WO1987005062A1 - Heating system with a sectionwise controllable heat supply for paper webs in a running state - Google Patents

Heating system with a sectionwise controllable heat supply for paper webs in a running state Download PDF

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Publication number
WO1987005062A1
WO1987005062A1 PCT/EP1987/000065 EP8700065W WO8705062A1 WO 1987005062 A1 WO1987005062 A1 WO 1987005062A1 EP 8700065 W EP8700065 W EP 8700065W WO 8705062 A1 WO8705062 A1 WO 8705062A1
Authority
WO
WIPO (PCT)
Prior art keywords
paper
heating
sectionwise
heat supply
running state
Prior art date
Application number
PCT/EP1987/000065
Other languages
French (fr)
Inventor
Cornelis Hendrikus Alsema
Original Assignee
Cornelis Hendrikus Alsema
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 Cornelis Hendrikus Alsema filed Critical Cornelis Hendrikus Alsema
Publication of WO1987005062A1 publication Critical patent/WO1987005062A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2845—Details, e.g. provisions for drying, moistening, pressing
    • B31F1/285—Heating or drying equipment
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/004—Drying webs by contact with heated surfaces or materials
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/003—Indicating or regulating the moisture content of the layer

Definitions

  • Heating system with a sectionwise controllable heat supply for paper webs in a running state.
  • the invention comprises a system with a heating element of a sectional structure over which webs of paper or paper product are led so that webs with a crosswise difference in moisture content will be heated per section and in such a way that a flat paper web or paper product is obtained.
  • Customary is to heat the web by means of drum-type cylinders filled with pressurized steam, against which the paper is guided and subsequently corrected through water sprays or nozzles as described amongst others in EP-B-0042497.
  • pressurized steam against which the paper is guided and subsequently corrected through water sprays or nozzles as described amongst others in EP-B-0042497.
  • steam drums there are also other heating systems known and specified as f.i. in Dutch patent application no. 7307303.
  • the subject system is meant to improve the quality of the final product by remedying the defect of wet streaks through a sectionwise heat control. After the paper or paper web has passed the system, the remaining moisture has been equally distributed across the width of the web.
  • Paper web 1 is guided under guide roller 2 over a number of heating plates 3 which are mounted next to one another across the width of paper web 1.
  • Each heating plate 3 has a steam supply 4 which can be controlled by control valves 5 or by automatically activated valves. By applying more steam or less, the temperature of the heating plates will increase or decrease.
  • Guide roller 2 will take care that paper web 1 will be brought in a more close or less close contact with heating plates 3.
  • Guide roller 2 can be moved up and down by threaded spindle 6 and threaded bushing 7 which are mounted on both sides of the system. Threaded spindle 6 is driven by an electromotor mounted on one side of the system and this motor will also drive the other spindle crosswise by means of intermediate shaft 9. All condensate drains are connected with the steam system via a steam trap.
  • Figure 2 is a schematic representation of a double backer where only some rollers 11 and 1 section are outlined. It may be remarked that this machine can hold a number of sections, depending on the desired final results.
  • conveyor belt 10 and heating plates 3 can be pressed upon each other with a varying intensity. Through the pressure of the plates, sectionwise controllable heat transfer will take place in the longitudinal direction of the web.
  • Figure 3 shows a cross-section of the situation.
  • the maximum working pressure of heating plates 3 is ⁇ 16 Bar of steam.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

System with a heating element of a sectional structure over which webs of paper or paper product are led so that webs with a crosswise difference in moisture content will be heated per section and in such a way that a flat paper web or paper product is obtained.

Description

Heating system with a sectionwise controllable heat supply for paper webs in a running state.
The invention comprises a system with a heating element of a sectional structure over which webs of paper or paper product are led so that webs with a crosswise difference in moisture content will be heated per section and in such a way that a flat paper web or paper product is obtained.
It is a known fact that due to the manufacturing process or storage of the paper an unequal moisture distribution will take place in the paper web. It has become apparent that this phenomenon occurs streakwise.
Deterioration of the convertibility and quality of the final product will be the consequence.
Customary is to heat the web by means of drum-type cylinders filled with pressurized steam, against which the paper is guided and subsequently corrected through water sprays or nozzles as described amongst others in EP-B-0042497. Apart from the known steam drums, there are also other heating systems known and specified as f.i. in Dutch patent application no. 7307303.
The subject system is meant to improve the quality of the final product by remedying the defect of wet streaks through a sectionwise heat control. After the paper or paper web has passed the system, the remaining moisture has been equally distributed across the width of the web.
The application is explained by means of Fig. 1. The installation is illustrated in perspective by Fig. 1.
Paper web 1 is guided under guide roller 2 over a number of heating plates 3 which are mounted next to one another across the width of paper web 1.
Each heating plate 3 has a steam supply 4 which can be controlled by control valves 5 or by automatically activated valves. By applying more steam or less, the temperature of the heating plates will increase or decrease.
Guide roller 2 will take care that paper web 1 will be brought in a more close or less close contact with heating plates 3.
Guide roller 2 can be moved up and down by threaded spindle 6 and threaded bushing 7 which are mounted on both sides of the system. Threaded spindle 6 is driven by an electromotor mounted on one side of the system and this motor will also drive the other spindle crosswise by means of intermediate shaft 9. All condensate drains are connected with the steam system via a steam trap.
Figure 2 is a schematic representation of a double backer where only some rollers 11 and 1 section are outlined. It may be remarked that this machine can hold a number of sections, depending on the desired final results.
According to figure 2 similar heating plates 3 have been mounted at the upper side of the corrugated board 14 and conveyor belt 10.
By means of air-pressure control system 12 and a mechanical connection 13, conveyor belt 10 and heating plates 3 can be pressed upon each other with a varying intensity. Through the pressure of the plates, sectionwise controllable heat transfer will take place in the longitudinal direction of the web.
Figure 3 shows a cross-section of the situation. The maximum working pressure of heating plates 3 is ± 16 Bar of steam.

Claims

1. System for thermal treatment of running webs of fibrous material, such as paper or paper product, c h a r a c t e r i z e d that the fibre web to be heat-treated will be guided over a number of heating elements positioned side by side in the direction of the paper line and of which the temperature is adjustable (controlled) per element.
2. System according to claim 1, c h a r a c t e r i z e d that the heating elements 3 are positioned in the direction of the paper line in a somewhat arched fashion.
3. System according to claim 1, c h a r a c t e r i z e d that the elements have a dual heating surface to be able to radiate at both upper and lower sides.
4. System acoording to claim 1-3, c h a r a c t e r i z e d that the moisture in the web will evaporate through the heat supply to the paper.
5. System according to claim 1-3, c h a r a c t e r i z e d that guide or idler rollers are present to control the effective length of the heating surface.
6. System according to claim 1-3, c h a r a c t e r i z e d that heating will take place by means of steam of which the pressure will be varied per section.
7. System according to claim 1-3, c h a r a c t e r i z e d that the heating elements are electrically heated.
PCT/EP1987/000065 1986-02-24 1987-02-16 Heating system with a sectionwise controllable heat supply for paper webs in a running state WO1987005062A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8600454 1986-02-24
NL8600454A NL8600454A (en) 1986-02-24 1986-02-24 HEATING DEVICE FOR RUNNING JOBS PAPER WITH SECTION-CONTROLLED ADJUSTABLE HEAT SUPPLY.

Publications (1)

Publication Number Publication Date
WO1987005062A1 true WO1987005062A1 (en) 1987-08-27

Family

ID=19847615

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1987/000065 WO1987005062A1 (en) 1986-02-24 1987-02-16 Heating system with a sectionwise controllable heat supply for paper webs in a running state

Country Status (3)

Country Link
EP (1) EP0258342A1 (en)
NL (1) NL8600454A (en)
WO (1) WO1987005062A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697201A1 (en) * 1992-10-28 1994-04-29 Saint Gobain Papier Bois Gie C Method and device for manufacturing corrugated cardboard.
WO1996026834A1 (en) * 1995-02-27 1996-09-06 Bhs Corrugated Maschinen- Und Anlagenbau Gmbh Corrugated cardboard manufacturing process
EP0768170A1 (en) * 1995-10-13 1997-04-16 Marquip, Inc. Fabricated hot plate, particularly for corrugated paperboard making
EP0949064A2 (en) * 1998-04-08 1999-10-13 PETERS MASCHINENFABRIK GmbH Assembly of pressure plates for joining sheets of material, each comprising at least one flat sheet and/or at least one corrugated sheet and a corrugated sheet
EP0949065A2 (en) * 1998-04-08 1999-10-13 MARQUIP, Inc. Heated holddown mat for corrugator double backer
EP0957328A3 (en) * 1998-05-12 2000-06-07 PETERS MASCHINENFABRIK GmbH Device for preheating a material web with spatial resolution
WO2016169675A1 (en) * 2015-04-20 2016-10-27 Bhs Corrugated Maschinen- Und Anlagenbau Gmbh Heating device, comprising two preceding arcuate hot plates, of a two-sided machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2219065A (en) * 1938-09-24 1940-10-22 George W Swift Jr Double backing machine
FR1448224A (en) * 1965-06-18 1966-08-05 Parsons & Whittemore Device for preparing products in strips with a view to their bonding
EP0135052A2 (en) * 1983-08-19 1985-03-27 Werner H. K. Peters Maschinenfabrik GmbH Heating device for corrugated board in a machine for uniting the corrugated board with a web
WO1985001969A1 (en) * 1983-10-27 1985-05-09 Chleq Frote Et Cie. Drying cylinder for a web material machine, particularly a paper machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2219065A (en) * 1938-09-24 1940-10-22 George W Swift Jr Double backing machine
FR1448224A (en) * 1965-06-18 1966-08-05 Parsons & Whittemore Device for preparing products in strips with a view to their bonding
EP0135052A2 (en) * 1983-08-19 1985-03-27 Werner H. K. Peters Maschinenfabrik GmbH Heating device for corrugated board in a machine for uniting the corrugated board with a web
WO1985001969A1 (en) * 1983-10-27 1985-05-09 Chleq Frote Et Cie. Drying cylinder for a web material machine, particularly a paper machine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697201A1 (en) * 1992-10-28 1994-04-29 Saint Gobain Papier Bois Gie C Method and device for manufacturing corrugated cardboard.
EP0595711A1 (en) * 1992-10-28 1994-05-04 Centre De Recherche Saint-Gobain Papier-Bois Gie Method and apparatus for the manufacture of corrugated cardboard
WO1996026834A1 (en) * 1995-02-27 1996-09-06 Bhs Corrugated Maschinen- Und Anlagenbau Gmbh Corrugated cardboard manufacturing process
EP0768170A1 (en) * 1995-10-13 1997-04-16 Marquip, Inc. Fabricated hot plate, particularly for corrugated paperboard making
EP0949064A2 (en) * 1998-04-08 1999-10-13 PETERS MASCHINENFABRIK GmbH Assembly of pressure plates for joining sheets of material, each comprising at least one flat sheet and/or at least one corrugated sheet and a corrugated sheet
EP0949065A2 (en) * 1998-04-08 1999-10-13 MARQUIP, Inc. Heated holddown mat for corrugator double backer
EP0949065A3 (en) * 1998-04-08 2000-07-12 MARQUIP, Inc. Heated holddown mat for corrugator double backer
EP0949064A3 (en) * 1998-04-08 2001-12-05 PETERS MASCHINENFABRIK GmbH Assembly of pressure plates for joining sheets of material, each comprising at least one flat sheet and/or at least one corrugated sheet and a corrugated sheet
EP0957328A3 (en) * 1998-05-12 2000-06-07 PETERS MASCHINENFABRIK GmbH Device for preheating a material web with spatial resolution
US6298895B1 (en) 1998-05-12 2001-10-09 Peters Maschinenfabrik, Gmbh Device for locally controllable preheating of a material web
WO2016169675A1 (en) * 2015-04-20 2016-10-27 Bhs Corrugated Maschinen- Und Anlagenbau Gmbh Heating device, comprising two preceding arcuate hot plates, of a two-sided machine
US10583624B2 (en) 2015-04-20 2020-03-10 Bhs Corrugated Maschinen- Und Anlagenbau Gmbh Heating device, comprising two preceding arcuate hot plates, of a two-sided machine

Also Published As

Publication number Publication date
NL8600454A (en) 1987-09-16
EP0258342A1 (en) 1988-03-09

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