WO2006061456A1 - Procédé de fabrication de nervurage ou de revêtement d’essai - Google Patents

Procédé de fabrication de nervurage ou de revêtement d’essai Download PDF

Info

Publication number
WO2006061456A1
WO2006061456A1 PCT/FI2005/050434 FI2005050434W WO2006061456A1 WO 2006061456 A1 WO2006061456 A1 WO 2006061456A1 FI 2005050434 W FI2005050434 W FI 2005050434W WO 2006061456 A1 WO2006061456 A1 WO 2006061456A1
Authority
WO
WIPO (PCT)
Prior art keywords
roll
belt
set forth
web
counter
Prior art date
Application number
PCT/FI2005/050434
Other languages
English (en)
Inventor
Henri Vaittinen
Tommi Liimatainen
Original Assignee
Metso Paper, Inc.
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 Metso Paper, Inc. filed Critical Metso Paper, Inc.
Priority to DE112005003115T priority Critical patent/DE112005003115T5/de
Publication of WO2006061456A1 publication Critical patent/WO2006061456A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/12—Making corrugated paper or board
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus

Definitions

  • the present invention relates to a method for the manufacture of fluting or test liner, as well as a product manufactured by the method.
  • Fluting is a packaging board which constitutes a fluted layer for corrugated board.
  • Test liner is a kraft-faced liner made of recycled paper, which is used e.g. as a top liner for corrugated board.
  • These packaging boards are traditionally manufactured by surface sizing, without calendering.
  • One problem in using recycled fibers is the loss of strength in comparison with the use of virgin fibers.
  • a method of the invention comprises treating a fibrous web in at least one process step with a metal belt calender, comprising a metal belt adapted to circle around at least one guide element, outside said belt being provided at least one counter-element establishing a contact surface with the belt, such that the belt and the counter- element establish therebetween a web treatment zone of adjustable length, the web to be treated being passed therethrough, that the method comprises setting a web dwell time in the treatment zone at about 5-200 ms, that the metal belt and/or the counter-element has its temperature set at about 20-400 0 C, and that a contact pressure applied to the web within the treatment zone is regulated over the range of about 0.01 MPa to about 200 MPa.
  • contact pressure refers to a sum of pressure effects applied to a web in the treatment zone between a belt and a counter-element, resulting from belt tension and/or a compression load exerted by possible press elements inside the belt. Setting the contact pressure for a given pressure value or range of pressure values is effected by selecting a suitable belt material, allowing the use of a desired tension, and, if necessary, suitable press elements capable of increasing pressure with respect to a pressure achieved by a belt alone.
  • the regulating range can be e.g. from about 5 MPa to about 70 MPa, preferably from about 7 MPa to about 50 MPa or e.g. from about 70 MPa to about 200 MPa.
  • the inventive method which makes use of metal belt calendering for enhancing the strength of fluting or test liner, also enables the manufacturing of these board grades even without surface sizing, which has been traditionally used for increased strength.
  • CMT test expresses the strength of fluting.
  • a sample is corrugated between heated corrugating rolls, whereafter the sample is secured and held together with a tape for keeping the flutes properly spaced from each other. This is to imitate single-sided corrugated board. Breaking load is applied perpendicularly to the plane of paper and the breaking force (N) is measured. CMT value is the maximum force the sample can withstand before it breaks.
  • SCT is a compression strength property measured both in machine direction (MD) and in cross-direction (CD).
  • MD machine direction
  • CD cross-direction
  • Hg. 1 shows in a schematic side view one metal belt calender suitable for implementing a method of the invention
  • Hg. 2 shows test results for the effects of an additional load on strength at various thermo roll temperatures.
  • Hg. 1 shows one metal belt calender suitable for implementing a method of the invention, comprising a metal-fabricated calendering belt 2 circling around guide rolls 3, at least some of said guide rolls being displaceable for adjusting the belt 2 for a desired tension.
  • the calendering belt 2 travels around a roll 5 disposed outside the belt loop for establishing a calendering zone between the belt 2 and the roll 5.
  • a material web W to be calendered proceeds through the calendering zone, being exposed to a desired pressure impulse and thermal effect as a function of time.
  • a dash-dot line 9 is used to represent the shape of a pressure impulse when the calendering belt loop 2 has disposed thereinside a nip roll 4, which functions as a press element and presses the belt against the roll 5, thus establishing a higher pressure treatment area within the calendering zone.
  • a dash-dot line 8 is used to represent the shape of a pressure impulse when the contact pressure acting within the calendering zone is only established by a tension of the belt 2, the roll 4 being disengaged from a pressing contact with the belt 2 (or with no roll 4 at all fitted inside the belt loop 2).
  • the roll 5, as well as the roll 4, may or may not be a deflection-compensated roll and it is selected from the group consisting of: a flexible surface roll, such a polymer-coated roll, a rubber-coated roll or an elastomer surface roll, a shoe roll, a thermo roll, a metal roll, a fibrous roll and a composite roll.
  • the roll 4 can be replaced as a press element with some other profilable or fixed-profile press element, which moreover may consist of several segments successive in cross-machine direction.
  • the press element 4 designed as a roll may likewise consist of several segments successive in cross-machine direction.
  • the press element 4 may have its surface designed as continuous or discontinuous.
  • the press element 4 can be designed displaceable for modifying the treatment zone length and/or belt tension.
  • the metal belt may also be coated.
  • the nip roll comprises a shoe roll.
  • Reference numeral 6 represents heating elements, such as for example an induction heater, an infrared radiator, a gas burner or a capacitive heater.
  • Preliminary test runs were conducted according to the invention in a metal belt calender intended for trial operation by using surface-sized fluting with a grammage of 110 g/m 2 , which was treated in the metal belt calender at various thermo roll temperatures and at various loads applied by an additional stress roll placed inside the belt loop.
  • the tests were conducted by using three rolls of unequal strengths, the respective strength values thereof being 1,75 SCT (CD) (P2), 1,805 SCT (CD) (P3) and 1,83 SCT (CD) (P4).
  • the test runs revealed that metal belt calendering provided a distinct increase in strength with respect to the initial strength of a base web.
  • the strength of a base web increased from 1,83 SCT (CD) to 1,975 SCT (CD) at a thermo roll temperature of 17O 0 C and at an additional load of 50 kN/m (fig. 2).
  • Even a small additional load of 10 kN/m enabled achieving the strength of 1,895 SCT (CD), i.e. a gain of 3,5%.
  • the belt temperature had been set at 7O 0 C in the tests.
  • inventive method is capable of providing a considerable gain in strength, and hence saving in material, with respect to traditional surface-sized fluting, the same applying also to test liner.
  • inventive method is also applicable to the manufacturing of fluting or test liner without surface sizing.

Landscapes

  • Paper (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Abstract

L’invention concerne un procédé de fabrication de nervurage ou de revêtement d’essai. Le procédé consiste à traiter une toile fibreuse dans au moins une phase de processus avec une calandre de courroie de métal, comprenant une courroie de métal (2) adaptée pour entourer au moins un élément de guidage (3), au moins un élément opposé (5) placé à l’extérieur de ladite courroie établissant une surface de contact avec la courroie, de telle sorte que la courroie (2) et l’élément opposé (5) établissent entre eux une zone de traitement de toile de longueur réglable, en faisant passer la toile à traiter à travers ladite zone. Le procédé consiste à définir un temps de palier de la toile dans la zone de traitement d’environ 5 à 200 ms, à régler la courroie de métal et/ou l’élément opposé à une température d’environ 20 à 400°C et à réguler une pression de contact appliquée à la toile au sein de la zone de traitement dans la fourchette d’environ 0,01 MPa à environ 200 MPa.
PCT/FI2005/050434 2004-12-10 2005-11-24 Procédé de fabrication de nervurage ou de revêtement d’essai WO2006061456A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112005003115T DE112005003115T5 (de) 2004-12-10 2005-11-24 Verfahren für die Herstellung von Wellenstoff oder Testliner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20045471 2004-12-10
FI20045471A FI120881B (fi) 2004-12-10 2004-12-10 Menetelmä aallotuskartongin tai testlainerin valmistamiseksi

Publications (1)

Publication Number Publication Date
WO2006061456A1 true WO2006061456A1 (fr) 2006-06-15

Family

ID=33548073

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2005/050434 WO2006061456A1 (fr) 2004-12-10 2005-11-24 Procédé de fabrication de nervurage ou de revêtement d’essai

Country Status (4)

Country Link
CN (1) CN101068978A (fr)
DE (1) DE112005003115T5 (fr)
FI (1) FI120881B (fr)
WO (1) WO2006061456A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102154909A (zh) * 2010-12-31 2011-08-17 东莞理文造纸厂有限公司 添加低成本填料的箱板纸制备工艺
CN102154918A (zh) * 2010-12-31 2011-08-17 东莞理文造纸厂有限公司 改善纸面匀度的箱板纸制造方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0489930A1 (fr) * 1990-06-28 1992-06-17 MITSUI TOATSU CHEMICALS, Inc. Procede de fabrication de papier et additif associe
WO2003006738A1 (fr) * 2001-07-09 2003-01-23 Amcor Packaging (Australia) Pty Ltd. Dispositif et procede destines a ameliorer la resistance de papier
WO2003064764A1 (fr) * 2002-01-29 2003-08-07 Metso Paper, Inc. Dispositif de traitement pour traiter une bande fibreuse couchee ou non couchee

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0489930A1 (fr) * 1990-06-28 1992-06-17 MITSUI TOATSU CHEMICALS, Inc. Procede de fabrication de papier et additif associe
WO2003006738A1 (fr) * 2001-07-09 2003-01-23 Amcor Packaging (Australia) Pty Ltd. Dispositif et procede destines a ameliorer la resistance de papier
WO2003064764A1 (fr) * 2002-01-29 2003-08-07 Metso Paper, Inc. Dispositif de traitement pour traiter une bande fibreuse couchee ou non couchee

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102154909A (zh) * 2010-12-31 2011-08-17 东莞理文造纸厂有限公司 添加低成本填料的箱板纸制备工艺
CN102154918A (zh) * 2010-12-31 2011-08-17 东莞理文造纸厂有限公司 改善纸面匀度的箱板纸制造方法

Also Published As

Publication number Publication date
DE112005003115T5 (de) 2007-10-31
FI20045471A (fi) 2006-06-11
FI120881B (fi) 2010-04-15
FI20045471A0 (fi) 2004-12-10
CN101068978A (zh) 2007-11-07

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