CA2000971A1

CA2000971A1 - Pack for material packed in a film bag contained in a folding box

Info

Publication number: CA2000971A1
Application number: CA 2000971
Authority: CA
Inventors: Dieter Vom Hofe
Original assignee: Henkel AG and Co KGaA
Current assignee: Henkel AG and Co KGaA
Priority date: 1988-10-22
Filing date: 1989-10-18
Publication date: 1990-04-22
Also published as: WO1990004552A1; JPH04501098A; DE3836069C1; EP0439499A1; ES1011785Y; ES1011785U; PT92062A; EP0365941A1; RU1801097C; DD292632A5; TR24758A

Abstract

ABSTRACT OF THE INVENTION

In a pack for material to be packed in a film bag, the film bag being contained within a folding box formed from a box blank provided with a head flap part. The latter is formed with an opening symmetrical in relation to a crease line, for receiving a pouring and/or closure system of the bag in the in-use position. One region of the head flap part is folded about the crease line onto another region of the head flap part in the closed position, for uncovering the opening at the crease line.

Description

0009~1.

KWlO0389/903.1.063 D 8435 PACK FOR MATERIAL PACKED IN A FILM BAG
CONTAINED IN A FOL~ING BOX

BACKGROUND

1.0 Field Of The Invention: -This invention relates generally to packs for material packed in film bags, and more particularly to such packs in which the film bags are contained within a folding box.

2.0 Discussion Of Related Art:
Bag-in-box packs are typically used to accommodate liquids in varying amounts. Thus, such packs are known for foods, more especially beverages, and also for dishwashing detergents, lubricants and the like. These packs have the advantage that only the bag accommodating the material to be packed need be made of a high-quality plastics material, whereas the other parts of the pack, particularly those which absorb mechanical stressing, can be accommodated by an inexpensive carton of corrugated cardboard or the like. It is 15 known in this regard that the closures can be left inside the ~ -carton during the transportation of such containers, or may be supplied as separate elements to the user or consumer, who then has to fit them to the container for use.
Both the unpacking of the closures and their fitting to the folding box, and the connection of the closures to the inner bags by the user, often lead to misunderstandings and .

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-difficulties, are often complicated, and despite possible written and pictorial instructions, are too difficult for many users.

3.0 Summary of The Invention:
An object of the present invention is to provide an improved bag-in-box pack that can be immediately assembled into its final state at the factory.
According to the invention, this cbject is achieved in a pack in which the folding box blank is provided with a head flap part which is formed with an opening, symmetrical in relation to a crease line, for receiving a pouring and/or closure system of the bag contained thereon in the in-use position. One region of the head flap part is folded about the crease line onto the other region of the head flap part in the closed position, for uncovering the opening at the crease line.
The effect of this design of the head flap part as a double-wall region with a single-ended opening in the in-use position is that this opening can both accommodate various requirements of the closure systems, and provide for making the materials forming the folding box relatively thinner, via double-wall construction in the stressed areas.
In another embodiment of the invention, another head flap part is provided with a free closure edge for closing the free end of the opening in the closed position of the box blank.
This simplifies the prefabrication work at the factory to a very considerable extent. Thus, after the folding box has been assembled and glued with a hotmelt or otherwise fixed, the .

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closure system of the inner bag can be inserted into the one opening in the one head part. The head part is then lowered into the closed position, and the other closure flap both closes the insertion opening for the removal valve, and closes ;
the folding box.
In another embodiment of the invention, other head flap parts are provided on the box blank so that, in the in-use position, the head region is at least double-walled. These head flap parts may be designed in a known manner as glue flaps and when abutting in the middle, they have a sufficient width for covering the entire surface of the upper side of the pack.
Openings may be punched in them for the bag to pass through, and so forth. -Another embodiment of the invention provides that the opening for receiving the closure of the bag contained within the box is disposed at a peripheral edge of the folding box to -facilitate handling. In the case of a square folding box, the opening is best disposed near the edge between the head surface and one of the narrow sides.
In another embodiment of the invention, the side wall of the folding box diagonally opposite the pouring opening is double-walled in the in-use position. This embodiment enables a handle to be provided on this side wall, for example, by -gluing the handle thereto as a separate element.
To the same end, another embodiment of the invention provides that, in the blank, the flaps for forming this double-walled side wall are provided with oppositely directed openings lying one above the other in the in-use position, and with fold .', : . ., .. :

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, 2(~09~71 or crease lines for forming a handle. This enables a grip opening with reinforced edges to be provided as a handle on the pack directly from the material of the double-walled side wall.
Another embodiment of the invention includes rectangular openings in the head flap to receive a closure and pouring element, which has to be turned during handling; this element is thus prevented from turning as a whole by the restraining action of the rectangular opening.

Brief Description Of The Drawings:
The invention is described by way of example below with reference to the accompanying drawings, in which like items are indicated by the same reference designation, wherein:
Figure 1 shows a box blank for the pack according to one embodiment of the invention.
Figure 2 shows an alternative embodiment of the opening in a head flap.
Figure 2a shows the corresponding configuration of the associated other head flap for the opening according to Figure 2.
Figure 3 is a sectional view through a part of the pack with a pouring spout.
Figure 4 shows part of a side wall with crease lines diagonally opposite the pouring spout.
Figure 5 shows a phase in the folding of the punched wall regions in Figure 4 for forming a grip opening.
Figure 6 shows another position of the grip opening.

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. . . : : -20~0971 DETAILED DESCRIPTION OF THE INVENTION
To form a rectangular pack, the box blank generally denoted by the reference 1 in Figure 1, and shown schematically in section in Figure 3, includes from left ~o right in the embodiment illustrated, a first adhesive flap 2 for a side wall, a side wall 3, a narrow side wall 4, a side wall 5 and another glue flap 6, which corresponds directly to the first glue flap 2 in the closed position and which in turn is provided at its edges with further bottom and head flaps.
In the embodiment illustrated in Figure 1, the flaps of interest are lower bottom flaps 7 and 8, a flap 9 forming the bottom with a flap 10 on the glue flap 6. In the case of the upper parts of the blank, from left to right the flaps o~
interest are a first head flap 11, the following head flap part 12, another head flap 13, and a head flap part 14 described below.
The head flap part 12 includes an opening 15 of which the outline is symmetrical about a crease line 16. In the embodiment shown in Figure 1, the opening 15 is substantially 20 ~ rectangular with corners in the vicinity of the crease line.
In the packaging position, the upper part 12a of the head flap 12 is turned through 180~ about the crease line 16 to rest onto the shaded part 12b, and optionally glued thereto. This results in the formation of a single-ended insertion opening 15b (Figure 3) for a closure, as schematically illustrated, of a liquid container within the folded box in the form of a film bag 19.
The head flap parts 11 and 13 each comprise semicircular ' ' ~ ': ~ ' .. ' . ' . ; . : , ~ . , ~ .~ . . . .

20C1 0971.
openings 20, which correspond with the opening 15b in the closed position. The open end of the opening 15b after folding of the head flap part 12a onto the head flap part 12b is closed by a ~ree closure edge 21 on the head flap part 14, after insertion of the closure 18 into the opening 15b.
Figures 2 and 2a show an opening 15a, which is round in the in-use position, and into which a round closure element can be inserted without being fixed in its axial position, while openings 15b fixes a corresponding closure in position and lo prevents it from turning, which is particularly appropriate in the case of screw closures or rotatable tap closures.
To form a handle, the narrow side wall which is diagonally opposite the closure or pouring opening 18 in the in-use position, and which is formed from the flaps 2 and 6 is provided with a grip opening formed by two cutouts in the flaps 2 and 6, the punch and crease lines running in opposite directions. The inner flap 2 in the in-use position has an upwardly extending, substantially U-shaped punched line 22 and a crease line 23, permitting the punched-out flap 24 to be turned inwards, as shown in Figure 5.
Conversely, the outer flap 6 in the in-use position, which is, for example, glued to the flap 2, comprises a downwardly extending punched edge 25 and two crease lines 26 and 27 about which it can be folded inwards and upwards, as shown in Figures 5 and 6. The two crease lines enable the material thickness of the box wall of the flap part 2 to be bridged. The end position is shown in Figure 6. An opening having this configuration can serve as a handle. The liquid . . . , .. ~ , ..

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2000971.
pressure inside the bag 19 closes this opening via the flap element 24, as indicated by the double arrow 28 in Figure 6.
As shown, the flap 24 is punched out further down than the opening 25, i.e. the crease line 23 is lower than the punched edge 25 so that the flap 24 can be folded back more easily in the direction of the double arrow 28 onto the outer wall 6, as shown in chain lines in Figures 5 and 6.
As shown in Figures 1 and 2, the openings 15 and 15a are disposed in the vicinity of an edge 29 (see Figure 3) of the folding box 2 to facilitate pouring out the material contained in bag 19.
The described embodiments of the invention are given for purposes of illustration. One of skill in the art may recognize modifications of these embodiments, which modifications are meant to be covered by the spirit and scope of the appended claims. For example, in particular, the invention is not confined to the rectangular shape of the folding box, nor to the configuration of the opening in the head flap 12; other geometric forms may be used instead.

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Claims

1. A pack for material to be packed in a film bag, the film bag being contained within a folding box formed from a box blank, wherein the improvement comprises the folding box blank being provided with a first head flap part which is formed with an opening, symmetrical in relation to a crease line, for receiving a pouring and closure system of said bag in the in-use position, one region of the first head flap part being folded about the crease line onto another region of the head flap part in the closed position, and for uncovering the opening at the crease line.

2. A pack as claimed in claim 1, further including a second head flap part provided with a free closure edge for closing the free end of the opening at the crease line of said first head flap in the closed position of the box blank.

3. A pack as claimed in claim 2, further including third and fourth head flap parts on the box blank for providing, in the in-use position, at least a double-walled head region.

4. A pack as claimed, Claim 1, wherein the opening for receiving the pouring and closure system of said bag therein disposed is at a peripheral edge of said folding box to facilitate simple handling.

5. A pack as claimed in Claim 1, further including first and second side wall flaps of said folding box, diagonally opposite said pouring and closure system, said first and second side wall flaps being double-walled in the in-use position.

6. A pack as claimed in Claim 1, further including first and second side wall flaps for forming a double-walled side wall, said flaps being provided with oppositely directed openings lying one above the other in the in-use position, and with crease lines for forming a handle.

7. A pack as claimed in Claim 1, wherein the opening in said first head flap to be folded over is substantially rectangular.

8. A pack as claimed in Claim 2, further including said second head flap corresponding with one side of said pouring opening in the closed position being provided with a projecting profile region which engages in said pouring opening.

9. A pack as claimed in Claim 2, further including the opening for receiving the pouring and closure system of said bag therein disposed at a peripheral edge of said folding box to facilitate simple handling.

10. A pack as claimed in Claim 3, further including the opening for receiving the pouring and closure system of said bag therein disposed at a peripheral edge of said folding box to facilitate simple handling.

11. A pack as claimed in Claim 2, further including first and second said side wall flaps of said folding box, diagonally opposite said pouring and closure system being double-walled in the in-use position.

12. A pack as claimed in Claim 3, further including first and second said side wall flaps of said folding box, diagonally opposite said pouring and closure system being double-walled in the in-use position.

13. A pack as claimed in Claim 4, further including first and second said side wall flaps of said folding box, diagonally opposite said pouring and closure system being double-walled in the in-use position.

14. A pack as claimed in Claim 2, further including first and second side wall flaps for forming a double-walled side wall, said flaps being provided with oppositely directed openings lying one above the other in the in-use position, and with crease lines for forming a handle.

15. A pack as claimed in Claim 3, further including first and second side wall flaps for forming a double-walled side wall, said flaps being provided with oppositely directed openings lying one above the other in the in-use position, and with crease lines for forming a handle.

16. A pack as claimed in Claim 4, further including first and second side wall flaps for forming a double-walled side wall, said flaps being provided with oppositely directed openings lying one above the other in the in-use position, and with crease lines for forming a handle.

17. A pack as claimed in Claim 5, further including first and second side wall flaps for forming a double-walled side wall, said flaps being provided with oppositely directed openings lying one above the other in the in-use position, and with crease lines for forming a handle.

18. A pack as claimed in Claim 2, wherein the opening in said first head flap to be folded over is substantially rectangular.

19. A pack as claimed in Claim 3, wherein the opening in said first head flap to be folded over is substantially rectangular.

20. A pack as claimed in Claim 3, further including said second head flap corresponding with one side of said pouring opening in the closed position being provided with a projecting profile region which engages in said pouring opening.