus, the printer has been able to put printing rolls in the queue he desires according to whether the printing roll is an edge roll at the drive side, an edge roll at the tending side or a middle roll. Now, the rolls can be classified according to the actual profile data and also marked, for example, with a colour code, wherein the measured tension profiles and parameters calculated from these are classified using different colours.
Detailed description of the invention
The invention relates to a method for improving the runnability of a printing press.
The method uses printing rolls (so-called customer rolls) whose cross- directional tension profile is measured in the paper manufacturing process.
Measuring the cross-directional tension profile in the paper manufacturing process is preferably, but not necessarily, done using a method or apparatus described in publication WO 2006/075055 (METSO PAPER, INC.) and/or an iROLL device (METSO PAPER, INC.)
In the method, from the measured cross-directional tension profile is calculated at least one parameter describing the tension profile.
In the method, the printing rolls used in the printing process are selected by using as one selection criterion the parameter calculated from the cross-directional tension profile of the printing roll measured in the paper manufacturing process.
In the method, the roll position of the printing roll in the original mill roll is preferably, but not necessarily, used as one selection criterion.
In the method, at least one printing nip or roller of the printing press is preferably, but not necessarily, adjusted by using the cross-directional tension profile of the printing roll obtained from the paper manufacturing process.
If several printing rolls are used in the printing process, the printing rolls are sorted and used in the printing process preferably, but not necessarily, such that the printing rolls used in succession in the printing process have cross-directional tension profiles whose differences are as small as possible. Alternatively, in such a printing process, in which several printing rolls are used, the printing rolls can be selected such that the cross-directional tension profiles of the printing rolls used are similar.
In the method, the information regarding the cross-directional tension profile of the printing rolls can be received via an information network or the Internet from the paper manufacturer and the information regarding the cross-directional tension profile of the printing rolls is stored preferably, but not necessarily, in a data processing device.
On the basis of the cross-directional tension profile of the printing roll measured by the paper manufacturer, different kinds of parameters describing the tension profile of the printing roll can be calculated and the parameter calculated from the cross-directional tension profile of the printing roll can be used as a selection criterion. The calculated parameters can be marked, for example, with a colour code, wherein classification can be made on the basis of the colour codes, hi other words, the printing roll is marked with a colour code corresponding to the calculated parameter and the printing rolls used in the printing process are selected on the basis of the colour codes.
In the method, the tension profile parameter of the printing roll can be calculated on the basis of the cross-directional tension profile of the printing roll measured by the paper manufacturer and that the parameter calculated from the cross- directional tension profile of the printing roll is used as a selection criterion. Instead of a "good" profile (similar or slightly dissimilar), the selection criterion can be a "bad" profile. That is, according to the situation, there may be a need to select a so-called "bad roll" the use of which compensates for a fault in the machine/process, problem, machine characteristic/slanting etc.
One parameter describing the tension profile of a printing roll can be calculated by calculating the slope of the linear regression of the cross-directional tension profile of the printing roll measured by the paper manufacturer by adapting' the linear regression to the cross-directional tension profile of the printing roll measured by the paper manufacturer. The parameter describing the tension profile of the printing roll is, in this case, the slope of the linear regression of the tension profile.
One parameter describing the tension profile of a printing roll can be calculated by calculating the variation area across the width of the printing roll of the linear regression of the cross-directional tension profile of the printing roll measured by the paper manufacturer by adapting the linear regression to the cross-directional tension profile of the printing roll measured by the paper manufacturer. The parameter describing the tension profile of the printing roll is, in this case, the variation area of the linear regression. One parameter describing the tension profile of a printing roll can be calculated by calculating the standard deviation of the variation of the cross- directional tension profile of the printing roll measured by the paper manufacturer and by estimating the standard deviation of the tension profile variation area. The parameter describing the tension profile of the printing roll is, in this case, the standard deviation of the tension profile variation and the variation area of the tension profile.
In the method, the cross-directional tension profile of the web in a printing press is preferably, but not necessarily, measured with a force and/or pressure sensor, such as an electromagnetic film sensor, such as an EMFi film sensor, arranged on a cylinder or roller of the printing press which sensor produces an electrical signal describing the cross-directional tension profile of the web. The EMFi film is a foamed, plastic film with a metallic coating and an electrical charge which converts any mechanical movement caused to the film into electrical energy. In this case, the cross-directional tension profile of the web measured in the printing press is preferably, but not necessarily, compared to the cross-directional tension profile of the printing roll measured in the paper manufacturing process. In this case, the cross- directional tension profile of the web measured in the printing press is preferably, but not necessarily, sent to the paper manufacturer. Between the paper manufacturer and the printing house is preferably, but not necessarily, arranged a two-way connection over an information network.
It is obvious to a person skilled in the art that, as technology develops, the basic idea of the invention can be implemented in many different ways. The invention and its embodiments are not then limited only to the examples presented in the above rather many variations are possible within the scope of the claims.

Claims

Claims
1. A method for improving the runnability of a printing press in the printing process, characterized in that, in the method, printing rolls are used whose cross-directional tension profile is measured in the paper manufacturing process, that from the measured cross-directional tension profile is calculated at least one parameter describing the tension profile, and that the printing rolls used in the printing process are selected by using as one selection criterion the parameter calculated from the cross-directional tension profile of the printing roll measured in the paper manufacturing process.
2. A method according to claim 1, characterized in that at least one printing nip or roller of the printing press is adjusted by using the cross-directional tension profile of the printing roll obtained from the paper manufacturing process.
3. A method according to claim 1 or 2, characterized in that, in the printing process, several printing rolls are used, and that the printing rolls are sorted and used in the printing process such that the difference in the cross-directional tension profile of the printing rolls used in succession in the printing process is as small as possible, and/or that the calculated parameter is as similar as possible.
4. A method according to any one of claims 1-3, characterized in that, in the printing process, several printing rolls are used which are selected such that the cross- directional tension profile of the printing rolls used in the printing process is selected based on characteristics known from experience with the printing press or otherwise known for improving the runnability of a printing press.
5. A method according to any one of claims 1-4, characterized in that, in the printing process, several printing rolls are used which are selected such that the cross- directional tension profile of the printing rolls used in the printing process is similar and/or the calculated parameter is as similar as possible.
6. A method according to any one of claims 1-5, characterized in that the information regarding the cross-directional tension profile of the printing rolls is received via an information network from the paper manufacturer and the information regarding the cross-directional tension profile of the printing rolls is stored in a data processing device.
7. A method according to any one of claims 1-6, characterized in that the tension profile parameter of the printing roll is calculated by calculating the slope of the linear regression of the cross-directional tension profile of the printing roll measured by the paper manufacturer by adapting the linear regression to the cross-directional tension profile of the printing roll measured by the paper manufacturer and that the parameter calculated from the cross-directional tension profile of the printing roll is used as a selection criterion.
8. A method according to any one of claims 1-7, characterized in that the tension profile parameter of the printing roll is calculated by calculating the variation area across the width of the printing roll of the linear regression of the cross-directional tension profile of the printing roll measured by the paper manufacturer by adapting the linear regression to the cross-directional tension profile of the printing roll measured by the paper manufacturer and that the parameter calculated from the cross- directional tension profile of the printing roll is used as a selection criterion.
9. A method according to any one of claims 1-8, characterized in that the tension profile parameter of the printing roll is calculated by calculating the standard deviation of the variation of the cross-directional tension profile of the printing roll measured by the paper manufacturer and estimating the variation area of the profile using the standard deviation and that the parameter calculated from the cross- directional tension profile of the printing roll is used as a selection criterion.
10. A method according to any one of claims 1-9, characterized in that, in the printing press, the cross-directional tension profile of the web is measured with a force and/or pressure sensor, such as an electromagnetic film sensor, such as an EMFi film sensor, arranged on a cylinder or roller of the printing press which sensor produces an electrical signal describing the cross-directional tension profile of the web.
11. A method according to claim 10, characterized in that the cross-directional tension profile of the web measured in the printing press is compared to the cross- directional tension profile of the printing roll measured in the paper manufacturing process.
12. A method according to claim 10 or 11, characterized in that the cross- directional tension profile of the web measured in the printing press is sent to the paper manufacturer.
13. A method according to any one of claims 1-12, characterized in that a two- way connection over an information network is arranged between the paper manufacturer and the printing house.
14. A method according to any one of claims 1-13, characterized in that, additionally, the roll position of the printing roll in the original mill roll is used as one selection criterion.
15. A method according to any one of claims 7-9, characterized in that the printing roll is marked with a colour code corresponding to the calculated parameter and printing rolls used in the printing process are selected on the basis of the colour codes.
PCT/FI2009/050105 2008-02-12 2009-02-11 Method for improving the runnability of a printing press in the printing process WO2009101253A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20080100A FI20080100A0 (en) 2008-02-12 2008-02-12 A method for improving the runnability of a printing press in the printing process
FI20080100 2008-02-12

Publications (1)

Publication Number Publication Date
WO2009101253A1 true WO2009101253A1 (en) 2009-08-20

Family

ID=39148880

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2009/050105 WO2009101253A1 (en) 2008-02-12 2009-02-11 Method for improving the runnability of a printing press in the printing process

Country Status (2)

Country Link
FI (1) FI20080100A0 (en)
WO (1) WO2009101253A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5649448A (en) * 1994-05-16 1997-07-22 Valmet Corporation System for overall control of different transverse profiles in a paper web manufactured in a board of paper machine and/or treated in a finishing machine
US6629569B1 (en) * 2002-10-25 2003-10-07 Milton D. Adams Pop up roof sprinkler system
WO2006075055A1 (en) * 2005-01-17 2006-07-20 Metso Paper, Inc. Web tension profile measuring method and a roll for applying the same
US20060254367A1 (en) * 2005-05-12 2006-11-16 Abb Ltd. Measurement system for improved paper roll runnability

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5649448A (en) * 1994-05-16 1997-07-22 Valmet Corporation System for overall control of different transverse profiles in a paper web manufactured in a board of paper machine and/or treated in a finishing machine
US6629569B1 (en) * 2002-10-25 2003-10-07 Milton D. Adams Pop up roof sprinkler system
WO2006075055A1 (en) * 2005-01-17 2006-07-20 Metso Paper, Inc. Web tension profile measuring method and a roll for applying the same
US20060254367A1 (en) * 2005-05-12 2006-11-16 Abb Ltd. Measurement system for improved paper roll runnability

Also Published As

Publication number Publication date
FI20080100A0 (en) 2008-02-12

Similar Documents

Publication Publication Date Title
CA2601338C (en) Actuator system for use in control of a sheet or web forming process
EP1888839B1 (en) Measurement system for improved paper roll winding
EP0708859B1 (en) Method for the control of the transverse profiles of a web
AU2014271137B2 (en) Scanning sensor arrangement for paper machines or other systems
EP2572038B1 (en) Apparatus and method for controlling curling potential of paper, paperboard, or other product during manufacture
US20200385227A1 (en) Adaptive sheet caliper control system and apparatus and methods
CA2935196C (en) Integration of clothing performance in planning optimization of paper and board machine to reduce manufacturing costs
WO2009101253A1 (en) Method for improving the runnability of a printing press in the printing process
EP2502739A1 (en) System for controlling the glued status of a single-face layer of a corrugated cardboard sheet in the production line
JP2015066520A (en) Coating equipment and coating method
EP3198236B1 (en) System and method for measuring one or more characteristics of a web of material in a web manufacturing or processing system
CA2598921A1 (en) Method of and apparatus for manufacturing a metal strip
CN108820990B (en) Method and system applied to paper tension adjustment
AU2001240725A1 (en) System for keeping calender rolls of a paper machine clean
Ylimys Quality optimisation of the overall paperboard manufacturing process for a rotogravure printing
CN201990901U (en) Device for coating moving paper web sheets or paperboard web sheets in coating machine
Boyle Picking Up the Pace
Parent et al. Evaluating the impact of non-uniform paper properties on web lateral instability on printing presses
Boyle Converter maintains its edge with effective line upgrades
Bureau Building a better roll
KR20160059698A (en) Gravure printing apparatus for a oparque and both-sides-printed item
DE10252751A1 (en) Procedure to fix toner onto paper substrate without making contact with paper using detected humidity of paper to control microwave heat application

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09710931

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09710931

Country of ref document: EP

Kind code of ref document: A1