DE9006537U1 - Soft packaging made of plastic film to hold a stack of paper tissues - Google Patents

Description

DIPL.-ING. P.-C. SROKA. DR. H. FEDER," DIPU-PHYS. DR. W." D. FEDER PATENT ATTORNEYS & EUROPEAN PATENT ATTORNEYS DOMINIKANERSTR. 37. P.O. BOX IIIO38

D-4OOO DÜSSELDORF Tel. (0211) 5,534 O2

TELEX

FAX (&Ogr;21I) Ö7 03 16

£7. JP1990 vrräi Akte 90-20-^0

Company HSBEHA Maschir.i-nf-·— ^{: u} Hermann H. Ratha GabH & Co. KG, 4000 DOsaeloorf

Soft packaging made of plastic film to hold a stack of paper tissues.

The innovation relates to a soft pack made of plastic film for holding a stack of paper handkerchiefs with an essentially cuboid shape forming a front wall, a back wall, two side walls and two end walls, whereby the end walls are each made up of a first end flap folded over from the front wall, a second end flap folded over from the back wall and a third and fourth end flap folded over from the end walls and with a closure flap for covering a removal opening and an adhesive strip which is connected on the one hand to the closure flap and on the other hand releasably to the back wall or the front wall.

A soft pack of this type is described, for example, in FR-A- 2 334 584. In this well-known soft pack, the removal opening is located in the area

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extends over the f^.i flap of the side wall. Before the first opening, the closure flap is fixed to the pack via perforations that extend along the end wall edges, which are enclosed by the third and fourth end flaps unfolded from the side walls.

Such soft packaging has proven to be expensive in terms of material and production, since special measures must be taken to maintain sufficient dimensional stability after opening and to keep the closure flap in the closed position before use.

Another known soft pack (DE-C-

2 949 496) the removal opening is located on the top of the pack, on which a sealing flap is provided by perforation lines running from the corners of the front wall essentially to the longitudinal central axis and a separating cut extending between the ends of the perforation lines, which is partially severed when the pack is opened for the first time, so that paper tissues can be pulled out through the removal opening opening in the front wall. After the first opening, the sealing flap can be reconnected to the front wall using an adhesive strip. This known soft pack has the disadvantage that uncovered perforation lines must be provided in the front, which under certain circumstances creates the risk of the pack tearing open prematurely. Furthermore, the pack can no longer be completely closed after the first opening, unless the adhesive strip extends over the entire width of the sealing flap.

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To solve the problem of designing a soft pack of the type described at the beginning in such a way that it is easy and inexpensive to manufacture and has optimal conditions with regard to opening, removing paper tissues and resealing, the older GM 90 03 110.5 proposes that the first or second end flap itself serves as the closing flap, with a perforation line running along the end wall edge surrounded by the end flap serving as the closing flap being arranged in the transition area between this end flap and the third and fourth end flaps, and the end flap serving as the closing flap being folded over the other end flaps welded together on the outside of the end wall and being connected to the outside of the opposite rear wall or front wall of the pack by means of the adhesive strip.

The basic idea behind this solution is to provide the removal opening neither on one of the side walls, i.e. the longer narrow side of the pack, nor within the area of the front or rear wall, but in the area of the longer of the two front turning edges, wöbe. ⁴ then as a closing flap the already existing folded from the front wall or rear wall to the front wall

frontal lobe.

The aim of this innovation is to further improve the previous proposal so that the paper handkerchiefs can be removed even more conveniently.

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According to the innovation, this is done by the perforation line running along the end wall edge folded over by the closure flap continuing in a connecting perforation line which is separated by the end wall edge and one of the longitudinal

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Front wall or rear wall in a given

Direction extending over a predetermined fraction of the pack length, the directions and lengths of the two connecting perforation lines being such that a bridge of unperforated plastic film extends between their end points in the transverse direction of the pack.

The two connecting perforations can preferably extend in a direction parallel to the longitudinal direction of the pack. However, it is also possible for the connecting perforation lines to extend in a direction that forms an acute angle with the end wall edge and runs towards the longitudinal center plane of the pack, with the length of the connecting perforation lines being selected so that the product of the cosine of this acute angle and the length of the connecting perforation line is less than half the length of the end wall edge. This ensures that there is a gap between the two end points of the connecting perforation.

3G tion lines in the transverse direction the bridge of unperforated plastic film forming the fastening section of the closure flap to the pack is present.

It has also proven to be very advantageous if the paper handkerchiefs in the stack within the soft packaging are folded in such a way that they are each folded once in the transverse direction of the packaging, with this transverse fold being arranged on the side of the closure flap.

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The innovation means that the opening for removing the paper handkerchiefs extends slightly beyond the edge of the front wall into the area of the front wall or the rear wall, which makes it easier to remove the paper handkerchiefs. The dimensions of this additional part of the opening, determined by the length of the two connecting perforation lines, can be a small fraction of the length of the pack, so that the paper handkerchiefs remaining in the pack continue to be well protected, since the slits left by the connecting perforation lines after the pack is opened for the first time can be kept very short.

In the following, an example of a soft pack according to the innovation is explained in more detail using the attached drawing.

The drawings show:

Fig. 1 a soft pack made of plastic film for holding a step of paper handkerchiefs

schematic in perspective view;

Fig. 2 is a view of the package according to Fig. 1 on the

front wall provided with the closure flap when the closure flap is folded up;

Fig. 3 shows a partial unfolding of a blank made of plastic film for producing a package according to Fig. 1.

Fig. 1 shows a substantially cuboid-shaped soft pack for holding a stack of paper tissues in the closed state. The pack has

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a front wall 1, a rear wall 2, two side walls 3 and 4 and two end walls 5 and 6. The pack is closed at the end walls in the usual way by folding over end wall flaps. For example, the end wall 5 is formed by a first end flap 5.1 folded over from the front wall 1, a second end flap 5.2 folded over from the rear wall 2 and two end flaps 5.3 and 5.4 folded over from the two side walls 3 and 4.

The first front flap 5.1 serves as a closure flap. It has an adhesive strip 10, via which it is detachably connected to the rear wall 2. To create a removal opening in the form of a removal slot running along the upper, longer front wall edge 1.1 in Fig. 1, two perforation lines 7.1 and 7.2 are provided, which are located in the transition area between the first front flap 5.1 and the third and fourth front flaps 5.3 and 5.4, respectively, and in the folded state of the pack extend over part of the pack width along the upper front wall edge 1.1 encompassed by the first front flap. The position of the perforation lines 7.1 and 7.2 on the blank can be seen in Fig. 3.

Furthermore, connecting perforation lines 7.1 and 7.2 3Q are provided. These connecting perforation lines 7.3 and 7.4 each run from the corner formed by the front wall edge 1.1 and one of the edges 1.2 and 1.3 running in the longitudinal direction of the pack on the front wall 1 at a predetermined acute angle o towards the longitudinal center axis of the pack. The length 1 of the two connecting perforation lines 7.3 and 7.4 and the angle cC are so

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dimensioned so that a bridge 7.5 made of unperforated plastic film extends between the two end points of the connecting perforation lines 7.3 and 7.4 in the transverse direction of the package. The closure flap 5.1 is connected to the package via this bridge 7.5. In order to create such a bridge, the length 1 of the connecting perforation lines and the acute angle ω must be selected so that, if L is the length of the front wall edge 1.1, the following condition is met:

1 x cosoe

L/2

The sizes indicated above are expediently selected so that the bridge extends over a significant proportion of the pack width, for example approximately 75% of the pack width, so that, as explained below, the additional portion of the removal opening created by the connecting piarforation lines 7.3 and 7.4 has a width that is sufficient to be able to pull the paper tissues comfortably out of the pack.

Of course, it is also possible to arrange the connecting perforation lines 7.3 and 7.4 so that they run along the longitudinal edges 1.2 and 1.3, i.e. parallel to the longitudinal direction of the pack. In this case, the length of the

Bridge 7.5 of the pack width.

As can be seen from Fig. 2, when the pack is opened for the first time, after loosening the adhesive strip 10 and folding up the first front flap 5.1, which serves as a sealing flap, and tearing open the two perforation lines 7.1 and 7.2 as well as the connecting perforation lines 7.3 and 7.4, a removal opening in the form of

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a widened slot through which the first slit can be pulled outwards in the longitudinal direction from the stack of paper handkerchiefs 9 arranged inside the pack. The end wall remains stable _in that the second end flap 5.2 is welded to the third and fourth end flaps 5.3 and 5.4 at the tops 8.1 and 8.2.

After the perforation lines 7.1 and 7.2 and the connecting perforation lines 7.3 and 7.4 have been opened and torn open for the first time, the pack can be closed again by folding down the first front flap 5.1, whereby the adhesive strip 10 is detachably connected to the rear wall 2. When closed again, the perforation lines 7.1 and 7.2 are completely covered by the first front flap 5.1 and are therefore not on the outer surface of the pack. Only the relatively short connecting perforation lines 7.3 and 7.4 are visible on the front 1.

As can be seen from Fig. 3, the production of the pack requires relatively short perforation lines 7.1 and 7.2 and connecting perforation lines 7.3 and 7.4. The fold lines are indicated in Fig. 3 by dash-dot lines.

Claims (3)

90-20-50 - 9 - Protection claims 5 1. Soft pack made of plastic film for holding a stack of paper handkerchiefs with a rectangular cuboid structure forming a front wall, a rear wall, two side walls and two end walls, whereby the end walls are each constructed from a first front flap folded over from the front wall, a second front flap folded over from the rear wall and a third and fourth flap each diverted from the sides to the right and with a closure perimetre for covering a removal opening and an adhesive strip which is firstly connected to the closure flap and secondly detachably connected to the rear wall or the front wall. d and in which the first or second end flap itself serves as the closure flap, wherein in the transition area between this end flap and the third and fourth end flaps there is a perforation line running along the end wall edge folded over by the end flap serving as the closure flap, and the end flap serving as the closure flap is folded over the other end flaps on the outside of the end wall over the welded together end flaps and is connected by means of the adhesive strip to the outside of the opposite rear wall or front wall of the pack, characterized in that the perforation line (7.1, 7.2) running along the end wall edge (1.1) folded over by the closure flap (5.1) continues in a connecting perforation line (7.3, 7.4) which extends from the end wall edge (1.1) through this end wall edge (1.1) and one of the edges (1. 2, 1.3) formed corner on the front wall (1) or the rear wall running in a predetermined direction over a &igr;&igr; · < . 90-20-50 - 10 - 10 3. 20 25 30 a predetermined fraction of the package length, 6/where the directions and lengths of the two connecting perforation lines (7.3, 7.4) are such that a bridge (7.5) made of unperforated plastic film extends between their end points in the direction of the package Soft packaging according to claim 1, characterized in that the inner perforation lines extend in a direction parallel to the longitudinal direction of the packaging. Soft packaging according to claim 1, characterized in that the connecting perforation lines (7.3, 7.4) extend in a direction which, enclosing an acute angle (θ) with the end wall edge (1.1), runs towards the longitudinal center axis of the packaging and the length (1) of the connecting perforation lines (7.3, 7.4) is selected such that the product of the cosine of the acute angle (θ) and the length (1) of the connecting perforation lines is less than half the length (L) of the end wall edge (1.1). Soft packaging according to one of claims 1 to 3, characterized in that the paper handkerchiefs of the stack received by the soft packaging are folded in such a way that they are each folded once in the transverse direction of the packaging, with this transverse fold being arranged on the side of the closure flap (5.1).