EP3402662B1 - Procédé et dispositif de pliage de carton ondulé - Google Patents

Procédé et dispositif de pliage de carton ondulé Download PDF

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Publication number
EP3402662B1
EP3402662B1 EP16785398.5A EP16785398A EP3402662B1 EP 3402662 B1 EP3402662 B1 EP 3402662B1 EP 16785398 A EP16785398 A EP 16785398A EP 3402662 B1 EP3402662 B1 EP 3402662B1
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EP
European Patent Office
Prior art keywords
liquid mixture
corrugated
cardboard
corrugated cardboard
vol
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.)
Active
Application number
EP16785398.5A
Other languages
German (de)
English (en)
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EP3402662A1 (fr
Inventor
Thomas Stober
Werner Wolf
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.)
Wilhelm Bahmueller Maschinenbau Praezisionswerkzeuge GmbH
Original Assignee
Wilhelm Bahmueller Maschinenbau Praezisionswerkzeuge 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 DE102016100570.3A external-priority patent/DE102016100570A1/de
Priority claimed from DE102016114660.9A external-priority patent/DE102016114660A1/de
Application filed by Wilhelm Bahmueller Maschinenbau Praezisionswerkzeuge GmbH filed Critical Wilhelm Bahmueller Maschinenbau Praezisionswerkzeuge GmbH
Publication of EP3402662A1 publication Critical patent/EP3402662A1/fr
Application granted granted Critical
Publication of EP3402662B1 publication Critical patent/EP3402662B1/fr
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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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/585—Folding sheets, blanks or webs by air jets
    • 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/25—Surface scoring
    • 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/741—Moistening; Drying; Cooling; Heating; Sterilizing
    • 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
    • B31F1/08—Creasing
    • 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
    • B31F1/36—Moistening and heating webs to facilitate mechanical deformation and drying deformed webs

Definitions

  • the invention relates to a method for folding blanks from corrugated or solid cardboard for the production of folding boxes.
  • the invention further relates to an apparatus for performing the method.
  • blanks In the manufacture of solid or corrugated cardboard boxes, blanks are used which are provided with creasing lines, cracks or perforations, along which the blanks can be folded or folded in order to thereby e.g. to produce folding boxes designed with a bottom surface, an outer surface and a top surface.
  • Corrugated cardboards comprise, for example, two flat paper webs, between which there is a corrugated paper web.
  • a corrugated cardboard is also referred to as single-layer or single-corrugated cardboard
  • a double-layer or double-corrugated cardboard comprising two flat paper webs arranged on the outside, one flat paper web arranged on the inside and two corrugated paper webs, each of which is arranged between the inner flat paper web and one of the two on the outside flat paper webs are arranged.
  • three-layer or three-corrugated corrugated cardboard and other multi-corrugated corrugated cardboard are known, with corrugated cardboard further differentiating between different corrugation types and combinations of these corrugation types according to the corrugation heights and the corrugations.
  • the corrugated cardboard is arranged in such a way that in the outer surfaces of the folding boxes the waves run from the bottom surface to the top surface or the channels formed by the corrugations run from the bottom surface to the top surface of the folding box ,
  • creasing lines, cracks or perforations which are aligned parallel to the course of the waves must be introduced into the jacket surface, along which the jacket surface between the individual side surfaces the folding box can be folded or folded.
  • the creasing lines, cracks or perforations can be arranged along a wave trough, along a wave crest or along the flank between a wave trough or a wave crest, with folding not being exact due to the stiffness of the material along the line or creasing line, scoring or perforation required for this. Rather, deviations from a predetermined folding line can occur, which can subsequently result in the two mutually associated end regions of the lateral surface not being connected at the location provided for this purpose.
  • the problem that the folding does not take place exactly along a given line is also referred to in specialist circles as fishtailing and gap fluctuation.
  • the problem of fish tailing and gap fluctuation can be more pronounced with double-wall or three-wall corrugated cardboard and with a fluctuating quality of the materials used for the production of the corrugated cardboard, which can lead to problems with compliance with dimensional tolerances and with the automatic filling of the folding boxes.
  • a machine for folding folding box blanks which has various means for locally moistening the folding box blank.
  • a brush is used to moisten the underside, the lower end of which is in a reservoir filled with a liquid.
  • a nozzle is used to moisten the top. The liquid emerging from the nozzle falls onto a baffle plate and drips from there onto the folding box blank.
  • a liquid mixture which is suitable for making corrugated cardboard supple before folding. It contains 10 to 30 percent by weight of a surfactant.
  • the invention is therefore based on the object of providing a method and a device for folding blanks from corrugated or solid cardboard for the production of folding boxes, which avoid the disadvantages mentioned. This object is achieved by a method with the features of claim 1.
  • the application of such a liquid mixture is particularly advantageous since, due to the addition of the surfactant, the surface tension of the liquid mixture can be reduced in such a way that the liquid mixture can penetrate more quickly into pores and thus into the fibers of the solid or corrugated cardboard blank.
  • the compressed gas is advantageously introduced into the two-component nozzle at a pressure in the range from approximately 0.5 bar to approximately 100 bar, preferably in the range from approximately 0.5 bar to approximately 16 bar initiated, the liquid mixture being metered in without pressure.
  • Drops with a diameter in the range from approximately 15 to approximately 25 ⁇ m, preferably with a diameter of approximately 20 ⁇ m, are advantageously produced.
  • the small drops of the drop jet generated in this way can be accelerated due to the pressurized compressed gas by means of the two-substance nozzle in such a way that the drops hit a surface of the solid or corrugated cardboard with a comparatively high kinetic energy, so that the drops are drawn into the porous solid - or corrugated cardboard can also be accelerated.
  • the creasing line is introduced by locally compressing the solid cardboard or different layers of the corrugated cardboard between a rotatably mounted sonotrode and a rotatably mounted anvil or a second sonotrode and exciting the compressed area of the solid cardboard or corrugated cardboard with ultrasound.
  • a rotatably mounted sonotrode and a rotatably mounted anvil or a second sonotrode and exciting the compressed area of the solid cardboard or corrugated cardboard with ultrasound.
  • the liquid mixture is advantageously applied to an upper side of the blank made of corrugated or solid cardboard and / or an underside of the blank made of corrugated or solid cardboard. Applying the liquid mixture to the top and bottom has proven to be particularly advantageous, with blanks coated on one side being able to apply the liquid mixture only to the top or only to the bottom.
  • the liquid mixture has a compressed gas pressure in the range from approximately 2.5 bar to approximately 7 bar, preferably with a pressure gas pressure of about 5 bar is atomized. Drops that are too large only penetrate a fraction into the capillary of the corrugated cardboard. If the drops are too large, they burst on the surface of the corrugated cardboard and are partially thrown back. Furthermore, the kinetic energy of the drops can be influenced with a sufficient pressure gas pressure of this magnitude in such a way that the drops of the liquid mixture quickly penetrate into the surface of the corrugated cardboard.
  • the liquid mixture is applied, in particular sprayed, orthogonally to a direction of transport of the corrugated cardboard in a width of approximately 3 mm onto an upper side and / or a lower side of the corrugated cardboard.
  • the liquid mixture is advantageously applied, in particular sprayed, to an upper side and / or a lower side of the corrugated cardboard at an angle of approximately 45 ° to a plane arranged parallel to a direction of transport of the corrugated cardboard.
  • An orthogonal impact of the drops of the liquid mixture can thus be avoided. It has been shown that an orthogonal impact of the liquid mixture on the corrugated cardboard can, on the one hand, cause the drops to burst on the surface of the corrugated cardboard and, on the other hand, can lead to a circular spread of the burst drops, thereby also causing the edge zone of the crack, perforation or crease line can be softened and thus also the above-mentioned folding accuracy problems can arise.
  • the application, in particular the spraying, of the liquid mixture is carried out in a clocked manner.
  • the spraying process is briefly interrupted, so that Liquid mixture is only applied in the area of the crack, perforation or crease line.
  • the cycle is carried out pneumatically, for example by interrupting the compressed gas supply to the two-component nozzle.
  • the clocking it is possible for the clocking to take place electrically, for example an nozzle which can be driven by an electric motor and which is designed to close the nozzle outlet of the two-component nozzle can be provided.
  • the device comprises a device for introducing a crevice, perforation or crease line into a solid or corrugated cardboard and at least one two-substance nozzle which is designed and arranged in such a way that a liquid mixture comprising at least 96% by volume of water and a maximum of 4% by volume of a surfactant , preferably comprising at least 98% by volume of water and a maximum of 2% by volume of a surfactant can be applied to the crevice, perforation or crease line previously introduced into the blank by atomization by means of a compressed gas or is designed and arranged in such a way that it comprises a liquid mixture at least 96% by volume of water and a maximum of 4% by volume of a surfactant, preferably comprising at least 98% by volume of water and a maximum of 2% by volume of a surfactant, before introducing a crack, perforation or crease line onto the cut from corrugated or Solid cardboard can be applied by atomization using a compressed gas.
  • the device for introducing the score, perforation or crease line comprises a rotatably mounted sonotrode and a rotatably mounted anvil or a second sonotrode.
  • the device for introducing the scoring, perforation or scoring line comprises a mechanical scoring body which is designed to produce a scoring line without the use of ultrasound.
  • the two-substance nozzle has a first nozzle inlet for the liquid mixture and a second nozzle inlet for a compressed gas, and that the two-substance nozzle has a nozzle outlet for the atomized liquid.
  • At least one two-substance nozzle is provided, which is arranged in such a way that the liquid mixture can be applied to an upper side of the blank made of corrugated or solid cardboard and / or if at least one two-substance nozzle is provided, which is arranged in such a way that the Liquid mixture can be applied to an underside of the blank made of corrugated or solid cardboard.
  • a compressed air source is advantageously provided, which is designed to provide a compressed gas pressure in the range from approximately 2.5 bar to approximately 7 bar. It is particularly preferred if the compressed air source is designed to provide a compressed gas pressure of approximately 5 bar.
  • Such a pressure gas pressure has proven to be advantageous in order to be able to achieve a drop size of the liquid mixture which is particularly advantageous for a rapid penetration of the liquid mixture into the surface of the corrugated cardboard and to influence the kinetic energy of the drops in such a way that the drops of the liquid mixture quickly into the surface of corrugated cardboard.
  • a further advantageous embodiment of the device provides that the device has a device for arranging the corrugated cardboard in a spraying position, the nozzle outlet of the two-substance nozzle being arranged such that it is at a distance from an upper side and / or at a point when the corrugated cardboard is in the spraying position Bottom of the corrugated cardboard is arranged from about 3 to 8 mm.
  • a distance from the nozzle outlet of the two-substance nozzle to an upper side and / or lower side of the corrugated cardboard has proven to be advantageous in order to avoid too large a width of the droplet jet reaching the corrugated cardboard and thus to soften the corrugated cardboard in the edge regions of a crack, perforation or crease line to be produced avoid.
  • the device for arranging the corrugated cardboard in a spraying position can be designed, for example, as a plate-shaped support or as transport rollers.
  • the nozzle outlet is advantageously arranged at an angle of approximately 45 ° to a plane arranged parallel to a direction of transport of the corrugated cardboard.
  • Figure 1 shows a blank of a single-wall corrugated cardboard 12, into which a plurality of creasing lines 14 have already been introduced in a preceding process step by means of the device 10.
  • the cutting of the single-wall corrugated cardboard 12 comprises an upper flat paper web 16, a lower flat paper web 18 and one corrugated paper web 20, which is arranged between the two flat paper webs 16, 18.
  • the device 10 has a device (not shown in the figures) for introducing the creasing lines 14, which comprises a rotatably mounted sonotrode and a rotatably mounted anvil or a second rotatably mounted sonotrode, so that the creasing line 14 can be introduced into the corrugated cardboard 12 with ultrasound support ,
  • the creasing lines it is also conceivable for the creasing lines to be introduced into the corrugated cardboard 12 with a mechanical creasing body without the use of ultrasound.
  • the device 10 has spray nozzles designed as two-substance nozzles 22, to which a compressed gas, in particular compressed air with a pressure in the range from approximately 0.5 bar to approximately 16 bar and a liquid mixture is fed via lines 24 and through which the liquid mixture is applied to the creasing lines 14 becomes.
  • the liquid mixture comprises at least 96% by volume of water and a maximum of 4% by volume of a surfactant, preferably at least 98% by volume of water and a maximum of 2% by volume of a surfactant.
  • Two two-substance nozzles 22 are arranged such that the liquid mixture can be applied to an upper side 25 of the corrugated cardboard 12, two two-substance nozzles 22 being arranged such that the liquid mixture can be applied to an underside 27 of the corrugated cardboard. Applying the liquid mixture to the upper and lower sides 25, 27 has proven to be particularly advantageous, it being possible to provide the liquid mixture only on the upper side 25 or only on the lower side 27 in the case of blanks coated on one side with sensitive paints.
  • a two-component nozzle 22 of the device 10 is shown in FIG Figure 2 shown in section.
  • the two-substance nozzle 22 has a spindle 24 with a first nozzle inlet 26 for the liquid mixture and a second nozzle inlet 28 for the pressurized gas, the liquid mixture being introduced into the two-substance nozzle 22 in the direction of arrow 30 and the pressurized gas in the direction of arrow 32 in FIG Two-component nozzle 22 is introduced.
  • the two-substance nozzle 22 has a nozzle outlet 34, from which a drop jet 36 emerges during operation of the device 10 or the two-substance nozzle 22, the drops of which have a diameter in the range from approximately 15 to approximately 25 ⁇ m, preferably with a diameter of approximately 20 ⁇ m.
  • a water mixture with a comparatively low surface tension can be provided due to the use of the surfactant.
  • the drops in the drop jet 36 can be applied to a blank of corrugated cardboard 12 with a comparatively high kinetic energy due to the use of the two-component nozzle 22 by the pressurized compressed gas, so that the comparatively small drops quickly penetrate into the porous surface of the blank made of corrugated cardboard 12 can and penetrate into the fibers of the blank of corrugated cardboard 12 and can soften the fibers.
  • a compressed air source 38 (cf. Figure 1 ) provided to provide a compressed gas pressure in the range of about 2.5 bar to about 7 bar, preferably from is designed around 5 bar.
  • a pressure gas pressure has proven to be advantageous in order to be able to achieve a drop size of the liquid mixture which is particularly advantageous for a rapid penetration of the liquid mixture into the surface of the corrugated cardboard 12 and to influence the kinetic energy of the drops in such a way that the drops of the liquid mixture quickly get into the Penetrate the surface of the corrugated cardboard.
  • FIGs 5 to 7 show an atomization process when using the two-substance nozzle according to Figure 2 with different pressurized gas pressures.
  • Figure 5 if only a compressed gas pressure of about 0.5 bar is used, this leads to extremely large droplets 40
  • a compressed gas pressure of about 5 bar is used for an optimal atomization result
  • Figure 7 drop 40 can be achieved, which can penetrate quickly into the surface of the corrugated cardboard 12 on the one hand due to the small drop size and on the other hand due to the high kinetic energy.
  • the device 10 also has a device for arranging the corrugated cardboard in a spraying position (without reference number), the nozzle outlet 34 of the two-substance nozzle 22 being arranged such that it is at a distance 42 from an upper side 25 and / when the corrugated cardboard 12 is in the spraying position. or an underside 27 of the corrugated cardboard 12 of approximately 3 to 8 mm is arranged. This distance is in Figure 3 can clearly be seen which according to an enlarged section of the device 10 Figure 1 shows.
  • Such a distance 42 of the nozzle outlet 34 of the two-substance nozzle 22 to the top 25 and / or bottom 27 of the corrugated cardboard 12 has proven to be advantageous in order to to avoid excessive width of the droplet jet 36 reaching the corrugated cardboard and thus to avoid softening of the corrugated cardboard in edge regions of a crack, perforation or crease line 14 to be produced.
  • the device for arranging the corrugated cardboard 12 in a spraying position can be designed, for example, as a plate-shaped support or as transport rollers.
  • Figure 4 shows a further section of the device 10 according to Figure 1 looking in the direction of the Figures 1 and 3 shown arrow 44.
  • the direction of transport of the corrugated cardboard 12 by the device 10 is indicated by the arrow 46.
  • the Figures 1 and 3 thus show the device 10 orthogonal to the transport direction shown by the arrow 46.
  • the nozzle outlet 34 or a central longitudinal axis 48 of the two-substance nozzle 22 is arranged at an angle 50 of approximately 45 ° to a plane 52 arranged parallel to a transport direction of the corrugated cardboard 12 or to the top side 25 of the corrugated cardboard 12.
  • the liquid mixture becomes orthogonal to the direction of transport of the corrugated cardboard 12 indicated by the arrow 46 in a width 54 (cf. Figure 3 ) of about 3 mm applied to the top 25 and / or bottom 27 of the corrugated cardboard 12, in particular sprayed on.
  • the blank made of corrugated cardboard 12 becomes so supple in the area of the crease lines 14, that a subsequent folding process along the creasing lines 14 takes place exactly along the predetermined creasing line 14, regardless of the area in which the waves are folded, as a result of which the blanks of corrugated cardboard 12 are folded exactly in the required manner and thus the fishtailing described at the beginning Effect is avoided.

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  • Mechanical Engineering (AREA)
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Claims (18)

  1. Procédé de pliage de découpes en carton ondulé ou plein (12) pour la fabrication de boîtes pliantes, comprenant les étapes suivantes:
    - application d'un mélange de liquides comprenant au moins 96 % en volume d'eau et au maximum 4 % en volume d'un tensio-actif, de préférence comprenant au moins 98 % en volume d'eau et au maximum 2 % en volume d'un tensio-actif, sur une fente, perforation ou ligne de rainure (14) réalisée auparavant dans une découpe de carton ondulé ou plein (12) ou application d'un mélange de liquides comprenant au moins 96 % en volume d'eau et au maximum 4 % en volume d'un tensio-actif, de préférence comprenant au moins 98 % en volume d'eau et au maximum 2 % en volume d'un tensio-actif, puis réalisation d'une fente, perforation ou ligne de rainure (14) dans une découpe en carton ondulé ou plein (12);
    - pliage de la découpe (12) le long de la fente, perforation ou ligne de rainure (14), caractérisé en ce que l'application du mélange de liquides est effectuée par pulvérisation du mélange de liquides à l'aide d'une buse double (22), la pulvérisation ayant lieu à l'aide d'un gaz sous pression.
  2. Procédé selon la revendication 1, caractérisé en ce que, en tant que gaz sous pression, de l'air ambiant est utilisé.
  3. Procédé selon la revendication 1 ou la revendication 2, caractérisé en ce que, lors de l'application du mélange de liquides, un jet de gouttes (36) comprenant des gouttes (40) est généré.
  4. Procédé selon la revendication 3, caractérisé en ce que les gouttes sont produites avec un diamètre de l'ordre d'environ 15 à environ 25 µm, de préférence avec un diamètre d'environ 20 µm.
  5. Procédé selon au moins l'une des revendications précédentes, caractérisé en ce que la réalisation de la ligne de rainure (14) a lieu par compression locale du carton plein ou de différentes couches du carton ondulé entre une sonotrode montée de manière rotative et une enclume montée de manière rotative resp. une deuxième sonotrode et par excitation de la zone comprimée du carton plein ou du carton ondulé avec des ultrasons.
  6. Procédé selon au moins l'une des revendications précédentes, caractérisé en ce que le mélange de liquides est appliqué sur un côté supérieur (25) de la découpe en carton ondulé ou plein (12) et/ou sur un côté inférieur (27) de la découpe en carton ondulé ou plein (12).
  7. Procédé selon au moins l'une des revendications précédentes, caractérisé en ce que le mélange de liquides est pulvérisé avec une pression de gaz de l'ordre d'environ 2,5 bar à environ 7 bar, de préférence avec une pression de gaz d'environ 5 bar.
  8. Procédé selon au moins l'une des revendications précédentes, caractérisé en ce que l'application du mélange de liquides a lieu par une sortie de buse (34) de la buse double (22), qui est disposée à une distance (42) d'un côté supérieur (25) et/ou d'un côté inférieur (27) du carton ondulé d'environ 3 mm à 8 mm.
  9. Procédé selon au moins l'une des revendications précédentes, caractérisé en ce que le mélange de liquides est appliqué, plus particulièrement pulvérisé, de manière orthogonale à une direction de transport du carton ondulé (12) sur une largeur (54) d'environ 3 mm sur un côté supérieur (25) et/ou sur un côté inférieur (27) du carton ondulé (12).
  10. Procédé selon au moins l'une des revendications précédentes, caractérisé en ce que le mélange de liquides est appliqué, plus particulièrement pulvérisé, avec un angle (50) d'environ 45° par rapport à un plan (52) disposé parallèlement à une direction de transport du carton ondulé (12), sur un côté supérieur (25) et/ou sur un côté inférieur (27) du carton ondulé (12).
  11. Procédé selon au moins l'une des revendications précédentes, caractérisé en ce que l'application, plus particulièrement la pulvérisation, du mélange de liquides a lieu de manière cadencée.
  12. Dispositif (10) pour l'exécution du procédé selon au moins l'une des revendications précédentes, plus particulièrement dispositif (10) pour le pliage de découpes en carton ondulé ou plein (12) pour la fabrication de boîtes pliantes, comprenant un dispositif pour l'application d'une fente, d'une perforation ou d'une ligne de rainure (14) dans un carton plein ou ondulé et au moins une buse double (22), qui est conçue et disposée de façon à ce qu'un mélange de liquides comprenant au moins 96 % en volume d'eau et au maximum 4 % en volume d'un tensio-actif, de préférence comprenant au moins 98 % en volume d'eau et au maximum 2 % en volume d'un tensio-actif, puisse être appliqué sur la fente, perforation ou ligne de rainure (14), auparavant réalisée dans la découpe, par pulvérisation à l'aide d'un gaz sous pression ou qui est conçue et disposée de façon à ce qu'un mélange de liquides comprenant au moins 96 % en volume d'eau et au maximum 4 % en volume d'un tensio-actif, de préférence comprenant au moins 98 % en volume d'eau et au maximum 2 % en volume d'un tensio-actif, puisse être appliqué sur la découpe en carton ondulé ou plein, avant la réalisation d'une fente, perforation ou ligne de rainure (14), par pulvérisation à l'aide d'un gaz sous pression.
  13. Dispositif (10) selon la revendication 12, caractérisé en ce que le dispositif de réalisation de la fente, perforation ou ligne de rainure (14) comprend une sonotrode montée de manière rotative et une enclume montée de manière rotative resp. une deuxième sonotrode.
  14. Dispositif (10) selon la revendication 12 ou 13, caractérisé en ce que la buse double (22) comprend une entrée de buse (26) pour le mélange de liquides et une deuxième entrée de buse (28) pour un gaz sous pression et en ce que la buse double (22) comprend une sortie de buse (34) pour le liquide pulvérisé.
  15. Dispositif (10) selon au moins l'une des revendications 12 à 14, caractérisé en ce qu'au moins une buse double (22) est prévue, qui est disposée de façon à ce que le mélange de liquides puisse être appliqué sur un côté supérieur (25) de la découpe en carton ondulé ou plein (12) et/ou en ce qu'au moins une buse double (22) est prévue, qui est disposée de façon à ce que le mélange de liquides puisse être appliqué sur un côté inférieur (27) de la découpe en carton ondulé ou plein (12).
  16. Dispositif (10) selon au moins l'une des revendications 12 à 15, caractérisé en ce qu'une source d'air comprimé (38) est prévue, qui est conçue pour la mise à disposition d'une pression de gaz de l'ordre d'environ 2,5 bar à environ 7 bar.
  17. Dispositif (10) selon au moins l'une des revendications 14 à 16, caractérisé en ce que le dispositif (10) comprend un dispositif pour la disposition du carton ondulé (12) dans une position de pulvérisation, la sortie de buse (34) de la buse double (22) étant disposée de façon à ce que, lorsque le carton ondulé (12) se trouve dans la position de pulvérisation, elle soit disposée à une distance (42), d'un côté supérieur (25) et/ou d'un côté inférieur (27) du carton ondulé (12), d'environ 3 à 8 mm.
  18. Dispositif (10) selon au moins l'une des revendications 14 à 17, caractérisé en ce que la sortie de buse (34) est disposée avec un angle (50) d'environ 45° par rapport à un plan (52) disposé parallèlement à une direction de transport du carton ondulé (12).
EP16785398.5A 2016-01-14 2016-10-14 Procédé et dispositif de pliage de carton ondulé Active EP3402662B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016100570.3A DE102016100570A1 (de) 2016-01-14 2016-01-14 Verfahren und Vorrichtung zur Faltung von Wellpappe
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PCT/EP2016/074645 WO2017121503A1 (fr) 2016-01-14 2016-10-14 Procédé et dispositif de pliage de carton ondulé

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CN109532100B (zh) * 2019-01-15 2020-02-18 浙江骏驰纸制品有限公司 一种瓦楞纸折角装置
KR102696531B1 (ko) 2019-07-11 2024-08-19 봅스트 리옹 폴딩된 박스를 형성하게 되는 골판지 블랭크를 폴딩하는 방법
CN111923491B (zh) * 2020-06-28 2022-06-28 浙江华熠印刷科技有限公司 一种纸箱印刷用压线软化工艺

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DE579710C (de) * 1932-04-14 1933-06-30 Saechsische Cartonnagen Maschi Verfahren und Vorrichtung zur Herstellung von Elementhuelsen
US3270628A (en) * 1962-09-20 1966-09-06 Specialty Equipment Corp Universal box folding machine
JP5333922B2 (ja) * 2009-04-30 2013-11-06 レンゴー株式会社 段ボールの罫割れ防止加工方法
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