EP0377569A1 - Packing container with a tear-open arrangement. - Google Patents

Packing container with a tear-open arrangement.

Info

Publication number
EP0377569A1
EP0377569A1 EP88905689A EP88905689A EP0377569A1 EP 0377569 A1 EP0377569 A1 EP 0377569A1 EP 88905689 A EP88905689 A EP 88905689A EP 88905689 A EP88905689 A EP 88905689A EP 0377569 A1 EP0377569 A1 EP 0377569A1
Authority
EP
European Patent Office
Prior art keywords
strip
adhesive
packaging container
tear
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88905689A
Other languages
German (de)
French (fr)
Other versions
EP0377569B1 (en
Inventor
Norbert Buchner
Klaus Domke
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 EP0377569A1 publication Critical patent/EP0377569A1/en
Application granted granted Critical
Publication of EP0377569B1 publication Critical patent/EP0377569B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4011—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening completely by means of a tearing tab
    • 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/001—Action for opening container
    • B65D2517/0013—Action for opening container pull-out tear panel, e.g. by means of a tear-tab
    • 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/0058—Other details of container end panel
    • B65D2517/0059—General cross-sectional shape of container end panel
    • B65D2517/0061—U-shaped
    • 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/0058—Other details of container end panel
    • B65D2517/008—Materials of container end panel
    • B65D2517/0085—Foil-like, e.g. paper or cardboard
    • B65D2517/0086—Foil-like, e.g. paper or cardboard laminated

Definitions

  • EP-A-104 548 and EP-A-129 102 describe an opening in a wall of a packaging container that is precisely defined in terms of area known, preferably in the mirror of the lid to incorporate a line of weakness in the form of a notch which surrounds a tear-open part.
  • a grip tab the free end of which can be easily gripped with the fingers for detaching the tear-open part, is connected to the start section of the tear-open part which tapers as a tongue.
  • a packaging container with a pressure relief valve has become known from EP-A-209 729, through which gas generated by the filling material during storage, for example carbon dioxide, can escape during storage, so that the packaging container is not inflated.
  • the object of the invention is to create an easy-to-open packaging container with a pressure relief valve, which is constructed in a material-saving manner.
  • the packaging container according to the invention with the characterizing features of claim 1 has the advantage that the grip tab and the pressure relief valve are integrated in one part.
  • this design has the further advantage that the weakening line for the tear-open part and the opening for the pressure relief valve are manufactured in a single operation and the combined grip tab pressure relief valve part is also attached to the packaging container in a single operation can be, so that the work involved in manufacturing the container is very low.
  • FIG. 1 shows the head of a packaging container with a tear-open device in a diagrammatic view
  • FIG. 2 shows part of the packaging container according to FIG. 1 in cross section in the plane II-II of FIG. 1
  • FIGS. 3 and 4 show two other exemplary embodiments of a tear-open device of a packaging container in FIG Top view
  • FIG. 5 the tear-open device according to FIG. 4 in cross-section in the plane VV of FIG. 4
  • FIG. 6 a further embodiment of a tear-open device in cross-section. Description of the exemplary embodiments
  • a packaging container has a tubular or sleeve-shaped body 1 and its upper opening is closed with a lid 2, which is sealed to the upper end of the body 1 by a U-shaped edge fold 3.
  • the packaging container is watertight and gas-tight and is particularly suitable for holding air and moisture-sensitive food and beverages.
  • the fuselage 1 is formed from a multi-layer packaging material which has a weldable, thermoplastic layer on the inside.
  • the fuselage 1 has a square cross section with rounded corners; however, its cross-sectional shape can also be circular, oval, rectangular or polygonal, the corners preferably being rounded.
  • the cover 2, which closes the upper opening of the fuselage 1, has a flat wall 4 and a U-shaped folding edge 3 which delimits this and which is adapted to the cross-sectional shape of the fuselage 1 and which engages around the end of the fuselage and is sealed with the inside and outside thereof is sealed.
  • the lid 2 is made of a multilayer composite material which has an outer layer 6 made of plastic or cardboard, a middle layer 7 made of thin metal foil and an inner layer 8 made of a weldable or heat-sealable plastic.
  • the packaging container has in a wall, preferably in the lid 2, a tear-open part 10 which is surrounded by a line of weakness 11 formed as a notch in the outer carrier layer.
  • the line of weakness 11 runs parallel to the edge flange 3 in the flat wall 4 of the cover 2, so that the tear-open part 10 results in a full tear-open area adapted to the cover mirror.
  • a second weakening line 12 bends from the weakening line 11 to the center of the 2, which, together with an arc-shaped weakening line 13 running approximately parallel thereto, delimit a tear-open tongue 14 extending to the center of the cover 2 with a starting section 15.
  • the weakening lines 12, 13 designed as notches or grooves are interrupted towards the center of the cover 2 and their extension is continued by two parallel cuts 16 and a U-shaped cut 17, which delimits the starting section 15.
  • the cuts 16 and the U-shaped cut 17 penetrate the lid material completely in such a way that the U-shaped starting section 15 can be bent out of the lid surface and through the cuts 17 a gas exchange between the inside and outside of the container is possible.
  • the area of the starting section 15, the cuts 16 and the ends of the weakening lines 12 and 13 are in platelets or strips 20 on the top the lid 2 attached.
  • the strip 20 which has a rectangular shape, consists of a flexible film, preferably made of plastic, such as polyethylene or polypropylene, and has a thickness of approximately 30 ⁇ m.
  • the width of the strip 20 is slightly larger than the distance between the two cuts 16 and the leg of the U-cut 17. Its length is substantially greater than the distance between the ends of the lines of weakness 12, 13 and the U-cut 17. With the top the cover 2, the strip 20 is connected by means of two adhesive surfaces 21 and 22.
  • the two adhesive surfaces 21 and 22, which extend transversely to the longitudinal extent of the strip 20, are at a distance from one another, so that the intermediate, adhesive-free part 23 of the strip 20 together with the region of the surface of the cover 2 covered by this part delimits a valve channel 24, into which the cuts 16 open.
  • the end surface opposite the end region with the adhesive surface 21 Rich 25 of the strip 20 is also adhesive-free, so that this end portion 25 can be detected as a handle.
  • the adhesive surfaces 21 and 22 extending transversely to the longitudinal extension of the strip 20 consist of a non-curing adhesive, preferably based on polyurethane.
  • the cover 2 with the lines of weakness 12, 13 and cuts 16, 17 and with the strip 20 acts as follows:
  • the flexible strip 20 is fastened lying flat on the top of the flat wall 4 of the cover 2. It covers the cuts 16 and 17 which go through the wall 4, so that a connection between the interior of the container and the atmosphere surrounding it is interrupted.
  • the sealing effect in the area of the valve channel 24 is further increased if a liquid sealant, for example silicone oil, is arranged in this.
  • a liquid sealant for example silicone oil
  • the strip 20 also facilitates the opening of the packaging container.
  • the adhesive-free end region 25 of the strip 20 is gripped with fingers and pulled up.
  • the adhesive surface 22 adjoining the adhesive-free end region 25 stands out from the surface of the lid 2, but the punched-out, U-shaped starting section 15 remains stuck to the strip 20 because of less resistance and is pulled up.
  • the cover material breaks between the legs of the U-shaped cut 17 and the cuts 16 and between these and the ends of the weakening lines 12 and 13, so that the crack continues in the weakening lines 12 and 13 and on the weakening line surrounding the tear-open part 10 overlaps, so that finally the tear-open part 10 can be completely torn out of the cover 2.
  • the adhesive is of a non-hardening type and its adhesive properties are set in such a way that when the strip 20 is pulled at an angle, it detaches from the plastic upper side of the cover 2 that, however, the unclamped, punched-out start section 15 is taken along when pulling off.
  • the strip 20 serving as a pressure relief valve and a grip tab has essentially the same structure as in the exemplary embodiment according to FIG. 1, but the breakthrough for the gas to pass through the cover 2 and the Lines of weakness 12, 13 designed differently.
  • the lines of weakness 12 and 13 delimiting the tear-open tongue 14 end in front of the strip 20. rer extension join the legs of the U-shaped section 17, which delimits the punched-out start section 15.
  • the U-shaped cut 17 with the start section 15 is covered and sealed by the one end of the strip 20 with the adhesive surface 21.
  • the gas passage opening into the valve channel 24 is formed by an arcuate slot 27 which is covered by the adhesive-free part 23 of the strip 20.
  • Figure 4 is similar to that of Figure 3, with the difference that the weakening lines 11, 12, 13 are not designed as continuous notches or grooves, but that they are composed of many notch sections 29, which angled cuts Have 30 as catch notches.
  • the packaging container according to FIGS. 3 and 4 is opened in a manner similar to that described above under FIG. 1.
  • the adhesive surface 22 is first detached and when the adhesive surface 21 is detached, the start section 15 is then pulled along and the tear is transferred to the weakening lines 12, 13.
  • the execution of the weakening lines 11, 12, 13 from a plurality of notch sections is particularly advantageous in the case of lids whose carrier layer consists of cardboard.
  • the strip 20 * in the exemplary embodiment consists 5 from a film completely coated on the underside with adhesive 32.
  • the adhesive-free zones for the handle end region 25 'and the adhesive-free part 23' for the valve channel 24 become alive formed by thin cover strips 33 and 34.
  • cover strips 33, 34 consist of a flexible plastic film, for example polyethylene, polyester and the like, with a thickness of approximately 10 ⁇ m.
  • the strip 20 ′′ forming a pressure relief valve and a grip tab can also be designed such that the valve function is laid in the multi-layer strip 20 ′′ (FIG. 6).
  • the strip 20 ′′ consists of two congruent strips 36, 37 made of a flexible plastic film, of which the upper surface is completely coated on the underside with an adhesive and with the top of the lower strip 37 except in the area of the valve channel 24 ′ to be formed. is connected, in the area of which the adhesive layer is inactivated with a transverse cover strip 38. Centered in relation to the cover strip 38, the lower strip 37 has an opening 39 which, when the strip 20 ′ * is attached to the cover 2, is in alignment with the opening 27 in the wall 4 of the cover 2.
  • the adhesive-free area 25 ** the adhesive-free area 25 '' of the underside of the strip 37, which is also fully coated with adhesive, is provided with a cover strip 33 ''.
  • the strip 20 ′ and 20 ′′ forming a pressure relief valve and a grip tab is arranged on the lid 2 of the container in the same way as in the exemplary embodiments according to FIGS. 1 to 4.
  • a combined pressure relief valve handle part can easily be designed differently based on the exemplary embodiments described above, without deviating from the spirit of the invention.

Abstract

Un récipient d'emballage comprend dans une paroi (2) une partie déchirable (10) qui facilite son ouverture, une languette d'accrochage étant fixée à la section initiale (15) de la partie déchirable. Afin de laisser s'échapper des gaz générés par le produit emballé, la partie (20, 20', 20'') qui forme la languette d'accrochage (25) a en outre la forme d'une soupape de surpression. De préférence, la languette d'accrochage-soupape de surpression se compose d'une bande en matière plastique collée à la section initiale (15) de la partie déchirable (10) et forme un évent (24) à travers un passage (16, 27) ménagé dans la paroi du récipient (4).A packaging container comprises in a wall (2) a tearable part (10) which facilitates its opening, a hooking tab being fixed to the initial section (15) of the tearable part. In order to allow gases generated by the packaged product to escape, the part (20, 20 ', 20' ') which forms the attachment tab (25) is further in the form of a pressure relief valve. Preferably, the hooking-pressure relief tab consists of a plastic strip glued to the initial section (15) of the tearable part (10) and forms a vent (24) through a passage (16, 27) formed in the wall of the container (4).

Description

Verpackungsbehalter mit Aufreißeinrichtunσ Packaging container with tear-open device
Stand der TechnikState of the art
Die Erfindung geht aus von einem Verpackungsbehälter nach der Gat¬ tung des Anspruchs 1. Zum Bilden einer flächenmäßig genau definier¬ ten Öffnung in einer Wand eines Verpackungsbehälters ist es bei¬ spielsweise aus der EP-A-104 548 und EP-A-129 102 bekannt, vorzugs¬ weise im Spiegel des Deckels eine Schwächungslinie in Form einer Kerbe einzuarbeiten, die ein Aufreißteil umgibt. Mit dem schmal als Zunge zulaufenden Startabschnitt des Aufreißteils ist als Aufrei߬ hilfe eine Grifflasche verbunden, deren freies Ende zum Austrennen des Aufreißteils mit den Fingern leicht erfaßt werden kann.The invention is based on a packaging container according to claim 1. For example, EP-A-104 548 and EP-A-129 102 describe an opening in a wall of a packaging container that is precisely defined in terms of area known, preferably in the mirror of the lid to incorporate a line of weakness in the form of a notch which surrounds a tear-open part. A grip tab, the free end of which can be easily gripped with the fingers for detaching the tear-open part, is connected to the start section of the tear-open part which tapers as a tongue.
Ferner ist durch die EP-A-209 729 ein Verpackungsbehälter mit einem Überdruckventil bekanntgeworden, durch das während der Lagerung vom Füllgut erzeugtes Gas, beispielsweise bei Kaffee Kohlendioxid, ent¬ weichen kann, so daß ein Aufblähen des Verpackungsbehälters vermie¬ den wird.Furthermore, a packaging container with a pressure relief valve has become known from EP-A-209 729, through which gas generated by the filling material during storage, for example carbon dioxide, can escape during storage, so that the packaging container is not inflated.
Aufgabe der Erfindung ist es, einen leicht zu öffnenden Verpackungs¬ behälter mit einem Überdruckventil zu schaffen, der in materialspa¬ render Weise aufgebaut ist. Vorteile der ErfindungThe object of the invention is to create an easy-to-open packaging container with a pressure relief valve, which is constructed in a material-saving manner. Advantages of the invention
Der erfindungsgemäße Verpackungsbehälter mit den kennzeichnenden Merkmalen des Anspruchs 1 hat den Vorteil, daß die Grifflasche und das Überdruckventil in einem Teil integriert sind. Heben der Mate¬ rialersparnis hat diese Ausbildung den weiteren Vorteil, daß das Fertigen der Schwächungslinie für das λufreißteil und des Durch¬ bruchs für das Überdruckventil in einem einzigen λrbeitsgang und das Befestigen des kombinierten Grifflasche-Überdruckventilteils am Ver¬ packungsbehälter ebenfalls in einem einzigen Arbeitsgang vorgenommen werden können, so daß auch der Arbeitsaufwand beim Fertigen des Be¬ hälters sehr gering ist.The packaging container according to the invention with the characterizing features of claim 1 has the advantage that the grip tab and the pressure relief valve are integrated in one part. To increase the material savings, this design has the further advantage that the weakening line for the tear-open part and the opening for the pressure relief valve are manufactured in a single operation and the combined grip tab pressure relief valve part is also attached to the packaging container in a single operation can be, so that the work involved in manufacturing the container is very low.
Durch die in den Unteransprüchen aufgezeigten Maßnahmen sind vor¬ teilhafte Weiterbildungen des im Anspruch 1 aufgeführten Verpak- kungsbehälters möglich. Eine besonders einfache Gestaltung des Grifflasche-Überdruckventils ergibt sich aus den Merkmalen des An¬ spruchs 2.The measures set out in the subclaims allow advantageous developments of the packaging container listed in claim 1. A particularly simple design of the grip tab pressure relief valve results from the features of claim 2.
Zeichnungdrawing
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 den Kopf eines Verpackungsbehälters mit einer Auf¬ reißeinrichtung in schaubildlicher Ansicht, Figur 2 einen Teil des Verpackungsbehälters nach Figur 1 im Querschnitt in der Ebene II-II der Figur 1, Figur 3 und 4 zwei andere λusführungsbeispiele einer Aufreißeinrichtung eines Verpackungsbehälters in Draufsicht, Figur 5 die Aufreißeinrichtung nach Figur 4 im Querschnitt in der Ebene V-V der Figur 4 und Figur 6 ein weiteres Ausführungsbeispiel einer Auf¬ reißeinrichtung im Querschnitt. Beschreibung der AusfuhrungsbeispieleExemplary embodiments of the invention are shown in the drawing and are explained in more detail in the following description. 1 shows the head of a packaging container with a tear-open device in a diagrammatic view, FIG. 2 shows part of the packaging container according to FIG. 1 in cross section in the plane II-II of FIG. 1, FIGS. 3 and 4 show two other exemplary embodiments of a tear-open device of a packaging container in FIG Top view, FIG. 5 the tear-open device according to FIG. 4 in cross-section in the plane VV of FIG. 4 and FIG. 6 a further embodiment of a tear-open device in cross-section. Description of the exemplary embodiments
Ein Verpackungsbehälter hat einen röhr- oder hülsenför igen Rumpf 1 und seine obere Öffnung ist mit einem Deckel 2 verschlossen, der mit einem U-förmigen Randfalz 3 mit dem oberen Ende des Rumpfes 1 ver¬ siegelt ist. Der Verpackungsbehälter ist wasserdampf- und gasdicht und insbesondere zur Aufnahme von luft- und feuchtigkeitsempfind¬ lichen Nahrungs- und Genußmitteln geeignet.A packaging container has a tubular or sleeve-shaped body 1 and its upper opening is closed with a lid 2, which is sealed to the upper end of the body 1 by a U-shaped edge fold 3. The packaging container is watertight and gas-tight and is particularly suitable for holding air and moisture-sensitive food and beverages.
Der Rumpf 1 ist aus einem mehrschichtigen Packstoff geformt, der auf der Innenseite eine schweißbare, thermoplastische Schicht hat. Beim dargestellten Ausführungsbeispiel hat der Rumpf 1 einen quadra¬ tischen Querschnitt mit abgerundeten Ecken; seine Querschnittsform kann aber auch kreisförmig, oval, rechteckig oder mehreckig sein, wobei die Ecken vorzugsweise gerundet sind. Der die obere Öffnung des Rumpfes 1 verschließende Deckel 2 hat eine ebene Wand 4 und ei¬ nen diese begrenzenden, der Querschnittsform des Rumpfes 1 angepa߬ ten U-förmigen Falzrand 3, der das Ende des Rumpfes umgreift und mit dessen Innen- und Außenseite dicht versiegelt ist. Der Deckel 2 ist aus einem mehrschichtigen Verbundwerkstoff hergestellt, der eine äu¬ ßere Schicht 6 aus Kunststoff oder Karton, eine mittlere Schicht 7 aus dünner Metallfolie und eine innere Schicht 8 aus einem schwei߬ baren oder heißsiegelbaren Kunststoff hat.The fuselage 1 is formed from a multi-layer packaging material which has a weldable, thermoplastic layer on the inside. In the illustrated embodiment, the fuselage 1 has a square cross section with rounded corners; however, its cross-sectional shape can also be circular, oval, rectangular or polygonal, the corners preferably being rounded. The cover 2, which closes the upper opening of the fuselage 1, has a flat wall 4 and a U-shaped folding edge 3 which delimits this and which is adapted to the cross-sectional shape of the fuselage 1 and which engages around the end of the fuselage and is sealed with the inside and outside thereof is sealed. The lid 2 is made of a multilayer composite material which has an outer layer 6 made of plastic or cardboard, a middle layer 7 made of thin metal foil and an inner layer 8 made of a weldable or heat-sealable plastic.
Der Verpackungsbehälter hat in einer Wand, vorzugsweise im Deckel 2 ein austrennbares Aufreißteil 10, das von einer als Kerbe in der äu¬ ßeren Trägerschicht ausgebildeten Schwächungslinie 11 umgeben ist. Beim Ausführungsbeispiel nach Figur 1 verläuft die Schwächungslinie 11 in der ebenen Wand 4 des Deckels 2 parallel nahe dem Randflansch 3, so daß das Aufreißteil 10 eine dem Deckelspiegel angepaßte Voll¬ aufreißfläche ergibt. Von der Schwächungslinie 11 biegt in einem ge¬ raden Abschnitt eine zweite Schwächungslinie 12 zur Mitte des Dek- kels 2 hin ab, die zusammen mit einer dazu etwa parallel verlaufen¬ den bogenförmigen Schwächungslinie 13 eine sich zur Mitte des Dek- kels 2 hin erstreckende Aufreißzunge 14 mit einem Startabschnitt 15 begrenzen. Zur Mitte des Deckels 2 hin sind die als Kerben oder Ril¬ len ausgebildeten Schwächungslinien 12, 13 unterbrochen und ihre Er¬ streckung wird von zwei parallelen Schnitten 16 und einem U-förmigen Schnitt 17 fortgesetzt, welcher den Startabschnitt 15 begrenzt. Die Schnitte 16 und der U-fδrmige Schnitt 17 durchdringen das Deckelma¬ terial vollständig so, daß der U-förmige Startabschnitt 15 aus der Deckelfläche herausgebogen werden kann und durch die Schnitte 17 ein Gasaustausch zwischen dem Inneren und Äußeren des Behälters möglich ist.The packaging container has in a wall, preferably in the lid 2, a tear-open part 10 which is surrounded by a line of weakness 11 formed as a notch in the outer carrier layer. In the exemplary embodiment according to FIG. 1, the line of weakness 11 runs parallel to the edge flange 3 in the flat wall 4 of the cover 2, so that the tear-open part 10 results in a full tear-open area adapted to the cover mirror. In a straight section, a second weakening line 12 bends from the weakening line 11 to the center of the 2, which, together with an arc-shaped weakening line 13 running approximately parallel thereto, delimit a tear-open tongue 14 extending to the center of the cover 2 with a starting section 15. The weakening lines 12, 13 designed as notches or grooves are interrupted towards the center of the cover 2 and their extension is continued by two parallel cuts 16 and a U-shaped cut 17, which delimits the starting section 15. The cuts 16 and the U-shaped cut 17 penetrate the lid material completely in such a way that the U-shaped starting section 15 can be bent out of the lid surface and through the cuts 17 a gas exchange between the inside and outside of the container is possible.
Zum Verschließen der als Durchbrüche wirkenden Schnitte 16 und 17 sowie zum Erleichtern des Heraushebens des Startabschnitts 15 aus der Deckelfläche ist über den Bereich des Startabschnitts 15, der Schnitte 16 und der Enden der Schwächungslinien 12 und 13 in Plätt¬ chen oder Streifen 20 auf der Oberseite des Deckels 2 befestigt. Der eine rechteckige Form aufweisende Streifen 20 besteht aus einer flexiblen Folie vorzugsweise aus Kunststoff, wie Polyäthylen oder Polypropylen, und hat eine Dicke von ca. 30 um. Die Breite des Streifens 20 ist etwas größer als der Abstand der beiden Schnitte 16 voneinander und der Schenkel des U-Schnittes 17. Seine Länge ist wesentlich größer als der Abstand der Enden der Schwächungslinien 12, 13 und dem U-Schnitt 17. Mit der Oberseite des Deckels 2 ist der Streifen 20 mittels zweier Klebeflächen 21 und 22 verbunden. Die beiden sich quer zur Längserstreckung des Streifens 20 erstreckenden Klebeflächen 21 und 22 haben voneinander einen Abstand, so daß der dazwischenliegende, klebstofffreie Teil 23 des Streifens 20 zusammen mit dem von diesem Teil abgedeckten Bereich der Oberfläche des Dek- kels 2 einen Ventilkanal 24 begrenzt, in den die Schnitte 16 münden. Der dem Endbereich mit der Klebefläche 21 gegenüberliegende Endbe- reich 25 des Streifens 20 ist ebenfalls klebstofffrei, so daß dieser Endbereich 25 als Griff erfaßt werden kann. Die quer zur Längser¬ streckung des Streifens 20 sich erstreckenden Klebeflächen 21 und 22 bestehen aus einem nicht aushärtenden Klebstoff vorzugsweise auf Polyurethanbasis.To close the cuts 16 and 17 acting as openings and to make it easier to lift the starting section 15 out of the cover surface, the area of the starting section 15, the cuts 16 and the ends of the weakening lines 12 and 13 are in platelets or strips 20 on the top the lid 2 attached. The strip 20, which has a rectangular shape, consists of a flexible film, preferably made of plastic, such as polyethylene or polypropylene, and has a thickness of approximately 30 μm. The width of the strip 20 is slightly larger than the distance between the two cuts 16 and the leg of the U-cut 17. Its length is substantially greater than the distance between the ends of the lines of weakness 12, 13 and the U-cut 17. With the top the cover 2, the strip 20 is connected by means of two adhesive surfaces 21 and 22. The two adhesive surfaces 21 and 22, which extend transversely to the longitudinal extent of the strip 20, are at a distance from one another, so that the intermediate, adhesive-free part 23 of the strip 20 together with the region of the surface of the cover 2 covered by this part delimits a valve channel 24, into which the cuts 16 open. The end surface opposite the end region with the adhesive surface 21 Rich 25 of the strip 20 is also adhesive-free, so that this end portion 25 can be detected as a handle. The adhesive surfaces 21 and 22 extending transversely to the longitudinal extension of the strip 20 consist of a non-curing adhesive, preferably based on polyurethane.
Der Deckel 2 mit den Schwächungslinien 12, 13 und Schnitten 16, 17 sowie mit dem Streifen 20 wirkt wie folgt:The cover 2 with the lines of weakness 12, 13 and cuts 16, 17 and with the strip 20 acts as follows:
Während der Lagerung des Verpackungsbehälters mit dem in ihm ver¬ packten Füllgut ist der flexible Streifen 20 flachliegend auf der Oberseite der ebenen Wand 4 des Deckels 2 befestigt. Dabei deckt er die durch die Wand 4 durchgehenden Schnitte 16 und 17 ab, so daß ei¬ ne Verbindung zwischen dem Inneren des Behälters und der diesen um¬ gebenden Atmosphäre unterbrochen ist. Die Dichtwirkung im Bereich des Ventilkanals 24 wird noch erhöht, wenn in diesem ein flüssiges Dichtmittel, beispielsweise Silikonöl, angeordnet ist. Wenn nun das verpackte Füllgut ein Gas abgibt, steigt im Innern des Verpackungs¬ behälters der Druck, der durch die Schnitte 16 auch in den Ventil¬ kanal 24 übertragen wird. Bei steigendem Druck im Innern des Behäl¬ ters wölbt sich der den Ventilkanal 24 nach oben begrenzende kleb¬ stofffreie Teil 23 des flexiblen Streifens 20 nach oben aus, so daß schließlich durch Aufweitung des Kanals 24 eine Verbindung nach au¬ ßen geschaffen wird. Durch diesen aufgeweiteten Ventilkanal strömt Gas aus dem Innern des Verpackungsbehälters so lange ab, bis der Druck unterhalb eines bestimmten Werts gefallen ist, bei dem sich der klebstofffreie Teil 23 des Streifens 20 wiederum auf die Ober¬ fläche des Deckels 2 aufliegt und das Silikonöl einen abdichtenden Film bildet. Dieser Entgasungsvorgang kann an sich mehrere Male wie¬ derholen. Es hat sich gezeigt, daß die Teile des Streifens 20 mit den Klebe¬ flächen 21, 22 den U-förmigen Schnitt 17 und die Enden der Schwä¬ chungslinien 12, 13 vollständig abdichten.During storage of the packaging container with the contents packed therein, the flexible strip 20 is fastened lying flat on the top of the flat wall 4 of the cover 2. It covers the cuts 16 and 17 which go through the wall 4, so that a connection between the interior of the container and the atmosphere surrounding it is interrupted. The sealing effect in the area of the valve channel 24 is further increased if a liquid sealant, for example silicone oil, is arranged in this. When the packaged product releases a gas, the pressure inside the packaging container increases, which pressure is also transmitted through the cuts 16 into the valve channel 24. With increasing pressure in the interior of the container, the adhesive-free part 23 of the flexible strip 20 which delimits the valve channel 24 upwards bulges upward, so that finally a connection to the outside is created by widening the channel 24. Through this widened valve channel, gas flows out of the interior of the packaging container until the pressure has dropped below a certain value, at which the adhesive-free part 23 of the strip 20 in turn rests on the surface of the cover 2 and the silicone oil seals it Film forms. This degassing process itself can be repeated several times. It has been shown that the parts of the strip 20 with the adhesive surfaces 21, 22 completely seal the U-shaped cut 17 and the ends of the lines of weakness 12, 13.
Der Streifen 20 erleichtert auch das Öffnen des Verpackungsbehäl¬ ters. Zum Entfernen des Aufreißteils 10 aus dem Deckel 2 des Ver¬ packungsbehälters wird mit den Fingern der klebstofffreie Endbereich 25 des Streifens 20 erfaßt und hochgezogen. Dabei hebt sich die an den klebstofffreien Endbereich 25 sich anschließende Klebefläche 22 von der Oberfläche des Deckels 2 ab, wobei jedoch der freigestanzte, U-förmige Startabschnitt 15 wegen geringeren Widerstandes am Strei¬ fen 20 kleben bleibt und mit hochgezogen wird. Beim Weiterziehen bricht das Deckelmaterial zwischen den Schenkeln des U-förmigen Schnittes 17 und den Schnitten 16 sowie zwischen diesen und den Enden der Schwächungslinien 12 und 13, so daß der Riß sich in den Schwächungslinien 12 und 13 fortsetzt und auf die den Aufreißteil 10 umgebende Schwächungslinie übergreift, so daß schließlich das Auf¬ reißteil 10 vollständig aus dem Deckel 2 herausgerissen werden kann. Zur Beschaffenheit des Klebers der Klebeflächen 21 und 22 des Strei¬ fens 20 ist zu bemerken, daß der Kleber von nichtaushärtender Art ist und seine Klebeeigenschaften so eingestellt sind, daß dieser sich bei abgewinkeltem Ziehen des Streifens 20 von der Kunststoff¬ oberseite des Deckels 2 löst, daß jedoch der nicht eingespannte, freigestanzte Startabschnitt 15 beim Abziehen mitgenommen wird.The strip 20 also facilitates the opening of the packaging container. To remove the tear-open part 10 from the lid 2 of the packaging container, the adhesive-free end region 25 of the strip 20 is gripped with fingers and pulled up. In this case, the adhesive surface 22 adjoining the adhesive-free end region 25 stands out from the surface of the lid 2, but the punched-out, U-shaped starting section 15 remains stuck to the strip 20 because of less resistance and is pulled up. When moving on, the cover material breaks between the legs of the U-shaped cut 17 and the cuts 16 and between these and the ends of the weakening lines 12 and 13, so that the crack continues in the weakening lines 12 and 13 and on the weakening line surrounding the tear-open part 10 overlaps, so that finally the tear-open part 10 can be completely torn out of the cover 2. Regarding the nature of the adhesive of the adhesive surfaces 21 and 22 of the strip 20, it should be noted that the adhesive is of a non-hardening type and its adhesive properties are set in such a way that when the strip 20 is pulled at an angle, it detaches from the plastic upper side of the cover 2 that, however, the unclamped, punched-out start section 15 is taken along when pulling off.
Bei den Ausführungsbeispielen nach den Figuren 3 und 4 hat der als Überdruckventil und als Grifflasche dienende Streifen 20 im wesent¬ lichen den gleichen Aufbau wie bei dem Ausführungsbeispiel nach Fi¬ gur 1, dagegen sind der Durchbruch zum Durchlassen des Gases durch den Deckel 2 und die Schwächungslinien 12, 13 anders gestaltet. Bei dem Ausführungsbeispiel nach Figur 3 enden die die Aufreißzunge 14 begrenzenden Schwächungslinien 12 und 13 vor dem Streifen 20. In ih- rer Verlängerung schließen sich die Schenkel des U-förmigen Schnitts 17 an, der den freigestanzten Startabschnitt 15 begrenzt. Der U-för- mige Schnitt 17 mit dem Startabschnitt 15 wird von dem einen Ende des Streifens 20 mit der Klebefläche 21 abgedeckt und abgedichtet. Der in den Ventilkanal 24 mündende Gasdurchlaß ist durch einen bo¬ genförmigen Schlitz 27 gebildet, der von dem klebstofffreien Teil 23 des Streifens 20 abgedeckt wird.In the exemplary embodiments according to FIGS. 3 and 4, the strip 20 serving as a pressure relief valve and a grip tab has essentially the same structure as in the exemplary embodiment according to FIG. 1, but the breakthrough for the gas to pass through the cover 2 and the Lines of weakness 12, 13 designed differently. In the embodiment according to FIG. 3, the lines of weakness 12 and 13 delimiting the tear-open tongue 14 end in front of the strip 20. rer extension join the legs of the U-shaped section 17, which delimits the punched-out start section 15. The U-shaped cut 17 with the start section 15 is covered and sealed by the one end of the strip 20 with the adhesive surface 21. The gas passage opening into the valve channel 24 is formed by an arcuate slot 27 which is covered by the adhesive-free part 23 of the strip 20.
Das Ausführungsbeispiel nach Figur 4 ist ähnlich ausgebildet wie das nach Figur 3 mit dem Unterschied, daß die Schwächungslinien 11, 12, 13 nicht als durchlaufende Kerben oder Rillen ausgebildet sind, son¬ dern, daß sie sich aus vielen Kerbabschnitten 29 zusammensetzen, welche abgewinkelte Schnitte 30 als Fangkerben aufweisen.The embodiment of Figure 4 is similar to that of Figure 3, with the difference that the weakening lines 11, 12, 13 are not designed as continuous notches or grooves, but that they are composed of many notch sections 29, which angled cuts Have 30 as catch notches.
Das Öffnen des Verpackungsbehälters nach den Figuren 3 und 4 erfolgt ähnlich wie bei dem oben unter Figur 1 Beschriebenen. Beim Hochzie¬ hen des am klebstofffreien Endbereich 25 erfaßten Streifens 20 wird zunächst die Klebefläche 22 gelöst und beim Lösen der Klebefläche 21 wird dann der Startabschnitt 15 mitgezogen und der Weiterriß in die Schwächungslinien 12, 13 übergeleitet. Ergänzend wird bemerkt, daß die Ausführung der Schwächungslinien 11, 12, 13 aus mehreren Kerbab¬ schnitten insbesondere bei Deckeln vorteilhaft ist, deren Träger¬ schicht aus Karton besteht.The packaging container according to FIGS. 3 and 4 is opened in a manner similar to that described above under FIG. 1. When pulling up the strip 20 gripped on the adhesive-free end region 25, the adhesive surface 22 is first detached and when the adhesive surface 21 is detached, the start section 15 is then pulled along and the tear is transferred to the weakening lines 12, 13. In addition, it is noted that the execution of the weakening lines 11, 12, 13 from a plurality of notch sections is particularly advantageous in the case of lids whose carrier layer consists of cardboard.
In Abänderung zu den Ausführungsbeispielen nach den Figuren 1 bis 4, bei denen der ein Überdruckventil und eine Grifflasche bildende Streifen 20 aus einer einlagigen Folie mit zonenweise aufgetragener Klebstoffschicht für die Klebeflächen 21 und 22 gebildet ist, be¬ steht der Streifen 20* bei dem Ausführungsbeispiel nach Figur 5 aus einer unterseitig vollständig mit Klebstoff 32 beschichteten Folie. Die klebstofffreien Zonen für den Griff-Endbereich 25' und den kleb¬ stofffreien Teil 23 ' für den Ventilkanal 24 werden durch Auf leben von dünnen Abdeckstreifen 33 und 34 gebildet. Diese Abdeckstreifen 33, 34 bestehen aus einer flexiblen Kunststoffolie beispielsweise Polyäthylen, Polyester und dergleichen, mit einer Dicke von etwa 10 um.In a modification of the exemplary embodiments according to FIGS. 1 to 4, in which the strip 20 forming a pressure relief valve and a grip tab is formed from a single-layer film with an adhesive layer applied in zones for the adhesive surfaces 21 and 22, the strip 20 * in the exemplary embodiment consists 5 from a film completely coated on the underside with adhesive 32. The adhesive-free zones for the handle end region 25 'and the adhesive-free part 23' for the valve channel 24 become alive formed by thin cover strips 33 and 34. These cover strips 33, 34 consist of a flexible plastic film, for example polyethylene, polyester and the like, with a thickness of approximately 10 μm.
Der ein Überdruckventil und eine Grifflasche bildende Streifen 20' ' kann auch so ausgebildet sein, daß die Ventilfunktion in den mehr¬ lagigen Streifen 20'' verlegt wird (Figur 6). Der Streifen 20'' be¬ steht aus zwei deckungsgleichen Streifen 36, 37 aus einer flexiblen Kunststoffolie, von denen der obere unterseitig vollflächig mit ei¬ nem Klebstoff beschichtet ist und mit der Oberseite des unteren Streifens 37 außer im Bereich des zu bildenden Ventilkanals 24' 'ver¬ bunden ist, in dessen Bereich die Kleberschicht mit einem querver¬ laufenden Abdeckstreifen 38 kleberinaktiviert ist. Mittig ausgerich¬ tet zum Abdeckstreifen 38 hat der untere Streifen 37 einen Durch¬ bruch 39 der bei auf dem Deckel 2 befestigtem Streifen 20'* in Dek- kung mit dem Durchbruch 27 der Wand 4 des Deckels 2 liegt. Zum Aus¬ bilden des klebstofffreien Griff-Bereichs 25** ist der klebstoff¬ freie Bereich 25'' des unterseitig ebenfalls vollflächig mit Kleb¬ stoff beschichteten Streifens 37 mit einem Abdeckstreifen 33'' ver¬ sehen. Im übrigen ist bei den Ausführungsbeispielen nach den Figuren 5 und 6 der ein Überdruckventil und eine Grifflasche bildende Strei¬ fen 20' und 20'' auf dem Deckel 2 des Behälters in gleicher Weise angeordnet wie bei den Ausführungsbeispielen nach den Figuren 1 bis 4.The strip 20 ″ forming a pressure relief valve and a grip tab can also be designed such that the valve function is laid in the multi-layer strip 20 ″ (FIG. 6). The strip 20 ″ consists of two congruent strips 36, 37 made of a flexible plastic film, of which the upper surface is completely coated on the underside with an adhesive and with the top of the lower strip 37 except in the area of the valve channel 24 ′ to be formed. is connected, in the area of which the adhesive layer is inactivated with a transverse cover strip 38. Centered in relation to the cover strip 38, the lower strip 37 has an opening 39 which, when the strip 20 ′ * is attached to the cover 2, is in alignment with the opening 27 in the wall 4 of the cover 2. To form the adhesive-free grip area 25 **, the adhesive-free area 25 '' of the underside of the strip 37, which is also fully coated with adhesive, is provided with a cover strip 33 ''. Otherwise, in the exemplary embodiments according to FIGS. 5 and 6, the strip 20 ′ and 20 ″ forming a pressure relief valve and a grip tab is arranged on the lid 2 of the container in the same way as in the exemplary embodiments according to FIGS. 1 to 4.
Ergänzend wird bemerkt, daß sich ein kombiniertes Überdruckventil- Grifflascheteil ohne weiteres aufgrund der oben beschrieben Ausfüh¬ rungsbeispiele auch anders ausbilden läßt, ohne vom Geist der Erfin¬ dung abzuweichen. In addition, it is noted that a combined pressure relief valve handle part can easily be designed differently based on the exemplary embodiments described above, without deviating from the spirit of the invention.

Claims

Ansprüche Expectations
1. Leicht offenbarer Verpackungsbehälter mit einem aus einer Wand des Behälters austrennbaren, durch Schwächungslinien definierten Aufreißteil, dessen Startabschnitt mit einer Grifflasche verbunden ist, dadurch gekennzeichnet, daß das die Grifflasche bildende Teil (20, 20', 20'') auch als ein Überdruckventil ausgebildet ist, das einen Durchbruch (16, 27) in der Wand (4) des Verpackungsbehälters verschließt.1. Easily open packaging container with a tear-open part that can be separated from a wall of the container and defined by lines of weakness, the start section of which is connected to a grip tab, characterized in that the part forming the grip tab (20, 20 ', 20' ') is also used as a pressure relief valve is formed, which closes an opening (16, 27) in the wall (4) of the packaging container.
2. Verpackungsbehälter nach Anspruch 1, dadurch gekennzeichnet, daß das eine Grifflasche und ein Überdruckventil bildende Teil aus einem flexiblen Streifen (20, 20', 22'') besteht, der auf der der Behäl¬ terwand (4) zugekehrten Seite zwei sich quer zu seiner Längserstrek- kung erstreckende Klebeflächen (21, 22) aufweist, mittels denen er mit der Außenseite der Behälterwand verbunden ist, wobei eine der Klebeflächen den Startabschnitt (15) mit dem Streifen verbindet und wobei sich zwischen den beiden Klebeflächen zwischen dem Streifen und der Behälterwand ein Ventilkanal (24) erstreckt, in den ein Durchbruch (16, 27) in der Behälterwand (4) mündet.2. Packaging container according to claim 1, characterized in that the part forming a grip tab and a pressure relief valve consists of a flexible strip (20, 20 ', 22' ') which, on the side of the container wall (4), faces two transversely has adhesive surfaces (21, 22) extending to its longitudinal extent, by means of which it is connected to the outside of the container wall, one of the adhesive surfaces connecting the start section (15) to the strip, and between the two adhesive surfaces between the strip and the Container wall extends a valve channel (24) into which an opening (16, 27) opens into the container wall (4).
3. Verpackungsbehälter nach Anspruch 2, dadurch gekennzeichnet, daß der Streifen (20') unterseitig vollflächig mit Klebstoff beschichtet ist und daß die KlebstoffSchicht im Bereich des Griffendes (25) und des den Ventilkanal (24) deckenden Abschnitts (23) mit je einem Ab¬ deckstreifen (33, 34) inaktiviert ist. 3. Packaging container according to claim 2, characterized in that the strip (20 ') is completely coated on the underside with adhesive and that the adhesive layer in the region of the handle end (25) and the portion (23) covering the valve channel (24), each with an ab ¬ cover strip (33, 34) is deactivated.
4. Verpackungsbehälter nach einem der Ansprüche 1 bis 3, dadurch ge¬ kennzeichnet, daß der Startabschnitt (15) des Aufreißteils (10) mit der Klebefläche (22) zwischen dem Griffende (25) und dem Ventilkanal (24) des Streifens (20) verbunden ist.4. Packaging container according to one of claims 1 to 3, characterized ge indicates that the start section (15) of the tear-open part (10) with the adhesive surface (22) between the handle end (25) and the valve channel (24) of the strip (20) connected is.
5. Verppckungsbehälter nach einem der Ansprüche 1 bis 3, dadurch ge¬ kennzeichnet, daß der Startabschnitt (15) mit der dem nicht kleben¬ den Griffende (25) gegenüberliegenden Ende des Streifens (20) ver¬ bunden ist.5. A container according to one of claims 1 to 3, characterized in that the starting section (15) is connected to the end of the strip (20) opposite the non-adhesive handle end (25).
6. Verpackungsbehälter nach Anspruch 4 oder 5, dadurch gekenn¬ zeichnet, daß die sich an den Startabschnitt (15) anschließenden Schwächungslinien unterbrochen sind.6. Packaging container according to claim 4 or 5, characterized gekenn¬ characterized in that the following at the start section (15) lines of weakness are interrupted.
7. Verpackungsbehälter nach einem der Ansprüche 1 bis 6, dadurch ge¬ kennzeichnet, daß der in den Ventilkanal (24) mündende Durchbruch Teil der Schwächungslinien oder des Freischnitts des Startabschnitts (15) ist. 7. Packaging container according to one of claims 1 to 6, characterized ge indicates that the opening in the valve channel (24) opening is part of the lines of weakness or the free cut of the starting section (15).
EP19880905689 1987-08-06 1988-07-07 Packing container with a tear-open arrangement Expired - Lifetime EP0377569B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3726162 1987-06-08
DE19873726162 DE3726162A1 (en) 1987-08-06 1987-08-06 PACKAGING CONTAINER WITH Tear-off device

Publications (2)

Publication Number Publication Date
EP0377569A1 true EP0377569A1 (en) 1990-07-18
EP0377569B1 EP0377569B1 (en) 1991-06-19

Family

ID=6333214

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880905689 Expired - Lifetime EP0377569B1 (en) 1987-08-06 1988-07-07 Packing container with a tear-open arrangement

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Country Link
US (1) US4971218A (en)
EP (1) EP0377569B1 (en)
JP (1) JPH02504500A (en)
DE (2) DE3726162A1 (en)
WO (1) WO1989000955A1 (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5147054A (en) * 1991-05-20 1992-09-15 Pehr Harold T Tamper-proof container
US5242106A (en) * 1991-11-22 1993-09-07 Gulf State Paper Corporation Closed carton assembly with improved opening facilitating cuts
DE4243020A1 (en) * 1992-12-18 1994-06-30 Bosch Gmbh Robert Pressure relief valve for packaging containers
US5419638A (en) * 1993-05-06 1995-05-30 Jamison; Mark D. Pressure sensitive gas valve for flexible pouch
US5326022A (en) * 1993-06-10 1994-07-05 Gulf States Paper Corporation Carton with vent opening arrangement
ES2081266B1 (en) * 1994-08-12 1996-09-01 Mayordomo Alvaro Grandoso DAIRY LIQUID CONTAINER FOR CONSERVATION AND WARMING.
FR2788495B1 (en) * 1999-01-15 2001-04-06 Robert Planet CONCEPT OF CUTTING ON PLASTIC BOTTLE AND REMOVABLE LID FOR STACKING AND RECYCLING OF BOTTLES
DE19954899A1 (en) * 1999-11-15 2001-05-17 Schreiner Etiketten Wall part for containers or the like
JP4716537B2 (en) * 2000-01-28 2011-07-06 花王株式会社 How to store powder detergent
DE10034298A1 (en) * 2000-07-14 2002-01-24 Steinbeis Ppl Gmbh Closure arrangement at an opening in a container wall
NZ507414A (en) * 2000-10-11 2003-02-28 Michael Clements Markham Method of forming a valve bag
US8017681B2 (en) 2006-03-30 2011-09-13 Maxwell Products, Inc. Systems and methods for providing a thermoplastic product that includes packaging therefor
DE102006036137A1 (en) * 2006-07-28 2008-01-31 Q-Bag Packaging Machinery Gmbh & Co. Kg packaging container
US8636034B2 (en) 2011-08-31 2014-01-28 Plitek, L.L.C. Oil-less and wetted pressure relief valves having an integrated filter
US9187229B2 (en) 2011-08-31 2015-11-17 Plitek, L.L.C. Oil-less pressure relief valves
US8783292B2 (en) 2011-08-31 2014-07-22 Plitek, L.L.C. Oil-less pressure relief valves
US9181007B2 (en) 2013-03-12 2015-11-10 Rexam Beverage Can Company Beverage can end with vent port
US9926102B2 (en) 2014-06-05 2018-03-27 Maxwell Properties, Llc Systems and methods for providing a packaged thermoplastic material
US10358296B2 (en) 2015-09-18 2019-07-23 Maxwell Properties, Llc Systems and methods for delivering asphalt concrete
US9598204B1 (en) * 2016-01-20 2017-03-21 Albion Engineering Company Lid with breakaway skim plate for container for loading bulk material therefrom
US10358275B1 (en) 2017-06-16 2019-07-23 Plitek, L.L.C. Pressure relief valve with a plural-part dry strap
BR112022000966A2 (en) * 2019-07-30 2022-03-22 Kikuo Yamada Cover
US11352183B2 (en) 2020-03-05 2022-06-07 Plitek, L.L.C. Pressure relief valve with wetting fluid reservoirs

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946502A (en) * 1954-11-10 1960-07-26 Melvin R Metzger Valve-equipped containers
DE1909232A1 (en) * 1969-02-25 1970-09-17 Costello Alfred Patrick Valve for packaging
US3989182A (en) * 1976-02-12 1976-11-02 Great Plains Bag Corporation Vented bag
SE422672B (en) * 1976-07-08 1982-03-22 Ziristor Ab WITH OPENING DEVICE PROVIDED PACKAGING CONTAINER
US4215791A (en) * 1979-08-06 1980-08-05 Minnesota Mining And Manufacturing Company Easy open closure system
US4261504A (en) * 1979-09-21 1981-04-14 Maryland Cup Corporation Heat-sealable, ovenable containers
US4461420A (en) * 1982-03-05 1984-07-24 Cod Inter Techniques Sa Ventable package cover
CH659228A5 (en) * 1983-04-08 1987-01-15 Asepta Ag CONTAINER WITH LID FOR GAS DRIVE PRODUCTS.
GB2168312B (en) * 1984-12-13 1989-05-17 Metal Box Plc Containers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8900955A1 *

Also Published As

Publication number Publication date
DE3726162A1 (en) 1989-02-16
WO1989000955A1 (en) 1989-02-09
JPH02504500A (en) 1990-12-20
EP0377569B1 (en) 1991-06-19
DE3863359D1 (en) 1991-07-25
US4971218A (en) 1990-11-20

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