EP1541762A1 - Procédé et dispositif pour réguler au moins une propriété liée au processus pendant la fabrication d'une bande fibreuse - Google Patents

Procédé et dispositif pour réguler au moins une propriété liée au processus pendant la fabrication d'une bande fibreuse Download PDF

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Publication number
EP1541762A1
EP1541762A1 EP04106482A EP04106482A EP1541762A1 EP 1541762 A1 EP1541762 A1 EP 1541762A1 EP 04106482 A EP04106482 A EP 04106482A EP 04106482 A EP04106482 A EP 04106482A EP 1541762 A1 EP1541762 A1 EP 1541762A1
Authority
EP
European Patent Office
Prior art keywords
web
measuring
fibrous web
measuring roller
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
Application number
EP04106482A
Other languages
German (de)
English (en)
Other versions
EP1541762B1 (fr
Inventor
Ewald Wetschenbacher
Jörg Dr. Maurer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
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 Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1541762A1 publication Critical patent/EP1541762A1/fr
Application granted granted Critical
Publication of EP1541762B1 publication Critical patent/EP1541762B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D21G9/0027—Paper-making control systems controlling the forming section
    • 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
    • B65H18/08—Web-winding mechanisms
    • B65H18/26—Mechanisms for controlling contact pressure on winding-web package, e.g. for regulating the quantity of air between web layers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D21G9/0036—Paper-making control systems controlling the press or drying section
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D21G9/0045—Paper-making control systems controlling the calendering or finishing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/13—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/135—Surface texture; e.g. roughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/12—Density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/31—Tensile forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/31—Tensile forces
    • B65H2515/314—Tension profile, i.e. distribution of tension, e.g. across the material feeding direction or along diameter of web roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/34—Pressure, e.g. fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/81—Rigidity; Stiffness; Elasticity

Definitions

  • the invention relates to a method for controlling at least one process-relevant Property during the production of a fibrous web, in particular a paper or board web, with a production machine, in particular a at least one headbox, a wire section, a press section, a Drying section and a paper or board machine having a winding machine.
  • the object is according to the invention in the mentioned method by determination at least one local change and / or at least one local difference at least one first characteristic transverse profile of the fibrous web by measuring at least one mechanical parameter of the fibrous web at least two points distributed over the width of the fibrous web and points by influencing the at least one first characteristic transverse profile on the at least one position depending on the local change or the local one Difference by changing at least a second property cross profile the fibrous web dissolved at least one further location, wherein the at least a first property profile is the line force or an equivalent Size, in particular the pressure, and / or the web tension or an equivalent Size is.
  • the at least one second Property can be the at least one first property, so the line force or an equivalent size, in particular the pressure, and / or the web tension or an equivalent size, and thus the process-relevant property preferably be controlled as desired to a desired value.
  • the values obtained by the method according to the invention for the line force and / or web train thus serve as control variables for the process of production the fibrous web to ensure the highest possible quality of the finished fibrous web to obtain the finished fibrous web along its width as possible should have uniform thickness and as uniform as possible modulus of elasticity.
  • the method according to the invention provides a further possibility for monitoring ready for the production process of the fibrous web.
  • the inventive method also has the advantage that it has a requires considerably less mechanical effort than that of the prior Technique known methods. Besides, it can be in addition to the already known ones Methods are used. This will increase the accuracy of the Monitoring of the production process of the fibrous web increased.
  • the process-relevant property during the production of the fibrous web comprises in a preferred embodiment at least the winding hardness (radial stress), the tension in the individual layers of the winding roll and / or the Smoothness grade of a smoothing process, if this process step in the manufacturing process the fibrous web is provided.
  • the at least one second property transverse profile of the fibrous web comprises in Advantageous embodiment, at least the thickness and / or at least one modulus of elasticity, because of these properties, among other things, a good ability to wind the fibrous web and to a good uniformity of the mechanical properties contribute to the fibrous web.
  • the property "thickness” preferably comprises the basis weight and / or during the production of locally available thickness, wherein the thickness according to the invention in the area of the headbox with preferential dilution water control, the press section and / or the calender is changed.
  • modulus of elasticity preferably comprises the modulus of elasticity in the direction of travel the fibrous web, in the transverse direction of the fibrous web and / or in the z-direction the fibrous web, wherein the at least one modulus of elasticity at least from the Fiber orientation, the web composition, the fiber type, the formation, the Transverse shrinkage, the moisture and / or the uniformity is determined.
  • the object of the invention is in a device in the first embodiment solved by providing a winding machine with a carrier drum and a on a spool resulting winding roll, which together has a winding nip form, and that the carrier drum as a measuring roller for measuring the line force is formed along the web width.
  • the object of the invention is in a device in a second embodiment achieved by using a calender with a measuring roller for measuring the Train is.
  • the measuring roller one or more calender rolls before be arranged guide roller.
  • One arranged after several calender rolls Guide roller can also control the control of the calender be used.
  • the object of the invention is in a device in a third embodiment solved by having a press section with a measuring roller for measurement the train is.
  • the object of the invention is in a device in the fourth embodiment solved by having a Langnippresse, in particular a shoe press, with a measuring roller for measuring the web tension is.
  • the measuring roller can behind be arranged the press nip.
  • the object of the invention is in a device in the fifth embodiment in that it has a drying section with a measuring roller for measuring the Train is.
  • the measuring roller can be arranged at the end of the dryer section be.
  • the object of the invention is in a device in the sixth embodiment solved by providing a coating unit with a measuring roller for measurement the train is.
  • the object of the invention is in a device in the seventh embodiment solved by providing a measuring roller arranged between two guide rollers to measure the train. This is also a measurement of Web tension on a free, non-supported area of the fibrous web possible.
  • the measuring roller can of course also other Have measuring devices as piezo elements.
  • the use of piezo elements has purely exemplary character.
  • the measuring roller is a multi-part measuring roller, at least one of the individual rollers is provided with at least one load cell.
  • the measuring roller is at the same time a guide roller, it can have two functions at the same time.
  • the object of the invention is in a device in the eighth embodiment in that it has a device provided with an air cushion for Forwarding of the fibrous web is and that the means for forwarding the Fiber web along the web width with measuring devices for measuring a Dynamic pressure of the air cushion is provided.
  • This non - contact alternative to the Forwarding of the fibrous web made possible by the measurement of the back pressure along the web width an elegant way to measure the train to then the web thickness or the modulus of elasticity as close as possible to the measuring location Body to correct.
  • the method according to the invention can preferably be in the range of at least one Winding machine, a calender, a press section, a drying section, one Coating unit and / or a free train of a manufacturing machine, in particular a paper or board machine.
  • FIG. 1 shows a schematic side view of a winding machine 10 a carrying drum 11 and a winding roller 12.
  • the carrier drum 11 is in the running direction of the fibrous web. 1 a preferably provided with piezoelectric elements measuring roller 13 for measurement of the train z (arrow) upstream. If a deviation of the train z (Arrow) of a value range of permissible web tension values from an evaluation unit 14 is determined so he changed in a known manner accordingly.
  • the web tension z (arrow) can in a further embodiment also in the fibrous web 1 looped portion of the carrier drum 11 are measured.
  • the measurement must in the direction of the fibrous web 1 before between the carrier drum 11 and winding roll 12 formed Nip N done to any influences To exclude the line force.
  • FIG. 2 shows a further schematic side view of a winding machine 20 with a measuring device 21 for measuring the line force F (arrow).
  • the carrying drum 22 is equipped with piezoelectric elements, so that in the region of the winding nip 23 the line force F (arrow) measured along the width of the fibrous web 1 can be. If along the web width too strong differences in line force F (arrow) can be found in a corresponding place of the Production of fibrous web 1 Differences in thickness and modulus of elasticity balanced become.
  • FIG. 3 shows a schematic side view of a calender 30, which with a measuring roller 31 is equipped.
  • the measuring roller 31 is in the running direction of the fibrous web 1 arranged in front of the calender rolls 32. However, the measuring roller can be arranged after the calender rolls, for example, the To be able to measure thickness transverse profile.
  • the measuring roller 31 of the train z (Arrow) along a width of a fibrous web 1 can be determined. From the train train differences the fibrous web 1 can then draw conclusions about the course the thickness and the modulus of elasticity of the fibrous web 1 drawn along the web width become.
  • the measured web tension z (arrow) is in an evaluation device 33 compared with limit values of a value range of permissible web tension values.
  • the measured web tension z (arrow) of the limits of the value range permissible rail train values may, by changing at least a calender gap (nips) between the calender rolls 32 differences be balanced in thickness. Because the site and the location at the the differences in thickness are compensated, are close to each other, takes place Correction of the measured deviations almost at the same time. If the measuring roller 31 is equipped with piezo elements, is a very precise and fast Measurement of the web tension z (arrow) along the web width possible. Thus, the Measuring roller 31, the web tension z (arrow) of the fibrous web 1 and to a Forward evaluation unit 33.
  • FIG. 4 shows a schematic side view of a press section 40, which with a measuring roller 41 is provided.
  • the press section can in further execution also a Langnippresse, in particular a shoe press, have.
  • the measuring roller 41 is disposed behind the felted press rolls 42 and 43. Conveniently, is the measuring roller 41, optionally also as a measuring roller 41 ', also provided with piezo elements.
  • the measuring roller 41 (41 ') can pull the web Measure z (arrow) of the material web 13, and pass it on to an evaluation unit 44.
  • the web tension values measured along the web width z (Arrow) can then be changed by a press nip formed by the press rollers 42 and 43 be to compensate for the thickness of the fibrous web 1.
  • the a measuring roller 51 has.
  • the measuring roller 51 is also with Equipped with piezo elements.
  • the measured by the measuring roller 51 web train z (Arrow) of the fibrous web 1 is passed on to an evaluation unit 52. If the determined by the measuring roller 51 web train z (arrow) of the limits deviates from the value range of permissible web tension values, one between the Rolls 53 and 54 formed nip be changed according to the thickness to compensate the fibrous web 1,
  • FIG. 6 shows a schematic side view of a drying section 60 with a Measuring roller 61.
  • the measuring roller 61 measures the web tension z (arrow) of the fibrous web 1 and outputs the determined value to an evaluation unit 62 on.
  • the fibrous web 1 at the locations the material web where deviations in the web tension z (arrow) were detected, partially moisten stronger or less strongly. That way you can Differences in the modulus of elasticity can be compensated.
  • FIG. 7 shows a schematic side view of a coating unit 70 with a measuring roller 71, which measures the web tension z (arrow) of the fibrous web 1 and the Passes measured value to an evaluation unit 72. If the measured web tension z (Arrow) is outside the range of permissible web tension values, can between the rollers 73 and 74 lying nip be changed accordingly, to compensate for differences in thickness in the fibrous web 1.
  • FIG. 8 shows a schematic side view of a guide roller 80 and a Guide roller 81, between which a measuring roller 82 is arranged.
  • the measuring roller 82 is here between a free, non-supported area of the fibrous web 1. Since the measuring roller 82 is advantageously equipped with piezo elements is, even with this arrangement allows a reliable measurement of the train z (arrow) whose measured values are passed on to an evaluation unit 83 be in order to get as close as possible to the place of measurement Correction of the web thickness or the modulus of elasticity of the material web.
  • Figures 9a and 9b show views of a multi-part measuring roll 90, in the at least one of the individual rollers 91 with at least one load cell 92 is provided.
  • the at least one load cell 92 is indicated by the arrows 93 (see Figure 9b) shown web train z (arrow) with a compressive force, the is shown by the arrow 94, applied.
  • the train delivers z (arrow) a corresponding pressure force signal to a not shown here Evaluation unit is passed, if necessary to a corresponding Place the production of the fibrous web a change in web thickness or of the E-module.
  • Figures 10a and 10b each show a front view of a device 100 for contactless forwarding of the fibrous web 1.
  • a dynamic pressure p arrow
  • By means of at least one measuring device not shown here for Measurement of the dynamic pressure p (arrow) along the web width can thus be a statement be taken over the height of the web train z (arrow) in the fibrous web 1.
  • FIG. 11 shows a schematic side view of a production machine 110.
  • the manufacturing machine has at least one headbox 111, a wire section 112, a press section 113, a dryer section 114 and a winding machine 115 and serves to produce a fibrous web 1, in particular a paper or board web.
  • the manufacturing machine shown in Figure 11 110 additionally has a coating unit 116, a nozzle moistener 117 and a calender 118 on.
  • This manufacturing machine 110 is particularly suitable for implementation and Application of the method according to the invention for controlling at least a process-relevant property during the production of a fibrous web 1, wherein the process-relevant property during the production of the fibrous web 1 at least the winding hardness (radial stress), the tensile stress in the individual layers of the winding roll 12 and / or the smoothness-quality of a smoothing process includes.
  • the thickness encompasses the weight per unit area and / or during production locally existing thickness and is in the area of the headbox 111 with vorzugêtr Dilution water control, the press section 113 and / or the Kalander changed 118.
  • the at least one modulus of elasticity comprises the modulus of elasticity in the direction of the fibrous web 1, in the transverse direction of the fibrous web 1 and / or in the z-direction of the fibrous web 1 and is at least determined by the fiber orientation, the web composition, the type of fiber, the formation, the transverse shrinkage, the humidity and / or uniformity.
  • the parameters determining the modulus of elasticity are preferably those already described Areas (actuators) of the manufacturing machine 110 changed: in the area of the stock preparation, not shown, in the area of the headbox 111, in the area of the wire section 112, in the area of the press section 113, in the area the drying section 116, in the area of the nozzle moisturizer 117 and / or in the area of the calender 118.
  • the invention provides a method of initially created type, which provides an additional way to regulate at least one process-relevant property of the manufacturing process the fibrous web provides a high quality finished fibrous web to reach and ensure.

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  • Paper (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP04106482A 2003-12-12 2004-12-10 Procédé et dispositif pour réguler au moins une propriété liée au processus pendant la fabrication d'une bande fibreuse Not-in-force EP1541762B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10358216A DE10358216A1 (de) 2003-12-12 2003-12-12 Verfahren und Vorrichtung zur Regelung von mindestens einer prozessrelevanten Eigenschaft während der Herstellung einer Faserstoffbahn
DE10358216 2003-12-12

Publications (2)

Publication Number Publication Date
EP1541762A1 true EP1541762A1 (fr) 2005-06-15
EP1541762B1 EP1541762B1 (fr) 2010-03-03

Family

ID=34485346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04106482A Not-in-force EP1541762B1 (fr) 2003-12-12 2004-12-10 Procédé et dispositif pour réguler au moins une propriété liée au processus pendant la fabrication d'une bande fibreuse

Country Status (3)

Country Link
EP (1) EP1541762B1 (fr)
AT (1) ATE459751T1 (fr)
DE (2) DE10358216A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006003262A1 (fr) * 2004-07-01 2006-01-12 Metso Paper, Inc. Procede et systeme d'enroulement et appareil de mesure
WO2009043612A1 (fr) * 2007-09-28 2009-04-09 Voith Patent Gmbh Procédé et dispositif pour déterminer au moins un paramètre lors du passage d'une bande de matière à travers une fente formée entre deux surfaces capables de tourner et utilisation
AT504258B1 (de) * 2006-09-29 2012-01-15 Metso Paper Inc Verfahren zum herstellen und wickeln einer faserbahn mit einem thermo- und/oder druckempfindlichen strich
CN114481674A (zh) * 2022-02-23 2022-05-13 张凤君 一种代塑纸的生产工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995031602A1 (fr) 1994-05-16 1995-11-23 Valmet Corporation Systeme permettant la regulation generale des differents profils transversaux d'une bande de papier produite au moyen d'une machine servant a produire une bande de materiau, telle qu'une machine a carton ou a papier et/ou une machine de finition
WO1998054408A1 (fr) 1997-05-30 1998-12-03 Valmet Corporation Procede et materiel destine a une machine de papier/carton pour la regulation de la difference de tirage
DE19920133A1 (de) * 1999-05-03 2000-11-09 Voith Sulzer Papiertech Patent Verfahren und Vorrichtung zur Messung einer Nipkraft
WO2001000924A1 (fr) 1999-06-24 2001-01-04 Metso Paper Automation Oy Procede et appareil de regulation d'une feuille de papier mobile
WO2002029156A1 (fr) 2000-09-29 2002-04-11 Metso Paper, Inc. Procede permettant de minimiser dans une feuille de papier continue la variation de tension induite par le sechage de ladite feuille dans une machine a papier
WO2003054497A2 (fr) 2001-12-20 2003-07-03 Kimberly-Clark Worldwide, Inc. Appareil et procede permettant de mesurer la tension dans un voile de fibres mobile, de sorte a controler les proprietes dudit voile

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FI75200B (fi) * 1986-07-04 1988-01-29 Valmet Oy Foerfarande vid pappersframstaellningsprocess foer foerbaettring av egenskaper hos papperet, saerskilt dess retention.
DE4019593C2 (de) * 1990-06-20 1994-01-20 Voith Gmbh J M Stoffauflauf für Papiermaschinen
DE4239845C2 (de) * 1992-11-05 1998-12-03 Voith Gmbh J M Verfahren zur Messung der Auswirkung von Verstellungen am Stoffauflauf und zur Korrektur des Flächengewichts- und Faserorientierungs-Querprofils
DE19634997C2 (de) * 1996-08-30 1999-08-05 Voith Sulzer Papiermasch Gmbh Regeleinrichtung mit einer Sensoren-Mehrzahl
DE19906062A1 (de) * 1999-02-12 2000-08-17 Voith Sulzer Papiertech Patent Verfahren und Vorrichtung zur Herstellung einer Materialbahn

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995031602A1 (fr) 1994-05-16 1995-11-23 Valmet Corporation Systeme permettant la regulation generale des differents profils transversaux d'une bande de papier produite au moyen d'une machine servant a produire une bande de materiau, telle qu'une machine a carton ou a papier et/ou une machine de finition
WO1998054408A1 (fr) 1997-05-30 1998-12-03 Valmet Corporation Procede et materiel destine a une machine de papier/carton pour la regulation de la difference de tirage
DE19920133A1 (de) * 1999-05-03 2000-11-09 Voith Sulzer Papiertech Patent Verfahren und Vorrichtung zur Messung einer Nipkraft
WO2001000924A1 (fr) 1999-06-24 2001-01-04 Metso Paper Automation Oy Procede et appareil de regulation d'une feuille de papier mobile
WO2002029156A1 (fr) 2000-09-29 2002-04-11 Metso Paper, Inc. Procede permettant de minimiser dans une feuille de papier continue la variation de tension induite par le sechage de ladite feuille dans une machine a papier
WO2003054497A2 (fr) 2001-12-20 2003-07-03 Kimberly-Clark Worldwide, Inc. Appareil et procede permettant de mesurer la tension dans un voile de fibres mobile, de sorte a controler les proprietes dudit voile

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006003262A1 (fr) * 2004-07-01 2006-01-12 Metso Paper, Inc. Procede et systeme d'enroulement et appareil de mesure
US7799171B2 (en) 2004-07-01 2010-09-21 Metso Paper, Inc. Reeling method and system as well as an measuring apparatus
AT504258B1 (de) * 2006-09-29 2012-01-15 Metso Paper Inc Verfahren zum herstellen und wickeln einer faserbahn mit einem thermo- und/oder druckempfindlichen strich
WO2009043612A1 (fr) * 2007-09-28 2009-04-09 Voith Patent Gmbh Procédé et dispositif pour déterminer au moins un paramètre lors du passage d'une bande de matière à travers une fente formée entre deux surfaces capables de tourner et utilisation
CN114481674A (zh) * 2022-02-23 2022-05-13 张凤君 一种代塑纸的生产工艺

Also Published As

Publication number Publication date
EP1541762B1 (fr) 2010-03-03
DE502004010845D1 (de) 2010-04-15
ATE459751T1 (de) 2010-03-15
DE10358216A1 (de) 2005-07-21

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