EP0023703A1 - Pressure relief valve for packing containers - Google Patents

Pressure relief valve for packing containers Download PDF

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Publication number
EP0023703A1
EP0023703A1 EP80104515A EP80104515A EP0023703A1 EP 0023703 A1 EP0023703 A1 EP 0023703A1 EP 80104515 A EP80104515 A EP 80104515A EP 80104515 A EP80104515 A EP 80104515A EP 0023703 A1 EP0023703 A1 EP 0023703A1
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EP
European Patent Office
Prior art keywords
valve
adhesive
underside
strip
thickness
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
EP80104515A
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German (de)
French (fr)
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EP0023703B1 (en
Inventor
Hans Peter Ast
Klaus Dr. Domke
Wolfgang Galsterer
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Priority to AT80104515T priority Critical patent/ATE3525T1/en
Publication of EP0023703A1 publication Critical patent/EP0023703A1/en
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Publication of EP0023703B1 publication Critical patent/EP0023703B1/en
Expired legal-status Critical Current

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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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/225—Pressure relief-valves incorporated in a container wall, e.g. valves comprising at least one elastic element

Definitions

  • the invention relates to a device for relieving the interior of a packaging container filled with roasted coffee or the like from inadmissible overpressure, with a valve covering a hole in the container in the form of a multi-layer composite label.
  • valve In order to preserve the aroma of coffee, when a bag is filled with coffee, the air in the packaging bag is expelled with nitrogen or the bag is evacuated. As the roasted coffee enclosed in the bag releases carbon dioxide over time, it creates an overpressure which must be compensated for so that the bag does not inflate or even bursts. On the one hand, gas should escape from the bag through the valve, but on the other hand no air should be able to penetrate the bag. It goes without saying that the valve complies with the food regulations.
  • the most commonly used containers, such as plastic bags consist of a composite film that has film layers made of aluminum and plastic or a polyester or cellulose as an outer layer. Another requirement is that the valves are insensitive to dust accumulation during application and use.
  • the object of the invention is therefore to provide a device of the type mentioned at the outset which fulfills the stated requirements and moreover can be produced by means of the known adhesive label production technology.
  • the device is characterized by a valve part which has a non-adhesive, strip-shaped valve zone covering the hole on its underside and an adhesive strip on the underside of each of the longitudinal edges thereof.
  • the valve part consists of a cover film which is coated on the underside with adhesive and a valve strip which is not adhesive on both sides and which is bonded to the central zone of the underside of the cover film.
  • valve strips and cover strips can be produced and applied without difficulty.
  • the valve strip with the cover strip basically fulfills the requirements mentioned.
  • the device is preferably characterized in that the valve part is in register with the small parts self-adhesive spacing strips are applied to the underside of the valve part, the thickness of which is greater than that of the valve part.
  • valve strips and cover strips are usually very thin.
  • the device is therefore preferably characterized in that between the wall of the packaging container and the valve part there is a base which is self-adhesive on the underside and is perforated in the region of the bag hole.
  • the Bais ensures the desired stability.
  • the valve strip is preferably made of polyethylene terephthalate and in particular has a thickness of 15 / um to up to 35 / um.
  • the cover strip preferably also consists of polyethylene terephthalate and in particular has a thickness of 15 / um to up to 35 / um.
  • the spacer strips are preferably made of hard polyvinyl chloride and preferably have a thickness of 150 / um to 250 / um.
  • the carrier strip is preferably made of hard polyvinyl chloride, and preferably has a thickness of 150 / um and 250 / um on.
  • the composite label can have any shape in principle, it is preferably limited in a circle for reasons of material savings and ease of processing.
  • valve hole is preferably eccentric to the circular boundary.
  • a bottom side with a silicone solid, non-hardening adhesive layer 3 provided transparent Hartpolyvinylchloridbahn 4 is rolled on a thickness of 200 / um. This composite web 2, 4 then runs through a lifting punch for total punching of several rows of valve holes 10 at equal intervals.
  • valve thickness of 15 / um and 35 / um set 14 from Polyähylenterephtalat.
  • the continuous valve strip 14 covers the valve holes 10 and projects laterally by a small amount. It is of the presence of layering an under-sided adhesive covering foil 16, for example from polyethylene terephthalate having a thickness of 15 / um and 35 / um with a lower-side adhesive layer of a thickness of 10 / um and 20 / um rolled, wherein the not covered by the valve strip 14 adhesive or adhesive strips firmly connect the cover film web 16 to the web 4.
  • the web 16 and the strips 14, 20, 24 are applied in laminating stations known per se.
  • the circular valves 38 designed as composite labels are punched out in a contour punching station and finally the composite material 2, 4, 14, 16, which surrounds the stationary valves 38, the so-called matrix, is pulled off and rolled up.
  • the holes 10 are located eccentrically between the circular outline 42 of the free-punched valves 38.
  • the carrier paper 2 has not been punched through by the contour punch in the contour punch station.
  • the carrier paper 2 with the labels on it is rolled up on a roll. Later, the backing paper 2 can be cut between the rows of valves 38. If desired, the longitudinal cuts 44 between the valves 38 can be made before winding.
  • all materials are preferably transparent.
  • the valve 38 which is manufactured according to the above-described production method and is designed as a composite label, has the following structure (FIG. 2):
  • the valve strip 14 lies loosely on the hole 10. It extends in one direction over the entire base 5 and leaves a circular section surface uncovered on both sides of its longitudinal edges.
  • the cover film which is cut out congruently from the cover film web 16 with the base 5 and which is coated on the entire surface with adhesive on the underside, is with its central zone with the valve strip 14 and with its edge zones with the anlie glued circular section surfaces of the base 5 glued.
  • Spacers 25 punched out of the spacer strips 20, 24 are glued to the edge zones glued to the base 5 and are coated on their underside with adhesive.
  • valves 38 with the adhesive layer 3 on the underside of the base 5 adhere to the carrier strip 2.
  • One valve 38 each is attached via a gas passage opening in a wall of a packaging container, for example a bag.
  • a gas overpressure develops in the bag as a result of the gas being released by the filling material, the gas acts through the hole 10 in FIG.
  • the spacers 25 ensure a free space for the bulging of the valve part 17.
  • the adhesive-free valve channel is produced by covering the valve part 17 with the thin valve strip 14.
  • Such a non-glued valve channel can also be created by a valve part in which the middle zone of its underside is free of adhesive from the outset.
  • the circular section zones adjoining on both sides are coated with adhesive.
  • a cover film web 16 is used, which is coated with adhesive in strips, the adhesive-free zones having a width which is somewhat larger than the width of the holes 10 in the base 5.
  • evaporating liquid for example silicone oil

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Closures For Containers (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)

Abstract

1. A pressure relief valve on a packaging container, in the form of a compound label closing an opening in the packaging container and comprising a flat, flexible cover foil (16) coated over the entire area of one side with adhesive and a valve strip (14) covering the opening and stuck to the cover foil (16) in the central zone and to which is connected a non-adhesive channel zone bounded by adhesive zones and extending to the outer edge of the cover foil (16), characterised in that, the valve strip (14) extends continuously in one piece covering the channel zone and in two opposite directions up to regions of the outer edge of the cover foil (16) opposite to one another.

Description

Die Erfindung betrifft eine Vorrichtung zur Entlastung des Innenraums eines mit geröstetem Kaffee o. dgl. gefüllten Verpackungsbehälters von unzulässigem Überdruck, mit einem ein Loch im Behälter abdeckenden Ventil in Form eines mehrschichtigen Verbundetiketts.The invention relates to a device for relieving the interior of a packaging container filled with roasted coffee or the like from inadmissible overpressure, with a valve covering a hole in the container in the form of a multi-layer composite label.

Der Anmelderin bekannt gewordene Verbundetiketten zu diesem Zweck weisen als wesentlichen Bestandteil eine besondere Ventilmasse auf. Eine solche Ventilmasse ist unangenehm zu verarbeiten und nach den bisherigen Erfahrungen unzuverlässig. Hierbei sind.die Forderungen zu berücksichtigen, die an ein solches Ventil gestellt werden.For this purpose, composite labels which have become known to the applicant have a special valve mass as an essential component. Such a valve mass is uncomfortable to work with and, based on previous experience, is unreliable. The requirements that are placed on such a valve must be taken into account.

Um das Aroma von Kaffee zu bewahren, wird bei Füllung eines Beutels mit Kaffee die Luft im Verpackungsbeutel mit Stickstoff ausgetrieben oder der Beutel evakuiert. Da der in dem Beutel eingeschlossene geröstete Kaffee im Laufe der Zeit Kohlendioxid abgibt, entsteht darin ein Überdruck, der ausgeglichen werden muß, damit der Beutel nicht aufbläht oder gar platzt. Einerseits soll also durch das Ventil aus dem Beutel Gas entweichen, andererseits aber in den Beutel keine Luft eindringen können. Eine selbstverständliche Forderung ist, daß das Ventil den lebensmittelrechtlichen Vorschriften genügt. Die meist verwendeten Behälter, wie Kunststoffbeutel bestehen aus einer Verbundfolie, die Folienlagen aus Aluminium und Kunststoff oder einem Polyester oder auch Zellglas als Außenschicht aufweisen. Eine weitere Forderung ist, daß die Ventile unempfindlich gegen Staubanfall beim Aufbringen und beim Gebrauch sind.In order to preserve the aroma of coffee, when a bag is filled with coffee, the air in the packaging bag is expelled with nitrogen or the bag is evacuated. As the roasted coffee enclosed in the bag releases carbon dioxide over time, it creates an overpressure which must be compensated for so that the bag does not inflate or even bursts. On the one hand, gas should escape from the bag through the valve, but on the other hand no air should be able to penetrate the bag. It goes without saying that the valve complies with the food regulations. The most commonly used containers, such as plastic bags, consist of a composite film that has film layers made of aluminum and plastic or a polyester or cellulose as an outer layer. Another requirement is that the valves are insensitive to dust accumulation during application and use.

Aufgabe der Erfindung ist es daher, eine Vorrichtung eingangs genannter Art anzugeben, die die genannten Forderungen erfüllt und überdies mit Mitteln der bekannten Haftetiketten-Herstellungstechnik zu fertigen ist.The object of the invention is therefore to provide a device of the type mentioned at the outset which fulfills the stated requirements and moreover can be produced by means of the known adhesive label production technology.

Zur Lösung dieser Aufgabe ist die Vorrichtung gekennzeichnet durch ein Ventilteil, das auf seiner Unterseite eine das Loch überdeckende nicht klebende, streifenförmige Ventilzone und beidseits deren Längsränder je einen unterseitig klebenden Haftstreifen aufweist.To achieve this object, the device is characterized by a valve part which has a non-adhesive, strip-shaped valve zone covering the hole on its underside and an adhesive strip on the underside of each of the longitudinal edges thereof.

Bei einer besonders einfach herstellbaren Vorrichtung,besteht das Ventilteil aus einer unterseitig mit Klebstoff vollflächig beschichteten Deckfolie und einem beidseitig nicht klebenden, mit der mittleren Zone der Unterseite der Deckfolie verklebten Ventilstreifen.In the case of a device which is particularly easy to manufacture, the valve part consists of a cover film which is coated on the underside with adhesive and a valve strip which is not adhesive on both sides and which is bonded to the central zone of the underside of the cover film.

Der Verbund aus Ventilstreifen und Deckstreifen ist ohne Schwierigkeiten herzustellen und aufzubringen. Der Ventilstreifen mit dem Deckstreifen erfüllt grundsätzlich die genannten Forderungen.The combination of valve strips and cover strips can be produced and applied without difficulty. The valve strip with the cover strip basically fulfills the requirements mentioned.

Um sicherzustellen, daß die flexiblen Ventilteile insbesondere beim Verpacken mehrerer dicht aneinander zu legender Beutel sich auswölben können, ist die Vorrichtung bevorzugt dadurch gekennzeichnet, daß auf dem Ventilteil in Deckung mit den klebenden Haftstreifen des Ventilteils unterseitig selbstklebende Abstandhaltestreifen aufgebracht sind, deren Dicke größer ist als die des Ventilteils.In order to ensure that the flexible valve parts can bulge, particularly when packing several pouches to be placed close together, the device is preferably characterized in that the valve part is in register with the small parts self-adhesive spacing strips are applied to the underside of the valve part, the thickness of which is greater than that of the valve part.

Die Ventilstreifen und Deckstreifen sind in der Regel sehr dünn. Um ein gut aufklebbares, festes Verbundetikett zu schaffen, ist daher die Vorrichtung bevorzugt dadurch gekennzeichnet, daß zwischen der Wand des Verpackungsbehälters und dem Ventilteil eine unterseitig selbstklebende, im Bereich des Beutelloches gelochte Basis liegt. Die Bais sorgt für die gewünschte Stabilität.The valve strips and cover strips are usually very thin. In order to create a stick-on, solid composite label, the device is therefore preferably characterized in that between the wall of the packaging container and the valve part there is a base which is self-adhesive on the underside and is perforated in the region of the bag hole. The Bais ensures the desired stability.

Der Ventilstreifen besteht bevorzugt aus Polyäthylenterephtalat und weist insbesondere eine Stärke von 15 /um bis 35 /um auf.The valve strip is preferably made of polyethylene terephthalate and in particular has a thickness of 15 / um to up to 35 / um.

Der Deckstreifen besteht bevorzugt ebenfalls aus Polyäthylenterephtalat und weist insbesondere eine Stärke von 15 /um bis 35 /um auf.The cover strip preferably also consists of polyethylene terephthalate and in particular has a thickness of 15 / um to up to 35 / um.

Die Abstandhaltestreifen bestehen bevorzugt aus hartem Polyvinylchlorid und weisen bevorzugt eine Stärke von 150 /um bis 250 /um auf.The spacer strips are preferably made of hard polyvinyl chloride and preferably have a thickness of 150 / um to 250 / um.

Der Trägerstreifen besteht bevorzugt aus hartem Polyvinylchlorid und weist bevorzugt eine Stärke von 150 /um bis 250 /um auf.The carrier strip is preferably made of hard polyvinyl chloride, and preferably has a thickness of 150 / um and 250 / um on.

Gleichwenn das Verbundetikett grundsätzlich beliebige Formen haben kann, ist es doch aus Gründen der Materialersparnis und der leichten Verarbeitbarkeit bevorzugt kreisförmig begrenzt.Although the composite label can have any shape in principle, it is preferably limited in a circle for reasons of material savings and ease of processing.

Um die eingangs erwähnte Öffnungsdruck- und Schließdruck-Charakteristik zu erhalten, liegt dabei das Ventilloch bevorzugt exzentrisch zur kreisförmigen Begrenzung.In order to obtain the opening pressure and closing pressure characteristics mentioned at the outset, the valve hole is preferably eccentric to the circular boundary.

Die Erfindung wird im folgenden an einem Ausführungsbeispiel erläutert. Es zeigen:

  • Fig. 1 den Werdegang der Herstellung der Ventile und
  • Fig. 2 ein Ventil schaubildlich im Querschnitt.
The invention is explained below using an exemplary embodiment. Show it:
  • Fig. 1 shows the history of the manufacture of the valves and
  • Fig. 2 shows a valve in cross section.

Auf eine oberseitig silikonisierte Trägerpapierbahn 2 wird eine unterseitig mit einer silikonfesten, nicht aushärtenden Klebstoffschicht 3 versehene, transparente Hartpolyvinylchloridbahn 4 einer Stärke von 200 /um aufgewalzt. Diese Verbundbahn 2, 4 durchläuft dann eine Hubstanze zur Totalstanzung mehrerer Reihen von Ventillöchern 10 in gleichen Abständen. •On a top side siliconized backing paper web 2 a bottom side with a silicone solid, non-hardening adhesive layer 3 provided transparent Hartpolyvinylchloridbahn 4 is rolled on a thickness of 200 / um. This composite web 2, 4 then runs through a lifting punch for total punching of several rows of valve holes 10 at equal intervals. •

Auf jede der Reihen der Ventillöcher 10 wird ein schmaler beidseitig nicht klebender Ventilstreifen 14 aus Polyähylenterephtalat einer Stärke von 15 /um bis 35 /um gelegt. Der durchgehende Ventilstreifen 14 deckt die Ventillöcher 10 ab und überragt diese seitlich um ein geringes Maß. Auf die vorhandene Schichtung wird darauf eine unterseitig klebende Deckfolienbahn 16, etwa aus Polyäthylenterephtalat einer Stärke von 15 /um bis 35 /um mit einer unterseitigen Klebstoffschicht einer Stärke von 10 /um bis 20 /um aufgewalzt, wobei die nicht von Ventilstreifen 14 abgedeckten Haft- oder Klebestreifen die Deckfolienbahn 16 mit der Bahn 4 fest verbinden.In each of the rows of the valve holes 10 on both sides of a narrow non-adhesive strip is a valve thickness of 15 / um and 35 / um set 14 from Polyähylenterephtalat. The continuous valve strip 14 covers the valve holes 10 and projects laterally by a small amount. It is of the presence of layering an under-sided adhesive covering foil 16, for example from polyethylene terephthalate having a thickness of 15 / um and 35 / um with a lower-side adhesive layer of a thickness of 10 / um and 20 / um rolled, wherein the not covered by the valve strip 14 adhesive or adhesive strips firmly connect the cover film web 16 to the web 4.

Auf den Verbund 2, 4, 14, 16 werden schließlich unterseitig klebende Abstandhaltestreifen 20, 24 aufgebracht, und zwar in Form von unterseitig klebenden Hartpolyvinylchloridbändern einer Stärke von etwa 200 /um. Diese Bänder haben eine Breite, die etwas kleiner ist als der Abstand der Ventillöcher 10 zwischen den einzelnen Reihen.Finally sided adhesive spacer strips 20, 24 a thickness of about 200 / um are applied to the composite 2, 4, 14, 16, in the form of below-sided adhesive Hartpolyvinylchloridbändern. These bands have a width which is somewhat smaller than the distance between the valve holes 10 between the individual rows.

Das Aufbringen der Bahn 16 und der Streifen 14, 20, 24 erfolgt in an sich bekannten Laminierstationen.The web 16 and the strips 14, 20, 24 are applied in laminating stations known per se.

Zuletzt werden in einer Konturstanzstation die kreisförmigen, als Verbundetiketten ausgebildeten Ventile 38 ausgestanzt und abschließend das Verbundmaterial 2, 4, 14, 16, das die stehenbleibenden Ventile 38 umschließt, die sogenannte Matrix, abgezogen und aufgerollt. Wie aus Fig. 1 ersichtlich, liegen die Löcher 10 exzentrisch zwischen dem kreisförmigen Umriß 42 der freigestanzten Ventile 38.Finally, the circular valves 38 designed as composite labels are punched out in a contour punching station and finally the composite material 2, 4, 14, 16, which surrounds the stationary valves 38, the so-called matrix, is pulled off and rolled up. As can be seen from FIG. 1, the holes 10 are located eccentrically between the circular outline 42 of the free-punched valves 38.

Das Trägerpapier 2 ist durch die Konturstanze in der Konturstanzstation nicht durchstanzt worden. Das Trägerpapier 2 mit den auf ihm befindlichen Etiketten wird auf eine Rolle aufgerollt. Später kann das Trägerpapier 2 zwischen den Reihen der Ventile 38 durchschnitten werden. Falls gewünscht, können die Längsschnitte 44 zwischen den Ventilen 38 schon vor dem Aufwickeln vorgenommen werden.The carrier paper 2 has not been punched through by the contour punch in the contour punch station. The carrier paper 2 with the labels on it is rolled up on a roll. Later, the backing paper 2 can be cut between the rows of valves 38. If desired, the longitudinal cuts 44 between the valves 38 can be made before winding.

Bevorzugt sind alle Materialien mit Ausnahme der Trägerpapierbahn 2 transparent.With the exception of the carrier paper web 2, all materials are preferably transparent.

Das nach der oben beschriebenen Herstellungsweise gefertigte, als Verbundetikett ausgebildete Ventil 38 hat folgenden Aufbau (Fig. 2):The valve 38, which is manufactured according to the above-described production method and is designed as a composite label, has the following structure (FIG. 2):

Auf einer ringförmigen, steifen Basis 5 aus der Bahn 4 mit dem exzentrisch angeordneten Loch 10 liegt der Ventilstreifen 14 das Loch 10 deckend lose auf. Er erstreckt sich in einer Richtung über die ganze Basis 5 und läßt beidseitig seiner Längsränder je eine Kreisabschnittsfläche unbedeckt. Die aus der Deckfolienbahn 16 mit der Basis 5 deckungsgleich ausgeschnittene Deckfolie, die unterseitig ganzflächig mit Klebstoff beschichtet ist, ist mit ihrer mittleren Zone mit dem Ventilstreifen 14 und mit ihren Randzonen mit den anliegenden Kreisabschnittsflächen der Basis 5 verklebt. Auf die mit der Basis 5 verklebten Randzonen sind aus den Abstandhaltestreifen 20, 24 gestanzte Abstandhalter 25 geklebt, die auf ihrer Unterseite mit Klebstoff beschichtet sind.On an annular, rigid base 5 from the web 4 with the eccentrically arranged hole 10, the valve strip 14 lies loosely on the hole 10. It extends in one direction over the entire base 5 and leaves a circular section surface uncovered on both sides of its longitudinal edges. The cover film, which is cut out congruently from the cover film web 16 with the base 5 and which is coated on the entire surface with adhesive on the underside, is with its central zone with the valve strip 14 and with its edge zones with the anlie glued circular section surfaces of the base 5 glued. Spacers 25 punched out of the spacer strips 20, 24 are glued to the edge zones glued to the base 5 and are coated on their underside with adhesive.

Für den Transport und zum Zuführen der Ventile 38 zu Verpackungsbehältern haften die Ventile 38 mit der Klebstoffschicht 3 auf der Unterseite der Basis 5 auf dem Trägerstreifen 2 abschälbar. Je ein Ventil 38 wird über eine Gasdurchtrittsöffnung in einer Wand eines Verpackungsbehälters beispielsweise eines Beutels befestigt. Bei Entwicklung eines Gasüberdrucks in dem Beutel infolge der Abgabe von Gas seitens des Füllguts, wirkt das Gas durch das Loch 10 der . Basis 5 auf das aus Deckfolie 16 und dem Ventilstreifen 14 bestehende Ventilteil 17 und wölbt dieses bei Überdruck naah oben, so daß sich entlang des nicht klebenden Ventilstreifens 14 und der von diesem bedeckten mittleren Zone der Basis 5 vom Loch 10 ausgehend nach beiden Richtungen ein Kanal bildet, durch die überschüssiges Gas abfließen kann. Bei mehreren in einer Sammelpackung aneinanderanliegenden Beutelpackungen, sichern die Abstandhalter 25 einen Freiraum für das Auswölben des Ventilteils 17.For the transport and for feeding the valves 38 to packaging containers, the valves 38 with the adhesive layer 3 on the underside of the base 5 adhere to the carrier strip 2. One valve 38 each is attached via a gas passage opening in a wall of a packaging container, for example a bag. When a gas overpressure develops in the bag as a result of the gas being released by the filling material, the gas acts through the hole 10 in FIG. Base 5 on the valve sheet 17 consisting of cover sheet 16 and the valve strip 14 and bulges this near the top in the event of excess pressure, so that a channel extends in both directions along the non-adhesive valve strip 14 and the central zone of the base 5 covered by the latter in both directions forms through which excess gas can drain. If there are several pouch packs lying against one another in a multipack, the spacers 25 ensure a free space for the bulging of the valve part 17.

Bei dem beschriebenen Ausführungsbeispiel ist der klebstofffreie Ventilkanal durch Abdecken des Ventilteils 17 durch den dünnen Ventilstreifen 14 erzeugt. Ein solcher nicht verklebter Ventilkanal kann aber auch durch ein Ventilteil geschaffen werden, bei dem die mittlere Zone seiner Unterseite von vornherein klebstofffrei ist,. dagegen die sich beidseits anschließenden Kreisabschnittszonen mit Klebstoff beschichtet sind. Für die Herstellung einer solchen Ausführungsform wird eine Deckfolienbahn 16 verwendet, die streifenförmig mit Klebstoff beschichtet ist, wobei die klebstofffreien Zonen eine Breite aufweisen, die etwas größer als die Weite der Löcher 10 in der Basis 5 ist.In the exemplary embodiment described, the adhesive-free valve channel is produced by covering the valve part 17 with the thin valve strip 14. Such a non-glued valve channel can also be created by a valve part in which the middle zone of its underside is free of adhesive from the outset. on the other hand, the circular section zones adjoining on both sides are coated with adhesive. For the production of such an embodiment, a cover film web 16 is used, which is coated with adhesive in strips, the adhesive-free zones having a width which is somewhat larger than the width of the holes 10 in the base 5.

Um die Dichtigkeit des Ventils zu erhöhen, kann in den Ventilkanal zwischen der klebstofffreien mittleren Zone auf der Unterseite des Ventilteils 17 und der Oberseite der Basis 5 eine nur wenig verdunstende Flüssigkeit, beispielsweise Silikonöl eingebracht werden.In order to increase the tightness of the valve, only a little evaporating liquid, for example silicone oil, can be introduced into the valve channel between the adhesive-free middle zone on the underside of the valve part 17 and the top of the base 5.

Claims (9)

1. Vorrichtung zur Entlastung des Innenraums eines mit geröstetem Kaffee o. dgl. gefüllten Verpackungsbehälters von unzulässigem Überdruck, mit einem ein Loch im Behälter abdeckenden Ventil in Form eines mehrschichtigen Verbundeti- - ketts, gekennzeichnet durch ein Ventilteil (17), das auf seiner Unterseite eine das Loch überdeckende, nicht klebende, streifenförmige Ventilzone und beidseits deren Längsränder je einen unterseitig klebenden Haftstreifen aufweist.1.Device for relieving the interior of a packaging container filled with roasted coffee or the like of inadmissible excess pressure, with a valve covering a hole in the container in the form of a multilayer composite label, characterized by a valve part (17) on its underside a non-adhesive, strip-shaped valve zone covering the hole and on both sides of its longitudinal edges each having an adhesive strip on the underside. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Ventilteil (17) aus einer unterseitig mit Klebstoff vollflächig beschichteten Deckfolie (16) und einem beidseitig nicht klebenden, mit der mittleren Zone der Unterseite der Deckfolie verklebten Ventilstreifen (14) besteht.2. Apparatus according to claim 1, characterized in that the valve part (17) consists of a cover film (16) coated on the underside with adhesive over its entire surface and a valve strip (14) which is not adhesive on both sides and is bonded to the central zone of the underside of the cover film. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß auf dem Ventilteil (17) in Deckung mit den klebenden Haftstreifen des Ventilteils (17) unterseitig selbstklebende Abstandhaltestreifen (25) aufgebracht sind, deren Dicke größer ist als die des Ventilteils (17).3. Apparatus according to claim 1 or 2, characterized in that on the valve part (17) in register with the adhesive adhesive strips of the valve part (17) on the underside self-adhesive spacer strips (25) are applied, the thickness of which is greater than that of the valve part (17) . 4. Vorrichtung nach einem der vorhergehenden Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zwischen der Wand des Verpakkungsbehälters und dem Ventilteil (17) eine unterseitig selbstklebende, im Bereich des Beutelloches (10) gelochte steife Basis (5) angeordnet ist, mit der das Ventilteil (17) verklebt ist.4. Device according to one of the preceding claims 1 to 3, characterized in that between the wall of the packaging container and the valve part (17) an underside self-adhesive, in the region of the bag hole (10) perforated rigid base (5) is arranged, with which Valve part (17) is glued. 5. Vorrichtung nach einem der vorhergehenden Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Ventilstreifen (14) aus Polyäthylenterephtalat besteht und insbesondere eine Stärke von 15 /um bis 35 /um aufweist.5. Device according to one of the preceding claims 1 to 3, characterized in that the valve strip (14) consists of polyethylene terephthalate and in particular has a thickness of 15 / um to 35 / um. 6. Vorrichtung nach einem der vorhergehenden Ansprüche 1 bis 3, dadurch g.ekennzeichnet, daß die Deckfolie (16) aus Polyäthylenterephtalat besteht und insbesondere eine Stärke von 15 /um bis 35 /um aufweist.6. Device according to one of the preceding claims 1 to 3, characterized in that the cover film (16) consists of polyethylene terephthalate and in particular has a thickness of 15 / um to 35 / um. 7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Abstandhaltestreifen (25) aus hartem Polyvinylchlorid bestehen und insbesondere eine Stärke von 150 /um bis 250 /um aufweisen.7. Device according to one of the preceding claims, characterized in that the spacer strips (25) consist of hard polyvinyl chloride and in particular have a thickness of 150 / um to 250 / um. 8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Basis (5) aus hartem Polyvinylchlorid besteht und insbesondere eine Stärke von 150 /um bis 250 /um aufweist.8. Device according to one of the preceding claims, characterized in that the base (5) consists of hard polyvinyl chloride and in particular has a thickness of 150 / um to 250 / um. 9. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das durch die Streifen gebildete Ventil (38) kreisförmig begrenzt ist.9. Device according to one of the preceding claims, characterized in that the valve (38) formed by the strips is limited in a circle.
EP80104515A 1979-08-06 1980-07-31 Pressure relief valve for packing containers Expired EP0023703B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80104515T ATE3525T1 (en) 1979-08-06 1980-07-31 RELIEF VALVE FOR PACKAGING CONTAINER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2931850 1979-08-06
DE19792931850 DE2931850A1 (en) 1979-08-06 1979-08-06 DEVICE FOR RELIEFING THE INTERIOR OF A ROASTED COFFEE OR THE LIKE. FILLED PLASTIC BAG OF INADMISSIBLE PRESSURE

Publications (2)

Publication Number Publication Date
EP0023703A1 true EP0023703A1 (en) 1981-02-11
EP0023703B1 EP0023703B1 (en) 1983-05-25

Family

ID=6077751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104515A Expired EP0023703B1 (en) 1979-08-06 1980-07-31 Pressure relief valve for packing containers

Country Status (5)

Country Link
EP (1) EP0023703B1 (en)
JP (1) JPS5934585B2 (en)
AT (1) ATE3525T1 (en)
DE (2) DE2931850A1 (en)
ES (1) ES494004A0 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149695A1 (en) * 1984-01-21 1985-07-31 Beiersdorf Aktiengesellschaft Pressure-release valve for a packaging container
FR2583386A1 (en) * 1985-06-12 1986-12-19 Sartec Service Ind Valve for package and package comprising such a valve.
EP0274553A1 (en) * 1987-01-13 1988-07-20 Thomas Philipp Method of manufacturing and packing a fresh product of vegetables and fruits and the like
EP0499783A1 (en) * 1991-02-16 1992-08-26 Robert Bosch Gmbh Overpressure valve for packages
WO1993001103A1 (en) * 1991-07-08 1993-01-21 W.L. Gore & Associates, Inc. Liquid non-leaking gas-venting seal for a container containing liquid
EP0710607A1 (en) 1994-11-03 1996-05-08 Robert Bosch Gmbh Packaging bag with pressure relief valve
FR2796923A1 (en) 1999-07-29 2001-02-02 Proplast Valve for package containing food or other product destined to be heated has seal of paraffin wax or similar which softens on heating
WO2001009003A1 (en) * 1999-07-29 2001-02-08 Proplast Valve and package for cooking food
US7051762B2 (en) * 2001-04-30 2006-05-30 Micvac Ab One-way valve
DE102006016594A1 (en) * 2006-04-06 2007-10-18 Tesa Ag Pressure relief valve for a packaging container
US7331715B2 (en) * 2004-01-26 2008-02-19 The Glad Products Company Valve element
US7490623B2 (en) 2004-10-07 2009-02-17 Celomat S.A. Pressure-relief one-way valve applicable to a package containing a gas-releasing product, wherein there coexist a fluid medium and an air bubble, and a package including said valve
US8093975B2 (en) * 2006-09-08 2012-01-10 Siemens Aktiengesellschaft Semiconductor switching module optimized for resistance to short circuits
US20220204238A1 (en) * 2019-06-03 2022-06-30 Yoon Sub SOH Gas discharge valve for packaging material

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057069A (en) * 1983-09-05 1985-04-02 Fujimori Kogyo Kk Vent valve
JPS6290362U (en) * 1985-11-27 1987-06-09
DE4243020A1 (en) * 1992-12-18 1994-06-30 Bosch Gmbh Robert Pressure relief valve for packaging containers
DE4446104C2 (en) * 1994-12-22 1997-04-03 Sisi Werke Gmbh Method and device for producing a beverage container
JP2002308291A (en) * 2001-04-17 2002-10-23 Hisashi Tanaka Packaging plastic film with check valve, and its manufacturing method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2821338A (en) * 1954-10-21 1958-01-28 Melvin R Metzger Valve-equipped container
DE2331862A1 (en) * 1973-06-22 1975-01-16 Hesser Ag Maschf Pressure release valve for carton - flexible membrane under perforated disc
DE2716299A1 (en) * 1977-04-13 1978-10-19 Bosch Gmbh Robert PRESSURE COMPENSATION VALVE FOR A PACKAGING CONTAINER

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946502A (en) * 1954-11-10 1960-07-26 Melvin R Metzger Valve-equipped containers
DE2537317A1 (en) * 1975-08-21 1977-02-24 Hesser Ag Maschf PRESSURE COMPENSATING VALVE FOR A PACKAGING CONTAINER

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2821338A (en) * 1954-10-21 1958-01-28 Melvin R Metzger Valve-equipped container
DE2331862A1 (en) * 1973-06-22 1975-01-16 Hesser Ag Maschf Pressure release valve for carton - flexible membrane under perforated disc
DE2716299A1 (en) * 1977-04-13 1978-10-19 Bosch Gmbh Robert PRESSURE COMPENSATION VALVE FOR A PACKAGING CONTAINER

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149695A1 (en) * 1984-01-21 1985-07-31 Beiersdorf Aktiengesellschaft Pressure-release valve for a packaging container
FR2583386A1 (en) * 1985-06-12 1986-12-19 Sartec Service Ind Valve for package and package comprising such a valve.
EP0274553A1 (en) * 1987-01-13 1988-07-20 Thomas Philipp Method of manufacturing and packing a fresh product of vegetables and fruits and the like
EP0499783A1 (en) * 1991-02-16 1992-08-26 Robert Bosch Gmbh Overpressure valve for packages
US5263777A (en) * 1991-02-16 1993-11-23 Robert Bosch Gmbh Overpressure valve for packaging containers
WO1993001103A1 (en) * 1991-07-08 1993-01-21 W.L. Gore & Associates, Inc. Liquid non-leaking gas-venting seal for a container containing liquid
AU647962B2 (en) * 1991-07-08 1994-03-31 W.L. Gore & Associates, Inc. Liquid non-leaking gas-venting seal for a container containing liquid
EP0710607A1 (en) 1994-11-03 1996-05-08 Robert Bosch Gmbh Packaging bag with pressure relief valve
FR2796923A1 (en) 1999-07-29 2001-02-02 Proplast Valve for package containing food or other product destined to be heated has seal of paraffin wax or similar which softens on heating
WO2001009003A1 (en) * 1999-07-29 2001-02-08 Proplast Valve and package for cooking food
US7051762B2 (en) * 2001-04-30 2006-05-30 Micvac Ab One-way valve
US7331715B2 (en) * 2004-01-26 2008-02-19 The Glad Products Company Valve element
US7490623B2 (en) 2004-10-07 2009-02-17 Celomat S.A. Pressure-relief one-way valve applicable to a package containing a gas-releasing product, wherein there coexist a fluid medium and an air bubble, and a package including said valve
DE102006016594A1 (en) * 2006-04-06 2007-10-18 Tesa Ag Pressure relief valve for a packaging container
US8093975B2 (en) * 2006-09-08 2012-01-10 Siemens Aktiengesellschaft Semiconductor switching module optimized for resistance to short circuits
US20220204238A1 (en) * 2019-06-03 2022-06-30 Yoon Sub SOH Gas discharge valve for packaging material
US11987435B2 (en) * 2019-06-03 2024-05-21 Yoon Sub SOH Gas discharge valve for packaging material

Also Published As

Publication number Publication date
ES8107111A1 (en) 1981-10-01
DE3063481D1 (en) 1983-07-07
ES494004A0 (en) 1981-10-01
JPS5934585B2 (en) 1984-08-23
ATE3525T1 (en) 1983-06-15
JPS5632244A (en) 1981-04-01
EP0023703B1 (en) 1983-05-25
DE2931850A1 (en) 1981-02-19

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