EP0975434A1 - Dispositif d'encollage pour installation de production de carton ondule - Google Patents

Dispositif d'encollage pour installation de production de carton ondule

Info

Publication number
EP0975434A1
EP0975434A1 EP98928078A EP98928078A EP0975434A1 EP 0975434 A1 EP0975434 A1 EP 0975434A1 EP 98928078 A EP98928078 A EP 98928078A EP 98928078 A EP98928078 A EP 98928078A EP 0975434 A1 EP0975434 A1 EP 0975434A1
Authority
EP
European Patent Office
Prior art keywords
glue
endless
endless belt
material web
screen
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
EP98928078A
Other languages
German (de)
English (en)
Other versions
EP0975434B1 (fr
Inventor
Lothar Jobst
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.)
BHS Corrugated Maschinen und Anlagenbau GmbH
Original Assignee
BHS Corrugated Maschinen und Anlagenbau 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
Priority claimed from DE1997116714 external-priority patent/DE19716714A1/de
Priority claimed from DE1997148892 external-priority patent/DE19748892A1/de
Application filed by BHS Corrugated Maschinen und Anlagenbau GmbH filed Critical BHS Corrugated Maschinen und Anlagenbau GmbH
Publication of EP0975434A1 publication Critical patent/EP0975434A1/fr
Application granted granted Critical
Publication of EP0975434B1 publication Critical patent/EP0975434B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B31F1/2818—Glue application specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/14—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a travelling band

Definitions

  • the invention relates to a method for applying glue to an endless web, in particular to corrugated tips of a corrugated side of an endless web in the production of corrugated cardboard, and to a glue unit suitable for carrying out the method.
  • gluing units for corrugated cardboard systems as are known, for example, from DE 39 24 273 C2, the wave crests or wave tips are glued to a corrugated side of a material web, for example a single-sided corrugated cardboard, in such a way that by means of a metering roller and a glue application roller exactly defined gap is formed, on one side of which in a
  • Glue tub located glue is provided.
  • the metering roller and the glue application roller are driven in opposite directions so that a glue layer with a predetermined thickness is formed on the surface of the glue application roller after the gap.
  • the material web to be glued is brought into contact with the glue-coated surface of the glue application roller.
  • the gap to be set between the metering roller and the glue application roller must be reduced to very small values of the order of a few tenths of a millimeter. This gap width must also be maintained with the highest precision, for example with a tolerance of ⁇ 0.02 mm. This results in a maximum eccentricity or concentricity deviation of the rolls of less than 0.01 mm. As the solids content of the glue increases, there is a demand for ever smaller glue layer thicknesses and thus for ever smaller gap widths between the metering roller and the glue application roller.
  • the invention is therefore based on the object of providing a method for applying glue to an endless web, in particular on corrugated tips of a corrugated side of a material web, and a suitable gluing unit, with smaller glue layer thicknesses being achievable or smaller amounts of glue being applied to the continuous web to be glued can be.
  • the glue unit should be simple in construction and inexpensive to manufacture.
  • the invention is based on the knowledge that the requirements for a smaller thickness of the glue layer on the glue application roller or for a smaller amount of glue applied to the paper web to be glued can hardly be met with the conventional system consisting of metering roller and glue application roller, since the Manufacturing tolerances for the rollers for currently used gluing plants are already so small and the requirements for the accuracy of the storage and drive of the rollers are already so high that the limit of feasibility seems to have been reached.
  • the invention therefore goes the completely new way of applying the glue to the surface to be glued or to the surface of a glue application element by means of an endless screen or endless belt with a structured surface.
  • This has the advantage of lower manufacturing tolerances and less effort in the storage and drive of the rollers.
  • glues with a relatively low viscosity can also be processed, since the structures of the endless belt or the pores of the endless sieve achieve better adhesion of the glue and thus, even at high processing speeds, the risk of glue being thrown off with conventional glue application rollers with a smooth surface is turned off.
  • the glue application element can also be dispensed with, so that the direct application of the glue from the surface of the endless belt or endless sieve to the surface of the material web to be glued results in a much simpler construction of the glue unit.
  • an endless sieve guided around at least two deflection rollers is used, a glue trough being provided which extends across a width corresponding to at least the width of the material web to be glued, the endless sieve being in contact with a surface for glue absorption with the glue in the glue pan.
  • the glue pan is provided and designed such that the front wall of the glue pan in the conveying direction lies essentially tightly against the inner or outer surface of the endless screen.
  • glue passes through the sieve and a glue layer of a predetermined thickness can thus be produced on the surface of the endless sieve facing away from the glue pan.
  • the thickness of the glue layer depends on several parameters, among others on the permeability of the sieve, on the pressure with which the glue is applied to the relevant surface of the endless screen, on the Viscosity of the glue and the speed at which the endless sieve is moved relative to the amount of glue in the glue tub.
  • the passage of the glue can be made possible either by the dynamic pressure and / or static pressure of the glue in the glue pan opposite the surface of the endless screen or by the "artificial generation" of a pressure in the glue pan, for example by means of a controllable pump. In the latter case, the glue unit must of course be essentially sealed off from the surface of the endless screen.
  • control of the pump can be controlled or regulated depending on the pressure in the glue pan or on the thickness of the glue layer produced on the surface of the endless screen facing away from the glue unit.
  • Figure 1 is a schematic representation of a first embodiment of the invention in side view.
  • FIG. 2 shows a schematic illustration of a second embodiment of the invention in side view with a pressure-controllable one
  • Glue pan shows a schematic illustration of a third embodiment of the glue unit according to the invention with a glue pan which enables the glue to be applied with dynamic pressure or static pressure;
  • Fig. 4 shows a fourth embodiment of a glue unit according to the invention, in which a glue application element is additionally provided and
  • FIG. 5 shows a schematic illustration of a one-sided corrugated cardboard machine with a gluing unit according to the invention in accordance with a fifth embodiment.
  • gluing unit 1 shows a gluing unit 1 according to the invention within a system or a system part of a corrugated cardboard machine for producing a double-sided corrugated cardboard web 3, the system or the system part being supplied with a single-sided corrugated cardboard web 5 which is initially provided with glue by means of the gluing unit 1 and then merged with a smooth cover sheet 7 to double-sided corrugated cardboard 3.
  • the gluing unit 1 has an endless belt 9 which is guided around three deflecting rollers 11a, 11b, 11c.
  • the width of the endless belt 9 is chosen to be larger than the largest
  • At least one of the deflection rollers 11a, 11b, 11c of the gluing unit 1 can be driven by means of a predetermined, adjustable speed.
  • a glue tub 13 is provided below the system consisting of the deflection rollers 11a, 11b, 11c and the endless belt 9 guided around it, the position tion of the glue pan 13 is selected so that the endless belt 9 in the area below the deflection roller 1 lc immersed in the glue 15 located in the glue pan 13.
  • the glue pan 13 can have side walls, not shown, which seal the glue pan laterally with respect to the endless belt 9.
  • the side walls can also be designed to be displaceable in the direction of the axes of the deflection rollers 11a, 11b, 11c in order to adjust the width of the glue application on the outer surface 9a to the width of the corrugated cardboard web 3 to be produced.
  • the width of the glue layer on the surface 9a must of course be selected so that the partial web 5 to be glued, in the example shown the one-sided one
  • Corrugated cardboard web 5 is glued in its entire width.
  • the endless belt is driven by the deflection rollers 11a, 11b, 11c clockwise, so that the strand of the endless belt between the deflection rollers 1 lc and 1 la due to the immersion of the endless belt in the glue 15 in the selected width is coated with glue.
  • the glue layer is still irregular and still too thick for gluing the peaks or peaks of the corrugated surface of the one-sided corrugated cardboard web 5.
  • a scraper 17 is therefore provided which extends over essentially the entire area
  • Width of the endless belt 9 extends and abuts at least one edge on the surface 9a of the endless belt 9.
  • the surface of the endless belt 9 is provided with a surface structure which is suitable for receiving a predetermined amount of glue in the recesses thereof.
  • the scraper 17 thus removes the glue located above the depressions in the surface structure of the surface 9a of the endless belt 9.
  • the removed glue enters the glue bath 15 within the glue tub 13.
  • the upper edge of the front wall 19 can of course also be designed such that it abuts the surface 9a of the endless belt 9 and also takes over the function of the scraper.
  • a corresponding scraper can also be arranged on the upper edge of the front wall 19 of the glue tub 13.
  • the surface 9a loaded with the defined amount of glue is brought into contact with the corrugation peaks of the one-sided corrugated cardboard web 5 to be glued.
  • the corrugated cardboard web is brought into contact with the strand of the endless belt 9 located between the deflecting rollers 11a and 11lb.
  • An endless belt 21 is used to press the corrugated cardboard web against this strand, the lower strand of which is guided essentially parallel to the strand of the endless belt 9 between the deflection rollers 11a and 11b.
  • the endless belt 21 guided around at least two deflecting rollers can be driven at the same speed as the endless belt 9 of the gluing unit 1.
  • a pressure device can be provided above the lower run of the endless belt 21. As shown in FIG. 1, this can be designed as a pressure hood.
  • the amount of glue applied can therefore be set within certain limits.
  • the minimum amount of glue applied results in the event that there is no relative speed.
  • the amount of glue transferred can also be adjusted by changing the length of the area (in the direction of transport of the web), regardless of whether it runs in a straight line, as shown in FIG. 1, or curved, as in the following embodiments.
  • the area length can be set, for example, by means of deflection rollers for the web to be glued or by moving the gluing unit.
  • the metering of the amount of glue transferred to the web 5 can also (or additionally) take place in such a way that the mechanical deformation of the
  • the tension of the endless belt can be controlled or regulated by means of an adjustable tensioning roller in a manner not shown.
  • Endless sieve are used, the mechanical deformation of the endless sieve changing the pore size and thus the transmission properties of the sieve for the glue.
  • doctoring can occur of the glue above the pores of the sieve, so that the dosage takes place only by changing the pore volume.
  • a pressure device can again be provided above the lower run of the endless belt 21 after the merging point.
  • the pressure device can in turn be designed as a pressure hood.
  • a plate 25 serves as a repository.
  • the advantage of the gluing unit shown in FIG. 1 is that the glue can be applied directly to the one-sided corrugated cardboard web to be glued by means of the endless belt provided with a structured surface. This results in a simple and inexpensive construction of the gluing unit.
  • an endless screen can also be provided in the gluing unit according to FIG. 1.
  • a certain amount of glue is pressed through the screen to the inner surface. This applies at least when the sieve is immersed in the glue bath 15 by a sufficient amount.
  • the amount of glue pressed through the endless screen to the inner surface is essentially determined by the length of the glue-wetted strand between the surface of the glue bath 15 and the line of contact and the mesh size of the sieve, as well as the viscosity of the glue and the speed of the endless sieve. If an endless screen is used, the scraper 17 will be arranged in such a way that it removes the excess amount of glue at one position before the endless screen is brought into contact with the deflection roller 1a.
  • the amount of glue located on the inside of the endless sieve is pressed outwards by the sieve being pressed against the deflection roller 1a by the sieve.
  • a layer of glue with a predetermined thickness forms on the outside of the screen.
  • Glue passes away.
  • a further deflection roller can be provided, so that the glue can be pressed outward much earlier than is the case with the device according to FIG. 1.
  • the glue tub 34 is supplied with glue, so that a predetermined pressure is generated in the glue tub 34, which is sufficient to press a predetermined amount of glue through the endless sieve 30.
  • a glue layer with a predetermined width and a predetermined thickness is formed on the inside 30b of the endless screen 30.
  • the glue is applied to the single-sided corrugated cardboard web 5 only by bringing the single-sided corrugated cardboard web into contact with a predetermined wrap angle on the deflecting roller 32b, the amount of glue pushed through the endless screen 30 by means of the deflecting roller 32a remains for a relatively long time. until it is actually brought into contact with the one-sided corrugated cardboard web 5. During this time, the glue layer can even out as described above. After the line or the region of contacting the endless screen or the glue layer with the one-sided corrugated cardboard web 5 on the deflection roller 32b, the remaining glue is removed by means of an auxiliary glue pan 38, the front transverse wall of which is designed as a corresponding scraper.
  • the glue collected in the auxiliary glue pan 38 can be fed to a glue reservoir 40, from which the glue is fed to the glue pan 34 at a predetermined pressure by means of the pump 35. Further glue can of course be fed continuously or intermittently to the glue reservoir 40 in order to dispense the amount of the glue to the corrugated cardboard web to be glued
  • auxiliary glue trays 42 and 44 can be provided on the inward-facing wall regions of the deflection rollers 32a, 32b, which, in conjunction with corresponding scrapers, remove glue residues from the deflection rollers.
  • these auxiliary glue tubs 42, 44 can also be connected to the glue reservoir 40 and / or the auxiliary glue tub 38.
  • the embodiment of the invention shown in FIG. 3 essentially corresponds to the embodiment according to FIG. 2 with regard to the arrangement of the deflection rollers 32a, 32b and the endless screen 30 and the auxiliary glue pan 38.
  • a glue pan 36 is used in this embodiment, which is provided in the inner region of the endless screen 30 on the lower run of the endless screen 30.
  • the glue in the glue tub exerts a static and / or dynamic pressure on the inside 30b of the endless sieve 30, so that, depending on the viscosity of the glue, the mesh size of the endless sieve and the speed of the endless sieve 30, a predetermined amount of glue is pressed through the sieve . This results in a quasi-homogeneous layer of glue on the outside 30a of the endless screen 30, at least when the glue has a sufficiently low viscosity.
  • Differential speed between the corrugated cardboard web 5 to be glued and the endless screen 30 can be set.
  • a "spreading" of the discrete “glue piles” that may be present on the outside 30a and also an adjustment of the amount of glue transferred to the wave crests of the web 5 can be achieved in the manner described above.
  • FIG. 4 shows an embodiment of the invention in which the gluing unit 1 is largely similar to the exemplary embodiment shown in FIG. 3 with regard to the system consisting of the deflection rollers and the endless belt or endless sieve guided around it, but only two deflection rollers 32a, 32b are used .
  • the use of an endless belt 9 with a structured outer surface 9a is again appropriate, since the amount of glue on the surface 9a is generated by immersing it in a glue bath 15 of a glue tub 13 and the subsequent stripping of unnecessary glue.
  • the glue contained on the outer surface 9a of the endless belt 9 in the depressions of the structured surface is, however, transferred to a glue application element 46 in the form of a glue application roller in the exemplary embodiment according to FIG. 4.
  • the glue application roller 46 can be speed are driven so that there is a relative speed at the point of contact or in the line of contact between the circumference of the glue application roller 46 and the endless belt 9. In this way, a dosage of the glue can be achieved. Possibly. a corresponding regulation or control of the relative speed can take place.
  • the glue application roller 46 is driven clockwise, it is preferably driven at a lower speed than the endless belt 9. This ensures that viewed in the direction of movement of the endless belt 9, before the point of contact with the glue application roller no glue build-up. Rather, it is hereby achieved that the amount of glue transferred per area to the glue application roller 46 is less than the amount of glue delivered per area by the endless belt 9. The difference in speed also results in the effect of a "spreading" of the glue layer on the glue application roller 46. Thus, even when using a structured one, the result
  • FIG. 5 shows a schematic illustration of the components of a single-sided corrugated cardboard machine 100 that are essential for understanding the present invention, with a gluing unit 1 according to the invention, which is essentially identical to the embodiment in FIG. 1.
  • a gluing unit 1 according to the invention, which is essentially identical to the embodiment in FIG. 1.
  • all other possible embodiments of the gluing unit according to the invention can also be used in an analogous manner with the single-sided corrugated cardboard machine 100.
  • the corrugated cardboard machine 100 comprises a feed-side deflecting roller 102 for feeding the partial web 5 to be glued, which is first fed to two corrugating rollers 104, 106 which interact in the usual way.
  • the feeding and pressing of the partial web 7 to be glued to the glued partial web 5 takes place by means of a feeding device 108 which has an endless pressure belt 110 guided around three rollers.
  • a strand 110a of the pressure belt 110 acts on the upper corrugating roller 106 with a predetermined wrap angle, the partial webs 5 and 7 being pressed against one another and against the upper corrugating roller 106 in this area with a predetermined pressing force.
  • the gluing unit 1 is provided within a pressure chamber 112 which, among other things, ensures, in a manner known per se, that the partial web 5 to be glued (now corrugated) which runs around the upper corrugating roller is to be glued.
  • the gluing unit 1, which acts with the structured endless belt 9 with a predetermined wrap angle on the upper corrugating roller 106 or the continuous web 5 guided around it, can be moved in the direction of arrow I away from or towards the corrugating roller. In this way, on the one hand, the wrap angle can be set and, on the other hand, the partial web 5 to be glued can be prevented from softening if the machine is stopped.
  • the endless belt 9 of the gluing unit 1 can also continue to run, thus preventing the glue from drying on the belt.
  • the use of a glue unit according to the invention has the advantage that the gluing takes place not only essentially at a linear contact, but also over an area which is longer in the transport direction of the web 5 to be glued . In the embodiment shown, this is done by providing a predetermined wrap angle.
  • the wrap angle (and thus the area in which the web 5 is pressed against the corrugating roller 106 and in which the web 5 is in contact with the belt 9 transferring the glue) and the contact pressure can also be independent be changed from each other.
  • the wrap angle can be changed by adjusting the horizontal position of the gluing unit in the direction of arrow I, and the contact pressure can be changed by providing a tensioning roller (not shown) which acts on the belt 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Making Paper Articles (AREA)

Abstract

L'invention concerne un procédé d'application de colle sur une bande de matériau, en particulier sur la crête des ondulations du côté ondulé d'une bande de matériau, la colle étant appliquée sur la surface ou bien dans les pores d'un tamis (30) ou d'une bande sans fin (9) à surface structurée (9a), qui s'étend sur toute la largeur de la bande de matériau, et la surface à encoller de la bande de matériau (5) se déplaçant dans le sens longitudinal étant mise en contact avec la colle se trouvant sur la surface ou dans les pores du tamis (30) ou de la bande sans fin (9). Au lieu de procéder à une application de colle directe d'une bande sans fin ou d'un tamis sans fin sur la bande à encoller, on peut procéder à une application de colle se faisant d'abord sur un élément d'application de colle et à partir de celui-ci sur la bande à encoller. L'invention concerne en outre des dispositifs d'encollage correspondants permettant la mise en oeuvre dudit procédé.
EP98928078A 1997-04-21 1998-03-26 Dispositif d'encollage pour installation de production de carton ondule Expired - Lifetime EP0975434B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE1997116714 DE19716714A1 (de) 1997-04-21 1997-04-21 Leimwerk für eine Wellpappenanlage
DE19716714 1997-04-21
DE19748892 1997-11-05
DE1997148892 DE19748892A1 (de) 1997-11-05 1997-11-05 Leimwerk für eine Wellpappenanlage
PCT/DE1998/000886 WO1998047628A1 (fr) 1997-04-21 1998-03-26 Dispositif d'encollage pour installation de production de carton ondule

Publications (2)

Publication Number Publication Date
EP0975434A1 true EP0975434A1 (fr) 2000-02-02
EP0975434B1 EP0975434B1 (fr) 2002-09-25

Family

ID=26035956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98928078A Expired - Lifetime EP0975434B1 (fr) 1997-04-21 1998-03-26 Dispositif d'encollage pour installation de production de carton ondule

Country Status (4)

Country Link
EP (1) EP0975434B1 (fr)
JP (1) JP2001520579A (fr)
DE (1) DE59805704D1 (fr)
WO (1) WO1998047628A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100868727B1 (ko) * 2007-07-18 2008-11-13 주식회사 보우 편면 골판지 제조기용 가압벨트식 엔드레스 벨트
PL2225046T3 (pl) * 2007-12-13 2013-01-31 Xylo Tech Ag Urządzenie powlekające
JP6040571B2 (ja) * 2012-05-23 2016-12-07 富士ゼロックス株式会社 画像形成装置
CN106111439A (zh) * 2016-08-18 2016-11-16 四川远星橡胶有限责任公司 一种胶片挂胶装置
SE544301C2 (en) * 2019-12-23 2022-03-29 Stora Enso Oyj A method for coating a fibrous web using a textured substrate

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3924273A1 (de) 1989-07-22 1991-01-31 Bhs Bayerische Berg Leimauftragsvorrichtung fuer eine bewegte materialbahn, insbesondere an einer einseitigen wellpappenmaschine
DE4316008A1 (de) * 1993-05-13 1994-11-17 Domaga Fa Verfahren und Vorrichtung zum Auftragen von Flüssigkeiten auf die Lederoberfläche oder ähnliche flache Materialien

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9847628A1 *

Also Published As

Publication number Publication date
EP0975434B1 (fr) 2002-09-25
JP2001520579A (ja) 2001-10-30
WO1998047628A1 (fr) 1998-10-29
DE59805704D1 (de) 2002-10-31

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