EP0004891B1 - Procédé et dispositif pour la fabrication d'emballages à fermeture coiffante - Google Patents

Procédé et dispositif pour la fabrication d'emballages à fermeture coiffante Download PDF

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Publication number
EP0004891B1
EP0004891B1 EP79100977A EP79100977A EP0004891B1 EP 0004891 B1 EP0004891 B1 EP 0004891B1 EP 79100977 A EP79100977 A EP 79100977A EP 79100977 A EP79100977 A EP 79100977A EP 0004891 B1 EP0004891 B1 EP 0004891B1
Authority
EP
European Patent Office
Prior art keywords
flap
foil
turned
parallel
down flap
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.)
Expired
Application number
EP79100977A
Other languages
German (de)
English (en)
Other versions
EP0004891A1 (fr
Inventor
Erich Meyer
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.)
Optima-Maschinenfabrik Dr Buehler & Co GmbH
Original Assignee
Optima-Maschinenfabrik Dr Buehler & Co 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 Optima-Maschinenfabrik Dr Buehler & Co GmbH filed Critical Optima-Maschinenfabrik Dr Buehler & Co GmbH
Publication of EP0004891A1 publication Critical patent/EP0004891A1/fr
Application granted granted Critical
Publication of EP0004891B1 publication Critical patent/EP0004891B1/fr
Expired legal-status Critical Current

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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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/261—Folding sheets, blanks or webs involving transversely folding, i.e. along a line perpendicular to the direction of movement
    • 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B31B2160/102—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents obtained from essentially rectangular sheets
    • 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
    • B31B2241/00—Making bags or boxes intended for a specific use

Definitions

  • the invention relates to a method and a device for producing packaging with a slip flap that overlaps an opening slot from a film web or the like, the folded film web being cut open in the longitudinal direction.
  • packaging bags For certain packaging goods, such as sanitary napkins or the like, packaging bags have been developed which are referred to as flap bags or also safe packs. These have an open slot overlapped by a flap, which is closed, for example, with small welding spots and can be torn open by the user.
  • the object of the invention is to provide a method and a device of the type mentioned at the outset which enable a simpler and less complicated production of everting flap bags.
  • an apparatus for performing this method i.e. for the production of packaging with a slip flap which overlaps an opening slot, from a film web folded in the longitudinal direction, with a cutting device which cuts the incoming film web into two film strips lying one above the other. It is characterized by a parallel displacement device which guides the one film strip around the desired overlap under the other film strips forming the flap, such that the flap lies in the region of the longitudinal section.
  • the overlap takes place through a lateral displacement, which enables precise and defined guidance of the film web without a tendency to warp.
  • the edges of the slip flap are formed by the longitudinal cut and are therefore clean and error-free.
  • the double-lying film web is either formed from a flat-lying web by folding in the middle or is present as a half-tube.
  • the longitudinal cutting and parallel displacement device can preferably be arranged in the area of a folding switch for the usual M-shaped bottom fold.
  • the web deflected to the parallel offset also has a certain longitudinal offset compared to the continuous web, but this is always constant and can therefore be taken into account when printing on the film web, so that it is possible to produce packaging with a precise print image on the front and back.
  • FIGS. 1 and 2 show a package 11 in the form of an everting flap bag made of weldable plastic film, which consists of two film strips 12, 13 forming the front and back of the bag, which are connected to one another by two side weld seams 14.
  • the goods to be packed are later filled in on the left edge in FIGS. 1 and 2.
  • This side is therefore open in the case of the unfilled container shown, the strip 13 projecting beyond the strip 12 because a holding jaw acts there during the later filling process, while the section 12 is raised by suction arms and the bag is thus opened.
  • the film strip 13 is placed in an M-shaped bottom fold 15, which is followed by a flap section 16 which overlaps section 12 by a substantial amount.
  • An inlet slot is formed between the flap section 16 and the right free end of the film strip 12, which slot remains optically closed against external influences even after the initial opening of the container due to the overlap.
  • An initial closure or sealing is given by the spot welds 18, which the slip.
  • the device shown in FIGS. 3 and 4 has a film roll 20, which lies simply in the example shown and is provided with a printing, not shown.
  • the film roll could also be a so-called half tube, i.e. contain a double-lying film and would then preferably be arranged with an axis perpendicular to the drawing plane.
  • the film 21 runs over a deflection and folding roller 22 'and is thereby folded into a half-tube or a double-lying web.
  • This is fed to the actual folding device 22, which has a wedge-shaped pre-separator 23.
  • the device 22, which has the basic shape of a horizontal wing, is mounted on the machine frame on the upper side in FIG. 3, to which the open side of the half-hose points, and projects freely on the other side.
  • the folded edge 24 of the half-tube runs over the lower free edge of the device 22 in FIG. 3.
  • the M-shaped bottom fold 15 is formed by an insert-folding device with a folding switch 25, which acts on the carrier 24 from outside the film web on a carrier 26.
  • the device 22 is thus hollow at least in this area.
  • a knife carrier 27 is fastened to the carrier 26, at the front end of which a longitudinal cutting device 28 is arranged in the form of a knife protruding into a slot of the device 22 and oriented longitudinally to the transport direction 29 of the film web. .
  • This knife could also protrude from the device from below, for example, or be formed by another cutting device.
  • the longitudinal cutting device 28 separates the film web lying above into the film strips 12 and 13.
  • the strip lying above the knife in FIG. 3 is designated by 12 and the strip 13 underneath forms the slip flap 16.
  • a parallel displacement device 30 Shortly behind the knife is a parallel displacement device 30, which consists of two mutually parallel rods 31, 32, which are arranged at an acute angle to the transverse direction to the transport direction 29. They are, as can be seen in FIG. 4, also slightly offset in height, the right rod 31 in FIG. 4 being somewhat higher than the left rod 32.
  • This parallel displacement device 30 has the task of being carried out by the Longitudinal cutting device 28 to separate separated film strips 12 so that its edge 17 lies under the flap section 16 and is overlapped by it. Accordingly, the rods 31, 32 extend below the flap section 16.
  • the parallel transfer device can also by other means such as baffles or the like. be formed, however, the design with two parallel rods is particularly simple and advantageous, the rods having the advantage over rollers that the parallel displacement is particularly trouble-free and even.
  • the film strip 12 runs in a Z-shape around the two rods and is offset parallel by an amount that results from the distance and the inclined position of the rods 31, 32.
  • the film strip 13 is shown with its folded edge 24 and the flap section 16 with a long dashed line, while the film strip 12 is indicated by dash-dotted lines.
  • the finished, folded sheet of film prepared for separation welding is drawn off by a pair of rollers 33 and fed to a separation welding device 34, which carries out the side weld seams 14.
  • a separation welding device 34 which carries out the side weld seams 14.
  • the folding switch 25 is not shown so deep that the inner vertex of the M of the bottom fold overlaps the free edge of the strip 12, as shown in Fig. 2, for clarity of illustration.
  • the flap opening can be located at a location far from the bottom fold or can be used without it.
  • the separating welding device 34 in the area of the slip flap and the M-shaped edge fold welds all film parts together in the area of the side edge, that is to say in a partial area up to five films. It is also possible to provide a different edge fold. After removing the knife and the parallel transfer device, the device can also produce bags without a flap.

Landscapes

  • Making Paper Articles (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)

Claims (9)

1. Procédé de fabrication d'emballages (11) comportant un rabat (16) qui recouvre une fente d'ouverture, à partir d'un panneau de feuille ou d'un matériau similaire, le panneau de feuille plié étant découpé dans le sens longitudinal, caractérisé en ce que au moins l'une des bandes de feuille (12, 13) se formant placées l'une sur l'autre est déplacée latéralement de telle sorte que les rabats (16) se forment dans la zone de la coupe longitudinale.
2. Procédé selon la revendication 1, caractérisé en ce que la bande de feuille (12) déplacée latéralement est guidée sous l'autre bande de feuille (13) qui forme la rabat (16).
3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que la formation d'un soufflet (15) en forme de M sur le côté rabat du sac parallèlement au rabat (16) est réalisée après la coupe longitudinale et avant le recouvrement.
4. Procédé selon l'une des revendications 1 à 3 caractérisé en ce que le soufflet (15) en forme de M est réalisé tout près de la coupe longitudinale.
5. Dispositif de fabrication d'emballages comportant un rabat, qui recouvre une fente d'ouverture, à partir d'un panneau de feuille plié dans le sens longitudinal, à l'aide d'un dispositif de coupe (28) qui sépare le panneau de feuille qui arrive en deux bandes de feuille (12, 13) placées l'une sur l'autre, pour la mise en oeuvre du procédé selon la revendication 1, caractérisé par un dispositif de décalage parallèle (30) qui guide l'une des bandes de feuille (12), avec le recouvrement voulu, sous l'autre bande de feuille (13) formant le rabat (16), de telle sorte que le rabat (16) se trouve dans la zone de la coupe longitudinale.
6. Dispositif selon la revendication 5, caractérisé en ce que le dispositif de décalage parallèle (30) se compose d'au moins deux moyens de déviation qui sont disposés parallèlement l'un à l'autre et obliquement par rapport à la direction de transport (29), pour la première bande de feuille (12).
7. Dispositif selon la revendication 6, caractérisé en ce que les moyens de déviation sont des tiges (31, 32), autour desquelles la bande de feuille (12) est guidée.
8. Dispositif selon l'une des revendications 5 à 7, caractérisé en ce qu'entre le dispositif de coupe et le dispositif de décalage parallèle est placée une aiguille de pliage (25) pour un soufflet en forme de M (15) proche de et parallèle au rabat (16).
9. Dispositif selon l'une des revendications 7 ou 8, caractérisé en ce que derrière le dispositif de décalage (30) est placé un dispositif d'extraction (33) et un dispositif de soudage (34) de séparation transversal.
EP79100977A 1978-04-04 1979-04-02 Procédé et dispositif pour la fabrication d'emballages à fermeture coiffante Expired EP0004891B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2814531 1978-04-04
DE2814531A DE2814531C2 (de) 1978-04-04 1978-04-04 Verfahren und Vorrichtung zur Herstellung von Verpackungen mit einer Stülpklappe

Publications (2)

Publication Number Publication Date
EP0004891A1 EP0004891A1 (fr) 1979-10-31
EP0004891B1 true EP0004891B1 (fr) 1981-04-15

Family

ID=6036140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79100977A Expired EP0004891B1 (fr) 1978-04-04 1979-04-02 Procédé et dispositif pour la fabrication d'emballages à fermeture coiffante

Country Status (2)

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EP (1) EP0004891B1 (fr)
DE (1) DE2814531C2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1120258B (de) * 1959-12-24 1961-12-21 Alfred Schmermund Aufreissstreifen aus einem aus Zellglas oder einem aehnlichen kleb- oder schweissbaren Werkstoff bestehenden Verpackungsmaterial und Verfahren zu dessen Herstellung
US3308722A (en) * 1964-10-28 1967-03-14 Package Products Company Inc Method of forming merchandise container
US3808768A (en) * 1972-07-12 1974-05-07 W Dobbs Method and apparatus for manufacturing stuffed and sealed mailing packages
DE2256242C3 (de) * 1972-11-16 1979-01-04 Windmoeller & Hoelscher, 4540 Lengerich Verfahren und Vorrichtung zur Herstellung von Seitenfaltenbeuteln
JPS5182178A (en) * 1974-12-25 1976-07-19 Dainippon Printing Co Ltd Jiritsuseifukuro oyobi sonoseizohoho

Also Published As

Publication number Publication date
DE2814531C2 (de) 1985-05-30
EP0004891A1 (fr) 1979-10-31
DE2814531A1 (de) 1979-10-18

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