EP1802537B1 - Pressure relief valve for a packaging container - Google Patents

Pressure relief valve for a packaging container Download PDF

Info

Publication number
EP1802537B1
EP1802537B1 EP05786948A EP05786948A EP1802537B1 EP 1802537 B1 EP1802537 B1 EP 1802537B1 EP 05786948 A EP05786948 A EP 05786948A EP 05786948 A EP05786948 A EP 05786948A EP 1802537 B1 EP1802537 B1 EP 1802537B1
Authority
EP
European Patent Office
Prior art keywords
region
pressure relief
relief valve
depression
valve according
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.)
Active
Application number
EP05786948A
Other languages
German (de)
French (fr)
Other versions
EP1802537A1 (en
Inventor
Herbert Stotkiewitz
Hans-Peter Stadel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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 EP1802537A1 publication Critical patent/EP1802537A1/en
Application granted granted Critical
Publication of EP1802537B1 publication Critical patent/EP1802537B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
    • Y10T137/4358—Liquid supplied at valve interface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7908—Weight biased
    • Y10T137/7909—Valve body is the weight
    • Y10T137/7913—Guided head
    • Y10T137/7914—Cage

Definitions

  • the invention relates to a pressure relief valve for a packaging container according to the preamble of claim 1.
  • the lowest possible opening pressure of the pressure relief valve is required, that is, the valve membrane should be as easy as possible to lift off the body to form a passageway.
  • the pressure relief valve according to the invention for a packaging container with the features of claim 1 has the advantage that it opens at relatively low pressures in the package inside (for example, in the order of 5 mbar), that is, in the inside of the package resulting gases even at a relatively low pressure to the outside passes.
  • This is achieved according to the invention substantially by an at least partially unplane design of the body in the overlap area with the valve membrane. As a result, the adhesion forces between the base body and the valve membrane are reduced as a result of the interposed sealing medium, so that the lifting of the valve membrane is facilitated.
  • FIG. 1 a first pressure relief valve 10 is shown.
  • the pressure relief valve 10 is mounted on the inside 2 of a packaging material wall 1, which forms by appropriate folding and sealing a packaging container or a packaging bag for packing gas-releasing food such as coffee.
  • the pressure relief valve 10 has a round body 11 made of plastic by injection molding.
  • the main body 11 has a peripheral edge region 12, on whose inner side 2 of the packaging material wall 1 facing end face, for example, a circumferential, triangular in cross-section elevation 13 is formed.
  • the elevation 13 By means of the elevation 13, the base body 11 on the inside 2 tightly fasten the packaging material wall 1 by ultrasonic welding.
  • the use of conventional adhesives or a contact seal is conceivable in order to fasten the base body 11 with its edge region 12 tightly with the inside 2 of the packaging material wall 1.
  • a plurality of holes, cuts or perforations 5 are preferably formed in the packaging material wall 1, which allow the passage of gas produced by the food to the outside of the packaging, that is to the ambient air.
  • the base body 11 has a base region 15 which is lowered in relation to the edge region 12.
  • the base region 15 is not flat or flat on the side facing the packaging material wall 2, but arched.
  • a concave curvature is used, such that the central region 16 of the base region 15 to the packaging material wall 2 has a greater distance than the outer region 17 of the base region 15.
  • a recess 20 formed on the packaging material 2 side facing.
  • the recess 20 has in plan view ( FIG. 2 ) approximately in the form of an "8".
  • each of the two through holes 23, 24 is surrounded by a tower-like elevation 25, 26, which is circular in plan view. How best of the FIG. 4 can be seen, each of the two elevations 25, 26 has an inlet radius 27, wherein the upper end face 28, 29 of the elevation 25, 26 runs at a level which is just below the height of the base region 15 immediately adjacent to the depression 20.
  • elevations 25, 26 can also extend up to the level of the base area 15 in the central area 16, or even beyond.
  • a further recess 30 is formed, which extends to the edge region 12. Furthermore, on the side facing away from the packing material wall 2 of the base body 11, a preferably round recess 32 is formed, which covers the two through holes 23, 24, and in which a filter element 34 is attached in the form of a nonwoven or the like.
  • the nonwoven fabric 34 serves to prevent food particles from entering and clogging the through holes 23, 24 when the particle size is smaller than the diameter of the through holes 23, 24.
  • a sealing agent in the form of a thin silicone oil layer 36 is applied in the region of the base region 15.
  • the silicone oil layer 36 serves as a sealing and connecting means between the main body 11 and a likewise preferably round trained valve membrane 40.
  • the diameter of the valve membrane 40 is slightly smaller than the inner diameter, which is bounded by the edge region 12 of the base body 11.
  • the valve membrane 40 is also made of plastic and is flexible to a certain extent due to the selected thickness.
  • a constriction 41 running around in the exemplary embodiment is integrally formed on the main body 11 on the inside of the edge region 12.
  • a circumferential constriction 41 are also Only partially arranged retaining fingers or the like conceivable.
  • the relief valve 10 so far described functions as follows:
  • the gas produced by the food during the laking process due to chemical conversion processes increases the package internal pressure until it eventually exceeds the atmospheric pressure surrounding the package.
  • this overpressure has reached, for example, a size of 5 mbar, this causes the valve membrane 40 to lift off initially in the region of the two tips 43, 44 of the constriction region 21 of the recess 20.
  • valve membrane 40 As soon as the overpressure has been reduced, the valve membrane 40, starting from its edge region, rests against the main body 11 again, wherein the silicone oil layer 36 finally causes a seal due to adhesion forces, which also prevents the entry of ambient air into the interior of the package.
  • the lifting or lifting of the valve membrane 40 is facilitated by the fact that in the central region 16, in which the recess 20 is located, the distance of the base region 15 to the valve membrane 40 due to the concave design of the base region 15 is relatively large such that the adhesion forces (due to the stiffness of the valve membrane 40) between the valve membrane 40 and the base body 11, relative to the outer region 17, are reduced. As a result, the lifting of the valve diaphragm 40 in the region of the tips 43, 44 is supported.
  • the pressure relief valve 10 described so far allows gas already at a relatively low (compared to the environment) Overpressure escapes from inside the package.
  • the overpressure valve 10 also seals off particularly well from the outside, since the atmospheric pressure acting on the valve membrane 40 via the perforations 5 additionally presses the valve membrane 40 onto the two elevations 25, 26 and thus closes the through-holes 23, 24. Furthermore, the circumferential depression 30 causes silicone oil to collect in this region or serves as a reservoir for silicone oil, which can thus be supplied to the valve membrane 40 again, so that a relatively uniform wetting of the valve membrane 40 on the base region 15 faces Side with the silicone oil.
  • second pressure relief valve 50 is on both sides of the recess 51 each have a tapered outwardly recess 52, 53 from. Outside the two depressions 52, 53, the base region 55 of the main body 56 is planar or flat. The fact that the two depressions 52, 53 emanate from the two tips 57, 58 of the also "8" -shaped recess 51, a particularly easy lifting of the valve diaphragm 59 is also made possible in the second pressure relief valve 50.
  • the recess 61 corresponding to the first pressure relief valve 10 is circular, but extends only to the edge of the recess 62 zoom.
  • overpressure valves 65 and 66 is in the region of the base region 67, 68 no recess or the like arranged, but is by injection molding, for example, two elongate webs 69 (FIG. FIG. 9 ) or a survey 70 ( FIG. 10 ) a greater distance between the base body 67, 68 and he the main body 67, 68 covering the valve membrane causes.
  • a greater distance between the base body 67, 68 and he the main body 67, 68 covering the valve membrane causes.
  • the survey 70 also reduces the adhesion forces between the body 67, 68 and the valve membrane to facilitate lifting the valve diaphragm, and thus a better response of the pressure relief valve 65, 66 at a positive pressure inside the package to effect.
  • the relief valves 10, 50, 60, 65 and 66 described so far can be modified or modified in many ways, without departing from the spirit of the invention. This consists, in particular, of facilitating the lifting of the valve membrane by increasing the distance between the valve membrane and the main body by means of a special design of the respective base region or of the overlap region with the valve membrane.

Description

Stand der TechnikState of the art

Die Erfindung betrifft ein Überdruckventil für einen Verpackungsbehälter nach dem Oberbegriff des Anspruchs 1.The invention relates to a pressure relief valve for a packaging container according to the preamble of claim 1.

Ein derartiges Überdruckventil ist aus der DE 102 56 245 A1 bekannt. Bei dem bekannten Überdruckventil weist die Ventilmembran in ihrem Überdeckungsbereich mit dem Grundkörper, mit Ausnahme im Bereich einer Vertiefung, stets denselben Abstand auf. Dadurch lässt sich eine sehr gute Abdichtung erzielen, das heißt, dass Umgebungsluft nicht in das Innere des Verpackungsbehälters eintreten kann. Dies rührt daher, dass durch die plane Anlage der Venntilmebran an dem Grundkörper das zwischen dem Grundkörper und der Ventilmembran angeordnete Dichtmittel in Form von Silikonöl für relativ hohe Adhäsionskräfte zwischen der Ventilmembran und dem Grundkörper sorgt. Um ein besseres Ansprechen des Überdruckventils beim Auftreten eines Überdrucks im Packungsinneren durch Entstehen von Gasen erzielen zu können, ist jedoch ein möglichst geringer Öffnungsdruck des Überdruckventils erforderlich, das heißt, dass die Ventilmembran möglichst leicht vom Grundkörper zur Bildung eines Durchlasskanales abheben soll.Such a pressure relief valve is out of DE 102 56 245 A1 known. In the known pressure relief valve, the valve membrane in its coverage area with the base body, except in the region of a depression, always at the same distance. As a result, a very good seal can be achieved, that is, ambient air can not enter the interior of the packaging container. This is due to the fact that the planar arrangement of the Vennilmebran on the base body, the sealing means arranged in the form of silicone oil between the base body and the valve membrane ensures relatively high adhesion forces between the valve membrane and the base body. In order to achieve a better response of the pressure relief valve in the occurrence of an overpressure in the interior of the package by the formation of gases, however, the lowest possible opening pressure of the pressure relief valve is required, that is, the valve membrane should be as easy as possible to lift off the body to form a passageway.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Überdruckventil für einen Verpackungsbehälter mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass es bereits bei relativ geringen Überdrücken im Packungsinneren (beispielsweise in der Größenordnung von 5 mbar) öffnet, das heißt im Packungsinneren entstehende Gase bereits bei einem relativ geringen Überdruck nach Außen leitet. Dies wird erfindungsgemäß im Wesentlichen durch eine zumindest bereichsweise unplane Gestaltung des Grundkörpers im Überdeckungsbereich mit der Ventilmembran erzielt. Dadurch werden die Adhäsionskräfte zwischen dem Grundkörper und der Ventilmebran infolge des dazwischen angeordneten Dichtmediums herabgesetzt, so dass das Abheben der Ventilmembran erleichtert wird.The pressure relief valve according to the invention for a packaging container with the features of claim 1 has the advantage that it opens at relatively low pressures in the package inside (for example, in the order of 5 mbar), that is, in the inside of the package resulting gases even at a relatively low pressure to the outside passes. This is achieved according to the invention substantially by an at least partially unplane design of the body in the overlap area with the valve membrane. As a result, the adhesion forces between the base body and the valve membrane are reduced as a result of the interposed sealing medium, so that the lifting of the valve membrane is facilitated.

Vorteilhafte Weiterbildungen des erfindungsgemäßen Überdruckventils für einen Verpackungsbehälter sind in den Unteransprüchen angegeben. Besonders vorteilhaft ist es, das wenigstens eine am Grund des Grundkörpers ausgebildete, im Bereich der Vertiefung angeordnete Durchgangsloch von einer turmartigen Erhebung zu umgeben. Dadurch wird erreicht, dass der Atmosphärendruck, welcher von außen auf das Ventil einwirkt, die Ventilmembran im Bereich des wenigstens einen Durchgangslochs auf die Erhebung drückt und somit das Durchgangsloch verschließt, so dass das Eindringen von Luft von außen in das Packungsinnere sicher verhindert wird.Advantageous developments of the pressure relief valve according to the invention for a packaging container are specified in the subclaims. It is particularly advantageous to surround the at least one through-hole, which is formed at the base of the base body and is arranged in the region of the depression, from a tower-like elevation. This ensures that the atmospheric pressure, which acts on the valve from the outside, presses the valve membrane in the region of the at least one through hole on the survey and thus closes the through hole, so that the penetration of air from outside into the inside of the package is reliably prevented.

Zeichnungdrawing

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden nachfolgend näher erläutert. Es zeigen:

  • Figur 1 einen Längsschnitt durch ein erstes erfindungsgemäßes Überdruckventil im Bereich einer Packstoffwand eines Verpackungsbehälters,
  • Figur 2 eine Draufsicht auf das Überdruckventil nach Figur 1,
  • Figur 3 ein Detail des Überdruckventils nach Figur 1 im Bereich des Randbereiches des Überdruckventils,
  • Figur 4 ein Detail des Überdruckventils nach Figur 1 im Bereich einer turmartigen Erhebung,
  • Figur 5 eine Draufsicht auf ein zweites erfindungsgemäßes Überdruckventil,
  • Figur 6 einen Schnitt in der Ebene VI - VI der Figur 5
  • Figur 7 eine Draufsicht auf ein drittes erfindungsgemäßes Überdruckventil,
  • Figur 8 einen Schnitt in der Ebene VIII - VIII der Figur 7 und
  • Figuren 9 und 10 Draufsichten auf weitere Überdruckventile.
Embodiments of the invention are illustrated in the drawings and are explained in more detail below. Show it:
  • FIG. 1 a longitudinal section through a first inventive pressure relief valve in the region of a packaging material wall of a packaging container,
  • FIG. 2 a plan view of the pressure relief valve after FIG. 1 .
  • FIG. 3 a detail of the pressure relief valve after FIG. 1 in the region of the edge region of the pressure relief valve,
  • FIG. 4 a detail of the pressure relief valve after FIG. 1 in the area of a tower-like survey,
  • FIG. 5 a plan view of a second inventive pressure relief valve,
  • FIG. 6 a section in the plane VI - VI of FIG. 5
  • FIG. 7 a top view of a third inventive pressure relief valve,
  • FIG. 8 a section in the plane VIII - VIII of FIG. 7 and
  • FIGS. 9 and 10 Top views of further pressure relief valves.

Beschreibung der AusführungsbeispieleDescription of the embodiments

In der Figur 1 ist ein erstes Überdruckventil 10 dargestellt. Das Überdruckventil 10 ist auf der Innenseite 2 einer Packstoffwand 1 befestigt, die durch entsprechendes Falten und Siegeln einen Verpackungsbehälter bzw. einen Verpackungsbeutel zum Abpacken von Gas abgebenden Lebensmittel wie beispielsweise Kaffee bildet.In the FIG. 1 a first pressure relief valve 10 is shown. The pressure relief valve 10 is mounted on the inside 2 of a packaging material wall 1, which forms by appropriate folding and sealing a packaging container or a packaging bag for packing gas-releasing food such as coffee.

Das Überdruckventil 10 weist einen runden, aus Kunststoff im Spritzverfahren hergestellten Grundkörper 11 auf. Der Grundkörper 11 hat einen umlaufenden Randbereich 12, an dessen der Innenseite 2 der Packstoffwand 1 zugewandter Stirnseite beispielsweise eine umlaufende, im Querschnitt dreieckförmige Erhebung 13 ausgebildet ist. Mittels der Erhebung 13 lässt sich der Grundkörper 11 an der Innenseite 2 der Packstoffwand 1 durch Ultraschallschweißen dicht befestigen. Ergänzend wird erwähnt, dass anstelle einer Ultraschallschweißverbindung bzw. einer Erhebung 13 auch der Einsatz üblicher Klebstoffe oder einer Kontaktsiegelung denkbar ist, um den Grundkörper 11 mit seinem Randbereich 12 dicht mit der Innenseite 2 der Packstoffwand 1 zu befestigen.The pressure relief valve 10 has a round body 11 made of plastic by injection molding. The main body 11 has a peripheral edge region 12, on whose inner side 2 of the packaging material wall 1 facing end face, for example, a circumferential, triangular in cross-section elevation 13 is formed. By means of the elevation 13, the base body 11 on the inside 2 tightly fasten the packaging material wall 1 by ultrasonic welding. In addition, it is mentioned that instead of an ultrasonic welding connection or an elevation 13, the use of conventional adhesives or a contact seal is conceivable in order to fasten the base body 11 with its edge region 12 tightly with the inside 2 of the packaging material wall 1.

In dem von dem Randbereich 12 eingeschlossenen Gebiet der Packstoffwand 1 sind vorzugsweise mehrere Löcher, Einschnitte bzw. Perforationen 5 in der Packstoffwand 1 ausgebildet, welche den Durchtritt von durch das Lebensmittel produziertem Gas an das Packungsäußere, das heißt an die Umgebungsluft, ermöglichen.In the area enclosed by the edge region 12 of the packaging material wall 1, a plurality of holes, cuts or perforations 5 are preferably formed in the packaging material wall 1, which allow the passage of gas produced by the food to the outside of the packaging, that is to the ambient air.

Der Grundkörper 11 hat einen gegenüber dem Randbereich 12 abgesenkten Grundbereich 15. Der Grundbereich 15 ist auf der der Packstoffwand 2 zugewandten Seite nicht plan bzw. eben, sondern gewölbt ausgebildet. Dabei findet vorzugsweise eine konkave Wölbung Verwendung, derart, dass der zentrale Bereich 16 des Grundbereiches 15 zur Packstoffwand 2 einen größeren Abstand aufweist als der äußere Bereich 17 des Grundbereiches 15. Zusätzlich ist in dem zentralen Bereich 16, wie am besten aus einer Zusammenschau der Figuren 1 und 2 erkennbar ist, eine Vertiefung 20 auf der der Packstoffwand 2 zugewandten Seite ausgebildet. Die Vertiefung 20 weist in Draufsicht (Figur 2) in etwa die Form einer "8" auf. Beidseitig des Einschnürungsbereiches 21 der Vertiefung 20 ist in der Vertiefung 20 jeweils ein Durchgangsloch 23, 24 ausgebildet, welches Verbindung vom Packungsinneren hat. Auf der der Vertiefung 20 zugewandten Seite ist jedes der beiden Durchgangslöcher 23, 24 von einer turmartigen Erhöhung 25, 26 umgeben, welche in Draufsicht kreisförmig ausgebildet ist. Wie am besten aus der Figur 4 ersichtlich ist, weist jede der beiden Erhöhungen 25, 26 einen Einlaufradius 27 auf, wobei die obere Stirnfläche 28, 29 der Erhöhung 25, 26 auf einem Niveau verläuft, welches knapp unterhalb der Höhe des Grundbereiches 15 unmittelbar neben der Vertiefung 20 vorhanden ist.The base body 11 has a base region 15 which is lowered in relation to the edge region 12. The base region 15 is not flat or flat on the side facing the packaging material wall 2, but arched. In this case, preferably a concave curvature is used, such that the central region 16 of the base region 15 to the packaging material wall 2 has a greater distance than the outer region 17 of the base region 15. In addition, in the central region 16, as best from a synopsis of Figures 1 and 2 can be seen, a recess 20 formed on the packaging material 2 side facing. The recess 20 has in plan view ( FIG. 2 ) approximately in the form of an "8". On both sides of the constriction region 21 of the recess 20, a through hole 23, 24 is formed in the recess 20, which has connection from the inside of the package. On the side facing the recess 20, each of the two through holes 23, 24 is surrounded by a tower-like elevation 25, 26, which is circular in plan view. How best of the FIG. 4 can be seen, each of the two elevations 25, 26 has an inlet radius 27, wherein the upper end face 28, 29 of the elevation 25, 26 runs at a level which is just below the height of the base region 15 immediately adjacent to the depression 20.

Ergänzend wird an dieser Stelle erwähnt, dass die Erhöhungen 25, 26 auch bis in Höhe des Grundbereiches 15 im zentralen Bereich 16, oder sogar darüber hinaus reichen können.In addition, it is mentioned at this point that the elevations 25, 26 can also extend up to the level of the base area 15 in the central area 16, or even beyond.

Am äußeren, umlaufenden Rand des Grundbereiches 15 ist eine weitere Vertiefung 30 ausgebildet, die bis an den Randbereich 12 heranreicht. Weiterhin ist auf der der Packstoffwand 2 abgewandten Seite des Grundkörpers 11 eine vorzugsweise rund ausgebildete Einsenkung 32 ausgebildet, die die beiden Durchgangslöcher 23, 24 überdeckt, und in der ein Filterelement 34 in Form einen Vlieses oder ähnliches befestigt ist. Das Vlies 34 dient dazu zu verhindern, dass Lebensmittelpartikel in die Durchgangslöcher 23, 24 eintreten und diese verstopfen, wenn die Partikelgröße kleiner ist als der Durchmesser der Durchgangslöcher 23, 24.At the outer, circumferential edge of the base region 15, a further recess 30 is formed, which extends to the edge region 12. Furthermore, on the side facing away from the packing material wall 2 of the base body 11, a preferably round recess 32 is formed, which covers the two through holes 23, 24, and in which a filter element 34 is attached in the form of a nonwoven or the like. The nonwoven fabric 34 serves to prevent food particles from entering and clogging the through holes 23, 24 when the particle size is smaller than the diameter of the through holes 23, 24.

Im Bereich des Grundbereiches 15 ist ein Dichtmittel in Form einer dünnen Silikonölschicht 36 aufgebracht. Die Silikonölschicht 36 dient als Dicht- und Verbindungsmittel zwischen dem Grundkörper 11 und einer ebenfalls bevorzugt rund ausgebildeten Ventilmembran 40. Der Durchmesser der Ventilmembran 40 ist dabei etwas geringer als der Innendurchmesser, welcher von dem Randbereich 12 des Grundkörpers 11 begrenzt wird.In the region of the base region 15, a sealing agent in the form of a thin silicone oil layer 36 is applied. The silicone oil layer 36 serves as a sealing and connecting means between the main body 11 and a likewise preferably round trained valve membrane 40. The diameter of the valve membrane 40 is slightly smaller than the inner diameter, which is bounded by the edge region 12 of the base body 11.

Die Ventilmembran 40 besteht ebenfalls aus Kunststoff und ist aufgrund der gewählten Dicke bis zu einem gewissen Maß biegsam ausgebildet. Um ein Herausfallen der Ventilmembran 40 aus dem Grundkörper 11 zu verhindern, ist an der Innenseite des Randbereichs 12 eine im Ausführungsbeispiel umlaufende Einschnürung 41 an dem Grundkörper 11 angeformt. Anstelle einer umlaufenden Einschnürung 41 sind jedoch auch nur bereichsweise angeordnete Rückhaltefinger oder ähnliches denkbar.The valve membrane 40 is also made of plastic and is flexible to a certain extent due to the selected thickness. In order to prevent the valve membrane 40 from falling out of the main body 11, a constriction 41 running around in the exemplary embodiment is integrally formed on the main body 11 on the inside of the edge region 12. However, instead of a circumferential constriction 41 are also Only partially arranged retaining fingers or the like conceivable.

Das soweit beschriebene Überdruckventil 10 funktioniert wie folgt: Das während des Lagungsprozesses durch das Lebensmittel infolge chemischer Umwandlungsprozesse produzierte Gas erhöht den Packungsinnendruck, bis dieser schließlich größer ist als der die Verpackung umgebende Atmosphärendruck. Sobald dieser Überdruck beispielsweise eine Größe von 5 mbar erreicht hat bewirkt dies ein Abheben der Ventilmembran 40 zunächst im Bereich der beiden Spitzen 43, 44 des Einschnürungsbereiches 21 der Vertiefung 20. Von dort aus wird wenigstens ein kanalartiger Durchlaß in Richtung zum Randbereich 12 des Grundkörpers 11 hin gebildet, bis das Gas über den äußeren Rand der Ventilmembran 40 austreten kann. Von dort gelangt das Gas über die Perforationen 5 an das Packungsäußere bzw. die Umgebungsluft. Sobald der Überdruck abgebaut ist, legt sich die Ventilmembran 40, beginnend von deren Randbereich, wieder an den Grundkörper 11 an, wobei die Silikonölschicht 36 infolge von Adhäsionskräften schließlich eine Abdichtung bewirkt, die auch das Eintreten von Umgebungsluft in das Packungsinnere verhindert.The relief valve 10 so far described functions as follows: The gas produced by the food during the laking process due to chemical conversion processes increases the package internal pressure until it eventually exceeds the atmospheric pressure surrounding the package. As soon as this overpressure has reached, for example, a size of 5 mbar, this causes the valve membrane 40 to lift off initially in the region of the two tips 43, 44 of the constriction region 21 of the recess 20. From there, at least one channel-like passage in the direction of the edge region 12 of the main body 11 formed until the gas can escape via the outer edge of the valve diaphragm 40. From there, the gas passes through the perforations 5 to the outer packaging or the ambient air. As soon as the overpressure has been reduced, the valve membrane 40, starting from its edge region, rests against the main body 11 again, wherein the silicone oil layer 36 finally causes a seal due to adhesion forces, which also prevents the entry of ambient air into the interior of the package.

Das Abheben bzw. Anheben der Ventilmembran 40 wird im Rahmen der Erfindung dadurch erleichtert, dass in dem zentralen Bereich 16, in dem sich auch die Vertiefung 20 befindet, der Abstand des Grundbereichs 15 zur Ventilmembran 40 infolge der konkaven Ausbildung des Grundbereiches 15 relativ groß ist, so dass die Adhäsionskräfte (infolge der Steifigkeit der Ventilmembran 40) zwischen der Ventilmembran 40 und dem Grundkörper 11, im Verhältnis zu dem äußeren Bereich 17, herabgesetzt sind. Dadurch wird das Abheben der Ventilmembran 40 im Bereich der Spitzen 43, 44 unterstützt. Das soweit beschriebene Überdruckventil 10 lässt Gas daher bereits bei einem relativ (gegenüber der Umgebung) geringen Überdruck aus dem Packungsinneren entweichen. Weiterhin dichtet das Überdruckventil 10 nach außen hin auch besonders gut ab, da der über die Perforationen 5 auf die Ventilmembran 40 wirkende Atmosphärendruck die Ventilmembran 40 zusätzlich auf die beiden Erhöhungen 25, 26 drückt und somit die Durchgangslöcher 23, 24 verschließt. Weiterhin bewirkt die umlaufende Vertiefung 30, dass sich in diesem Bereich Silikonöl sammeln kann bzw. dieser Bereich als Reservoir für Silikonöl dient, welches somit wieder der Ventilmembran 40 zugeführt werden kann, so dass eine relativ gleichmäßige Benetzung der Ventilmembran 40 auf der dem Grundbereich 15 zugewandten Seite mit dem Silikonöl erfolgt.The lifting or lifting of the valve membrane 40 is facilitated by the fact that in the central region 16, in which the recess 20 is located, the distance of the base region 15 to the valve membrane 40 due to the concave design of the base region 15 is relatively large such that the adhesion forces (due to the stiffness of the valve membrane 40) between the valve membrane 40 and the base body 11, relative to the outer region 17, are reduced. As a result, the lifting of the valve diaphragm 40 in the region of the tips 43, 44 is supported. The pressure relief valve 10 described so far allows gas already at a relatively low (compared to the environment) Overpressure escapes from inside the package. Furthermore, the overpressure valve 10 also seals off particularly well from the outside, since the atmospheric pressure acting on the valve membrane 40 via the perforations 5 additionally presses the valve membrane 40 onto the two elevations 25, 26 and thus closes the through-holes 23, 24. Furthermore, the circumferential depression 30 causes silicone oil to collect in this region or serves as a reservoir for silicone oil, which can thus be supplied to the valve membrane 40 again, so that a relatively uniform wetting of the valve membrane 40 on the base region 15 faces Side with the silicone oil.

Bei dem in den Figuren 5 und 6 dargestellten zweiten Überdruckventil 50 geht beidseitig von der Vertiefung 51 jeweils eine sich nach außen hin verjüngende Einsenkung 52, 53 aus. Außerhalb der beiden Einsenkungen 52, 53 ist der Grundbereich 55 des Grundkörpers 56 plan bzw. eben ausgebildet. Dadurch, dass die beiden Einsenkungen 52, 53 von den beiden Spitzen 57, 58 der ebenfalls "8"-förmig ausgebildeten Vertiefung 51 ausgehen, wird auch bei dem zweiten Überdruckventil 50 ein besonders leichtes Abheben der Ventilmembran 59 ermöglicht.In the in the FIGS. 5 and 6 shown second pressure relief valve 50 is on both sides of the recess 51 each have a tapered outwardly recess 52, 53 from. Outside the two depressions 52, 53, the base region 55 of the main body 56 is planar or flat. The fact that the two depressions 52, 53 emanate from the two tips 57, 58 of the also "8" -shaped recess 51, a particularly easy lifting of the valve diaphragm 59 is also made possible in the second pressure relief valve 50.

Bei dem in den Figuren 7 und 8 dargestellten dritten Überdruckventil 60 ist die Vertiefung 61 entsprechend dem ersten Überdruckventil 10 kreisförmig ausgebildet, reicht jedoch nur bis an den Rand der Vertiefung 62 heran.In the in the FIGS. 7 and 8 illustrated third pressure relief valve 60, the recess 61 corresponding to the first pressure relief valve 10 is circular, but extends only to the edge of the recess 62 zoom.

Bei den in den Figuren 9 und 10 dargestellten Überdruckventilen 65 und 66 ist im Bereich des Grundbereiches 67, 68 keine Vertiefung oder ähnliches angeordnet, vielmehr ist durch Anspritzen beispielsweise zweier länglicher Stege 69 (Figur 9) oder einer Erhebung 70 (Figur 10) ein größerer Abstand zwischen dem Grundkörper 67, 68 und er den Grundkörper 67, 68 überdeckenden Ventilmembran bewirkt. Somit sind in diesen beiden Bereichen der Stege 69 bzw. der Erhebung 70 ebenfalls die Adhäsionskräfte zwischen dem Grundkörper 67, 68 und der Ventilmembran reduziert, um ein leichteres Abheben der Ventilmembran, und somit ein besseres Ansprechen des Überdruckventils 65, 66 bei einem Überdruck im Packungsinneren zu bewirken.In the in the FIGS. 9 and 10 represented overpressure valves 65 and 66 is in the region of the base region 67, 68 no recess or the like arranged, but is by injection molding, for example, two elongate webs 69 (FIG. FIG. 9 ) or a survey 70 ( FIG. 10 ) a greater distance between the base body 67, 68 and he the main body 67, 68 covering the valve membrane causes. Thus, in these two areas of the webs 69 and the survey 70 also reduces the adhesion forces between the body 67, 68 and the valve membrane to facilitate lifting the valve diaphragm, and thus a better response of the pressure relief valve 65, 66 at a positive pressure inside the package to effect.

Die soweit beschriebenen Überdruckventile 10, 50, 60, 65 und 66 können in vielfältiger Weise abgewandelt bzw. modifiziert werden, ohne vom Erfindungsgedanken abzuweichen. Dieser besteht insbesondere darin, durch eine besondere Ausbildung des jeweiligen Grundbereiches bzw. des Überdeckungsbereiches mit der Ventilmembran durch Vergrößerung des Abstandes zwischen der Ventilmembran und dem Grundkörper ein leichteres Abheben der Ventilmembran zu ermöglichen.The relief valves 10, 50, 60, 65 and 66 described so far can be modified or modified in many ways, without departing from the spirit of the invention. This consists, in particular, of facilitating the lifting of the valve membrane by increasing the distance between the valve membrane and the main body by means of a special design of the respective base region or of the overlap region with the valve membrane.

Claims (10)

  1. Pressure relief valve (10; 50; 60; 65; 66) for a packaging container, with a basic body (11) raised with respect to a bottom region (15; 55; 67; 68) and having a peripherally continuous marginal region (12), the marginal region (12) being connected, leak-tight, to the inside (1) of the wall (2) of the packaging container, the packaging container having, in the zone surrounded by the marginal region (12), at least one passage (5) for gas, the basic body (11) having, on its bottom region (15; 55; 67; 68) surrounded by the marginal region (12), a depression (20) on the side facing the wall (2), at least one passage hole (23, 24) emanating from the bottom of the depression (20), and the bottom region (15; 55; 67; 68) being covered virtually completely by a valve diaphragm (40), with a sealing fluid layer (36) being interposed, characterized in that the basic body (11) is designed to be at least partially non-planar in that region of the bottom region (15; 55; 67; 68) which surrounds the depression (20), so that zones of different distance between the bottom region (15; 55; 67; 68) and the valve diaphragm (40) are formed in the surrounding region.
  2. Pressure relief valve according to Claim 1,
    characterized in that the bottom region (15; 55) is of at least partially arched design.
  3. Pressure relief valve according to Claim 2,
    characterized in that the arching is of concave design.
  4. Pressure relief valve according to Claim 1,
    characterized in that elevations (69; 70) which keep the valve diaphragm (40) at a distance from the bottom region (67; 68) are formed on the bottom region (67; 68) .
  5. Pressure relief valve according to one of Claims 1 to 4, characterized in that the at least one passage hole (23, 24) at the bottom of the depression (20) is surrounded by a tower-like elevation (25, 26).
  6. Pressure relief valve according to Claim 5,
    characterized in that the elevation (25, 26) projects to a height below the level of the bottom region (15) in the region directly surrounding the depression (20).
  7. Pressure relief valve according to one of Claims 1 to 6, characterized in that the depression (20) is in the form of an "8", and in that the contraction region (21) of the depression (20) is free of passage holes.
  8. Pressure relief valve according to one of Claims 1 to 7, characterized in that the bottom region (15) is surrounded by a peripherally continuous depression (30).
  9. Pressure relief valve according to Claim 8,
    characterized in that the depression (30) projects as far as the marginal region (12).
  10. Pressure relief valve according to one of Claims 1 to 9, characterized in that the basic body (11) and the valve diaphragm (40) have a round cross-sectional shape.
EP05786948A 2004-09-29 2005-09-08 Pressure relief valve for a packaging container Active EP1802537B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004047810 2004-09-29
DE200410062026 DE102004062026A1 (en) 2004-09-29 2004-12-23 Pressure relief valve for a packaging container
PCT/EP2005/054464 WO2006034950A1 (en) 2004-09-29 2005-09-08 Pressure relief valve for a packaging container

Publications (2)

Publication Number Publication Date
EP1802537A1 EP1802537A1 (en) 2007-07-04
EP1802537B1 true EP1802537B1 (en) 2008-05-14

Family

ID=35311610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05786948A Active EP1802537B1 (en) 2004-09-29 2005-09-08 Pressure relief valve for a packaging container

Country Status (6)

Country Link
US (1) US7721752B2 (en)
EP (1) EP1802537B1 (en)
JP (1) JP4361953B2 (en)
DE (2) DE102004062026A1 (en)
TW (1) TW200621585A (en)
WO (1) WO2006034950A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009000806A1 (en) 2009-02-12 2010-08-19 Robert Bosch Gmbh Pressure relief valve with small dimensions
WO2010091910A1 (en) 2009-02-12 2010-08-19 Robert Bosch Gmbh Pressure relief valve for a packaging container
DE102009000802A1 (en) 2009-02-12 2010-08-19 Robert Bosch Gmbh Pressure relief valve for a packaging container

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8925579B2 (en) * 2006-03-02 2015-01-06 Pacific Bag, Inc. Pressure relief valve
US8382033B2 (en) * 2007-05-21 2013-02-26 Gary Thomas Reece Ballistic resistant and explosive containment systems for aircraft
US20090169693A1 (en) * 2007-12-27 2009-07-02 Hoffman Karl K Interior-mountable pressure relief valve
KR100996491B1 (en) 2009-02-03 2010-11-24 주식회사 블리스팩 the gas outlet valve for sealing package bag
KR101044250B1 (en) 2009-10-23 2011-06-28 주식회사 블리스팩 the gas outlet valve for sealing package bag
US20110284536A1 (en) * 2010-05-22 2011-11-24 William Walters One Way Degassing Valve
WO2012141356A1 (en) * 2011-04-15 2012-10-18 주식회사 블리스팩 Gas outlet for sealed packing bag
DE102014209076A1 (en) * 2014-05-14 2015-11-19 Airbus Operations Gmbh Fire protection trolley and fire protection device with such a fire protection trolley
TWI640707B (en) * 2017-07-21 2018-11-11 陳家珍 Air exhaust valve
DE102019200867A1 (en) * 2019-01-24 2020-07-30 Syntegon Technology Gmbh Vacuum-proof pressure relief valve for packaging containers
DE102019200860A1 (en) * 2019-01-24 2020-07-30 Syntegon Technology Gmbh Pressure relief valve with a floating membrane
DE102019214315A1 (en) * 2019-09-19 2021-03-25 Syntegon Technology Gmbh Valve for a packaging container
DE102022115835A1 (en) 2022-06-24 2024-01-04 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Water drain valve for a vehicle body

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638263A (en) * 1949-05-20 1953-05-12 Duo Vent Vacuum Closure Compan Flexible bag for vacuum sealing
IT989172B (en) * 1973-06-14 1975-05-20 Goglio Luigi PROCEDURE FOR THE PACKAGING OF PRODUCTS IN CONTAINER AND CONTAINER FOR THE IMPLEMENTATION OF THE PROCEDURE
DE2537317A1 (en) * 1975-08-21 1977-02-24 Hesser Ag Maschf PRESSURE COMPENSATING VALVE FOR A PACKAGING CONTAINER
US4134535A (en) * 1976-06-04 1979-01-16 Hag Aktiengesellschaft Pressure relief valve for packing containers
DE3125496C2 (en) * 1981-06-29 1983-12-29 Wipf AG Verpackungen, 8404 Volketswil Pressure relief valve for venting packaging
DE3526602A1 (en) * 1985-07-25 1987-01-29 Bosch Gmbh Robert METHOD FOR PRODUCING A PACKAGING CONTAINER WITH A RBERPRESSURE VALVE
DE4129838A1 (en) 1991-02-16 1992-08-20 Bosch Gmbh Robert PRESSURE VALVE FOR PACKAGING CONTAINERS
IT1248238B (en) * 1991-06-18 1995-01-05 Ica Spa BREATHER VALVE.
SE9400366D0 (en) * 1994-02-04 1994-02-04 Siemens Elema Ab Valve for controlling a gas or liquid flow
DE19510489A1 (en) * 1995-03-27 1996-10-02 Bosch Gmbh Robert Pressure relief valve for a packaging container
US5584409A (en) * 1995-09-18 1996-12-17 Chemberlen; Christopher H. One direction ventilation valves
US5992442A (en) 1997-05-29 1999-11-30 Urquhart; Edward F. Relief valve for use with hermetically sealed flexible container
DE20221455U1 (en) 2002-12-02 2005-12-08 Robert Bosch Gmbh Excess pressure valve for packing container comprises only two parts with stud-like rigid support body and a valve membrane closing the gas port in support body
US7240796B2 (en) * 2003-10-16 2007-07-10 Ppi Technologies, Inc. Packaging release valve for refrigerated food items
AR046175A1 (en) * 2004-10-07 2005-11-30 Celomat S A A UNIDIRECTIONAL PRESSURE RELEASE VALVE APPLICABLE TO A CONTAINER CONTAINING A PRODUCT THAT ISSUING GASES, IN WHICH A FLUID HALF AND AN AIR BUBBLE COEXIST, AND A CONTAINER THAT INCLUDES THIS VALVE
US7294354B2 (en) * 2004-10-29 2007-11-13 Sonoco Development, Inc. Container with gas release feature

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009000806A1 (en) 2009-02-12 2010-08-19 Robert Bosch Gmbh Pressure relief valve with small dimensions
WO2010091910A1 (en) 2009-02-12 2010-08-19 Robert Bosch Gmbh Pressure relief valve for a packaging container
WO2010091909A1 (en) 2009-02-12 2010-08-19 Robert Bosch Gmbh Compact pressure relief valve
DE102009000802A1 (en) 2009-02-12 2010-08-19 Robert Bosch Gmbh Pressure relief valve for a packaging container
DE102009000805A1 (en) 2009-02-12 2010-08-19 Robert Bosch Gmbh Pressure relief valve for a packaging container
WO2010091908A1 (en) 2009-02-12 2010-08-19 Robert Bosch Gmbh Pressure relief valve for a packaging container
CN102317175B (en) * 2009-02-12 2014-06-25 罗伯特·博世有限公司 Compact pressure relief valve

Also Published As

Publication number Publication date
WO2006034950A1 (en) 2006-04-06
JP2008514518A (en) 2008-05-08
TWI356796B (en) 2012-01-21
TW200621585A (en) 2006-07-01
DE102004062026A1 (en) 2006-03-30
US7721752B2 (en) 2010-05-25
US20080011751A1 (en) 2008-01-17
DE502005004146D1 (en) 2008-06-26
JP4361953B2 (en) 2009-11-11
EP1802537A1 (en) 2007-07-04

Similar Documents

Publication Publication Date Title
EP1802537B1 (en) Pressure relief valve for a packaging container
EP1558500B1 (en) Package with an overpressure valve
EP2396244B1 (en) Pressure relief valve for a packaging container
DE3508777C2 (en)
DE10205344B4 (en) Hermetically sealed container with pierceable access inlet
EP1421012B1 (en) Pressure relief valve for a packaging container and device for applying the pressure relief valve to a web of material
DE7924419U1 (en) Aerosol can
EP2396242B1 (en) Compact pressure relief valve
EP2396243B1 (en) Pressure relief valve for packaging containers
EP0382146B2 (en) Container closure with a safety valve
EP2833043B1 (en) Valve device
EP0568005A1 (en) Fuel tank vent valve
EP1569858B1 (en) Safety valve for a packaging container
AT524574B1 (en) Actuator for raising a hood
EP3686125B1 (en) Pressure relief valve with floating membrane and packaging container
DE19820540A1 (en) Ventilation valve for liquid container, e.g. chain saw fuel tank
EP3689786A1 (en) Waste receiving apparatus
DE102016001304B4 (en) Filter element, in particular for liquid filtration and filter device
EP3686124B1 (en) Vacuum resistant pressure valve for packaging containers
DE10023455C2 (en) Pressure valve for a compressor
DE102004061262A1 (en) Pressure control valve for packing container e.g. packing bag, has base plate on which spacer layer is provided, and valve membrane on whose outer contour projection is provided to connect membrane and layer
DE4439372C2 (en) Piston pump for high pressure cleaning devices
DE2609901A1 (en) CAP FOR AEROSOLS
DE1764160C2 (en) Pressure relief valve for electrical capacitors
DE19934426A1 (en) Ink printer with a cleaning station for a nozzle head comprises a layer of absorbent medium which is supported by means of holding elements separated from one another by thin suction channels

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070502

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 502005004146

Country of ref document: DE

Date of ref document: 20080626

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20090217

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502005004146

Country of ref document: DE

Representative=s name: DAUB, THOMAS, DIPL.-ING., DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502005004146

Country of ref document: DE

Owner name: SYNTEGON TECHNOLOGY GMBH, DE

Free format text: FORMER OWNER: ROBERT BOSCH GMBH, 70469 STUTTGART, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20200923

Year of fee payment: 16

Ref country code: FR

Payment date: 20200921

Year of fee payment: 16

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20201217 AND 20201223

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20210908

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210908

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210930

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20230919

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230929

Year of fee payment: 19