WO1988007479A1 - Packaging receptacle with gas outlet vent - Google Patents

Packaging receptacle with gas outlet vent Download PDF

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Publication number
WO1988007479A1
WO1988007479A1 PCT/DE1988/000127 DE8800127W WO8807479A1 WO 1988007479 A1 WO1988007479 A1 WO 1988007479A1 DE 8800127 W DE8800127 W DE 8800127W WO 8807479 A1 WO8807479 A1 WO 8807479A1
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WO
WIPO (PCT)
Prior art keywords
channel
bag
layer
layers
packaging material
Prior art date
Application number
PCT/DE1988/000127
Other languages
German (de)
French (fr)
Inventor
Klaus Domke
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO1988007479A1 publication Critical patent/WO1988007479A1/en
Priority to DK645288A priority Critical patent/DK645288A/en

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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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/26—Articles or materials wholly enclosed in laminated sheets or wrapper blanks
    • 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 packaging container with a degassing valve according to the preamble of claim 1.
  • a packaging bag which is known, for example, from EP-A-144 011 and is sealed by welding seams, the contents are protected against the entry of air or atmospheric oxygen.
  • the gas generated by the filling material e.g.
  • the novel packaging container with the characterizing features of claim 1 has the advantage that the path of the gas emerging from the inside of the bag in the valve formed by the packaging material is very short, so that no significant throttling can occur. Furthermore, this path and thus the opening pressure of the degassing valve can be preset by a specific dimensioning of the distance between the inlet and the outlet opening.
  • FIG. 1 shows a bag pack in a diagrammatic view
  • FIGS. 2 and 3 partial cross-sections of the bag pack according to FIG. 1 in planes II-II and III-III on a greatly enlarged scale.
  • the bag pack shown in which the enveloping bag has two wide and two narrow side walls 1, 2 and a head 3 and egg NEN bottom 4 is formed from a flexible packaging film.
  • the head 3 and the bottom 4 are sealed gas-tight by means of a transverse seam 5, 6 and a side wall with a longitudinal seam, not shown, so that the packaged goods are insulated from the ambient air.
  • the packaging material film used to form the bag consists of a film laminate or a multilayer packaging material which has at least two layers 7, 8.
  • the packaging material can also have more than two layers.
  • the layers 7, 8 preferably consist of a thermoplastic, heat sealable or weldable plastic.
  • one of the layers 7, 8 or an additional layer can consist of a thin metal foil.
  • the individual layers 7, 8 are connected to one another with a layer 9 made of a suitable adhesive.
  • the bag has a degassing or pressure relief valve 10, through which gases can flow out of the interior of the bag if there is excess pressure, but this does allow access prevented from air in the bag interior.
  • the pressure relief valve 10 is set up in the packaging material of the bag.
  • the two layers 7, 8 are not connected to one another in a longitudinal strip, so that one in the region of this strip Bubble is formed in the form of a channel 11, in the area of which the layers lie loosely on top of one another under equal pressure.
  • a liquid sealant in the channel 11 for example Silicone oil arranged, which fills unevenness of the layer surfaces and pulls the layer areas against each other by adhesion.
  • openings in the form of slots 12 are arranged at equal intervals in the inner layer 8 of the multilayer packaging material. Longitudinally offset to these slots 12, slots 13 are also arranged in the cover of the channel 11 in the outer layer 7 of the multilayer packaging material. The width of the slots is very small, so that the dust particles in the filling material are prevented from passing through.
  • the distance between the mutually offset slots 12, 13 in the inner and in the outer layer 8, 7 is approximately 3 to 20 mm.
  • the slits 12, 13 are cut into the foils before the individual layers 7, 8 are laminated and these foils are then brought together in such a way that the described offset of the slits 12, 13 to one another is formed.
  • the liquid sealant is also introduced into the channel 11 during lamination.
  • the channel 11 preferably extends in the longitudinal direction of the laminated layers 7 and 8, so that it can easily be produced on known machines.
  • the channel can also run transversely to the longitudinal direction of the packaging material webs; in this case it is formed depending on the length of the bag when the multilayer packaging material is laminated.
  • the channel 11 does not have to extend over the entire length or width of a bag, but can extend within part of a wall of the bag.
  • a plurality of slots 12, 13 are provided in the region of the channel 11 of a bag. For many gassing filling goods, however, it is sufficient to arrange only one slot in the area of the channel 11 in the outer and in the inner layer 7, 8 of the packaging material.
  • openings in a different shape can also be arranged in the layers 7, 8, for example arc-shaped or star-shaped cuts, punched-outs or perforations with several small diameter punctures that are close together. It is essential that the openings in the inner layer 8 have a very small width, so that they act simultaneously as a filter against the contents in the bag.
  • the openings in the inner layer 8 have a very small width, so that they act simultaneously as a filter against the contents in the bag.
  • Breakthroughs in the outer layer 7 have a larger width.
  • the pressure relief valve 10 of the bag described above acts as follows:
  • the exemplary embodiment described above is a bag package made of a flexible multilayer packaging material.
  • the outermost layer, in which the opening opening is arranged should consist of a soft or flexible layer, whereas the inner layer or the inner layers combined into a block can have a higher rigidity .

Abstract

Packaging receptacle, made from a multi-layer packaging material, provided with a gas outlet vent (10) to enable the escape of gas generated by the packaged goods, such a coffee. To form said gas outlet vent, the layers of the multi-layer packaging material are not joined to one another across their total surface, the flexible external layer (7) instead lying slackly across the inner layer (8) forming a channel (1) in a particular area. Openings (12, 13) in the layers, in the form of slits or perforations, enable the passage of gas through the inner layer into the channel, and from said channel into the outside air, the openings in the inner layer being staggered in relation to those in the outer layer.

Description

Verpackungsbehälter mit Entgasungsventil Packaging container with degassing valve
Stand der TechnikState of the art
Die Erfindung betrifft einen Verpackungsbehälter mit einem Entgasungsventil nach dem Oberbegriff des Anspruchs 1. In einem derartigen beispielsweise aus der EP-A-144 011 bekannten, durch Schweißnähte dicht verschlossenen Verpackungsbeutel ist das Füllgut vor dem Zutritt von Luft bzw. Luftsauerstoff geschützt. Die im Bereich der Blase, die als Kanal mit an den Enden des Beutels an den Schnittkanten angeordneten Öffnungen ausgebildet ist, bei Gleichdruck oder geringem Überdruck aufeinanderliegβnden Schichten verhindern wie ein Überdruckventil einen Gasaustausch. Das vom Füllgut erzeugte Gas, beispielsweise bei Kaffee Kohlendioxid, kann jedoch bei steigendem Überdruck im Beutelinnern durch den als Perforation ausgebildeten Durchbruch in der inneren Schicht des Mehrschichtpackstoffs in den Kanal eindringen, dort die beiden den Kanal begrenzenden Schichten auseinanderdrücken und durch die Öffnungen am Ende des Kanals ins Freie abströmen. Nach Abbau des Überdrucks legen sich die beiden Schichten durch ihre inneren Spannungen wieder abdichtend aufeinander, so daß ein Eindringen von Luft in das Beutelinnere verhindert wird. Nachteilig bei dem bekannten Beutel ist, daß aufgrund der verhältnismäßig großen Länge des Kanals und aufgrund von Faltkanten und Knickfalten am Kopf und Boden und nahe den Verschlußnähten der Beutelpackung durch Spannungen im Packstoff Drosselstellen gebildet werden, durch die der Öffnungsdruck des Überdruckventils sehr hoch eingestellt wird. Durch einen Innendruck, der beispielsweise 10 mbar übersteigt, wird jedoch die Beutelpackung so aufgebläht, daß sie ein unschönes Aussehen annimmt und mancher Verbraucher dadurch, eine verdorbene Ware vermutet.The invention relates to a packaging container with a degassing valve according to the preamble of claim 1. In such a packaging bag, which is known, for example, from EP-A-144 011 and is sealed by welding seams, the contents are protected against the entry of air or atmospheric oxygen. The layers lying on top of one another in the area of the bladder, which is designed as a channel with openings arranged at the ends of the bag at the cut edges, prevent a gas exchange like an overpressure valve. The gas generated by the filling material, e.g. carbon dioxide in coffee, can penetrate into the channel through the perforation in the inner layer of the multilayer packaging material if the overpressure in the interior of the bag increases, push the two layers delimiting the channel apart and through the openings at the end of the Drain the channel outside. After the overpressure has been relieved, the two layers are placed on top of one another again by their internal tensions, so that air does not penetrate into the interior of the bag. A disadvantage of the known bag is that due to the relatively long length of the channel and due to folded edges and folds on the head and bottom and near the closure seams of the bag pack, throttling points are formed by tensions in the packaging material, by means of which the opening pressure of the pressure relief valve is set very high. Due to an internal pressure that exceeds, for example, 10 mbar, the bag package is inflated in such a way that it takes on an unattractive appearance and some consumers suspect that the goods are spoiled.
Vorteile der ErfindungAdvantages of the invention
Der neuartige Verpackungsbehälter mit den kennzeichnenden Merkmalen des Anspruchs 1 hat den Vorteil, daß der Weg des aus dem Beutelinnern austretenden Gases in dem vom Packstoff gebildeten Ventil sehr kurz ist, so daß keine wesentliche Drosselung auftreten kann. Ferner ist dieser Weg und damit der Öffnungsdruck des Entgasungsventils durch eine bestimmte Bemessung des Abstandes zwischen dem Eintrittsund dem Austrittsdurchbruch voreinstellbar.The novel packaging container with the characterizing features of claim 1 has the advantage that the path of the gas emerging from the inside of the bag in the valve formed by the packaging material is very short, so that no significant throttling can occur. Furthermore, this path and thus the opening pressure of the degassing valve can be preset by a specific dimensioning of the distance between the inlet and the outlet opening.
Zeichnungdrawing
Ein Ausfünrungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigen Figur 1 eine Beutelpackung in schaubildlicher Ansicht, Figur 2 und 3 Teilquerschnitte der Beutelpackung nach der Figur 1 in den Ebenen II-II und III-III in stark vergrößertem Maßstab.An exemplary embodiment of the invention is shown in the drawing and is described in more detail below. 1 shows a bag pack in a diagrammatic view, FIGS. 2 and 3 partial cross-sections of the bag pack according to FIG. 1 in planes II-II and III-III on a greatly enlarged scale.
Beschreibung des AusführungsbeispielsDescription of the embodiment
Die dargestellte Beutelpackung, bei der der umhüllende Beutel zwei breite und zwei schmale Seitenwände 1, 2 sowie einen Kopf 3 und ei nen Boden 4 aufweist, ist aus einer flexiblen Packstoffolie geformt. Der Kopf 3 und der Boden 4 sind mittels je einer Quernaht 5, 6 und eine Seitenwand mit einer nicht dargestellten Längsnaht gasdicht versiegelt, so daß das verpackte Gut von der Umgebungsluft isoliert ist.The bag pack shown, in which the enveloping bag has two wide and two narrow side walls 1, 2 and a head 3 and egg NEN bottom 4 is formed from a flexible packaging film. The head 3 and the bottom 4 are sealed gas-tight by means of a transverse seam 5, 6 and a side wall with a longitudinal seam, not shown, so that the packaged goods are insulated from the ambient air.
Die zur Formung des Beutels verwendete Packstoffolie besteht aus einem Folienlaminat bzw. einem Mehrschichtpackstoff, der mindestens zwei Schichten 7, 8 aufweist. Um die Dichtigkeit des Beutels für hochwertige, Sauerstoffempfindliche Füllgüter zu erhöhen, kann der Packstoff auch mehr als zwei Schichten haben. Die Schichten 7, 8 bestehen vorzugsweise aus einem thermoplastischen, heißsiegel- bzw. schweißbaren Kunststoff. Zum Erhöhen der Gasdichtigkeit kann eine der Schichten 7, 8 oder eine zusätzliche Schicht aus einer dünnen Metallfolie bestehen. Die einzelnen Schichten 7, 8 sind mit einer Schicht 9 aus einem geeigneten Klebstoff miteinander verbunden.The packaging material film used to form the bag consists of a film laminate or a multilayer packaging material which has at least two layers 7, 8. To increase the tightness of the bag for high-quality, oxygen-sensitive products, the packaging material can also have more than two layers. The layers 7, 8 preferably consist of a thermoplastic, heat sealable or weldable plastic. To increase the gas tightness, one of the layers 7, 8 or an additional layer can consist of a thin metal foil. The individual layers 7, 8 are connected to one another with a layer 9 made of a suitable adhesive.
Um zu vermeiden, daß der gasdicht verschlossene Beutel sich stark aufbläht oder gar platzt, wenn das eingeschlossene Füllgut Gas erzeugt, hat der Beutel ein Entgasungs- oder Überdruckventil 10, durch das bei Überdruck Gase aus dem Beutelinnern ins Freie abströmen können, das aber den Zutritt von Luft in das Beutelinnere verhindert.In order to avoid that the gas-tightly sealed bag inflates or even bursts when the enclosed filling material produces gas, the bag has a degassing or pressure relief valve 10, through which gases can flow out of the interior of the bag if there is excess pressure, but this does allow access prevented from air in the bag interior.
Das Überdruckventil 10 ist im Packstoff des Beutels eingerichtet. Dazu sind im Bereich einer Seitenwand des Beutels in dem Mehrschichtpackstoff, bei dem die einzelnen Schichten 7, 8 im wesentlichen vollflächig mit einer Kleberschicht miteinander verbunden sind, in einem Längsstreifen die beiden Schichten 7, 8 nicht miteinander verbunden, so daß im Bereich dieses Streifens eine Blase in Form eines Kanals 11 gebildet wird, in dessen Bereich die Schichten bei Gleichdruck auf beiden Seiten lose aufeinanderliegen. Vorzugsweise ist in dem Kanal 11 ein flüssiges Dichtmittel, beispielsweise Silikonöl angeordnet, das Unebenheiten der Schichtoberflächen ausfüllt und durch Adhäsion die Schichtbereiche gegeneinander zieht. In Deckung mit dem Kanal 11 sind in der inneren Schicht 8 des Mehrschichtpackstoffs in gleichen Abständen Durchbrüche in Form von Schlitzen 12 angeordnet. Längsversetzt zu diesen Schlitzen 12 sind ebenfalls in Deckung des Kanals 11 auch in der äußeren Schicht 7 des Mehrschichtpackstoffs Schlitze 13 angeordnet. Die Weite der Schlitze ist sehr gering, so das Staubpartikel des Füllguts am Durchtritt gehindert werden. Der Abstand der zueinander versetzten Schlitze 12, 13 in der inneren und in der äußeren Schicht 8, 7 beträgt etwa 3 bis 20 mm. Die Schlitze 12, 13 werden vor dem Laminieren der einzelnen Schichten 7, 8 in die Folien eingeschnitten und darauf diese Folien so zusammengeführt, daß der beschriebene Versatz der Schlitze 12, 13 zueinander gebildet wird. Ebenfalls beim Laminieren wird das flüssige Dichtmittel in den Kanal 11 eingebracht. Vorzugsweise erstreckt sich der Kanal 11 in Längsrichtung der laminierten Schichten 7 und 8, so daß er einfach auf bekannten Maschinen herstellbar ist. Der Kanal kann jedoch auch quer zur Längsrichtung der Packstoffbahnen verlaufen; in diesem Falle wird er in Abhängigkeit von der Beutellänge beim Laminieren des Mehrschichtpackstoffs ausgebildet. Ergänzend wird bemerkt, daß der Kanal 11 sieb nicht über die gesamte Länge oder Breite eines Beutels erstrecken muß, sondern innerhalb eines Teils einer Wand des Beutels sich erstrecken kann. Beim vorliegenden Beispiels sind mehrere Schlitze 12, 13 im Bereich des Kanals 11 eines Beutels vorgesehen. Für viele gasende Füllgüter genügt es jedoch, im Bereicb des Kanals 11 jeweils nur einen Schlitz in der äußeren und in der inneren Schicht 7, 8 des Packstoffs anzuordnen.The pressure relief valve 10 is set up in the packaging material of the bag. For this purpose, in the region of a side wall of the bag in the multilayer packaging material, in which the individual layers 7, 8 are essentially connected to one another over the entire surface with an adhesive layer, the two layers 7, 8 are not connected to one another in a longitudinal strip, so that one in the region of this strip Bubble is formed in the form of a channel 11, in the area of which the layers lie loosely on top of one another under equal pressure. There is preferably a liquid sealant in the channel 11, for example Silicone oil arranged, which fills unevenness of the layer surfaces and pulls the layer areas against each other by adhesion. In alignment with the channel 11, openings in the form of slots 12 are arranged at equal intervals in the inner layer 8 of the multilayer packaging material. Longitudinally offset to these slots 12, slots 13 are also arranged in the cover of the channel 11 in the outer layer 7 of the multilayer packaging material. The width of the slots is very small, so that the dust particles in the filling material are prevented from passing through. The distance between the mutually offset slots 12, 13 in the inner and in the outer layer 8, 7 is approximately 3 to 20 mm. The slits 12, 13 are cut into the foils before the individual layers 7, 8 are laminated and these foils are then brought together in such a way that the described offset of the slits 12, 13 to one another is formed. The liquid sealant is also introduced into the channel 11 during lamination. The channel 11 preferably extends in the longitudinal direction of the laminated layers 7 and 8, so that it can easily be produced on known machines. However, the channel can also run transversely to the longitudinal direction of the packaging material webs; in this case it is formed depending on the length of the bag when the multilayer packaging material is laminated. In addition, it is noted that the channel 11 does not have to extend over the entire length or width of a bag, but can extend within part of a wall of the bag. In the present example, a plurality of slots 12, 13 are provided in the region of the channel 11 of a bag. For many gassing filling goods, however, it is sufficient to arrange only one slot in the area of the channel 11 in the outer and in the inner layer 7, 8 of the packaging material.
Anstelle von Längsschlitzen können auch Durchbrüche in anderer Form in den Schichten 7, 8 angeordnet sein, beispielsweise bogenförmige oder sternförmige Schnitte, Ausstanzungen oder auch Perforationen mit mehreren nahe beieinander liegenden Durchstichen mit geringem Durchmesser. Wesentlich ist, daß did Durchbrüche in der inneren Schicht 8 eine sehr geringe Weite haben, so daß sie gleichzeitig als Filter gegenüber dem Füllgut im Beutel wirken. Dagegen können dieInstead of longitudinal slots, openings in a different shape can also be arranged in the layers 7, 8, for example arc-shaped or star-shaped cuts, punched-outs or perforations with several small diameter punctures that are close together. It is essential that the openings in the inner layer 8 have a very small width, so that they act simultaneously as a filter against the contents in the bag. On the other hand, the
Durchbrüche in der äußeren Schicht 7 eine größere Weite haben.Breakthroughs in the outer layer 7 have a larger width.
Das Überdruckventil 10 des oben beschriebenen Beutels wirkt wie folgt:The pressure relief valve 10 of the bag described above acts as follows:
Bei gleichem Druck im Innern der Beutelpackung und in der diese umgebenden Atmosphäre sowie bei einem geringen Überdruck im Innern der Beutelpackung liegen im Bereich des Kanals 11 die beiden Schichten 7, 8 aneinander an, wobei der Kanal 11 abgedichtet ist. Das darin enthaltene flüssige Dichtmittel erhöht die Dichtigkeit, so daß selbst eine Permeation von kleinen Gasmengen verhindert wird. Wenn der Gasdruck im Innern der Beutelpackung durch vom Füllgut abgesondertes Gas ansteigt und eine bestimmte Höhe erreicht, dringt Gas durch die Schlitze 12 der inneren Schicht 8 in den Kanal 11, drückt dort die beiden aufeinanderliegenden Schichtbereiche auseinander (Figur 2) und gelangt in den Bereich eines Schlitzes 13 in der äußeren Schicht 7, wobei eine Verbindung zwischen dem inneren Schlitz 12 und dem nächstliegenden äußeren Schlitz 13 geschaffen wird. Durch diese Verbindung kann nun Gas aus dem Innern der Beutelpackung insAt the same pressure inside the bag pack and in the atmosphere surrounding it and with a slight excess pressure inside the bag pack, the two layers 7, 8 abut each other in the area of the channel 11, the channel 11 being sealed. The liquid sealant contained therein increases the tightness, so that even a permeation of small amounts of gas is prevented. When the gas pressure inside the bag pack rises due to gas separated from the filling material and reaches a certain height, gas penetrates through the slots 12 of the inner layer 8 into the channel 11, pushes the two layer areas lying on top of one another there (FIG. 2) and reaches the area a slot 13 in the outer layer 7, whereby a connection between the inner slot 12 and the closest outer slot 13 is created. This connection allows gas to enter the inside of the bag package
Freie ausströmen. Nach Abgabe einer bestimmten Gasmenge und sinkendem Innendruck im Innern der Beutelpackung legen sich die beiden Schichten 7, 8 im Bereich des Kanals 11 wieder aneinander, so daß sich der Durchlaß im Kanal 11 wieder schließt. Damit ist ein Eindringen von Luftsauerstoff aus der Atmosphäre in das Innere der Beutelpackung unterbunden.Emanating free. After a certain amount of gas has been dispensed and the internal pressure in the interior of the bag pack has dropped, the two layers 7, 8 lie together again in the region of the channel 11, so that the passage in the channel 11 closes again. This prevents the penetration of atmospheric oxygen from the atmosphere into the interior of the bag package.
Bei dem oben beschriebenen Ausführungsbeispiel handelt es sich um eine Beutelpackung aus einem flexiblen Mehrschichtpackstoff. Um bei Verpackungsbehältern aus etwas steiferem Packstoffen einen geringen Öffnungsdruck des Überdruckventils sicherzustellen, wird darauf hingewiesen, daß die äußerste Schicht, in der der ins Freie mündende Durchbruch angeordnet ist,aus einer weichen oder flexiblen Schicht bestehen sollte, dagegen die innere Schicht oder die zu einem Block zusammengefaßten inneren Schichten eine höhere Steifigkeit haben können. The exemplary embodiment described above is a bag package made of a flexible multilayer packaging material. In order for packaging containers made of somewhat stiffer packaging materials to have a small amount To ensure opening pressure of the pressure relief valve, it is pointed out that the outermost layer, in which the opening opening is arranged, should consist of a soft or flexible layer, whereas the inner layer or the inner layers combined into a block can have a higher rigidity .

Claims

Ansprüche Expectations
1. Verpackungsbehälter mit einem Entgasungsventil, der aus einem Mehrschichtpackstoff mit wenigstens einer flexiblen äußeren Schicht geformt ist, bei dem die Schichten miteinander fest außer in einem bestimmten Bereich verbunden sind, in dem sie eine Blase bildend lose aufeinanderliegen, wobei die Blase durch wenigstens einen Durchbruch in der inneren Schicht mit dem Innern des Behälters in Verbindung steht, dadurch gekennzeichnet, daß versetzt zu dem Durchbruch (12) in der inneren Schicht (8) ein Durchbruch (13) in der äußeren Schicht (7) angeordnet ist, der die Blase (11) mit der Umgebung verbindet.1. Packaging container with a degassing valve, which is formed from a multilayer packaging material with at least one flexible outer layer, in which the layers are firmly connected to one another except in a certain area in which they lie loosely on one another to form a bubble, the bubble being formed by at least one opening in the inner layer is connected to the inside of the container, characterized in that a breakthrough (13) is arranged in the outer layer (7) to offset the opening (12) in the inner layer (8) and the bladder ( 11) connects with the environment.
2. Verpackungsbehälter nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Durchbrüche (12, 13) einen Abstand von 3 bis 20 mm voneinander haben.2. Packaging container according to claim 1, characterized in that the two openings (12, 13) have a distance of 3 to 20 mm from each other.
3. Verpackungsbehälter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Durchbrücne die Form eines Schlitzes (12, 13), eines Ausschnittes oder einer Perforierung haben.3. Packaging container according to claim 1 or 2, characterized in that the openings have the shape of a slot (12, 13), a cutout or a perforation.
4. Verpackungsbehälter nach Anspruch 3, dadurch gekennzeichnet, daß die Perforierung mehrere nahe beieinanderliegende kleine Löcher umfaßt. 4. Packaging container according to claim 3, characterized in that the perforation comprises a plurality of closely spaced small holes.
PCT/DE1988/000127 1987-03-21 1988-03-09 Packaging receptacle with gas outlet vent WO1988007479A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK645288A DK645288A (en) 1987-03-21 1988-11-18 CONTAINER PACKAGING WITH EXHAUST VALVE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8704279U DE8704279U1 (en) 1987-03-21 1987-03-21
DEG8704279.7U 1987-03-21

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WO1988007479A1 true WO1988007479A1 (en) 1988-10-06

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DE (1) DE8704279U1 (en)
ES (1) ES2006117A6 (en)
WO (1) WO1988007479A1 (en)

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EP0661219A2 (en) * 1993-12-28 1995-07-05 Packs Co. Ltd. Wrapping device
ES2112121A1 (en) * 1994-04-14 1998-03-16 Balaguer Maquinaria Envase Package provided with structural gas outlet
EP0990592A1 (en) * 1998-09-28 2000-04-05 The Procter & Gamble Company Package having a venting system
WO2001021489A2 (en) * 1999-09-22 2001-03-29 The Procter & Gamble Company A gas-venting container
EP1422163A1 (en) * 2002-11-22 2004-05-26 Amcor Flexibles Europe A/S Food package for heating in an oven
WO2006012282A1 (en) * 2004-06-25 2006-02-02 The Procter & Gamble Company Flexible laminate having an integrated pressure release valve
US7244223B2 (en) 2003-05-30 2007-07-17 Avery Dennison Corporation Food bag release valve
WO2011003831A1 (en) 2009-07-10 2011-01-13 Amcor Flexibles Transpac B.V.B.A. Packaging material with integrated pressure relief valve
CN106927129A (en) * 2017-04-21 2017-07-07 东莞市康巢建材有限公司 A kind of packaging bag for emptying inner air
US20170320642A1 (en) * 2016-05-03 2017-11-09 LaserSharp FlexPak Services, LLC Coffee Bag Vent
US20190221140A1 (en) * 2018-01-15 2019-07-18 LaserSharp FlexPak Services, LLC Microchannel Device for Controlling Gas, Vapor, Pressure within a Package
US20190225402A1 (en) * 2018-01-15 2019-07-25 LaserSharp FlexPak Services, LLC Device for controlling gas, vapor, pressure within a package

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EP0661219A3 (en) * 1993-12-28 1995-09-06 Packs Co Ltd Wrapping device.
US5655842A (en) * 1993-12-28 1997-08-12 Packs Co., Ltd. Wrapping device
US5839832A (en) * 1993-12-28 1998-11-24 Packs Co. Ltd. Wrapping device
EP0661219A2 (en) * 1993-12-28 1995-07-05 Packs Co. Ltd. Wrapping device
ES2112121A1 (en) * 1994-04-14 1998-03-16 Balaguer Maquinaria Envase Package provided with structural gas outlet
EP0990592A1 (en) * 1998-09-28 2000-04-05 The Procter & Gamble Company Package having a venting system
WO2001021489A2 (en) * 1999-09-22 2001-03-29 The Procter & Gamble Company A gas-venting container
WO2001021489A3 (en) * 1999-09-22 2001-10-11 Procter & Gamble A gas-venting container
EP1422163A1 (en) * 2002-11-22 2004-05-26 Amcor Flexibles Europe A/S Food package for heating in an oven
WO2004048225A1 (en) * 2002-11-22 2004-06-10 Amcor Flexibles Europe A/S Food package for heating in an oven
US7399263B2 (en) 2003-05-30 2008-07-15 Avery Dennison Corporation Food bag release valve
US7244223B2 (en) 2003-05-30 2007-07-17 Avery Dennison Corporation Food bag release valve
WO2006012282A1 (en) * 2004-06-25 2006-02-02 The Procter & Gamble Company Flexible laminate having an integrated pressure release valve
WO2011003831A1 (en) 2009-07-10 2011-01-13 Amcor Flexibles Transpac B.V.B.A. Packaging material with integrated pressure relief valve
US20170320642A1 (en) * 2016-05-03 2017-11-09 LaserSharp FlexPak Services, LLC Coffee Bag Vent
US20170320169A1 (en) * 2016-05-03 2017-11-09 LaserSharp FlexPak Services, LLC Coffee Bag Vent
CN106927129A (en) * 2017-04-21 2017-07-07 东莞市康巢建材有限公司 A kind of packaging bag for emptying inner air
US20190221140A1 (en) * 2018-01-15 2019-07-18 LaserSharp FlexPak Services, LLC Microchannel Device for Controlling Gas, Vapor, Pressure within a Package
US20190225402A1 (en) * 2018-01-15 2019-07-25 LaserSharp FlexPak Services, LLC Device for controlling gas, vapor, pressure within a package
US10781023B2 (en) * 2018-01-15 2020-09-22 LaserSharp FlexPak Services, LLC Device for controlling gas, vapor, pressure within a package
US10783805B2 (en) 2018-01-15 2020-09-22 LaserSharp FlexPak Services, LLC Microchannel device for controlling gas, vapor, pressure within a package
CN111902343A (en) * 2018-01-15 2020-11-06 激光软包装服务有限公司 Device for controlling gas, steam and pressure in package

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ES2006117A6 (en) 1989-04-01

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