DE20002880U1 - Packaging for a flowable filling material - Google Patents

Description

Meissner, Bolte & Partners "

Law firm GbR

PO Box 860624
S1633 Munich

17 February 2000

Van Leer Packaging M/VRG-016-DE

(Germany) GmbH & Co. KG MB/PO/HZ/hk

Heinrich-Nicolaus-Str. 6
87671 Ronsberg
Federal Republic of Germany

Packaging for a flowable product Description

The invention relates to a packaging, in particular a brickpack, stand-up or sealed edge flat bag, for a flowable filling material according to the preamble of claim 1 or 2.

Such packaging, which is made in particular from composite film, with aluminum, transparent barrier or metallized plastic film or metal foil, has long been known in a variety of designs. For example, see EP 0 130 666 A2, US 5,150,833, EP 0 416 256 A2 or US 5,547,284.

Everyone knows from everyday life that - despite the development efforts invested in such packaging - many commercially available packaging of this type are relatively cumbersome to handle when pouring or pouring out the contents. As a rule, both hands and often even a tool are required to open the packaging. With many packages, it requires special skill to prevent the surface from becoming dirty when pouring or to achieve a dosage (e.g. when cooking or with detergents), which makes handling very difficult or sometimes almost impossible, especially for older people or children.

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Meissner, Bolte & Partner " "m/vrg-016-de

EP 0 416 256 A2 describes a milk or sauce package in the form of a tube with a lid and base, in which an opening device is provided in the lid. This comprises a flap that can be torn open along a weakening line and has an injection-molded plastic handle, which, when torn open, exposes a pouring opening. The structure of this package, in which the lid has injection-molded rib-shaped bridges, with the aforementioned tear-open flap being connected to one of these bridges, is relatively complicated and expensive to manufacture.

US 5,150,833 describes a cuboid-shaped cardboard beverage package which has a wall section which is attached to the front wall when delivered and is raised to form a type of pouring spout when in use, and in which a pouring opening is punched out. A flat cylindrical elevation is provided to position this pouring opening when the wall section is attached to the front wall, which can engage in the pouring opening and keep it closed when the packaging is not in use. This closure wears out quickly and is therefore only suitable for products which are used up quickly.

WO 99/19232 shows a package for milk products which is cuboid in its basic shape and has an inclined lid surface into which a bottle neck with a screw cap protruding from the plane of the lid is inserted. This closure, which is also used in a large number of similar packages - for example for mayonnaise - is comparatively bulky both in storage and when in use.

The invention is based on the object of specifying an improved packaging of the generic type, which is characterized in particular by small space requirements, relatively low manufacturing costs and reliable function and pleasant usability over a long period of use.

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The object is achieved by a packaging having the features of claim 1 or by a packaging having the features of claim 2.
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The invention includes the basic idea of replacing the screw cap, which has proven itself for longer-lasting products that are only removed in small quantities, with a much flatter cap that barely protrudes from the plane of the surrounding cover or side surface. It also includes the idea of moving from the screw cap principle - the principle requires a relatively large construction height of the cap - to the principle of the turntable or slider, which only requires a very small construction height.

In the currently preferred design, this closure closes a single pouring opening in the packaging.

According to a special design, the actual closure piece and/or the associated pivoting lever or the rotary disk or the slider has a plurality of pouring openings with different cross-sections. Depending on the angular position of the pivoting lever or the rotary disk or the translational position of the slider, there is at most one continuous connection between the inside of the packaging and the outside.

The closure can be designed in such a way that the closure piece has a plurality of openings with different cross-sections and possibly also different shapes (whereby a "pouring opening" is also to be understood as a group of smaller openings belonging together, such as in a salt shaker) and the associated pivoting lever or the turntable or the slide with a

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a large opening area, each of these openings is exposed.

Alternatively, the closure piece can also have a large opening, to which one of several openings provided on it can be brought into a corresponding position by turning the pivot lever or the rotary disk or moving the slide. Finally, both the actual closure piece and the closure element (pivot lever, rotary disk or slide) can have several openings. By assigning different opening areas to both elements, particularly differentiated cross-sectional gradations and outflow properties can be achieved.

When the packaging is delivered, the pouring opening or openings are conveniently closed with a cover, preferably a peelable sealing film or a sealing film that can be penetrated or a seal on the rotating tab or the slider of the closure. This prevents accidental emptying if the closure element is accidentally twisted or moved during transport or handling and ensures that the interior of the packaging is almost or completely hermetically sealed before it is used for the first time.

The sealing film is particularly applied to the pouring opening or openings in the actual closure piece, as this is inserted tightly into the packaging wall and sealing the openings at this point is the best way to achieve an airtight seal of the packaging. Alternatively, the seal can also be applied to an opening or openings in the pivoting lever, the turntable or the slide. In this latter version, a sealing film can be applied to the surrounding areas of the side or top surface in which

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The closure piece is arranged with a capturing seal. This is then also practically airtight.

In a particularly space-saving and cost-effective design, the closure piece has a flat plastic base body (e.g. formed from a film) in which a flat plastic closure element is mounted. Both parts are expediently deep-drawn from a thermoplastic and punched or injected. The plastic base body and the closure element can basically also be made from one piece and differentiated in their respective functions, for example by suitable folding.

In the case of a pivoting lever closure piece, the plastic pivoting lever expediently has a substantially flat handle section extending parallel to the plane of the side or top surface, which is practically slidably mounted on the surface of the packaging or at least pivoted at a very short distance from it.

In a turntable closure piece, the associated plastic turntable has a profiled peripheral edge that is easy for the user to grasp and rotate or a raised, essentially radially extending grip section.

In the case of a slide closure piece, the slide expediently has an upright actuating section which extends in particular perpendicularly or inclined to the actuating direction of the slide.

The design described above as advantageous with openings in the actual closure piece that are sealed when delivered can be achieved by, among other things, removing the closure element, i.e. the pivoting lever, the rotary disc or the slide, from the base body.

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The sealing foil can be removed and the closure element can be reinserted and then remains in the closure piece for further use. A seal applied to the closure element from the outside or a closure with a seal under a slider is easier to handle. In the latter case, the seal on the opening can be easily removed after the slider has been pulled back - or at the same time as it is moved.

Due to their ease of use, designs in which the closure element itself has means for unsealing the sealed bag opening are particularly advantageous. In particular, conical, pyramidal or even hemispherical extensions on the underside of the closure element are proposed as such, which (similar to that described above for the opening of the closure element) are brought into position with the sealed opening by turning or moving relative to the base body and destroy the sealing film attached there or a particularly thin area of the base body itself - due to their shape and material elasticity or (preferably) by moderate pressure exerted by the user.

A further advantageous embodiment provides that the bag opening is essentially sealed by a wall section of the bag itself that is adjacent to the inside of the bag. In the case of a sealed edge flat bag, in which the proposed closure is attached to one of the two side walls in a corner area, the opposite side wall around the bag opening is peelably connected to the side wall carrying the closure in the delivery state. The user then applies moderate pressure to the side walls to burst open the sealing line surrounding the opening, with the still closed closure temporarily preventing the bag contents from escaping.

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Meissner, BOLTE & Partner

In the case of a so-called brickpack packaging, the closure is provided in the folded-over "triangle" placed on the front wall of the packaging cuboid within the framework of this development of the inventive concept. Here too, the opening is essentially closed by the connection with the adjacent rear material layer, and after the aforementioned packaging section has been detached from the front wall of the brickpack, it is unsealed by the lateral pressure on the corner areas (which is usual for these types of packaging). This lateral pressure pushes the two layers of material that were previously adjacent to one another away from one another, and a sealing seam provided around the bag opening is destroyed.

A preferred embodiment is one in which the respective closure piece and the base body are designed in such a way that the former is captively mounted in the latter. Stop or locking means are expediently provided for this purpose.

A further advantage is an embodiment in which the closure element is sealed to the packaging wall (or to the base body) in such a way that it can be removed, so that the integrity (originality) of the packaging can be easily determined. Before the first use, the seal is removed and the closure element can then be moved in the base body as intended.

Advantages and benefits of the invention will become apparent from the dependent claims and the following description of preferred embodiments with reference to the figures. These show:

Fig. 1 is a sketchy perspective view of a Brickpack packaging with a turntable

Meissner, Bolte & Partner

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Closure piece according to an embodiment of the invention,

Fig. 2 is a plan view of a rotary disk closure piece according to a first embodiment of the invention,

Fig. 3 is a plan view of a slide closure piece according to a second embodiment of the invention,

Fig.4

a plan view of a pivot lever locking piece according to a third embodiment of the invention,

,Fig. 5 is a plan view of a slide closure piece according to a fourth embodiment of the invention,

Fig. 6 is a perspective view of a brickpack bag modified from Fig. 1 with a rotary disc closure piece according to a fifth embodiment of the invention,

Fig. 7 is a plan view of a slide closure piece according to a sixth embodiment of the invention,

Fig. 8 is a plan view of a rotary disk closure piece according to a seventh embodiment of the invention

and

Fig. 9 is a plan view of a slide closure piece according to an eighth embodiment of the invention.

Fig. 1 shows schematically a substantially cuboid-shaped so-called brick pack 1 made of foil-coated cardboard, for example for holding condensed milk, mayonnaise, salad dressings or the like. The stand-up bag 1 has on its cover surface la a turntable closure piece 3 with a rotatably mounted

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Rotating disc 5. This has a pouring opening 7, which can be brought into position with another pouring opening (not shown) provided in the closure piece by rotating the rotating disc 5 relative to the closure piece 3, whereby the stand-up pouch 1 is opened for the removal of contents. In the delivery state, the pouring opening 7 and/or the pouring opening (not shown) of the closure piece 3 is hermetically sealed with a sealing film. This is removed before the stand-up pouch 1 is used for the first time.

Fig. 2 shows a top view of a turntable closure piece 9 modified from Fig. 1, with a plastic base body 11 and a turntable 13, also made of plastic, inserted into it. The base body 11 has a circular segment-shaped peripheral edge 15 extending over slightly more than 180°, in which the turntable 13 is mounted so as to be able to rotate without an axis. The turntable 13 has a pouring opening 17, and the base body 11 has three pouring openings 19a, 19b, 19c with different cross-sections or different shapes. With respect to the geometric axis of rotation A opposite the pouring opening 17 of the turntable 13, the latter has a radially extending, upright gripping web 21 which the user can grasp with his thumb and index finger and with which the turntable can be easily rotated. By selecting the appropriate angular position, the pouring opening 17 of the turntable 13 is aligned with one of the pouring openings 19a to 19c of the base body 11, whereby the respectively selected pouring opening of the base body is put into operation.

The rotating disk 13 can be removed from the base body 11 by pulling it slightly. This opens up the possibility of attaching a sealing film to the base body 11 in the delivery state of the packaging (not shown here), covering all the pouring openings 19a to 19c of the base body 11, which seals the

Meissner, Bolte & Partner m/vro-*016-de

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pack is hermetically sealed. After sealing, the turntable is inserted into the base body in the production process. The user temporarily removes the turntable, removes the sealing film and reinserts the turntable, thus creating the state of use shown in Fig. 2.

In Fig. 3, a further embodiment of the invention is shown in a slide closure piece 23, which can again be made entirely of plastic and comprises a base body 25 and a slide 27. The slide 27 is guided in a substantially U-shaped peripheral edge 29 of the base body 25. It has a slide pouring opening 31, which can be moved to position it in line with one of two base body pouring openings 33a, 33b in order to empty the packaging (again not shown) through the selected base body pouring opening. To facilitate handling, the slide 27 has a raised handle 35, which extends perpendicular to the direction of actuation and thus ensures good force introduction.

Fig. 4 shows a pivot lever locking piece 37, which has a base body 37 with an approximately semicircular surrounding edge 39 and a pivot lever 41 which is pivotally mounted about a rotation axis 43 of the base body 37 and has a handle section 41a with an actuating pin 45 protruding at its end.

A pivot lever pouring opening 47 is provided with respect to the geometric axis of rotation A opposite the actuating pin 45. The base body 37 has three base body pouring openings 49a, 49b, 49c with different cross-sections or different shapes, which can be selectively aligned with the pivot lever pouring opening 47 by rotating the pivot lever 41.

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In the designs according to Fig. 3 and 4, the slide closure piece 23 and the pivot lever closure piece 35 are also designed for temporary removal of the associated closure element - the slide 27 or the pivot lever 41 - so that here too an easy sealing of the respective base body pouring openings is possible before delivery of the packaging. However, it should be pointed out that the removability of the respective closure element is not a necessary condition for the advantageous sealing of the pouring openings of the closure piece base body, but that (easier to handle) designs are also possible in which such a sealing film can be removed without removing the closure element. It is particularly advantageous to attach the sealing film in such a way that it is automatically torn off or opened when the closure element is first operated, so that no additional manual action is required to unseal the packaging. On the other hand, easy removal is also possible by providing a handle tab that protrudes slightly from the packaging.

Fig. 5 shows a corner area of a sealed edge flat bag 51 with a slide closure piece 53 made of punched plastic film sealed at an angle of 45° to both boundary edges. The slide closure piece 53 comprises a base body 55 and a slide 57 inserted into it, the front end of which, in the closed state shown in the figure, covers an approximately semicircular pouring opening 59 arranged near the sealed edge 51a.

The elongated U-shaped slide 57 has a handle 61 with a grip recess 61a protruding from the base body 55. In its section guided in the base body 55, a stop 63 is provided, which, in cooperation with a safety web 65 provided at the end of the base body 55, ensures the safety of the

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ability of the slide in the base body. In the area of the securing web 65, a locking mechanism 67 is formed by corresponding shapes of the slide and base body, which prevents unintentional displacement of the slide and the associated release of the pouring opening 59.

In the case of the sealed edge flat bag shown here, the possibility mentioned above can be implemented of ensuring the bag's tightness in the delivery state by means of a relatively weak seal on both bag side walls around the pouring opening 59, which can be broken open by lateral pressure on the bag 51.

Alternatively or additionally, the pouring opening 59 can be sealed with a sealing film (for example made of approximately 60 μιλ thick polyethylene or a composite film made of 12 μιη polyethylene and 60 μιη polypropylene). This becomes accessible to the user after the slide 57 is pulled back and can be removed by hand.

Furthermore, the slider 57 can be sealed to the bag wall (for example with hot melt) in the area of the handle 61, so that it must be unsealed by pulling vertically away from the bag wall before it is used for the first time. This slider seal provides a simple and advantageous way of verifying the authenticity of the bag 51.

Fig. 6 shows a modified version of the brick pack shown in Fig. 1 and described above. The brick pack bag 1' differs from the version described above in that a (slightly reduced) turntable closure piece 3' with a turntable 5' is arranged here - instead of on the cover surface - in the triangular section Ic' attached to the front wall Ib' of the packaging. In this version

Meissner, BOLTE& Partner m/vrG-016-de

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The pouring opening (not shown) of the closure piece is tightly sealed by sealing the wall in the peripheral area of the opening to the other bag wall located at the back. When the bag 1' is opened, this seal is broken in the manner outlined above and a connection is established between the pouring opening and the bag contents.

Fig. 7 shows another slide closure piece 69 with a base body 71 and a slide 73. Its functional principle corresponds to that of the closure pieces shown in Fig. 3 and 5. Here too, a stop 75 is provided which, in conjunction with a securing web 77 on the base body 71, makes the slide 73 captive. The base body 71 here has a peripheral edge 79 which is not completely closed. The recess in the front area (on the left in the figure), where the pouring opening 81 is provided, ensures easier, drip-free pouring of liquid bag contents.

This figure shows how the pouring opening 81 is covered with a sealing film 83 and the bag is thus hermetically sealed. In the position corresponding to the pouring opening 81, a flat pin 85 is provided on the underside of the slider 73, which, when brought over the pouring opening 81 by moving the slider 73, pierces the sealing film 83 when pressure is applied vertically from above to the front section of the slider and thus unseals the pouring opening 81.

To ensure that this does not happen accidentally before the packaging is deliberately used, the slider 73 is fixed in the position shown in the figure when delivered. This is done by means of a fixing point 87 on the end of the slider, which is designed as a grip tab 89 with a grip opening 89a. Only after the grip tab has been grasped by the user

Meissner, Bolte & Partner

M/VRO-016-EN

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and pulled upwards away from the bag surface and so that the fixing point 87 has been released from the bag wall, the slide can be moved and the pouring opening 81 can be opened by means of the mandrel 85. This entire operation can advantageously be carried out one-handed.

Fig. 8 shows a rotary disk closure piece 91 modified compared to Fig. 2, with a base body 93 and a rotary disk 95. The base body is modified in that it has - similar to the design according to Fig. 7 - a recess 99a in the peripheral edge 99 near the pouring opening and in the flow direction of a liquid emerging from this in the position of use. ^: .

The rotating disk 95 itself is initially modified in that it has a grooved edge 95a (instead of a handle bar). Furthermore, it has only a single pouring opening 101, which must be brought into position with the main body pouring opening 97 in order to open the closure.

In addition, an approximately conical or pyramid-shaped extension (thorn) 103 is provided on the underside of the turntable, which, analogous to the mandrel 85 in the embodiment according to Fig. 6, serves to pierce a sealing film (not shown) attached above the pouring opening 97 upon delivery.

With this closure, an unwanted rotation of the turntable with the possible result of an unintentional piercing of the sealing film above the pouring opening in the base body is prevented either by fixing the turntable, for example by means of a sealing point applied from above (not shown).

In order to ensure easy sliding on the pouring opening in the embodiments according to Fig. 6 and 8, regardless of the mandrel provided on the underside of the slide or the rotary disk,

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the respective base body, the area of the slide or turntable in which the mandrel is provided can be curved upwards, so that the tip of the mandrel, when unloaded, is no lower than the underside of the slide or turntable outside the curved area. Only by pressing with a finger from above is the curved area together with the mandrel moved downwards and the sealing film above the pouring opening pierced. The mandrel - or a differently shaped (e.g. hemispherical) extension on the underside of the movable closure element - has a similar effect in a design of the base body in which the opening is initially closed by the material of the base body itself, which may have a smaller thickness here.

Fig. 9 shows another, particularly simple slide closure piece 105, whose base body 107 and slide consist of punched, undeformed plastic film. The base body 107 here has relatively wide side areas 107a, in which it is sealed onto the bag material, and a connecting web 107b extending between these, under which an additional fixing point 110 is provided. This serves, in addition to the inner edges of the side areas 107a, as a central guide for the slide 109, which here has an elongated hole 111 in which the fixing point 110 "runs". The pouring opening 113 can be sealed in a similar way to the above examples.

Furthermore, the embodiment of the invention is not limited to the examples described above, but is also possible in a multitude of modifications that are within the scope of expert action.

Meissner, Bolte & Partner

- 16 List of reference symbols

1; 1 ' ; 93 9; 91 9b, 49c Brickpack bag la ' ; 29 13; 95 Cover area Ib' 7; 17; 1 101 Front wall I' 11; 35 triangular section 3; 3 15; 53 ; 39; 79; 99 Turntable locking piece 5; 5 19a, 55 9b, 19c; 9.7 turntable 21; 57 Pouring opening (of the turntable) 23; ; 69; 105 Plastic base body 25; ; 71; 107 Surrounding edge 27; ; 73; 109 Pouring opening (of the base body) 31 «·· ···· ·· ·· ·*
«·· ·*····
• · ··· * · · · · Handlebar 33a, 33b; 59; 81; 113 Slide closure piece 35 Base body 37 Slider 41 Slide pouring opening 41a Base body pouring opening 43 Swivel lever locking piece 45 Base body 47 Swivel lever 49a, 4 Handle section 51 Rotation axis 51a Actuating pin 61 Swivel lever pouring opening 61a Base body pouring opening 63; 75 Sealed flat bags 65; 77 Seal edge 67 Handle 83 Grip recess 85 attack Safety bridge Detent Sealing film mandrel Z &idigr; * J ·· ···· ·· ·
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Meissner, Bolte & Partner

89a 95a 99a 107a 107b 111

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Fixing point Grip tab Grip opening Grooved edge Recess (of the surrounding edge) Side area Connecting bar Slotted hole

geometric axis of rotation

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Claims (13)

1. Packaging, in particular brickpack, stand-up or sealed edge flat bag ( 1 ; 1 '), made of composite film with aluminum, transparent barrier or metallized plastic film or metal foil, for a flowable filling material, which is formed by welding or gluing from one or more flat material cut or cuts, characterized by a pivoting lever or rotary disk closure piece ( 3 ; 3 ';9; 35 ) inserted into a side or cover surface ( 1a ) with at least one pouring opening ( 19a -c; 49a -c) and a pivoting lever ( 41 ) or a rotary disk ( 5 ; 5 '; 13 ) which is mounted so as to be rotatable about an axis of rotation (A) perpendicular to the side or cover surface and which releases the pouring opening in a first angular position and closes it in a second angular position. 2. Packaging, in particular brickpack, stand-up or sealed edge flat bag ( 1 ; 1 '; 51 ), made of composite film with aluminum, transparent barrier or metallized plastic film or metal film, for a flowable filling material, which is formed by welding or gluing from one or more flat material cut or cuts, characterized by a slide closure piece ( 23 ; 53 ; 69 ; 105 ) inserted into a side or cover surface with a base body ( 25 ; 55 ; 71 ; 107 ) with at least one pouring opening ( 33a , 33b ; 59 ; 81 ; 113 ) and a slide ( 27 ; 57 ; 73 ; 109 ) which is mounted in the slide closure piece so as to be displaceable parallel to the side or cover surface and in a first position the Pouring opening is released and closed in a second position. 3. Packaging according to claim 1 or 2, characterized in that the pouring opening or the pouring openings ( 7 ; 17 ; 19 a-c; 31 ; 33 , 33 b; 47 ; 49 a-c; 59 ; 81 ; 113 ) is/are sealed in the delivery state, in particular with a removable sealing film or by a detectable sealing seam. 4. Packaging according to claim 3, characterized in that the packaging wall having the pouring opening or openings is, in the delivery state, connected to a further section of the packaging wall on the rear side opposite around the circumference of the pouring opening or openings in a sealed but tearable or peelable manner. 5. Packaging according to claim 3, characterized in that the pivoting lever or rotary disk or slide closure piece and the pivoting lever or rotary disk or slide in the delivery state are essentially completely covered by a sealing film which is sealed onto the packaging around the respective closure piece. 6. Packaging according to claim 3, characterized in that the pivoting lever ( 41 ) or the turntable ( 5 ; 5 ';13; 95 ) or the slide ( 27 ) has at least one pouring opening ( 7 ; 17 ; 31 ; 47 ) and this pouring opening or openings is/are closed by the sealing film. 7. Packaging according to one of the preceding claims, characterized in that the pivoting lever or the turntable or the slider is removably sealed to the packaging wall in the delivery state. 8. Packaging according to one of the preceding claims, characterized in that the pivoting lever or the turntable or the slider ( 57 ; 73 ; 109 ) is captively received in the respective associated closure piece ( 55 ; 71 ; 107 ), in particular by locking means ( 63 , 65 ; 75 , 77 ; 110 , 111 ). 9. Packaging according to one of the preceding claims, characterized in that the pivot lever or rotary disk or slide closure piece ( 3 ; 3 ';9;23;35;53;69; 105 ) has a flat plastic base body ( 11 ; 25 ; 37 ; 55 ; 71 ; 107 ) in which a flat plastic pivot lever ( 41 ) or a flat plastic rotary disk ( 5 ; 5 '; 13 ) or a flat plastic slide ( 27 ; 57 ; 73 ; 109 ) is mounted: 10. Packaging according to claim 9, characterized in that the plastic pivot lever ( 41 ) has a substantially flat handle portion ( 41a ) extending parallel to the plane of the side or top surface. 11. Packaging according to claim 9, characterized in that the plastic turntable ( 13 ; 95 ) has a raised, substantially radially extending handle portion ( 21 ) or a profiled peripheral edge ( 95a ). 12. Packaging according to claim 9, characterized in that the plastic slider ( 27 ; 57 ; 73 ) has a raised handle section ( 35 ) extending in particular perpendicularly or inclined to its direction of movement or a grip recess ( 61a ) or a grip tab ( 89 ). 13. Packaging according to one of the preceding claims, characterized in that the pivoting lever or rotary disk or slider base body ( 11 ; 25 ; 37 ) and/or the pivoting lever or the rotary disk or the slider has a plurality of pouring openings ( 19 a-c; 33 a, 33 b; 49 a-c) with different cross-sections, of which at most one connection is established between the packaging interior and the outside space depending on the angular position of the pivoting lever or the rotary disk or the position of the slider.