EP3402662A1 - Procédé et dispositif de pliage de carton ondulé - Google Patents

Procédé et dispositif de pliage de carton ondulé

Info

Publication number
EP3402662A1
EP3402662A1 EP16785398.5A EP16785398A EP3402662A1 EP 3402662 A1 EP3402662 A1 EP 3402662A1 EP 16785398 A EP16785398 A EP 16785398A EP 3402662 A1 EP3402662 A1 EP 3402662A1
Authority
EP
European Patent Office
Prior art keywords
corrugated
liquid mixture
volume
blank
board
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
EP16785398.5A
Other languages
German (de)
English (en)
Other versions
EP3402662B1 (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
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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 of
  • Blanks of corrugated or solid board for the manufacture of folding cartons The invention further relates to a device for carrying out the method.
  • blanks are used which are provided with score lines, scratches or perforations along which the blanks can be folded or kinked thereby to e.g. formed with a bottom surface, a lateral surface and a top surface
  • Corrugated cardboard for example, comprise two flat paper webs, between which there is a corrugated paper web.
  • a corrugated board is also referred to as single-layer or single-walled corrugated board, wherein a two-layered or two-walled corrugated board comprises two externally arranged planar paper webs, an internally arranged planar paper web and two corrugated paper webs, which respectively
  • the corrugated board is arranged such that in the lateral surfaces of the cartons, the waves of the
  • the problem that folding does not occur exactly along a given line is also referred to in the art as fish tailing and gap fluctuation.
  • the problem of fish tailing and gap fluctuation can occur more intensively in the case of two-wave or three-wave corrugated boards and with a fluctuating quality of the materials used for the production of the corrugated cardboard, which leads to problems with respect to dimensional tolerances and in the case of
  • the invention is therefore based on the object
  • the method comprises the steps: applying, in particular spraying, a
  • 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 not more than 2% by volume of surfactant, on a previously made into a blank of corrugated or Solid board incised crevice, perforation or crease line; or applying, in particular spraying, a
  • a liquid mixture comprising at least 96% by volume of water and not more than 4% by volume of a surfactant, preferably comprising at least 98% by volume of water and not more than 2% by volume of a surfactant and subsequent introduction of a crack,
  • liquid mixture is particularly advantageous because due to the addition of the surfactant, the surface tension of the liquid mixture can be reduced so that the liquid mixture can penetrate faster in pores and thus in the fibers of the blank made of solid or corrugated board. Thus, swelling and softening of the fibers in the region of the score, perforation or crease line can be accelerated.
  • Two-fluid nozzle takes place, wherein the atomization is effected by a compressed gas.
  • the compressed gas is advantageously at a pressure in the range of about 0.5 bar to about 100 bar, preferably in the range of about 0.5 bar to about 16 bar in the
  • Two-fluid nozzle introduced, wherein the liquid mixture is added without pressure.
  • the surfactant in the liquid mixture By the surfactant in the liquid mixture, the surface tension in the liquid mixture can be reduced, whereby the use of the two-fluid nozzle due to the then low surface tension a
  • Corrugated cardboard penetrate and soften this.
  • the small drops of the droplet jet generated thereby can be accelerated in such a way due to the compressed gas under pressure by means of the two-fluid nozzle, that the drops on a surface of solid or corrugated cardboard with a relatively high kinetic energy
  • the liquid mixture is applied to a top of the blank of corrugated or solid board and / or an underside of the blank of corrugated or solid board.
  • An application of the liquid mixture on the top and bottom has proved to be particularly advantageous, which may be provided on one side coated blanks, the liquid mixture only on the top or only on the bottom
  • liquid mixture is atomized with a pressure gas pressure in the range of about 2.5 bar to about 7 bar, preferably with a compressed gas pressure of about 5 bar. Too large drops only penetrate one
  • the kinetic energy of the droplets can be influenced in such a way that the droplets of the liquid mixture penetrate rapidly into the surface of the corrugated cardboard.
  • the liquid mixture at an angle of about 45 ° to a parallel to a
  • Liquid mixture can be avoided. It has been shown that an orthogonal impingement of the liquid mixture on the corrugated cardboard on the one hand to bursting of the
  • bursted droplets can lead, thereby also the edge zone of the crack, perforation or crease line can be softened and thus also the above
  • the liquid mixture is clocked. It can be provided that the spraying is interrupted for a short time, so that the Liquid mixture is applied only in the area of the score, perforation or score line. To the timing of this
  • Two-fluid nozzle is designed.
  • the apparatus comprises means for introducing a score, perforation or score line into a solid or
  • Corrugated board and at least one two-substance nozzle which is designed and arranged such that a liquid mixture comprising at least 96% by volume of water and not more than 4% by volume of a surfactant, preferably comprising at least 98% by volume of water and not more than 2% by volume of a Surfactants on the previously introduced in the cutting crack, perforation or
  • Rillline can be applied by sputtering or is designed and arranged such that a
  • a liquid mixture comprising at least 96% by volume of water and not more than 4% by volume of a surfactant, preferably comprising at least 98% by volume of water and not more than 2% by volume of a surfactant before introducing a crack, perforation or
  • Rillline can be applied to the blank of corrugated or solid board by sputtering.
  • the device for introducing the crevice, perforation or crease line comprises a rotatably mounted sonotrode and a rotatably mounted anvil or a second sonotrode.
  • the means for introducing the crevice, perforation or crease line comprises a mechanical creasing member which is used to create a creasing line without the use of
  • the two-fluid nozzle has a first nozzle inlet for the liquid mixture and a second nozzle inlet for a compressed gas, and that the two-fluid nozzle has a nozzle outlet for the
  • Two-fluid nozzle is provided, which is arranged such that the liquid mixture on an upper side of the
  • Blank of corrugated or solid board can be applied and / or if at least one two-fluid nozzle is provided, which is arranged such that the liquid mixture can be applied to a bottom of the blank of corrugated or solid board.
  • a compressed air source which is designed to provide a compressed gas pressure in the range of about 2.5 bar to about 7 bar. It is particularly preferred if the compressed air source is designed to provide a compressed gas pressure of about 5 bar.
  • a compressed gas pressure has proven to be advantageous in order to achieve a particularly advantageous drop size of the liquid mixture for a rapid penetration of the liquid mixture into the surface of the corrugated and to the kinetic energy of the droplets so
  • a further advantageous embodiment of the device provides that the device is a device for
  • Corrugated cardboard at a distance from a top and / or a bottom of the corrugated cardboard of about 3 to 8 mm
  • the device for arranging the corrugated board in a spraying position can be used, for example, as a plate-shaped support or as transport rollers
  • the nozzle outlet is arranged at an angle of approximately 45 ° to a plane arranged parallel to a transport direction of the corrugated cardboard.
  • Figure 1 is a schematic view of a portion of a device according to the invention for folding blanks from corrugated or solid board for the production of
  • FIG. 3 shows an enlarged section of the device according to FIG. 1;
  • FIG. 4 shows a further enlarged detail of FIG
  • FIG. 5 shows an atomization process when using the two-substance nozzle according to FIG. 2 with a compressed gas pressure of approximately 0.5 bar;
  • Figure 6 shows a sputtering process when using the two-fluid nozzle according to Figure 2 with a pressure gas pressure of about 2.5 bar;
  • Figure 7 shows a sputtering process when using the two-fluid nozzle according to Figure 2 with a pressure gas pressure of about 5 bar.
  • FIG. 1 shows a blank of a single-walled corrugated cardboard 12, in which in a preceding process step by means of the device 10 already a plurality of
  • single-shaft corrugated cardboard 12 comprises an upper flat paper web 16, a lower flat paper web 18, and a 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 score lines 14, which has a rotatably mounted sonotrode and a rotatably mounted anvil or a second rotatably mounted sonotrode
  • the device 10 has spray nozzles formed as two-substance nozzles 22, which via lines 24 a compressed gas, in particular compressed air at a pressure in the range of about 0.5 bar to about 16 bar and a liquid mixture
  • the liquid mixture comprises at least 96% by volume of water and not more than 4% by volume of a surfactant, preferably at least 98% by volume of water and not more than 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, wherein two two-substance nozzles 22 are arranged such that the liquid mixture onto an underside 27 of the
  • Corrugated board can be applied.
  • Liquid mixture on the top and bottom 25, 27 has proved to be particularly advantageous, being coated on one side with sensitive paints
  • Blanks can be provided to apply the liquid mixture only on the top 25 or only on the bottom 27.
  • a two-fluid nozzle 22 of the device 10 is shown in section in FIG.
  • the two-fluid nozzle 22 has a spindle 24 with a first nozzle inlet 26 for the
  • Liquid mixture and a second nozzle inlet 28 for the compressed gas wherein the liquid mixture is introduced in the direction of arrow 30 in the two-fluid nozzle 22 and wherein the compressed gas in the direction of arrow 32 in the
  • Two-fluid nozzle 22 is initiated.
  • the two-substance nozzle 22 has a nozzle outlet 34, from which, during operation of the device 10 or the two-substance nozzle 22, a droplet jet 36 emerges, the droplets of which discharge
  • the drops of the droplet jet 36 can due to the
  • kinetic energy can be applied to a blank of corrugated cardboard 12, so that the comparatively small drops can penetrate quickly into the porous surface of the blank of corrugated cardboard 12 and penetrate there into the fibers of the blank of corrugated cardboard 12 and soften the fibers.
  • a compressed air source 38 (see FIG. 1
  • a compressed gas pressure in the range of about 2.5 bar to about 7 bar, preferably of about 5 bar is designed.
  • Such a compressed gas pressure has proven to be advantageous in order for a particularly advantageous drop size of the 12 for a rapid penetration of the liquid mixture into the surface of the corrugated cardboard
  • FIGS. 5 to 7 show a sputtering process when using the two-substance nozzle according to FIG. 2 with different pressure gas pressures.
  • a compressed gas pressure of about 0.5 bar is used, this leads to extremely large drops 40, wherein in the in Figure 6
  • a compressed gas pressure of about 2.5 bar is used.
  • a compressed gas pressure of about 5 bar is used, whereby the drops 40 shown in FIG. 7 can be achieved, which on the one hand can rapidly penetrate into the surface of the corrugated cardboard 12 due to the small droplet size and on the other hand due to the high kinetic energy.
  • the device 10 further comprises a device for
  • Sprung position corrugated board 12 is arranged at a distance 42 to a top 25 and / or a bottom 27 of the corrugated cardboard 12 of about 3 to 8 mm.
  • This distance can be clearly seen in FIG. 3, which shows an enlarged section of the device 10 according to FIG.
  • Such a distance 42 of the nozzle outlet 34 of the two-fluid nozzle 22 to the top 25 and / or bottom 27 of the corrugated cardboard 12 has proved to be advantageous to a To avoid too large a width of the corrugated cardboard reaching drop jet 36 and thus to avoid softening of the corrugated cardboard in the edge regions of a produced score, perforation or score line 14.
  • 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.
  • FIG. 4 shows a further detail of the device 10 according to FIG. 1 as viewed in the direction of the arrow 44 shown in FIGS. 1 and 3.
  • the transport direction of the corrugated cardboard 12 is identified by the device 10 by the arrow 46.
  • FIGS. 1 and 3 thus show the device 10 orthogonal to the arrow 46
  • the liquid mixture is applied, in particular sprayed, orthogonally to the transport direction of the corrugated cardboard 12, indicated by the arrow 46, in a width 54 (see Figure 3) of approximately 3 mm on the upper side 25 and / or lower side 27 of the corrugated board 12.
  • Corrugated board 12 in the area of score lines 14 so pliable, that a subsequent folding process along the creasing lines 14, regardless of which region of the waves a convolution is performed, takes place exactly along the predetermined crease line 14, whereby the blanks of corrugated cardboard 12 are folded exactly in the required manner and thus the fishtailing described above. Effect is avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)

Abstract

L'invention concerne un procédé de pliage de flans constitués de carton ondulé ou de carton compact pour la fabrication de boîtes pliantes, le procédé comportant les étapes consistant à : appliquer un mélange liquide comportant au moins 96 % en volume d'eau et au maximum 4 % en volume d'un tensioactif, de préférence comportant au moins 98 % en volume d'eau et au maximum 2 % en volume d'un tensioactif, sur une fente, perforation ou ligne formant rainure préalablement ménagée dans un flan constitué de carton ondulé ou de carton compact, ou appliquer un mélange liquide comportant au moins 96 % en volume d'eau et au maximum 4 % en volume d'un tensioactif, de préférence comportant au moins 98 % en volume d'eau et au maximum 2 % en volume d'un tensioactif, et ensuite ménager une fente, perforation ou ligne formant rainure dans un flan constitué de carton ondulé ou de carton compact ; et plier le flan le long de la fente, perforation ou ligne formant rainure.
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
DE102016114660.9A DE102016114660A1 (de) 2016-08-08 2016-08-08 Verfahren und Vorrichtung zur Faltung von Wellpappe
PCT/EP2016/074645 WO2017121503A1 (fr) 2016-01-14 2016-10-14 Procédé et dispositif de pliage de carton ondulé

Publications (2)

Publication Number Publication Date
EP3402662A1 true EP3402662A1 (fr) 2018-11-21
EP3402662B1 EP3402662B1 (fr) 2020-01-29

Family

ID=57199966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16785398.5A Active EP3402662B1 (fr) 2016-01-14 2016-10-14 Procédé et dispositif de pliage de carton ondulé

Country Status (2)

Country Link
EP (1) EP3402662B1 (fr)
WO (1) WO2017121503A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109109378A (zh) * 2018-08-22 2019-01-01 江苏省海门中等专业学校 一种防止纸箱爆裂的自动增湿功能装置及操作工艺
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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
AT512357B1 (de) * 2012-01-12 2013-09-15 Flatz Verpackungen Styropor Gmbh Verfahren zur faltung von aus wellpappe bestehenden zuschnitten für die herstellung von faltschachteln und anlage hierfür

Also Published As

Publication number Publication date
EP3402662B1 (fr) 2020-01-29
WO2017121503A1 (fr) 2017-07-20

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