EP0673854A1 - Laminate for the manufacture of packaging containers with pressure relief valves - Google Patents
Laminate for the manufacture of packaging containers with pressure relief valves Download PDFInfo
- Publication number
- EP0673854A1 EP0673854A1 EP95102807A EP95102807A EP0673854A1 EP 0673854 A1 EP0673854 A1 EP 0673854A1 EP 95102807 A EP95102807 A EP 95102807A EP 95102807 A EP95102807 A EP 95102807A EP 0673854 A1 EP0673854 A1 EP 0673854A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- laminate
- openings
- channel
- strip
- layers
- 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
Links
- 238000004806 packaging method and process Methods 0.000 title claims description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000005022 packaging material Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 39
- 239000007789 gas Substances 0.000 description 20
- 239000012943 hotmelt Substances 0.000 description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000003570 air Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000005021 flexible packaging material Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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
Definitions
- the invention is based on a laminate for the production of packaging containers according to the preamble of claim 1.
- a laminate of this type known from EP 0 144 011 B1 the inner layer and the outer layer are not connected to one another in a longitudinal strip, so that a Channel is formed.
- perforations are formed in the inner laminate layer in contact with the product. Gas released from the packaged product, in the case of coffee, for example, carbon dioxide, flows through the perforations into the channel if there is overpressure in the packaging container and from there through openings at the ends of the channel in the edges of the head or bottom area.
- a disadvantage of this laminate is that due to the relatively long length of the channel and due to kinks at the head and bottom and near the closure seams of the packaging container designed as a 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 overpressure that exceeds, for example, 10 mbar, the bag package is inflated in such a way that it takes on an unsightly appearance and some consumers suspect that the goods are spoiled. To avoid this disadvantage, it is known from DE-GM 87 04 279 to provide perforations in the outer laminate layer offset from the perforations in the inner laminate layer, through which the gas can escape. This results in shorter distances for the gas and thus a lower opening pressure. However, it can also happen with such bag packs that the channels are compressed by tension when the pack walls are deformed. As a result, safe and reliable gas escape is no longer guaranteed.
- the laminate according to the invention for the production of packaging containers with the characterizing features of claim 1 has the advantage that the resulting gas strip can escape safely through the valve region reinforcing the valve gas even with an unfavorable deformation of the packaging walls of the packaging container. Further advantages and advantageous developments of the laminate according to the invention for the production of packaging containers result from the subclaims and the description. An even more reliable function of the valve strip can be achieved by spacers arranged in its edge areas. In another embodiment of the laminate according to the invention, in which the spacers are dispensed with, passages for the gas are also provided in the valve strip. This simplifies the construction of the laminate and the pressure relief valve formed by the laminate and the valve strip can also be placed in the head area of a bag pack.
- FIG. 1 shows a bag pack in a perspective view
- FIG. 2 shows a partial section in plane II-II of FIG. 1
- FIG. 3 shows a section of FIG. 1 in front view
- FIG. 4 shows a partial section in plane IV-IV 3
- FIG. 5 shows a partial section in the plane II-II of FIG. 1 in a modified embodiment of the pressure relief valve
- FIG. 6 shows a modified bag pack in a perspective view
- FIG. 7 shows an opened pressure relief valve according to FIG. 4.
- the head 13 and the bottom 14 are sealed gas-tight by means of a transverse seam 16, 17 and a side wall with a longitudinal seam, not shown, so that the packaged product, for example coffee, is isolated from the ambient air.
- the packaging material film (FIG. 2) used to form the bag package 10 consists of a film laminate 20 or a multilayer packaging material which has at least two layers 21, 22.
- the packaging material can also have more than two layers.
- the layers 21, 22 preferably consist of an elastic, thermoplastic, heat seal or weldable plastic.
- one of the layers 21, 22 or an additional layer can consist of a thin metal foil.
- the individual layers 21, 22 are connected to one another with a layer 23 of a suitable adhesive.
- the bag pack 10 In order to prevent the gas-tightly sealed bag pack 10 from inflating or even bursting when the enclosed filling material produces gas, in the case of coffee, for example, carbon dioxide, the bag pack 10 has a degassing or pressure relief valve 25, through which gas from the gas is released when the pressure is too high Bag pack inside can flow outside, but this prevents air from entering the bag pack inside.
- the pressure relief valve 25 is set up in the packaging material of the bag pack 10 (FIG. 3).
- the two layers 21, 22 are not connected to one another in a longitudinal strip, so that a bubble in the form of a channel 27 is formed in the area of this strip.
- a valve strip 30, the width of which is smaller than that of the channel 27, is arranged centrally in the channel 27.
- the valve strip 30 reinforcing the area of the channel 27 is made, for example, of polyester and has a thickness of 20 ⁇ m to 100 ⁇ m.
- openings 31 in the form of a group of punctures are formed in the inner layer 21, the openings 31 being arranged at a regular distance from one another.
- the valve strip 30 is connected and fixed at its edge regions by means of so-called hot-melt points 33, which consist of meltable adhesive, to at least one of the two layers 21, 22, so that between the individual hot melt points 33, the inner layer 21 and the valve strip 30 result in passage areas 34 for the gas in the area of the channel 27 not covered by the valve strip 30.
- openings 36 in the form of a slot are formed at regular intervals in the outer layer 22 in the region of the channel 27. In the exemplary embodiment, these are arranged on both sides of the valve strip 30, but they can also be arranged in congruence with this.
- the hot melt points 33 which have a certain thickness, for example 0.2 mm, are advantageously arranged at the level of the openings 36 in the outer layer 22.
- a layer of liquid sealant 35 for example silicone oil, is preferably applied to the side of the valve strip 30 facing the inner layer 21, which fills unevenness in the layer surfaces and pulls the valve strip 30 against the inner layer 21 by adhesion.
- the valve strip 30 is connected over its entire surface on its long sides, for example by means of two adhesive layers 37 to the inner layer 21.
- the valve strip 30 has openings 38 in the form of slots which are arranged in the center and at regular intervals between the adhesive layers 37 in the valve strip 30. In this case, the arrangement of the other openings 31, 36 in the two layers 21, 22 is such that all openings 31, 36, 38 are arranged either laterally or in the longitudinal direction in relation to one another.
- hotmelting points 33 are used as spacers between the valve strip 30 and the outer layer 22.
- the hot melt points 33 are preferred arranged at the same height with the openings 31, 38 of the inner layer 21 or the valve strip 30.
- the shape of the openings 31, 36, 38 can also be different, that is to say that not only punctures or slits, but also punchings, holes or other types of cuts, depending on the application, can be advantageous.
- the favorable distances and arrangements of the different openings 31, 36, 38 in the two layers 21, 22 and the valve strip 30 will generally have to be determined by means of test series.
- Such laminates for packaging containers as described above, such as bag packs 10, can be produced by introducing the corresponding openings 31, 36 into the two layers 21, 22 separately before the lamination, and thus bringing the layers 21, 22 together with the valve strip 30 interposed that the desired offset of the openings 31, 36, 38 to each other.
- the liquid sealant 35 is also applied to the valve strip 30 during lamination.
- hot-melt points 33 it is also necessary to attach the hot-melt points 33 at the appropriate points when the valve strip 30 is inserted.
- the channel 27, and thus the pressure relief valve 25, preferably extends in the longitudinal direction of the laminated layers 21, 22 of a side wall 11, 12, so that it can be easily produced on known machines.
- the channel 27 can, however, also run transversely to the longitudinal direction and in particular transversely in the region of the head 13 of the bag pack 10 (FIG. 6), which is particularly advantageous if, as will be explained below, the hot melt points 33 is waived.
- the channel 27 does not have to extend over the entire length or width of a bag pack 10, but can also extend only within part of a wall of the bag pack 10.
- the pressure relief valve 25 of the bag pack 10 described above acts as follows: At the same pressure inside the bag package 10 and in the atmosphere surrounding it, and at a slight excess pressure inside the bag package 10, in the region of the channel 27 in particular the valve strip 30 and the inner layer 21 abut one another, the openings 31 of the inner layer 21 are sealed by the valve strip 30.
- the liquid sealant 35 contained in the channel 27 increases the tightness, so that even a permeation of small amounts of gas is prevented.
- gas pressure inside the bag package 10 increases due to gas separated from the filling material and reaches a certain height, gas penetrates through the openings 31 of the inner layer 21 into the channel 27 and pushes the adjacent valve strip 30 upward (FIG. 7).
- the gas then passes through the passage areas 34 into the area of the openings 36 of the outer layer 22, a connection being created between the inner openings 31 and the closest outer openings 36.
- This connection allows gas to flow out of the interior of the bag pack 10 into the open. Because the hot melt points 33 create a certain distance between the two layers 21, 22, the effect of the valve strip 30 which reinforces the valve area is further increased, so that even when the bag package 10 is deformed due to stresses in its side walls 11, 12 can always form the passages 34.
- the gas flows into the open air at an overpressure in the bag package 10 through the slots 38 in the valve strip 30 through the openings 36 in the outer layer 22, whereby this is lifted off the valve strip 30 by the excess pressure.
- valve strip 30 rests against the inner layer 21, so that the passage in the channel 27 closes again. This prevents the penetration of atmospheric oxygen from the atmosphere into the interior of the bag package 10.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Bag Frames (AREA)
Abstract
Description
Die Erfindung geht aus von einem Laminat für die Herstellung von Verpackungsbehältern nach dem Oberbegriff des Anspruchs 1. Bei einem aus der EP 0 144 011 B1 bekannten Laminat dieser Art sind die innere Schicht und die äußere Schicht in einem Längsstreifen nicht miteinander verbunden, so daß ein Kanal gebildet wird. Ferner sind in der mit dem Produkt in Berührung stehenden inneren Laminatschicht Perforationen ausgebildet. Vom verpackten Produkt freigesetztes Gas, im Falle von Kaffee beispielsweise Kohlendioxid, strömt bei Überdruck im Verpackungsbehälter durch die Perforationen in den Kanal und von dort durch Öffnungen an den Enden des Kanals in den Rändern des Kopf- beziehungsweise Bodenbereichs ins Freie. Nachteilig bei diesem Laminat ist, daß aufgrund der verhältnismäßig großen Länge des Kanals und aufgrund von Knickfalten am Kopf und Boden und nahe den Verschlußnähten des als Beutelpackung ausgebildeten Verpackungsbehälters durch Spannungen im Packstoff Drosselstellen gebildet werden, durch die der Öffnungsdruck des Überdruckventils sehr hoch eingestellt wird. Durch einen Überdruck, 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.
Um diesen Nachteil zu vermeiden, ist es aus dem DE-GM 87 04 279 bekannt, versetzt zu den Perforationen in der inneren Laminatschicht auch Perforationen in der äußeren Laminatschicht vorzusehen, durch die das Gas entweichen kann. Dadurch werden kürzere Wege für das Gas, und damit ein geringerer Öffnungsdruck erzielt. Jedoch kann es auch bei derartigen Beutelpackungen dazu kommen, daß bei einer Verformung der Packungswände die Kanäle durch Spannungen zusammengedrückt werden. Dadurch ist ein sicheres und zuverlässiges Entweichen des Gases nicht mehr gewährleistet.The invention is based on a laminate for the production of packaging containers according to the preamble of claim 1. In a laminate of this type known from EP 0 144 011 B1, the inner layer and the outer layer are not connected to one another in a longitudinal strip, so that a Channel is formed. In addition, perforations are formed in the inner laminate layer in contact with the product. Gas released from the packaged product, in the case of coffee, for example, carbon dioxide, flows through the perforations into the channel if there is overpressure in the packaging container and from there through openings at the ends of the channel in the edges of the head or bottom area. A disadvantage of this laminate is that due to the relatively long length of the channel and due to kinks at the head and bottom and near the closure seams of the packaging container designed as a 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 overpressure that exceeds, for example, 10 mbar, the bag package is inflated in such a way that it takes on an unsightly appearance and some consumers suspect that the goods are spoiled.
To avoid this disadvantage, it is known from DE-GM 87 04 279 to provide perforations in the outer laminate layer offset from the perforations in the inner laminate layer, through which the gas can escape. This results in shorter distances for the gas and thus a lower opening pressure. However, it can also happen with such bag packs that the channels are compressed by tension when the pack walls are deformed. As a result, safe and reliable gas escape is no longer guaranteed.
Das erfindungsgemäße Laminat für die Herstellung von Verpackungsbehältern mit den kennzeichnenden Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil, daß durch den den Ventilbereich verstärkenden Ventilstreifen das entstehende Gas selbst bei einer ungünstigen Verformung der Packungswände des Verpackungsbehälters sicher entweichen kann.
Weitere Vorteile und vorteilhafte Weiterbildungen des erfindungsgemäßen Laminats für die Herstellung von Verpackungsbehältern ergeben sich aus den Unteransprüchen und der Beschreibung. Eine noch sicherere Funktion des Ventilstreifens kann durch in dessen Randbereichen angeordnete Abstandshalter erzielt werden. In einer anderen Ausführungsform des erfindungsgemäßen Laminats, bei der auf die Abstandshalter verzichtet wird, sind auch in dem Ventilstreifen Durchlässe für das Gas vorgesehen. Dadurch wird der Aufbau des Laminats vereinfacht, und das vom Laminat und dem Ventilstreifen gebildete Überdruckventil kann auch im Kopfbereich einer Beutelpackung angeordnet werden.The laminate according to the invention for the production of packaging containers with the characterizing features of claim 1 has the advantage that the resulting gas strip can escape safely through the valve region reinforcing the valve gas even with an unfavorable deformation of the packaging walls of the packaging container.
Further advantages and advantageous developments of the laminate according to the invention for the production of packaging containers result from the subclaims and the description. An even more reliable function of the valve strip can be achieved by spacers arranged in its edge areas. In another embodiment of the laminate according to the invention, in which the spacers are dispensed with, passages for the gas are also provided in the valve strip. This simplifies the construction of the laminate and the pressure relief valve formed by the laminate and the valve strip can also be placed in the head area of a bag pack.
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden in der nachfolgenden Beschreibung näher erläutert. Es zeigen Fig.1 eine Beutelpackung in perspektivischer Ansicht, Fig.2 einen Teilschnitt in der Ebene II-II der Fig.1, Fig.3 einen Ausschnitt der Fig.1 in Vorderansicht, Fig.4 einen Teilschnitt in der Ebene IV-IV der Fig.3, Fig.5 einen Teilschnitt in der Ebene II-II der Fig.1 bei einer abgewandelten Ausführungsform des Überdruckventils, Fig.6 eine abgewandelte Beutelpackung in perspektivischer Ansicht und Fig.7 ein geöffnetes Überdruckventil nach Fig.4.Exemplary embodiments of the invention are shown in the drawing and are explained in more detail in the following description. 1 shows a bag pack in a perspective view, FIG. 2 shows a partial section in plane II-II of FIG. 1, FIG. 3 shows a section of FIG. 1 in front view, FIG. 4 shows a partial section in plane IV-IV 3, FIG. 5 shows a partial section in the plane II-II of FIG. 1 in a modified embodiment of the pressure relief valve, FIG. 6 shows a modified bag pack in a perspective view and FIG. 7 shows an opened pressure relief valve according to FIG. 4.
Eine in der Fig.1 dargestellte Beutelpackung 10, bei der der umhüllende Beutel zwei breite und zwei schmale Seitenwände 11, 12 sowie einen Kopf 13 und einen Boden 14 aufweist, ist aus einer flexiblen Packstoffolie geformt. Der Kopf 13 und der Boden 14 sind mittels je einer Quernaht 16, 17 und eine Seitenwand mit einer nicht dargestellten Längsnaht gasdicht versiegelt, so daß das verpackte Füllgut, beispielsweise Kaffee, von der Umgebungsluft isoliert ist.A
Die zur Formung der Beutelpackung 10 verwendete Packstoffolie (Fig.2) besteht aus einem Folienlaminat 20 beziehungsweise einem Mehrschichtpackstoff, der mindestens zwei Schichten 21, 22 aufweist. Um die Dichtigkeit der Beutelpackung 10 für hochwertige, sauerstoffempfindliche Füllgüter zu erhöhen, kann der Packstoff auch mehr als zwei Schichten haben. Die Schichten 21, 22 bestehen vorzugsweise aus einem elastischen, thermoplastischen, heißsiegelbeziehungsweise schweißbaren Kunststoff. Zum Erhöhen der Gasdichtigkeit kann eine der Schichten 21, 22 oder eine zusätzliche Schicht aus einer dünnen Metallfolie bestehen. Die einzelnen Schichten 21, 22 sind mit einer Schicht 23 aus einem geeigneten Klebstoff miteinander verbunden.The packaging material film (FIG. 2) used to form the
Um zu vermeiden, daß die gasdicht verschlossene Beutelpackung 10 sich stark aufbläht oder gar platzt, wenn das eingeschlossene Füllgut Gas, im Falle von Kaffee beispielsweise Kohlendioxid, erzeugt, hat die Beutelpackung 10 ein Entgasungs- oder Überdruckventil 25, durch das bei Überdruck Gas aus dem Beutelpackungsinnern ins Freie abströmen können, das aber den Zutritt von Luft in das Beutelpackungsinnere verhindert.In order to prevent the gas-tightly sealed
Das Überdruckventil 25 ist im Packstoff der Beutelpackung 10 eingerichtet (Fig.3). Dazu sind im Bereich einer der Seitenwände 11, 12 der Beutelpackung 10 in dem Mehrschichtpackstoff, bei dem die einzelnen Schichten 21, 22 im wesentlichen vollflächig mit der Kleberschicht 23 miteinander verbunden sind, in einem Längsstreifen die beiden Schichten 21, 22 nicht miteinander verbunden, so daß im Bereich dieses Streifens eine Blase in Form eines Kanals 27 gebildet wird. In dem Kanal 27 ist ein Ventilstreifen 30, dessen Breite geringer ist als die des Kanals 27, mittig angeordnet. Der den Bereich des Kanals 27 verstärkende Ventilstreifen 30 besteht beispielsweise aus Polyester und hat eine Dicke von 20µm bis 100µm.
In Deckung mit dem Ventilstreifen 30 sind in der inneren Schicht 21 Durchbrüche 31 in Form von jeweils einer Gruppe von Durchstichen ausgebildet, wobei die Durchbrüche 31 in regelmäßigem Abstand voneinander angeordnet sind. Der Ventilstreifen 30 ist an seinen Randbereichen mittels sogenannten Hotmeltpunkten 33, die aus schmelzfähigem Klebstoff bestehen, mit wenigstens einer der beiden Schichten 21, 22 verbunden und fixiert, so daß sich zwischen den einzelnen Hotmeltpunkten 33, der inneren Schicht 21 und dem Ventilstreifen 30 Durchgangsbereiche 34 für das Gas in dem vom Ventilstreifen 30 nicht überdeckten Bereich des Kanals 27 ergeben. Weiterhin sind in der äußeren Schicht 22 im Bereich des Kanals 27 in regelmäßigem Abstand Durchbrüche 36 in Form jeweils eines Schlitzes ausgebildet. Im Ausführungsbeispiel sind diese beiderseits des Ventilstreifens 30 angeordnet, sie können jedoch auch in Deckung mit diesem angeordnet sein.
Vorteilhafterweise sind die Hotmeltpunkte 33, die eine bestimmte Dicke, beispielweise 0,2 mm aufweisen, in Höhe der Durchbrüche 36 der äußeren Schicht 22 angeordnet. Vorzugsweise ist weiterhin auf der der inneren Schicht 21 zugewandten Seite des Ventilstreifens 30 eine Schicht flüssigen Dichtmittels 35, beispielsweise Silikonöl aufgebracht, das Unebenheiten der Schichtoberflächen ausfüllt und durch Adhäsion den Ventilstreifen 30 gegen die innere Schicht 21 zieht.
In einem anderen Ausführungsbeispiel des Folienlaminats 20 (Fig.5) ist der Ventilstreifen 30 an seinen Längsseiten vollflächig, beispielsweise mittels zweier Klebstoffschichten 37 mit der inneren Schicht 21 verbunden. Außerdem hat der Ventilstreifen 30 Durchbrüche 38 in Form von Schlitzen, die mittig und in gleichmäßigen Abständen zwischen den Klebstoffschichten 37 im Ventilstreifen 30 angeordnet sind. In diesem Fall ist die Anordnung der anderen Durchbrüche 31, 36 in den beiden Schichten 21, 22 derart, daß alle Durchbrüche 31, 36, 38 entweder seitlich oder in Längsrichtung zueinander versetzt angeordnet sind.The
In coincidence with the
The
In another embodiment of the film laminate 20 (FIG. 5), the
Weiterhin ist auch ein Ausführungsbeispiel des Überdruckventils 25 denkbar, bei dem zu den eben beschriebenen, und in der Fig.5 dargestellten Merkmalen zusätzlich Hotmeltingpunkte 33 als Abstandshalter zwischen dem Ventilstreifen 30 und der äußeren Schicht 22 verwendet werden. In diesem Fall sind die Hotmeltpunkte 33 bevorzugt in der gleichen Höhe mit den Durchbrüchen 31, 38 der inneren Schicht 21 beziehungsweise des Ventilstreifens 30 angeordnet.Furthermore, an embodiment of the
Ergänzend wird darauf hingewiesen, daß die Form der Durchbrüche 31, 36, 38 auch andersartig sein kann, das heißt, daß nicht nur Durchstiche oder Schlitze, sondern je nach Anwendungsfall auch Ausstanzungen, Löcher oder andersartige Schnitte vorteilhaft sein können. Weiterhin werden die günstigen Abstände und Anordnungen der verschiedenen Durchbrüche 31, 36, 38 in den beiden Schichten 21, 22 und dem Ventilstreifen 30 in der Regel durch Versuchsreihen zu ermitteln sein.In addition, it is pointed out that the shape of the
Derartige, oben beschriebene Laminate für Verpackungsbehälter, wie Beutelpackungen 10, lassen sich herstellen, indem vor dem Laminieren die entsprechenden Durchbrüche 31, 36 getrennt in die beiden Schichten 21, 22 eingebracht werden und die Schichten 21, 22 unter Zwischenlage des Ventilstreifens 30 so zusammengeführt werden, daß sich der gewünschte Versatz der Durchbrüche 31, 36, 38 zueinander einstellt. Ebenfalls beim Laminieren wird das flüssige Dichtmittel 35 auf dem Ventilstreifen 30 aufgebracht. Bei der Verwendung von Hotmeltpunkten 33 ist es zudem erforderlich, beim Einführen des Ventilstreifens 30 die Hotmeltpunkte 33 an den entsprechenden Stellen anzubringen.Such laminates for packaging containers as described above, such as
Vorzugsweise erstreckt sich der Kanal 27, und somit das Überdruckventil 25 in Längsrichtung der laminierten Schichten 21, 22 einer Seitenwand 11, 12, so daß er einfach auf bekannten Maschinen herstellbar ist. Der Kanal 27 kann jedoch auch quer zur Längsrichtung und insbesondere quer im Bereich des Kopfes 13 der Beutelpackung 10 verlaufen (Fig.6), was insbesondere dann von Vorteil ist, wenn, wie anschließend noch erläutert wird, auf die Hotmeltpunkte 33 verzichtet wird.
Ergänzend wird bemerkt, daß der Kanal 27 sich nicht über die gesamte Länge oder Breite einer Beutelpackung 10 erstrecken muß, sondern sich auch nur innerhalb eines Teils einer Wand der Beutelpackung 10 erstrecken kann.The
In addition, it is noted that the
Das Überdruckventil 25 der oben beschriebenen Beutelpackung 10 wirkt wie folgt:
Bei gleichem Druck im Innern der Beutelpackung 10 und in der diese umgebenden Atmosphäre sowie bei einem geringen Überdruck im Innern der Beutelpackung 10 liegen im Bereich des Kanals 27 insbesondere der Ventilstreifen 30 und die innere Schicht 21 aneinander an, wobei die Durchbrüche 31 der inneren Schicht 21 vom Ventilstreifen 30 abgedichtet sind. Das im Kanal 27 enthaltene flüssige Dichtmittel 35 erhöht die Dichtigkeit, so daß selbst eine Permeation von kleinen Gasmengen verhindert wird. Wenn der Gasdruck im Innern der Beutelpackung 10 durch vom Füllgut abgesondertes Gas ansteigt und eine bestimmte Höhe erreicht, dringt Gas durch die Durchbrüche 31 der inneren Schicht 21 in den Kanal 27 und drückt den anliegenden Ventilstreifen 30 nach oben (Fig.7). Im Ausführungsbeispiel, bei dem Hotmeltpunkten 33 im Folienlaminat 20 verwendet werden, gelangt das Gas daraufhin durch die Durchgangsbereiche 34 in den Bereich der Durchbrüche 36 der äußeren Schicht 22, wobei eine Verbindung zwischen den inneren Durchbrüchen 31 und den nächstliegenden äußeren Durchbrüchen 36 geschaffen wird. Durch diese Verbindung kann nun Gas aus dem Innern der Beutelpackung 10 ins Freie ausströmen.
Dadurch, daß durch die Hotmeltpunkte 33 ein bestimmter Abstand zwischen den beiden Schichten 21, 22 geschaffen wird, wird der den Ventilbereich verstärkende Effekt des Ventilstreifens 30 noch vergrößert, so daß sich auch bei einer Verformung der Beutelpackung 10 aufgrund von Spannungen in deren Seitenwänden 11, 12 stets die Durchlässe 34 bilden können.The
At the same pressure inside the
Because the
Bei dem Ausführungsbeispiel nach Fig.6, bei dem auf die Hotmeltpunkte 33 im Folienlaminat 20 verzichtet wird, strömt das Gas bei einem Überdruck in der Beutelpackung 10 durch die Schlitze 38 in dem Ventilstreifen 30 durch die Durchbrüche 36 der äußeren Schicht 22 ins Freie, wobei diese durch den Überdruck von dem Ventilstreifen 30 abgehoben ist. In diesem Fall ist es auch möglich, das Überdruckventil 25, beziehungsweise den Kanal 27, quer verlaufend im Kopf 13 der Beutelpackung 10 anzuordnen.In the embodiment according to FIG. 6, in which the hot melt points 33 in the
Nach Abgabe einer bestimmten Gasmenge und sinkendem Innendruck im Innern der Beutelpackung 10 legt sich der Ventilstreifen 30 wieder an die innere Schicht 21 an, so daß sich der Durchlaß im Kanal 27 wieder schließt. Damit ist das Eindringen von Luftsauerstoff aus der Atmosphäre in das Innere der Beutelpackung 10 unterbunden.After a certain amount of gas has been released and the internal pressure in the
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4408244A DE4408244A1 (en) | 1994-03-11 | 1994-03-11 | Laminate for the production of packaging containers |
DE4408244 | 1994-03-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0673854A1 true EP0673854A1 (en) | 1995-09-27 |
EP0673854B1 EP0673854B1 (en) | 1997-05-07 |
Family
ID=6512514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95102807A Expired - Lifetime EP0673854B1 (en) | 1994-03-11 | 1995-02-28 | Laminate for the manufacture of packaging containers with pressure relief valves |
Country Status (4)
Country | Link |
---|---|
US (1) | US5553942A (en) |
EP (1) | EP0673854B1 (en) |
DE (2) | DE4408244A1 (en) |
DK (1) | DK0673854T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1882637A1 (en) * | 2006-07-28 | 2008-01-30 | Q-bag packaging machinery GmbH & Co. KG | Packing container |
Families Citing this family (62)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030068362A1 (en) * | 1993-02-22 | 2003-04-10 | American Bioscience, Inc. | Methods and formulations for the delivery of pharmacologically active agents |
KR100193465B1 (en) * | 1993-12-28 | 1999-06-15 | 가타야마 도루 | Packing Equipment |
US5871790A (en) * | 1997-03-04 | 1999-02-16 | Union Camp Corporation | Laminated bag wall construction |
US5893461A (en) * | 1997-04-07 | 1999-04-13 | Fres-Co System Usa, Inc. | Pressure vacuum release hermetic valve for flexible packages |
US6170985B1 (en) | 1997-10-15 | 2001-01-09 | Lyle F. Shabram, Jr. | Bag with venting means |
US5863499A (en) * | 1997-11-03 | 1999-01-26 | Steris Corporation | Light weight vented package for liquids |
ATE238206T1 (en) | 1998-06-24 | 2003-05-15 | Alcan Tech & Man Ag | CLOSURE MEMBRANE WITH RELIEF VALVE |
US6261615B1 (en) * | 1999-07-01 | 2001-07-17 | General Mills, Inc. | Canister with venting holes for containing a particulate-type product |
FR2796924B1 (en) * | 1999-07-29 | 2001-10-19 | Proplast | VALVE AND VALVE PACKAGING, PARTICULARLY FOR COOKING FOOD |
US6743492B2 (en) | 2001-08-01 | 2004-06-01 | Sonoco Development, Inc. | Laminate for coffee packaging with energy cured coating |
BR0314448A (en) * | 2002-09-17 | 2007-11-06 | Alexander S Pouchkarev | multilayer pressure vessel and method of manufacture of this |
JP4059753B2 (en) * | 2002-11-14 | 2008-03-12 | 大和グラビヤ株式会社 | Storage bag |
US20040173626A1 (en) * | 2003-03-07 | 2004-09-09 | Jeor Bret De St | Pressure vacuum release hermetic valve for rigid container packages |
US6986605B1 (en) * | 2003-04-23 | 2006-01-17 | Exopack-Technology, Llc | Multiwall vented bag, vented bag forming apparatus, and associated methods |
SE527398C2 (en) * | 2003-05-30 | 2006-02-28 | Micvac Ab | One-way valve for food packaging |
DE102004026538A1 (en) * | 2004-05-27 | 2005-12-22 | Haver & Boecker Ohg | Bag of plastic film that can be filled with a bulk material |
EP1607339B1 (en) * | 2004-05-27 | 2008-03-26 | RKW AG Rheinische Kunststoffwerke | Vented plastic bag |
US7726880B2 (en) * | 2004-06-29 | 2010-06-01 | The Glad Products Company | Flexible storage bag |
US20060289519A1 (en) * | 2005-05-20 | 2006-12-28 | Exopack-Technology, Llc | Microwave cooking package for food products and associated methods |
US20060289518A1 (en) * | 2005-05-20 | 2006-12-28 | Exopack-Technology, Llc | Microwave cooking package for food products and associated methods |
US8282539B2 (en) | 2008-12-22 | 2012-10-09 | Exopack, Llc | Multi-layered bags and methods of manufacturing the same |
US20070047852A1 (en) * | 2005-08-29 | 2007-03-01 | Exopack-Technology, Llc | Grease-resistant pinch-bottom bag, adhesive closure for bag, and related methods |
WO2007027425A1 (en) * | 2005-08-29 | 2007-03-08 | Exopack-Technology, Llc | Method of forming and using a vented bag |
US20070110343A1 (en) * | 2005-11-12 | 2007-05-17 | Reynolds Consumer Products, Inc. | Ventable package with zipper closure, and methods |
US20070263948A1 (en) * | 2006-01-05 | 2007-11-15 | Buchman James E | Ventable Package with Zipper Closure, and Methods |
DE102006004291A1 (en) * | 2006-01-31 | 2007-08-09 | Windmöller & Hölscher Kg | Sack and method for producing the same |
DE102006017229B4 (en) * | 2006-04-12 | 2008-06-05 | Nordfolien Gmbh | Packaging for bulk goods, in particular bags of plastic film |
ITMI20070175U1 (en) * | 2006-05-13 | 2007-11-14 | Haver & Boecker Ohg | PACKAGE |
US7886412B2 (en) | 2007-03-16 | 2011-02-15 | S.C. Johnson Home Storage, Inc. | Pouch and airtight resealable closure mechanism therefor |
US7784160B2 (en) | 2007-03-16 | 2010-08-31 | S.C. Johnson & Son, Inc. | Pouch and airtight resealable closure mechanism therefor |
US8269155B2 (en) * | 2007-05-08 | 2012-09-18 | Medport Llc | Food service heat retention device |
US8197139B2 (en) | 2007-06-15 | 2012-06-12 | S.C. Johnson Home Storage, Inc. | Valve and valve strip for a reclosable container |
US7967509B2 (en) | 2007-06-15 | 2011-06-28 | S.C. Johnson & Son, Inc. | Pouch with a valve |
US7946766B2 (en) | 2007-06-15 | 2011-05-24 | S.C. Johnson & Son, Inc. | Offset closure mechanism for a reclosable pouch |
US7887238B2 (en) | 2007-06-15 | 2011-02-15 | S.C. Johnson Home Storage, Inc. | Flow channels for a pouch |
US7857515B2 (en) | 2007-06-15 | 2010-12-28 | S.C. Johnson Home Storage, Inc. | Airtight closure mechanism for a reclosable pouch |
US7874731B2 (en) * | 2007-06-15 | 2011-01-25 | S.C. Johnson Home Storage, Inc. | Valve for a recloseable container |
US20090026199A1 (en) * | 2007-07-27 | 2009-01-29 | Jeor Bret De | Pressure vacuum release hermetic valve for rigid container packages |
DE102008046173B4 (en) * | 2008-09-06 | 2010-06-17 | Nordfolien Gmbh | Packaging container made of plastic film |
US9056697B2 (en) | 2008-12-15 | 2015-06-16 | Exopack, Llc | Multi-layered bags and methods of manufacturing the same |
US8604399B2 (en) | 2009-10-19 | 2013-12-10 | Exopack, Llc | Microwavable bags for use with liquid oil and related methods |
CA2697780A1 (en) * | 2009-12-31 | 2011-06-30 | Emballage Rouville Inc. | Deflatable bag with laterally perforated liner and non-adjacent humidity barrier |
US20110299798A1 (en) * | 2010-06-07 | 2011-12-08 | Stephen Graham Coulson | Bag with Structure for Avoiding Bricking Appearance |
US20120281933A1 (en) * | 2011-05-06 | 2012-11-08 | Fres-Co System Usa, Inc. | Thin flexible one-way valve, packaging including the same, and method of making the same |
US20120298663A1 (en) * | 2011-05-26 | 2012-11-29 | Printpack Illinois, Inc. | Flexible sturdy base container and method for making the same |
DE202011106386U1 (en) * | 2011-10-06 | 2011-11-18 | Nordfolien Gmbh | Ventable packaging container |
US9555947B2 (en) | 2012-05-31 | 2017-01-31 | Berry Plastics Corporation | Vented steam cooking package |
WO2015069857A1 (en) * | 2013-11-06 | 2015-05-14 | The Procter & Gamble Company | Flexible containers with vent systems |
WO2015069820A1 (en) * | 2013-11-06 | 2015-05-14 | The Procter & Gamble Company | Easy to empty flexible containers |
EP3066029B1 (en) | 2013-11-06 | 2018-04-25 | The Procter and Gamble Company | Flexible containers having flexible valves |
GB201400974D0 (en) * | 2014-01-21 | 2014-03-05 | Discovery Flexibles Ltd | Apparatus for gas over-pressure release |
GB2526547B (en) * | 2014-05-27 | 2017-03-01 | Parkside Flexibles (Europe) Ltd | Sheet for forming a package |
DE202014007340U1 (en) * | 2014-09-15 | 2015-12-18 | Bischof + Klein Gmbh & Co. Kg | Flexible packaging container |
CN107406184B (en) | 2015-04-10 | 2019-07-12 | 宝洁公司 | Flexible container with integral dispensing jet pipe |
US10017300B2 (en) | 2015-04-10 | 2018-07-10 | The Procter & Gamble Company | Flexible containers with product dispensing visibility |
US10138024B2 (en) | 2015-05-20 | 2018-11-27 | Sonoco Development, Inc. | Flexible laminate structure with integrated one-way valve |
US10281050B2 (en) | 2016-04-26 | 2019-05-07 | Sonoco Development, Inc. | One-way valve score design |
DE102016220428A1 (en) * | 2016-09-27 | 2018-03-29 | Windmöller & Hölscher Kg | Valve bag and method and system for producing a valve sack |
US11548255B2 (en) * | 2017-02-21 | 2023-01-10 | The Procter & Gamble Company | Methods of making vented flexible containers |
CN110225865B (en) * | 2017-02-22 | 2021-12-31 | 宝洁公司 | Method of making a flexible container having a structural support frame |
US11338975B2 (en) | 2018-05-16 | 2022-05-24 | The Procter & Gamble Company | Container blanks for flexible packages and methods of making flexible packages |
US11352183B2 (en) * | 2020-03-05 | 2022-06-07 | Plitek, L.L.C. | Pressure relief valve with wetting fluid reservoirs |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4134535A (en) * | 1976-06-04 | 1979-01-16 | Hag Aktiengesellschaft | Pressure relief valve for packing containers |
GB2099958A (en) * | 1981-05-22 | 1982-12-15 | Cuxson Gerrard & Co Ltd | Pressure relief valves |
DE3521373A1 (en) * | 1985-06-14 | 1986-12-18 | Heinrich Hermann Gmbh + Co, 7000 Stuttgart | Overpressure valve for a packaging container, in particular made of flexible material, and production method therefor |
DE8704279U1 (en) * | 1987-03-21 | 1988-07-21 | Robert Bosch Gmbh, 7000 Stuttgart | Packaging container with degassing valve |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE148436C (en) * | 1900-01-01 | |||
US2593328A (en) * | 1948-07-13 | 1952-04-15 | John W Meaker | Perforated multiple ply bag |
US3092249A (en) * | 1961-03-30 | 1963-06-04 | Chapman Harold Eric | Containers or packages |
US3503497A (en) * | 1968-07-25 | 1970-03-31 | Pall Corp | Breather container |
US4470153A (en) * | 1982-03-08 | 1984-09-04 | St. Regis Paper Company | Multiwall pouch bag with vent strip |
US4550441A (en) * | 1984-07-18 | 1985-10-29 | St. Regis Paper Company | Vented bag |
IT1253170B (en) * | 1991-07-24 | 1995-07-10 | Bl Macchine Automatiche | LOT OF THERMOPLASTIC MATERIAL, SUITABLE FOR ALLOWING THE SPILL OF THE AIR INCORPORATED BY THE BAGGED PRODUCT. |
US5399022A (en) * | 1993-02-25 | 1995-03-21 | Ab Specialty Packaging, Inc. | Venting structure for a multiple ply bag |
-
1994
- 1994-03-11 DE DE4408244A patent/DE4408244A1/en not_active Withdrawn
-
1995
- 1995-02-28 DE DE59500216T patent/DE59500216D1/en not_active Expired - Fee Related
- 1995-02-28 DK DK95102807.5T patent/DK0673854T3/en active
- 1995-02-28 EP EP95102807A patent/EP0673854B1/en not_active Expired - Lifetime
- 1995-03-13 US US08/403,524 patent/US5553942A/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4134535A (en) * | 1976-06-04 | 1979-01-16 | Hag Aktiengesellschaft | Pressure relief valve for packing containers |
GB2099958A (en) * | 1981-05-22 | 1982-12-15 | Cuxson Gerrard & Co Ltd | Pressure relief valves |
DE3521373A1 (en) * | 1985-06-14 | 1986-12-18 | Heinrich Hermann Gmbh + Co, 7000 Stuttgart | Overpressure valve for a packaging container, in particular made of flexible material, and production method therefor |
DE8704279U1 (en) * | 1987-03-21 | 1988-07-21 | Robert Bosch Gmbh, 7000 Stuttgart | Packaging container with degassing valve |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1882637A1 (en) * | 2006-07-28 | 2008-01-30 | Q-bag packaging machinery GmbH & Co. KG | Packing container |
Also Published As
Publication number | Publication date |
---|---|
DE59500216D1 (en) | 1997-06-12 |
EP0673854B1 (en) | 1997-05-07 |
DK0673854T3 (en) | 1997-12-08 |
DE4408244A1 (en) | 1995-09-14 |
US5553942A (en) | 1996-09-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0673854B1 (en) | Laminate for the manufacture of packaging containers with pressure relief valves | |
EP0499783B1 (en) | Overpressure valve for packages | |
EP0482036B1 (en) | Inflatable foil sachet, especially for packaging purposes | |
EP0760790B1 (en) | Relief valve for a packaging container | |
DE3413352C2 (en) | ||
DE69423199T2 (en) | Wrapping device | |
DE1903048A1 (en) | Flexible, hermetically sealed packaging container and method of packaging the goods in the same | |
EP0209729A2 (en) | Packaging container with a vent valve | |
EP0023703B1 (en) | Pressure relief valve for packing containers | |
EP1558500A1 (en) | Overpressure valve for the content of a package | |
WO1988007479A1 (en) | Packaging receptacle with gas outlet vent | |
DE69302930T2 (en) | Foil for the creation of a pack as well as the production method and use of this foil | |
DE2829073B1 (en) | Beverage container with a predetermined opening for a drinking straw | |
DE4007128A1 (en) | Inflatable foil bag for packaging - has two foils each with integral valve sections avoiding leaking seals | |
DE3304590A1 (en) | CONTAINER FOR THE PRESSURE-TIGHT PACKING OF ITEMS, IN PARTICULAR TENNIS BARS | |
DE19918150C1 (en) | Lid for closing a roof opening in a vehicle roof | |
DE2526975B2 (en) | PLASTIC FLOOR BAG | |
EP1479615B1 (en) | Foil package | |
DE60009009T2 (en) | Film for reclosable packaging and packaging produced with it | |
DE3705167A1 (en) | Inflatable plastic bag for packaging purposes | |
DE60201732T2 (en) | INFLATABLE CARRIER BAG | |
EP1707348A1 (en) | Material web for packages | |
DE2848834C2 (en) | Pressure relief valve for a packaging container | |
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 | |
DE3828847A1 (en) | Vacuum pack for granular food |
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 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE DK FR IT SE |
|
17P | Request for examination filed |
Effective date: 19960327 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
17Q | First examination report despatched |
Effective date: 19960807 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE DK FR IT SE |
|
ET | Fr: translation filed | ||
REF | Corresponds to: |
Ref document number: 59500216 Country of ref document: DE Date of ref document: 19970612 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
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 | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20030221 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DK Payment date: 20030224 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20030225 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20030325 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040301 Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040301 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040901 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20041029 |
|
EUG | Se: european patent has lapsed | ||
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050228 |