EP0243750A2 - Bag made of thermoplastic foil - Google Patents

Bag made of thermoplastic foil Download PDF

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Publication number
EP0243750A2
EP0243750A2 EP87105234A EP87105234A EP0243750A2 EP 0243750 A2 EP0243750 A2 EP 0243750A2 EP 87105234 A EP87105234 A EP 87105234A EP 87105234 A EP87105234 A EP 87105234A EP 0243750 A2 EP0243750 A2 EP 0243750A2
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EP
European Patent Office
Prior art keywords
welds
sack
gussets
gusset
area
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
EP87105234A
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German (de)
French (fr)
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EP0243750A3 (en
EP0243750B1 (en
Inventor
Fritz Achelpohl
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Windmoeller and Hoelscher KG
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Windmoeller and Hoelscher KG
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Priority to AT87105234T priority Critical patent/ATE54280T1/en
Publication of EP0243750A2 publication Critical patent/EP0243750A2/en
Publication of EP0243750A3 publication Critical patent/EP0243750A3/en
Application granted granted Critical
Publication of EP0243750B1 publication Critical patent/EP0243750B1/en
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    • 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
    • B65D33/01—Ventilation or drainage of bags

Definitions

  • the invention relates to a sack made of thermoplastic plastic film, consisting of a hose section provided with inlaid side gussets, which in the area of its bottom formed by a transverse bottom weld seam and / or in the area of its opening side to be closed later by a transverse head weld seam with so-called corner welds, by the two each outer layer of the side gussets is provided, which run obliquely from the outer edges of the side gussets inwards and in the direction of the bottom and / or later head weld seams and end in the area of the inner gusset edges, and which are provided with openings for venting the filled bag is.
  • the ventilation openings are located on the inner walls of the gussets lying one above the other in a flat sack in a strip parallel to the head and bottom weld seams, which contains the gusset weld seams and the width of which projections onto the outer ones Folded edges correspond, namely on the inner parts of the parts of the walls diagonally divided by the gusseted weld seams in their central regions.
  • the ventilation openings in its filled state are covered by the outer gusset parts of the base covering them, so that they do not immediately form any external openings which perforate the sack.
  • moisture and water can easily penetrate into the pockets formed by the gusset and are open to the outside and reach the interior of the sack through the ventilation openings.
  • the object of the invention is therefore to create a sack of the type specified at the outset, the ventilation openings of which are better protected against external influences and in particular against the ingress of water or moisture into the sack.
  • this object is achieved in a sack of the generic type in that the welds forming the corner welds are designed with interruptions forming ventilation channels and that at least one wall of the gusset formed by the corner welds has perforations.
  • the sack according to the invention is, as it were, provided with ventilation channels and vent openings arranged in a labyrinthine manner, so that moisture and water cannot get into the inside of the sack at all or under extremely unfavorable circumstances.
  • the labyrinth effect is additionally improved if only the inner walls of the gusset, which lie on top of one another in the flat, unfilled sack, are provided with perforations.
  • the gussets of the flat-lying sacks are provided with at least one perforation which is passed through all four layers of the side gussets. Such continuous perforations are easier to make than perforations that only detect the inner walls of the gussets.
  • the object on which the invention is based is further achieved in that the welds forming the corner welds end at a distance from the outer edges of the flat tube and that parallel to the welds forming the corner welds and at a short distance from them from the outer edges obliquely inward welds are provided to form labyrinth seals.
  • a sack chain 1 made of flat gusseted bags which are formed from a tubular web provided with gussets 2.
  • the tubular web provided with gussets 2 is provided with bottom seams 3, perforation lines 4 and corner welds at regular intervals to produce the individual gusseted bags.
  • the seams 5 forming the corner welds are not continuous, but rather have interruptions 6 which form ventilation channels through which air present in a filled sack can escape into the gusset 7. So that the air can also escape from the gussets 7, the inner layers 8 lying one on top of the other in the gusset region are provided with punched-outs 9, as shown in FIG. 2. In such an embodiment, the air consequently escapes through the channels 6 in the gusset weld seams 5 into the gusset 7 and from there via the punched-outs 9 to the outside. In this way, a labyrinth-like seal is achieved despite good ventilation.
  • the punched-out portions 9 have to be made by means of an internal tool. Although this configuration provides a better seal, it is more complex.
  • the described labyrinthine vents can be provided both in the bottom and head area and only in the head area.
  • An embodiment is also possible in which ventilation is provided only on one side of the sack in the head region.
  • FIG. 4 shows a sack chain 1 'made of flat gusseted sacks which are formed from a tubular web provided with gussets 2.
  • the sack chain 1 of FIG. 4 essentially corresponds to that of FIG. 1.
  • the tubular web provided with gussets 2 is provided with bottom seams 3, perforation lines 4 and corner welds at regular intervals to produce the individual gusseted bags.
  • weld seams 5 'forming the corner welds end at a distance from the outer edges 11 of the flat tube 1'.
  • weld seams 14 run parallel to the corner weld seams 5 'and at a short distance from them from the outer edges 11.
  • These weld seams 14 can have different lengths, as can be seen from FIG. 4.
  • the vent holes 9 ' correspond to the holes shown in FIGS. 1 to 3.

Abstract

1. Bag of thermoplastic sheet, consisting of a tube section provided with inset side folds (2), which is provided in the region of its bottom, formed by a transversely running bottom welding seam (3), and/or in the region of its opening side, to be closed subsequently by a transversely running top welding seam, with welding seams (5') which form so-called corner terminating welds, are made through both the respective outer layers of the side folds (2), run obliquely from the outer edges of the side folds (2) inwards and in the direction of the bottom and/or subsequent top welding seams and end in the region of the inner fold edges, and which is provided with openings (9') for venting the filled bag, characterized in that the welding seams (5') forming the corner terminating welds end at a distance in front of the outer edges (11) of the laid-flat tube (1') and in that welding seams (14) which run parallel to the welding seams (5') and at a small distance from the latter from the outer edges (11) obliquely inwards are provided, in order to form labyrinth seals (13).

Description

Die Erfindung betrifft einen Sack aus thermoplastischer Kunststoffolie, bestehend aus einem mit eingelegten Seitenfalten versehenen Schlauchabschnitt, der im Bereich seines durch eine querverlaufende Bodenschweißnaht gebildeten Bodens und/oder im Bereich seiner später durch eine querverlaufende Kopfschweißnaht zu verschließende Öffnungsseite mit sogenannte Eckabschweißungen bildenden, durch die beiden jeweils äußeren Lagen der Seitenfalten ausgeführten Schweißnähten versehen ist, die schräg von den äußeren Kanten der Seitenfalten nach innen und in Richtung auf die Boden- und/oder späteren Kopfschweißnähte verlaufen und im Bereich der Innenfaltkanten enden, und der mit Öffnungen zur Entlüftung des gefüllten Sackes versehen ist.The invention relates to a sack made of thermoplastic plastic film, consisting of a hose section provided with inlaid side gussets, which in the area of its bottom formed by a transverse bottom weld seam and / or in the area of its opening side to be closed later by a transverse head weld seam with so-called corner welds, by the two each outer layer of the side gussets is provided, which run obliquely from the outer edges of the side gussets inwards and in the direction of the bottom and / or later head weld seams and end in the area of the inner gusset edges, and which are provided with openings for venting the filled bag is.

Bei einem aus der EP-OS 92 885 bekannten Sack dieser Art befinden sich die Entlüftungsöffnungen auf den im flachen Sack aufeinanderliegenden inneren Wandungen der Seitenfalten in einem zu den Kopf- und Bodenschweißnähten parallelen Streifen, der die Zwickelschweißnähte enthält und dessen Breite deren Projektionen auf die äußeren Faltkanten entspricht, und zwar auf den inneren Teilen der durch die Zwickelschweißnähte diagonal geteilten Teilen der Wandungen in deren mittleren Bereichen. Bei diesem bekannten Sack sind die Entlüftungsöffnungen in dessen gefülltem Zustand zwar durch die diese überdeckenden äußeren Zwickelteile des Bodens abgedeckt, so daß sie unmittelbar keine außenliegenden, den Sack perforierenden Öffnungen bilden. In die durch die Zwickel gebildeten, nach außen offenen Taschen kann dennoch aber leicht Feuchtigkeit und Wasser eindringen und durch die Entlüftungsöffnungen in das innere des Sackes gelangen.In a sack of this type known from EP-OS 92 885, the ventilation openings are located on the inner walls of the gussets lying one above the other in a flat sack in a strip parallel to the head and bottom weld seams, which contains the gusset weld seams and the width of which projections onto the outer ones Folded edges correspond, namely on the inner parts of the parts of the walls diagonally divided by the gusseted weld seams in their central regions. In this known sack, the ventilation openings in its filled state are covered by the outer gusset parts of the base covering them, so that they do not immediately form any external openings which perforate the sack. However, moisture and water can easily penetrate into the pockets formed by the gusset and are open to the outside and reach the interior of the sack through the ventilation openings.

Aufgabe der Erfindung ist es daher, einen Sack der eingangs angegebenen Art zu schaffen, dessen Entlüftungsöffnungen besser gegen äußere Einflüsse und insbesondere gegen das Eindringen von Wasser oder Feuchtigkeit in den Sack geschützt sind.The object of the invention is therefore to create a sack of the type specified at the outset, the ventilation openings of which are better protected against external influences and in particular against the ingress of water or moisture into the sack.

Erfindungsgemäß wird diese Aufgabe bei einem Sack der gattungsgemäßen Art dadurch gelöst, daß die die Eckabschweißungen bildenden Schweißnähte mit Entlüftungskanäle bildenden Unterbrechungen ausgeführt sind und daß mindestens je eine Wandung der durch die Eckabschweißungen gebildeten Zwickel Perforationen aufweist. Der erfindungsgemäße Sack ist gleichsam mit labyrinthförmig angeordneten Entlüftungskanälen und Entlüftungsöffnungen versehen, so daß Feuchtigkeit und Wasser überhaupt nicht oder unter äußerst ungünstigen Umständen in das Innere des Sackes gelangen kann.According to the invention this object is achieved in a sack of the generic type in that the welds forming the corner welds are designed with interruptions forming ventilation channels and that at least one wall of the gusset formed by the corner welds has perforations. The sack according to the invention is, as it were, provided with ventilation channels and vent openings arranged in a labyrinthine manner, so that moisture and water cannot get into the inside of the sack at all or under extremely unfavorable circumstances.

Die Labyrinthwirkung wird zusätzlich noch verbessert, wenn nur die inneren, beim flachliegenden ungefüllten Sack aufeinanderliegenden Wandungen der Zwickel mit Perforationen versehen sind. In anderer Ausgestaltung der Erfindung ist vorgesehen, daß die Zwickel der flachliegenden Säcke mit mindestens einer durch alle vier Lagen der Seitenfalten hindurchgeführten Perforation versehen sind. Derartige durchgehende Perforationen lassen sich leichter anbringen als nur die inneren Wandungen der Seitenfalten erfassende Lochungen.The labyrinth effect is additionally improved if only the inner walls of the gusset, which lie on top of one another in the flat, unfilled sack, are provided with perforations. In another embodiment of the invention it is provided that the gussets of the flat-lying sacks are provided with at least one perforation which is passed through all four layers of the side gussets. Such continuous perforations are easier to make than perforations that only detect the inner walls of the gussets.

Die der Erfindung zugrundeliegende Aufgabe wird weiterhin dadurch gelöst, daß die die Eckabschweißungen bildenden Schweißnähte mit Abstand vor den äußeren Kanten des flachgelegten Schlauches enden und daß parallel zu den die Eckabschweißungen bildenden Schweißnähten und im geringen Abstand zu diesen von den äußeren Kanten schräg nach innen verlaufende Schweißnähte vorgesehen sind, um Labyrinthdichtungen zu bilden.The object on which the invention is based is further achieved in that the welds forming the corner welds end at a distance from the outer edges of the flat tube and that parallel to the welds forming the corner welds and at a short distance from them from the outer edges obliquely inward welds are provided to form labyrinth seals.

Vorteilhafte Weiterbildungen der zweiten erfindungsgemäßen Lösung sind in den Unteransprüchen 5 bis 8 beschrieben.Advantageous developments of the second solution according to the invention are described in subclaims 5 to 8.

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnung näher erläutert. In dieser zeigen

  • Fig. 1 einen Teil einer aus Seitenfaltensäcken bestehenden Sackkette,
  • Fig. 2 einen Schnitt durch einen flachliegenden Sack der Sackkette längs der Linie II - II in Fig. 1,
  • Fig. 3 einen Schnitt durch einen Sack der Sackkette nach Fig. 1 längs der Linie III - III in Fig. 1 und
  • Fig. 4 einen Teil einer aus Seitenfaltensäcken bestehenden Sackkette nach der zweiten erfindungsgemäßen Lösung.
Embodiments of the invention are explained in more detail below with reference to the drawing. In this show
  • 1 shows a part of a sack chain consisting of gusseted bags,
  • 2 shows a section through a flat-lying sack of the sack chain along the line II-II in FIG. 1,
  • 3 shows a section through a sack of the sack chain according to FIG. 1 along the line III - III in FIG. 1 and
  • Fig. 4 shows part of a sack chain consisting of gusseted bags according to the second solution according to the invention.

In Fig. 1 ist eine Sackkette 1 aus flachliegenden Seitenfaltensäcken dargestellt, die ausgehend von einer mit Seitenfalten 2 versehenen Schlauchbahn gebildet sind. Die mit Seitenfalten 2 versehene Schlauchbahn ist zur Herstellung der einzelnen Seitenfaltensäcke in gleichmäßigen Abständen zueinander mit Bodennähten 3, mit Perforationslinien 4 und mit Eckabschweißungen versehen.1 shows a sack chain 1 made of flat gusseted bags which are formed from a tubular web provided with gussets 2. The tubular web provided with gussets 2 is provided with bottom seams 3, perforation lines 4 and corner welds at regular intervals to produce the individual gusseted bags.

Die die Eckabschweißungen bildenden Nähte 5 sind nicht durchgehend ausgebildet, sondern sie weisen Unterbrechungen 6 auf, die Entlüftungskanäle bilden, durch die bei einem befüllten Sack vorhandene Luft in die Zwickel 7 entweichen kann. Damit die Luft auch aus den Zwickeln 7 entweichen kann, sind - wie in Fig. 2 dargestellt - im Zwickelbereich die inneren aufeinanderliegenden Lagen 8 mit Ausstanzungen 9 versehen. Bei einer solchen Ausführungsform entweicht folglich die Luft über die Kanäle 6 in den Zwickelschweißnähten 5 in die Zwickel 7 und von dort über die Ausstanzungen 9 nach außen. Auf diese Weise wird eine labyrinthartige Abdichtung trotz guter Belüftungsmöglichkeit erreicht.The seams 5 forming the corner welds are not continuous, but rather have interruptions 6 which form ventilation channels through which air present in a filled sack can escape into the gusset 7. So that the air can also escape from the gussets 7, the inner layers 8 lying one on top of the other in the gusset region are provided with punched-outs 9, as shown in FIG. 2. In such an embodiment, the air consequently escapes through the channels 6 in the gusset weld seams 5 into the gusset 7 and from there via the punched-outs 9 to the outside. In this way, a labyrinth-like seal is achieved despite good ventilation.

Nach dem Ausführungsbeispiel gemäß Fig. 2 müssen die Ausstanzungen 9 mittels eines Innenwerkzeugs angebracht werden. Diese Ausgestaltung bringt zwar eine bessere Abdichtung, ist dafür aber aufwendiger.According to the exemplary embodiment according to FIG. 2, the punched-out portions 9 have to be made by means of an internal tool. Although this configuration provides a better seal, it is more complex.

Will man dieses Innenwerkzeug vermeiden, empfiehlt es sich, gemäß der Ausführungsform nach Fig. 3 die Zwickel 7' mit durch alle vier Lagen hindurchgehenden Stanzlöchern 9' zu versehen. Bei dieser Ausführungsform kann mit einem äußeren Stempel gearbeitet werden. Gegenüber der Ausführungsform nach Fig. 2 ergibt sich jedoch eine labyrinthartige Dichtung, die nicht ganz so wirksam ist wie diese.If one wants to avoid this internal tool, it is advisable, according to the embodiment according to FIG. 3, to provide the gusset 7 'with punching holes 9' passing through all four layers. In this embodiment, with an outer stamp gear be prepared. Compared to the embodiment of FIG. 2, however, there is a labyrinth-like seal that is not quite as effective as this.

Je nach Bedarf können die beschriebenen labyrinthartigen Entlüftungen sowohl im Boden- und Kopfbereich als auch nur im Kopfbereich vorgesehen werden. Möglich ist auch eine Ausführungsform, bei welcher eine Entlüftung nur auf einer Seite des Sackes im Kopfbereich vorgesehen ist.Depending on requirements, the described labyrinthine vents can be provided both in the bottom and head area and only in the head area. An embodiment is also possible in which ventilation is provided only on one side of the sack in the head region.

Fig. 4 zeigt eine Sackkette l' aus flachliegenden Seitenfaltensäcken, die ausgehend von einer mit Seitenfalten 2 versehenen Schlauchbahn gebildet sind. Die Sackkette 1 der Fig. 4 entspricht im wesentlichen derjenigen der Fig. l. Die mit Seitenfalten 2 versehene Schlauchbahn ist zur Herstellung der einzelnen Seitenfaltensäcke in gleichmäßigen Abständen zueinander mit Bodennähten 3, mit Perforationslinien 4 und mit Eckabschweißungen versehen.4 shows a sack chain 1 'made of flat gusseted sacks which are formed from a tubular web provided with gussets 2. The sack chain 1 of FIG. 4 essentially corresponds to that of FIG. 1. The tubular web provided with gussets 2 is provided with bottom seams 3, perforation lines 4 and corner welds at regular intervals to produce the individual gusseted bags.

Die die Eckabschweißungen bildenden Schweißnähte 5' enden mit Abstand vor den äußeren Kanten 11 des flachgelegten Schlauches 1'. Um Labyrinthdichtungen 13 zu bilden, verlaufen parallel zu den Eckabschweißnähten 5' und im geringen Abstand zu diesen von den äußeren Kanten 11 schräg nach innen verlaufende Schweißnähte 14. Diese Schweißnähte 14 können unterschiedliche Länge aufweisen, wie dies aus Fig. 4 zu erkennen ist. Die Entlüftungsausstanzungen 9' entsprechen den Ausstanzungen, die in den Fig. 1 bis 3 dargestellt sind.The weld seams 5 'forming the corner welds end at a distance from the outer edges 11 of the flat tube 1'. In order to form labyrinth seals 13, weld seams 14 run parallel to the corner weld seams 5 'and at a short distance from them from the outer edges 11. These weld seams 14 can have different lengths, as can be seen from FIG. 4. The vent holes 9 'correspond to the holes shown in FIGS. 1 to 3.

Claims (8)

1. Sack aus thermoplastischer Kunststoffolie, bestehend aus einem mit eingelegten Seitenfalten versehenen Schlauchabschnitt, der im Bereich seines durch eine querverlaufende Bodenschweißnaht gebildeten Bodens und/oder im Bereich seiner später durch eine querverlaufende Kopfschweißnaht zu verschließende Öffnungsseite mit sogenannte Eckabschweißungen bildenden, durch die beiden jeweils äußeren Lagen der Seitenfalten ausgeführten Schweißnähten versehen ist, die schräg von den äußeren Kanten der Seitenfalten nach innen und in Richtung auf die Boden- und/oder späteren Kopfschweißnähte verlaufen und im Bereich der Innenfaltkanten enden, und der mit Öffnungen zur Entlüftung des gefüllten Sackes versehen ist,
dadurch gekennzeichnet,
daß die die Eckabschweißungen (7, 7') bildenden Schweißnähte (5) mit Entlüftungskanäle bildenden Unterbrechungen (6) ausgeführt sind und daß mindestens je eine Wandung der durch die Eckabschweißungen gebildeten Zwickel (7, 7') Perforationen (9, 9') aufweist. 1. sack made of thermoplastic plastic film, consisting of a tube section provided with inlaid gussets, which is provided in the area of its bottom formed by a transverse floor weld seam and / or in the area of its opening side to be closed later by a transverse head weld seam with so-called corner welds, which are made by the two outer layers of the side gussets and which are inclined from the outer edges of the side gussets inwards and towards the floor and / or later head welds run and end in the area of the inner fold edges, and which is provided with openings for venting the filled sack,
characterized,
that the welds (5) forming the corner welds (7, 7 ') are designed with interruptions (6) forming ventilation channels and that at least one wall of the gusset (7, 7') formed by the corner welds has perforations (9, 9 ') . 2. Sack nach Anspruch 1, dadurch gekennzeichnet, daß nur die inneren, beim flachliegenden, ungefüllten Sack aufeinanderliegenden Wandungen der Zwickel (7) mit Perforationen (9) versehen sind.2. Sack according to claim 1, characterized in that only the inner walls of the gusset (7) lying one above the other in the flat, unfilled sack are provided with perforations (9). 3. Sack nach Anspruch 1, dadurch gekennzeichnet, daß die Zwickel (7') der flachliegenden Säcke mit mindestens einer durch alle vier Lagen der Seitenfalten durchgeführten Perforation (9') versehen sind.3. Sack according to claim 1, characterized in that the gusset (7 ') of the flat-lying sacks are provided with at least one perforation (9') made through all four layers of the side gussets. 4. Sach aus thermoplastischer Kunststoffolie, bestehend aus einem mit eingelegten Seitenfalten versehenen Schlauchabschnitt, der im Bereich seines durch eine querverlaufende Bodenschweißnaht gebildeten Bodens und/oder im Bereich seiner später durch eine querverlaufende Kopfschweißnaht zu verschließende Öffnungsseite mit sogenannte Eckabschweißungen bildenden, durch die beiden jeweils äußeren Lagen der Seitenfalten ausgeführten Schweißnähten versehen ist, die schräg von den äußeren Kanten der Seitenfalten nach innen und in Richtung auf die Boden- und/oder späteren Kopfschweißnähte verlaufen und im Bereich der Innenfaltkanten enden, und der mit Öffnungen zur Entlüftung des gefüllten Sackes versehen ist, dadurch gekennzeichnet, daß die die Eckabschweißungen bildenden Schweißnähte (5') mit Abstand vor den äußeren Kanten (11) des flachgelegten Schlauches (1') enden und daß parallel zu den Schweißnähten (5') und im geringen Abstand zu diesen von den äußeren Kanten (11) schräg nach innen verlaufende Schweißnähte (14) vorgesehen sind, um Labyrinthdichtungen (13) zu bilden. 4. Property made of thermoplastic plastic film, consisting of a hose section provided with inlaid gussets, that in the area of its bottom formed by a transverse bottom weld and / or in the area of its later by a transverse top weld The opening side to be closed is provided with so-called corner welds, which are made through the two outer layers of the side gussets, which run obliquely from the outer edges of the side gussets inwards and towards the bottom and / or later head weld seams and end in the area of the inner fold edges , and which is provided with openings for venting the filled sack, characterized, that the welds (5 ') forming the corner welds end at a distance from the outer edges (11) of the flat tube (1') and that parallel to the welds (5 ') and at a short distance from them from the outer edges (11) Weld seams (14) which run obliquely inwards are provided in order to form labyrinth seals (13). 5. Sack nach Anspruch 4, dadurch gekennzeichnet, da die die Eckabschweißungen bildenden Schweißnähte (5' und/oder 14) mit Entlüftungskanäle bildenden Unterbrechungen ausgeführt sind.5. Sack according to claim 4, characterized in that the welds forming the corner welds (5 'and / or 14) are designed with interruptions forming ventilation channels. 6. Sack nach Anspruch 4.oder 5, dadurch gekennzeichnet, daß mindestens je eine Wandung der durch die Eckabschweißungen gebildeten Zwickel Perforationen (9) aufweist.6. Sack according to claim 4 or 5, characterized in that at least one wall of the gusset formed by the corner welds has perforations (9). 7. Sack nach Anspruch 6, dadurch gekennzeichnet, daß nur die inneren, beim flachliegenden, ungefüllten Sack aufeinanderliegenden Wandungen der Zwickel mit Perforationen (9) versehen sind.7. Sack according to claim 6, characterized in that only the the inner walls of the gusset, which lie on top of one another in the flat, unfilled sack, are provided with perforations (9). 8. Sack nach Anspruch 6, dadurch gekennzeichnet, daß die Zwickel der flachliegenden Säcke mit mindestens einer durch alle vier Lagen der Seitenfalten durchgeführten Perforation (9') versehen sind.8. Sack according to claim 6, characterized in that the gussets of the flat-lying sacks are provided with at least one perforation (9 ') carried out through all four layers of the side gussets.
EP19870105234 1986-04-23 1987-04-08 Bag made of thermoplastic foil Expired - Lifetime EP0243750B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87105234T ATE54280T1 (en) 1986-04-23 1987-04-08 BAG MADE OF THERMOPLASTIC FILM.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3613783 1986-04-23
DE3613783 1986-04-23
DE3705891 1987-02-24
DE19873705891 DE3705891A1 (en) 1986-04-23 1987-02-24 SIDED POCKET BAG MADE OF THERMOPLASTIC PLASTIC FILM WITH Vents

Publications (3)

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EP0243750A2 true EP0243750A2 (en) 1987-11-04
EP0243750A3 EP0243750A3 (en) 1988-10-05
EP0243750B1 EP0243750B1 (en) 1990-07-04

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EP19870105234 Expired - Lifetime EP0243750B1 (en) 1986-04-23 1987-04-08 Bag made of thermoplastic foil

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EP (1) EP0243750B1 (en)
DE (1) DE3705891A1 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994026605A1 (en) * 1993-05-06 1994-11-24 Jamison Mark D Pressure sensitive gas valve for flexible pouch
US5873221A (en) * 1996-04-03 1999-02-23 Sealed Air Corporation (U.S.) Foam in bag packaging system
US5996782A (en) * 1997-04-14 1999-12-07 Sealed Air Corporation Foam in bag packaging system for manual use
US6272813B1 (en) 1996-04-03 2001-08-14 Sealed Air Corporation Foam in bag packaging system
EP1277665A1 (en) * 2001-07-19 2003-01-22 Emupack Co., Ltd. Bag having degas structure and method for producing the same
US6629599B2 (en) 1996-04-03 2003-10-07 Sealed Air Corporation Foam in bag packaging system
EP1535851A1 (en) * 2002-09-04 2005-06-01 Ishizaki Shizai Co., Ltd: Compressive accommodation bag having non-return valve funct ion
EP1820745A1 (en) * 2006-02-17 2007-08-22 Mondi Packaging AG Flexible package with vent valve means
EP1886929A1 (en) 2006-08-10 2008-02-13 Haver & Boecker oHG Open gusseted bag made of a weldable material
EP1720777B1 (en) * 2003-11-12 2012-05-30 Windmöller & Hölscher KG Perforated form-fill-seal (ffs) bag
EP2845820A1 (en) * 2013-09-04 2015-03-11 Mondi Halle GmbH Gusseted bag made of a composite plastic tissue
WO2018177859A1 (en) 2017-03-27 2018-10-04 Construction Research & Technology Gmbh Sack for liquid and pulverulent substances comprising a soluble surface portion, method and use therewith, and use of a soluble surface portion

Families Citing this family (3)

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DE19720020C1 (en) * 1997-05-13 1998-10-01 Korsnaes Wilhelmstal Gmbh Papi Bilaminar paper bag e.g. for filling machines
DE102007062814A1 (en) 2007-12-21 2009-06-25 Nordenia Deutschland Halle Gmbh Package for pelletized pet food, has bag section arranged within region of side folds, where foil surfaces of bag section are roughened by shaping, milling, grinding, pressing or cutting
DE202008007645U1 (en) 2008-06-07 2008-09-04 Nordenia Deutschland Halle Gmbh Packaging made of a plastic film

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US3237844A (en) * 1963-10-07 1966-03-01 Ici Ltd Bag closure
AT330066B (en) * 1973-07-09 1976-06-10 Bosch Gmbh Robert BOTTOM PLATE BAG
FR2512424A1 (en) * 1981-09-10 1983-03-11 Collet Cafes VACUUM PACKAGING BAG
EP0092885A1 (en) * 1982-04-22 1983-11-02 Wavin B.V. A plastic bag with gusset folds and perforations

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US3237844A (en) * 1963-10-07 1966-03-01 Ici Ltd Bag closure
AT330066B (en) * 1973-07-09 1976-06-10 Bosch Gmbh Robert BOTTOM PLATE BAG
FR2512424A1 (en) * 1981-09-10 1983-03-11 Collet Cafes VACUUM PACKAGING BAG
EP0092885A1 (en) * 1982-04-22 1983-11-02 Wavin B.V. A plastic bag with gusset folds and perforations

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994026605A1 (en) * 1993-05-06 1994-11-24 Jamison Mark D Pressure sensitive gas valve for flexible pouch
US6629599B2 (en) 1996-04-03 2003-10-07 Sealed Air Corporation Foam in bag packaging system
US5873221A (en) * 1996-04-03 1999-02-23 Sealed Air Corporation (U.S.) Foam in bag packaging system
US5913603A (en) * 1996-04-03 1999-06-22 Sealed Air Corporation (U.S.) Mixing device for foam-in-bag packaging system
US6272813B1 (en) 1996-04-03 2001-08-14 Sealed Air Corporation Foam in bag packaging system
US5996782A (en) * 1997-04-14 1999-12-07 Sealed Air Corporation Foam in bag packaging system for manual use
EP1277665A1 (en) * 2001-07-19 2003-01-22 Emupack Co., Ltd. Bag having degas structure and method for producing the same
US6851856B2 (en) 2001-07-19 2005-02-08 Emupack Co., Ltd. Bag having degas structure and method for producing the same
EP1535851A1 (en) * 2002-09-04 2005-06-01 Ishizaki Shizai Co., Ltd: Compressive accommodation bag having non-return valve funct ion
EP1535851A4 (en) * 2002-09-04 2009-04-29 Ishizaki Shizai Kk Compressive accommodation bag having non-return valve funct ion
EP1720777B1 (en) * 2003-11-12 2012-05-30 Windmöller & Hölscher KG Perforated form-fill-seal (ffs) bag
EP1820745A1 (en) * 2006-02-17 2007-08-22 Mondi Packaging AG Flexible package with vent valve means
EP1886929A1 (en) 2006-08-10 2008-02-13 Haver & Boecker oHG Open gusseted bag made of a weldable material
EP2845820A1 (en) * 2013-09-04 2015-03-11 Mondi Halle GmbH Gusseted bag made of a composite plastic tissue
WO2018177859A1 (en) 2017-03-27 2018-10-04 Construction Research & Technology Gmbh Sack for liquid and pulverulent substances comprising a soluble surface portion, method and use therewith, and use of a soluble surface portion

Also Published As

Publication number Publication date
DE3705891A1 (en) 1987-10-29
EP0243750A3 (en) 1988-10-05
EP0243750B1 (en) 1990-07-04

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