EP0167717A1 - Method of making multilayer paper bags with an echelon closure flap - Google Patents

Method of making multilayer paper bags with an echelon closure flap Download PDF

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Publication number
EP0167717A1
EP0167717A1 EP85103892A EP85103892A EP0167717A1 EP 0167717 A1 EP0167717 A1 EP 0167717A1 EP 85103892 A EP85103892 A EP 85103892A EP 85103892 A EP85103892 A EP 85103892A EP 0167717 A1 EP0167717 A1 EP 0167717A1
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EP
European Patent Office
Prior art keywords
paper
cut
bags
closure flap
layers
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
EP85103892A
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German (de)
French (fr)
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EP0167717B1 (en
Inventor
Gustav Kuckhermann
Per-Ulf Hansson
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.)
Icoma Packtechnik GmbH
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Icoma Packtechnik 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
Application filed by Icoma Packtechnik GmbH filed Critical Icoma Packtechnik GmbH
Publication of EP0167717A1 publication Critical patent/EP0167717A1/en
Application granted granted Critical
Publication of EP0167717B1 publication Critical patent/EP0167717B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/18—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls

Definitions

  • the invention relates to a method for producing paper bags, in particular multilayer gusseted bags, with a staggered closure flap.
  • Paper bags with staggered flaps are made on relatively expensive machines. Perforation and tear-off devices are required for each individual paper layer. The relatively high level of mechanical engineering is nevertheless undertaken because paper sacks with a staggered cut are technically advantageous, in particular because of the low material consumption.
  • the invention has for its object to provide a method for producing paper bags with a staggered closure flap, in which a smooth cutting machine can be used, the material consumption is reduced and the production of a paper bag with only one fold is possible.
  • the solution according to the invention is achieved in that the paper tube is cut off smoothly, at least the outer layer is slit by an amount along the longitudinally extending outer folded edges, then at least the outer layer is bent back transversely to the longitudinal direction of the sack and finally the non-bent back paper layers are cut back.
  • the cutting back be carried out by means of knives which can be brought into engagement from different sides.
  • the method according to the invention permits the production of a paper sack with a staggered closure flap, using largely smooth-cutting machines. Inexpensive additional equipment is sufficient to turn the smoothly cut sack into a paper sack with a staggered closure to make it work, i.e. a paper sack that has all the advantages.
  • the paper bag has an outer layer 1 or 1a.
  • the outer layer 1 is connected to the inner layer 2 via a cross bond 3.
  • the outer layer 1 a lying opposite the first outer layer 1 is also connected to the inner layer 2 a behind it by means of a transverse adhesive 3.
  • the two inner gussets are designated by 8, while the outer gussets are designated by 9 and 9a.
  • the paper layers 1 and 2 glued together are provided with the longitudinal section 7.
  • the outer sides of the paper layers 1 a lie on top of one another and are glued to one another via the adhesive point 6.
  • the paper layer 2 glued transversely to the first outer layer 1 overlaps the glue point 6 and the inner paper layer 2, which is glued transversely to the first outer layer 1, in turn lies on the outside of the paper layer 1a and is connected to this paper layer via the glue point 6a.
  • FIG. 4 shows a development of the embodiment according to FIG. 3, in which the second outer layer 1 a is also folded over twice with the inner layer 2 a connected to it.
  • the outer, simply folded ends of the paper layers 1, 2 are glued to the second outer layer 1a via the adhesive point 6a.
  • the inner ends of the paper layers 1 a, 2 a are connected to the ends of the paper layers 1, 2 by means of a first adhesive point 6 before the second fold, and inwardly to the second outer layer 1 a by a second adhesive point 6 behind the second fold.
  • FIGS. 5 to 6 show the cutting back process.
  • the paper layers 1 and 2 are slotted into the area of the counter holder 11. They are bent away from the paper layers 2a and 1a into the position according to FIG. 6. This can be done using a suction tape, guide rod or other elements. After folding back with the help of the separating knife 12 and counter knife 13 Cutting device cut off the area of the paper layers 1a and 2a which is dash-dotted in FIG.

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

Abstract

1. Process for producing paper bags, especially multi-layer gusseted bags, with a staggered closing flap, from a paper tube which, if appropriate, is multi-layer (1, 1a; 2, 2a), characterized in that the paper tube is cut off smooth and, starting from the end edge (4) thereby formed, is slit along the longitudinal outer folding edges (9) according to the length of the closing flap, and subsequently one of the tabs thereby formed which, if appropriate, is multi-layered (1, 2), is bent back transversely relative to the longitudinal direction of the bag, and the other tab is cut back.

Description

Die Erfindung betrifft ein Verfahren zum Herstellen von Papiersäcken, insbesondere mehrlagigen Seitenfaltensäcken, mit einer gestaffelten Verschlußklappe.The invention relates to a method for producing paper bags, in particular multilayer gusseted bags, with a staggered closure flap.

Papiersäcke mit gestaffelten Verschlußklappen werden auf relativ teuren Maschinen hergestellt. Es sind Perforations- und Abreißeinrichtungen für jede einzelne Papierlage erforderlich. Der relativ hohe maschinentechnische Aufwand wird dennoch vorgenommen, weil Papiersäcke mit Staffelschnitt insbesondere wegen des geringen Materialverbrauchs technisch vorteilhaft sind.Paper bags with staggered flaps are made on relatively expensive machines. Perforation and tear-off devices are required for each individual paper layer. The relatively high level of mechanical engineering is nevertheless undertaken because paper sacks with a staggered cut are technically advantageous, in particular because of the low material consumption.

Demgegenüber sind die technischen Einrichtungen zur Herstellung von Papiersäcken mit Glattschnittrand wesentlich preisgünstiger. Der Glattschnitt besitzt jedoch verschiedene technische Nachteile, insbesondere erfordert er einen wesentlich höheren Materialverbrauch. Bei Glattschnittsäcken sind stets zwei Falzungen nötig. Papiersäcke mit Glattschnitt können in den meisten Papiersackfabriken hergestellt werden, da dort üblicherweise Glattschnitteinrichtungen vorhanden sind.In contrast, the technical facilities for the production of paper bags with a smooth cut edge are much cheaper. However, the smooth cut has various technical disadvantages, in particular it requires a significantly higher material consumption. Two folds are always required for smooth-cut bags. Paper bags with a smooth cut can be made in most paper bag factories because they usually have smooth cut facilities.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Herstellen von Papiersäcken mit einergestaffelten Verschlußklappe zu schaffen, bei dem eine Glattschnittmaschine verwendbar ist, der Materialverbrauch gesenkt wird und die Herstellung eines Papiersacks mit lediglich einer Falzung möglich ist.The invention has for its object to provide a method for producing paper bags with a staggered closure flap, in which a smooth cutting machine can be used, the material consumption is reduced and the production of a paper bag with only one fold is possible.

Die Lösung erfolgt erfindungsgemäß dadurch, daß der Papierschlauch glatt abgeschnitten, mindestens die Außenlage entlang der längs verlaufenden äußeren Falzkanten um einen Betrag geschlitzt, anschließend mindestens die Außenlage quer zur Sacklängsrichtung zurückgebogen und schließlich die nicht zurückgebogenen Papierlagen zurückgeschnitten werden.The solution according to the invention is achieved in that the paper tube is cut off smoothly, at least the outer layer is slit by an amount along the longitudinally extending outer folded edges, then at least the outer layer is bent back transversely to the longitudinal direction of the sack and finally the non-bent back paper layers are cut back.

Dabei hat es sich als zweckmäßig erwiesen, daß die nicht zurückgebogenen Papierlagen bis zum Schlitzende zurückgeschnitten werden.It has proven to be expedient for the paper layers which have not been bent back to be cut back to the end of the slot.

Erfindungsgemäß wird ferner vorgeschlagen, daß das Zurückschneiden mittels von unterschiedlichen Seiten in Eingriff bringbarer Messer erfolgt.According to the invention, it is further proposed that the cutting back be carried out by means of knives which can be brought into engagement from different sides.

Das erfindungsgemäße Verfahren erlaubt die Herstellung eines Papiersacks mit gestaffelter Verschlußklappe unter weitgehender Verwendung von Glattschnittmaschinen. Es genügen preisgünstige Zusatzeinrichtungen, um aus dem glatt abgeschnittenen Sack einen Papiersack mit gestaffelter Verschlußklappe zu machen, also einen Papiersack, der alle Vorteile.eines Staffelsacks aufweist, der sonst nur mit einem wesentlich größeren maschinentechnischen Aufwand erzeugt werden kann.The method according to the invention permits the production of a paper sack with a staggered closure flap, using largely smooth-cutting machines. Inexpensive additional equipment is sufficient to turn the smoothly cut sack into a paper sack with a staggered closure to make it work, i.e. a paper sack that has all the advantages.

Nachstehend werden bevorzugte Ausführungsformen der Erfindung anhand der Zeichnung beschrieben. Es zeigen:

  • Figur 1 - eine perspektivische Ansicht eines Endes eines Pabierschlauchs, der nach dem erfindungsgemäßen Verfahren hergestellt wurde,
  • Figur 2 - einen Längsschnitt durch das in Figur 1 dargestellte Papiersackende im flachgelegten Zustand,
  • Figur 3 - die Endausbildung des flachgelegten Papiersacks in einer ersten Ausführung mit einer Falz,
  • Figur 4 - die Endausbildung des Papiersacks mit zwei Falzungen,
  • Figur 5 - einen Längsschnitt durch das glattgeschnittene Ende eines flachgelegten Papiersacks mit seitlich geschlitzten Falzkanten,
  • Figur 6 - das Ende des flachgelegten Papiersacks mit einem hochgeklappten Laschenbereich,
  • Figur 7 - eine schematische Darstellung des Zurückschneidens der nicht zurückgebogenen Papierlagen.
Preferred embodiments of the invention are described below with reference to the drawing. Show it:
  • Figure 1 - a perspective view of one end of a b ierschlauchs Pa, prepared by the inventive method,
  • FIG. 2 shows a longitudinal section through the paper bag end shown in FIG. 1 in the flat state,
  • Figure 3 - the final formation of the flattened paper bag in a first embodiment with a fold,
  • Figure 4 - the final formation of the paper bag with two folds,
  • 5 shows a longitudinal section through the smoothly cut end of a flat paper bag with laterally slit fold edges, FIG.
  • FIG. 6 - the end of the flat paper sack with a flap area that has been folded up,
  • Figure 7 - a schematic representation of the cutting of the back non-drooping Papierla g s.

Der Papiersack besitzt eine Außenlage 1 bzw. 1a. Die Außenlage 1 ist mit der Innenlage 2 über eine Querklebung 3 verbunden. Die der ersten Außenlage 1 gegenüberliegende Außenlage 1a ist mit der dahinterliegenden Innenlage 2a ebenfalls über eine Querklebung 3 verbunden. Mit 8 sind die beiden inneren Seitenfalten bezeichnet, während mit 9 und 9a die äußeren Seitenfalten bezeichnet sind. Entlang der äußeren Seitenfalten 9 sind die miteinander verklebten Papierlagen 1 und 2 mit dem Längsschnitt 7 versehen.The paper bag has an outer layer 1 or 1a. The outer layer 1 is connected to the inner layer 2 via a cross bond 3. The outer layer 1 a lying opposite the first outer layer 1 is also connected to the inner layer 2 a behind it by means of a transverse adhesive 3. The two inner gussets are designated by 8, while the outer gussets are designated by 9 and 9a. Along the outer side folds 9, the paper layers 1 and 2 glued together are provided with the longitudinal section 7.

Aus Figur 2 ist die Endausbildung des in Figur 1 dargestellten Papiersacks im flachgelegten Zustand ersichtlich. Die Stirnkante 4 der miteinander quer verklebten Papierlagen 1 und 2 liegt um.einen Betrag a vor der Stirnkante 5 der miteinander über eine Querklebung 3 verbundenen Papierlagen 1a und 2a.From Figure 2, the final formation of the paper bag shown in Figure 1 can be seen in the flat state. The front edge 4 of the paper layers 1 and 2 glued transversely to one another lies around an amount a in front of the front edge 5 of the paper layers 1a and 2a connected to one another by means of cross-gluing 3.

Bei der Ausführungsform gemäß Figur 3 sind sämtliche Papierlagen um die Querfalzlinie 10 umgefalzt.In the embodiment according to FIG. 3, all layers of paper are folded over the transverse fold line 10.

Im Endbereich liegen einerseits die Außenseiten der Papierlagen 1a aufeinander und sind über die Klebestelle 6 miteinander verklebt. Die mit der ersten Außenlage 1 quer verklebte Papierlage 2 übergreift die Klebestelle 6 und die innere Papierlage 2, die mit der ersten Außenlage 1 quer verklebt ist, liegt ihrerseits auf der Außenseite der Papierlage 1a auf und ist mit dieser Papierlage über die Klebestelle 6a verbunden.In the end region, on the one hand, the outer sides of the paper layers 1 a lie on top of one another and are glued to one another via the adhesive point 6. The paper layer 2 glued transversely to the first outer layer 1 overlaps the glue point 6 and the inner paper layer 2, which is glued transversely to the first outer layer 1, in turn lies on the outside of the paper layer 1a and is connected to this paper layer via the glue point 6a.

Figur 4 zeigt eine Weiterbildung der Ausführung nach Figur 3, bei der zusätzlich die zweite Außenlage 1a mit der mit ihr verbundenen Innenlage 2a doppelt umgefalzt ist. Die außenliegenden, einfach umgefalzten Enden der Papierlagen 1, 2 sind über die Klebestelle 6a mit der zweiten Außenlage 1a verklebt. Die innenliegenden Enden der Papierlagen 1a, 2a sind vor der zweiten Falzung nach außen hin mit den Enden der Papierlagen 1, 2 über eine erste Klebestelle 6 und hinter der zweiten Falzung nach innen hin mit der zweiten Außenlage 1a über eine zweite Klebestelle 6 verbunden.FIG. 4 shows a development of the embodiment according to FIG. 3, in which the second outer layer 1 a is also folded over twice with the inner layer 2 a connected to it. The outer, simply folded ends of the paper layers 1, 2 are glued to the second outer layer 1a via the adhesive point 6a. The inner ends of the paper layers 1 a, 2 a are connected to the ends of the paper layers 1, 2 by means of a first adhesive point 6 before the second fold, and inwardly to the second outer layer 1 a by a second adhesive point 6 behind the second fold.

In Figuren 5 bis 6 ist der Ablauf des Zurückschneidens dargestellt. Die Papierlagen 1 und 2 sind bis in den Bereich des Gegenhalters 11 geschlitzt. Sie werden von den Papierlagen 2a und 1a weggebogen bis in die Position gemäß Figur 6. Dies kann mittels Saugband, Leitstab oder anderer Elemente erfolgen. Nach dem Zurückklappen wird mit Hilfe der aus Trennmesser 12 und Gegenmesser 13 bestehenden Schneideeinrichtung der in Figur 7 strich-punktierte Bereich der Papierlagen 1a und 2a abgeschnitten.FIGS. 5 to 6 show the cutting back process. The paper layers 1 and 2 are slotted into the area of the counter holder 11. They are bent away from the paper layers 2a and 1a into the position according to FIG. 6. This can be done using a suction tape, guide rod or other elements. After folding back with the help of the separating knife 12 and counter knife 13 Cutting device cut off the area of the paper layers 1a and 2a which is dash-dotted in FIG.

Claims (3)

1. Verfahren zum Herstellen von Papiersäcken, insbesondere mehrlagigen Seitenfaltensäcken, mit einer gestaffelten Verschlußklappe,
dadurch gekennzeichnet,
daß der Papierschlauch glatt abgeschnitten, mindestens die Außenlagen (1 und evtl. 2) entlang der längs verlaufenden äußeren Falzkanten (9) geschlitzt, anschließend mindestens die Außenlage (1 und evtl. 2) quer zur Sacklängsrichtung zurückgebogen und die nicht zurückgebogenen Papierlagen (1a; 2a) zurückgeschnitten werden.1. A process for producing paper bags, in particular multilayer gusseted bags, with a staggered closure flap,
characterized,
that the paper tube is cut off smoothly, at least the outer layers (1 and possibly 2) are slit along the longitudinal outer folding edges (9), then at least the outer layer (1 and possibly 2) is bent back transversely to the longitudinal direction of the bag and the paper layers (1a; 2a) are returned g esch itten. 2. Verfahren nach Anspruch 1,
dadurch gekennzeichnet,
daß die nicht zurückgebogenen Papierlagen (1a; 2a) bis zum Ende des Schlitzes (7) zurückgeschnitten werden.2. The method according to claim 1,
characterized,
that the non-bent back paper layers (1a; 2a) are cut back to the end of the slot (7). 3. Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß das Zurückschneiden mittels von unterschiedlichen Seiten des Papierschlauchs in Eingriff bringbare Messer (12 und 13) erfolgt.3. The method according to claim 1 or 2,
characterized,
that the cutting is carried out by means of knives (12 and 13) which can be brought into engagement from different sides of the paper tube.
EP85103892A 1984-07-12 1985-04-01 Method of making multilayer paper bags with an echelon closure flap Expired EP0167717B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843425608 DE3425608A1 (en) 1984-07-12 1984-07-12 METHOD FOR PRODUCING MULTI-LAYER PAPER BAGS WITH STRAIGHTED CAP
DE3425608 1984-07-12

Publications (2)

Publication Number Publication Date
EP0167717A1 true EP0167717A1 (en) 1986-01-15
EP0167717B1 EP0167717B1 (en) 1987-07-22

Family

ID=6240410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85103892A Expired EP0167717B1 (en) 1984-07-12 1985-04-01 Method of making multilayer paper bags with an echelon closure flap

Country Status (2)

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EP (1) EP0167717B1 (en)
DE (2) DE3425608A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2216867A (en) * 1988-03-18 1989-10-18 Ward Sacks Limited Sacks
GB2279641A (en) * 1993-07-06 1995-01-11 Windmoeller & Hoelscher Multilayer sack or bag bottom

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1239906A (en) * 1967-09-19 1971-07-21 Robinson E S & A Ltd A method of making bags of paper or like sheet material
US4381107A (en) * 1980-07-28 1983-04-26 John W. Armiger Cutting and collating method and apparatus for tickets
EP0138028A1 (en) * 1983-09-08 1985-04-24 Mid America Machine Corporation Slitter assembly for double fold bottomer apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2951597A1 (en) * 1979-12-21 1981-07-09 Icoma Packtechnik GmbH, 7590 Achern Multilayer sealable paper bag has inner lining sealed - while closure flap is folded back to expose layers to heat

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1239906A (en) * 1967-09-19 1971-07-21 Robinson E S & A Ltd A method of making bags of paper or like sheet material
US4381107A (en) * 1980-07-28 1983-04-26 John W. Armiger Cutting and collating method and apparatus for tickets
EP0138028A1 (en) * 1983-09-08 1985-04-24 Mid America Machine Corporation Slitter assembly for double fold bottomer apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2216867A (en) * 1988-03-18 1989-10-18 Ward Sacks Limited Sacks
GB2216867B (en) * 1988-03-18 1990-04-25 Ward Sacks Limited Improvements in or relating to sacks
GB2279641A (en) * 1993-07-06 1995-01-11 Windmoeller & Hoelscher Multilayer sack or bag bottom
FR2708567A1 (en) * 1993-07-06 1995-02-10 Windmoeller & Hoelscher Multi-layer bag or sachet with bottom.
GB2279641B (en) * 1993-07-06 1997-05-14 Windmoeller & Hoelscher Multilayer sack or bag with bottom and method of forming same

Also Published As

Publication number Publication date
DE3560353D1 (en) 1987-08-27
EP0167717B1 (en) 1987-07-22
DE3425608A1 (en) 1986-01-23

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