EP0889837A1

EP0889837A1 - Packaging with a top and/or bottom surface obtainable by folding

Info

Publication number: EP0889837A1
Application number: EP97920553A
Authority: EP
Inventors: Maria Blömer
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-03-27
Filing date: 1997-03-27
Publication date: 1999-01-13
Also published as: WO1997035783A1; DE19612102A1; DE19612102C2

Abstract

The invention relates to packaging having a top and/or bottom surface obtainable by folding and comprising a front and a rear end section and two side face sections (3, 3') connected thereto by connecting edges (4, 4'). Said packaging may, in particular be a gusset bag (1). According to the invention, the end regions of the front and rear wall (2, 12) of the packaging are provided with a recess (7, 7') or a slot (51). In its final folded stage, said packaging therefore has overlapping end regions of the side surface sections (3, 3'), and together they form the top or bottom surface of the packaging. When closed, the packaging has a five-layered central region instead of a single-layered region as in known gusset-bag packaging in which side face sections form only part of the top or bottom surface.

Description

Packaging with a top and / or bottom surface that can be created by folding

The invention initially relates to a packaging with a head and / or bottom surface that can be produced by folding, comprising a front and a rear end surface section and two side flat sections connected thereto via connecting edges. The packaging can in particular be a side gusset bag.

The invention relates to a piece of packaging for producing such packaging. In particular, the invention relates to a piece of packaging for a side trap bag, but it can also be used for other types of packaging

Finally, the invention also relates to the use of the packaging blank for folding a packaging with a top and / or bottom surface.

In modern industrial companies, there is an extremely great need for easy-to-machine, inexpensive and yet very stable packaging for daily needs. Semi-flexible cardboards, plastic films or modern film composites are particularly suitable as materials for such packaging. As a rule, the packaging should be suitable for then transporting, storing and offering the consumer goods. Packaging with a folded top and / or bottom surface is particularly suitable for this, and is therefore found as a mass article everywhere where consumer goods are Your further development towards cheaper and / or more stable packaging is constantly being offered or manufactured. From the point of view of marketing, it is always taken into account that the consumer is affected by a Packaging should be tightened and can be permanently bonded to the packaged product due to the special comfort of the packaging (simple portability, easy opening, easy reclosing).

In this sense, it was a primary object of the invention to provide a generic packaging which, on the one hand, has particular stability in the area of its head and / or bottom surface and, on the other hand, can be produced particularly well from a single material web. At the same time, it should be created Packaging an aesthetically and functionally appealing design. The packaging should in particular - especially as far as the formation of its head area is concerned - be designed so that it is easily transportable and evident as a single piece by the consumer and should preferably be resealable

Linked to this was the task of creating a corresponding piece of packaging raw material - certain wet intermediate product in the manufacture of the packaging - which allows the packaging to be easily finished according to a simple folding scheme and is itself easy to produce from the material web.

According to the invention, the first part of the task is solved by a generic packaging in which end regions of the side surface sections can be folded inwards along a respective transverse folding line to form the head and / or bottom surface, the length of the end regions being greater than half the width of the end face sections, and the ends of the end face sections assigned to the head and / or bottom surface have a relief slot or a relief recess. The term "end region" is used here and below - for the regions of the side and / or end face sections which can be folded to form the top or bottom surface. The packaging according to the invention allows the top and / or bottom surface to be formed entirely from the set surface end regions; the geometry of the top and / or bottom surface is not important, it can be square, for example, the advantages of the packaging according to the invention However, ng come into play particularly in the case of elongated rectangular head and / or bottom surfaces. The packaging according to the invention can be produced particularly easily from a generic blank piece of packaging in which, according to the invention, the two side surface sections and the two end surface sections have at least m approximately the same shape, the side surface sections m approximately the same height and the same or less As with the flat surface sections, each of the flat sections at a distance from an end edge of the raw piece that is greater than half the width of the end surface sections has a fold line running transversely to the connecting edges, further fold lines are provided on each of the end surface sections rvvei the points of contact of the transverse fold lines with the connecting edges run at an angle of approximately 45 ° with respect to their respective starting connecting edge in the direction of the associated end edge, in each case a relief slot or a relief recess is provided which runs from the respective end edge in the direction of the transverse fold line

These details and features are explained in more detail below with reference to the figures

Side pocket bags of the generic type are already known. However, the top or bottom surface of these bags is usually formed from the end face sections of the underlying prey piece, ie from those flat sections of the raw piece that offer the wider face in the finished bag In this case, the (narrower) side surfaces of the bag are often partially folded in under the top or bottom surface

Occasionally, generic gusset booties are also found in practice! encountered, in which end regions of the side surface sections are folded inwards at right angles along a respective transverse fold line to form a bottom surface. In this rare case, the end regions of the side surface sections of the bag raw piece are finished in a separate manner to complete the bag. the closing folding fold is folded onto end areas of the end face sections which have previously been folded inwards, and the resulting base area is therefore partially formed from the side area sections of the underlying bag raw pieces. However, the bags of this type are not sufficiently stable for all purposes of use, since the length of the last folded Due to the structure, side surface end areas always make up only half the width of the side surface sections and therefore there is always a single-layer area made of material which only makes little contribution to the stability of the bag in the middle of the bottom surface - between the folded side surface end areas. The width of this single-layer middle area depends on the dimensions of the end of the bag. If the end faces are much wider than the side faces, the single-layer middle area is also very wide and accordingly unstable n, and in view of this situation, it could no longer be expected that packaging that could be folded according to a similar folder, like the bags discussed last, could offer any advantages. It was not at all foreseeable that a folding diagram would be transferred to the head area packaging could be useful

However, the invention is based precisely on the extremely surprising finding that, in the case of conventional generic side-gusset bags with essentially rectangular end-face sections, a simple enlargement of the end-face end areas and the last to be folded is achieved by simply making a slot or a recess in the end face sections so that the bag head and / or bottom surface can be stabilized without significant resistance occurring during the folding process. However, an effective enlargement of the side surface end areas is not possible without the slot or the recess being tightened. The side surface end areas are then continuously connected to one another via the end face sections, and the end face material stands for a final folding of the (tentatively) enlarged side areas - End areas in the way

The packaging according to the invention, which is preferably a gusseted bag, has overlapping end regions in the folding state of the side surface sections, and these thus jointly form the top or bottom surface of the packaging. The final folding state of the packaging according to the invention is in comparison with the known side gusset bags. in which the top or bottom surface is only partially formed by side surface sections, instead of a single-layer central region, there are five days, and the gain in stability achieved thereby is enormous. In the case of the packaging raw piece which is normally the basis of the packaging according to the invention, the distance of each of the transverse folding lines from their corresponding end edge - this distance corresponds to the length of the side surface end regions to be folded inwards - is greater than half the width of the end faces

In summary, two features are of paramount importance for the invention

a) enlarged end areas of the side surfaces and b) a slot or a recess in the end faces,

whereby the slit or the recess enables the side surface end regions to be folded essentially without resistance onto the previously inwardly folded end surface regions. Incidentally, "enlarged" in this context means that the end regions of the side surfaces have a length which is greater than half Width of the end faces

If the overlapping side surface end areas of the bag (packaging) are connected to one another in a detachable or inseparable manner, a grip or carrying recess automatically results below the head or bottom surface formed in this way, which can serve the consumer or the transport staff well

The overlapping side surface end areas of the raw bag can easily be provided with descriptive or advertising texts and / or motifs while achieving particularly uniform views Further preferred embodiments of the invention can be found in the claims. The invention is described in more detail below on the basis of advantageous exemplary embodiments, with reference to the figures. They represent:

Fig. L top view of the end face of the flat blank of a gusseted bag with recesses at its upper and lower ends.

FIG. 2 A highly schematic cross section, enlarged in comparison with FIG. 1, through the upper narrow side of the bag blank from FIG. 1, along the line A-A and with a view downward.

Fig. 3-7 Perspective views of a gusseted bag in different

Bemitzungsziiständen, level surface each formed with a f from overlapping ^'altenflä- chen.

8 shows a schematic plan view of the top or bottom surface of a bag according to the invention.

Fig. 9 Schematic view of the top or bottom area of the Rohsriicks belonging to the bag from Fig. 8.

1-7, the invention is described with the aid of a preferably configured side gusseted bag. Side trap bags are particularly suitable for realizing the invention.

The largely flat blank of a gusset bag 1 shown in FIGS. 1 and 2 comprises a front end surface section 2, a rear end surface section 12 (see FIG. 2) and two side fold surface sections 3, 3 ^' inserted between the end surface sections. These are connected to the front end face section 2 via lateral front sealing webs 4, 4 ^' and to the rear end face section 12 via analog rear sealing webs 14, 14 ^' , which are hidden in FIG. 1. Instead of sealing bars, any other type of edge connection can of course also be selected, but sealing bars increase the stability of a finished bag considerably. Instead of sections of the face or folds, the abbreviations of faces or folds are also used below The fold surfaces 3, 3 are inserted from their respective lateral sealing webs 4, 14 or 4, 14 'to the fold edges 5 or 5 ^' shown in dashed lines in FIG. 1 between the end surfaces 2 and 12, they therefore each have a front and a rear leg portion Der Flat bag 1 (raw piece) is formed in the lateral areas between the sealing webs and the associated fold edges 5 or 5 ^' every four days (two stim plus plus two side layers) and in the area 6 between these fold edges in two layers

According to FIG. 1, the upper and the symmetrically designed lower end edge of the flat bag 1 extend horizontally from the lateral sealing webs to the fold edges 5, 5 ^' , but have a centrally arranged, punched recess 7 or 7 in the two-layer region 6 with an essentially rectangular plan The upper recess 7 has, at a short distance from the fold edges 5.5, side seals 8, 8 and a lower horizontal seal 9, the lower recess 7 has corresponding seals. The seals 8, 8 ^' , 9 connect the end faces 2, 2 of the bag which are directly adjacent to one another. As a rule, some or all of the seals 8, 8 ', 9 are only applied after a bag has been erected and / or filled. The horizontal ends (end edges) of the bag can be to the right and left of the recesses thereby, as already shown in FIG. 1, seals can also be made on the seals can also be completely dispensed with, like the sealing webs, but they also considerably increase the stability of a finished bag and, moreover, contribute to easy folding

The height of the recesses 7 and 7 (in the area of the seals 8, 8 ') is somewhat narrower than their width (in the area of the seal 9). The arrangement, width and height of the recesses can vary from the configuration shown in FIG. 1, However, for reasons of high bag stability and simple foldability, it is preferred that the recess does not extend to the four-layer region. Further essential aspects in the design of bags according to the invention are explained in more detail below with reference to FIGS. 8 and 9 Dotted lines 19, 19 ^'are shown in FIG. 1; they correspond to horizontal fold lines which run transversely to the sealing webs and whose vertical spacing from one another indicates approximately the height of a rectangularly folded pouch (see further below). The recesses 7, 7 'are at a distance from their associated fold lines 19 and 19' which is slightly larger than the width of one leg of the inwardly folded fold surfaces 3, 3 '. In addition, diagonal fold lines are also indicated by dotted lines 10, which have their starting point at the connection points of the fold lines 19, 19 'with the sealing webs 4, 4 ^' , 14, 14 ^' and enclose an angle of approximately 45 ° with these webs . They each extend up to a corner of the recesses 7, 7 ^' . Two diagonal fold lines 10 and one horizontal fold line 19 together with the seal 9 define a trapezoidal area 22. The diagonal fold lines 10 simultaneously delimit corner areas 11 of the bag which, when it is erected in the state of use, around the fold lines 10 wing-like in the direction of the adjoining trapezoidal areas 22 are folded (for this purpose, refer to FIGS. 3-7).

FIGS. 3 to 7 show a gusseted bag which essentially corresponds to the blank shown in FIGS. 1 and 2, in different states of use; the reference symbols introduced so far will be used in a corresponding manner.

The bag 1 shown in FIGS. 3 to 7 has an insignificantly cuboid lower end. The flat standing surface 20 (see FIG. 3) of the bag 1 belonging to this lower end is formed by overlapping lower sections of the bag fold surfaces 3, 3 ^' folded towards one another in the corner regions. The folding section for producing such a standing or floor surface corresponds to the steps for producing a top surface of the bag, which are explained with reference to FIGS. 3 to 7.

3 shows the bag I in a typical state of use, in which in the upper end area (bag head area) the respective leg parts of the side fold surfaces 3 and 3 'of the bag lie flat against one another and the adjacent end faces. Chen concerns. This flat contact is lost towards the standing surface of the bag. From the head region to the standing surface of the bag 1, the respective leg pairs of the fold surfaces 3 and 3 ^' enclose increasingly larger angles, the fold edges 5 and 5', which are adjacent in the head region to are located in the center of the recess 7, strive outwards from the center of the bag, and consequently the interior of the bag widens continuously downwards.

FIG. 4 shows the state that results when the lateral end surface parts or the associated fold surface legs of the bag head region (after any seals have been released) are moved apart from the system state shown in FIG. 3. Approximately V-shaped openings are formed on both sides of the recess 7, the fold edges 5. 5 ^′ in the head region are pushed outwards from the center of the bag

Starting from the state shown in FIG. 4, the pleated surfaces 3 and 3 ^' can be pulled out with the formation of a rubble opening which is roughly delimited at the upper end. 5 shows, by way of example, a bag 1 with the left pleat surface 3 ^{'turned out} . The seal 8 ^'of the recess 7 delimits the pour opening 30 towards the center of the bag. A clearly defined pouring channel is thus formed which, if necessary, enables the bag 1 to be emptied in a targeted manner

A further subsequent state to the state of FIG. 4 is shown in FIG. 6. The right recess seal 8 is only partially visible, the lower and the left seal 9 and 8 ^' are indicated by dotted lines. The front horizontal fold line 19 and part of the corresponding rear fold line are visible, as is a diagonal fold line 10 (front right), other fold lines are also indicated. FIG. 6 shows the state after a further unfolding of the front surface and fold surface thigh parts in the head area. The lateral fold surfaces 3, 3 ^' (as well as their associated sealing webs; still run approximately vertically in the base region of the bag; at the level of the fold line 19, however, the end regions of the fold surfaces are bent sharply inwards and are approximately rectilinear extending end edges 35, 35 ^' The upper corner regions 11 (cf. FIG. 1) of the end faces run from the recess 7 in an inclined position to the associated connecting edges

In order to produce a cuboid-shaped bag, one of the two end regions of the fold surfaces 3, 3 'is optionally turned from the configuration shown in FIG. 6 without the respective opposite sealing seal 8 or 8 ^' towards the opposite fold surface 3 or 3 'inwards and folded down. This both optional and non-contact folding is unproblematic due to the design of the recess 7, which is adapted to the position of the transverse folding lines 19, cf. the explanations for FIGS. 8 and 9

The folding down of the end region of a first fold surface is inseparably connected to a corresponding folding of the end surface corner regions and the associated sealing 8 or 8 ^' and ultimately leads to the fact that this folded sealing comes into contact with the lower sealing 9 of the recess 7 . The remaining end area of the second fold area 3 or 3 ^' (with the associated end face corner areas) can then be folded down onto the fold area end area which is initially moved down, the associated second seal 8 ^' or 8 coming into contact with it from above. It is particularly important to ascertain that ultimately both folded-down fold area end regions protrude beyond the center of the bag and therefore there is an overlap of the fold surface ends, the overlap zone being essentially rectangular.

In Fig. 7 the result of the folding process is shown, an essentially cuboid bag. The height of the bag 1 (FIG. 7) corresponds approximately to the vertical distance between the fold lines 19 of an end face, which can best be seen from the analog FIG. 1. The overlap of the folded-down end regions of the fold areas 3 and 3 ^' can be clearly seen in the head region of the bag (in FIG. 7 the fold area 3 ^{' is at the} top, but it could also be the other way round). The width of the overlap results from the distance between the upper fold line 19 and the upper (horizontal) end edge of the bag blank. To fix the overlap and / or the flat end face of the bag, seals, adhesives or the like (not shown in FIG. 7) can be provided. A stable recess under the top of the bag is then obtained

The corner regions 11 of the front end face (see FIG. 1) lie on the trapezoidal region 22 when the cuboidal bag is finished. that runs from the front fold line 19 at right angles with the front side of the bag to the rear (towards an analog rear trapezoidal area). This is not shown in the drawing in FIG. 7, but is already clear from FIG. 6. The following figures are used for further clarification

8 and 9, the essential properties and configuration options of a preferred packaging stucco according to the invention or a preferred packaging according to the invention are summarized below, without the folding process being discussed in more detail

FIG. 8 shows the top or bottom surface of a packaging according to the invention, FIG. 9 shows the associated piece of raw material. It is again a gusseted bag, but the following versions can easily be transferred to other packaging types. Small Latin letters indicate relevant dimensions and the Greek letter α denotes a relevant angle. The remaining reference numerals (Arabic numerals) are used as far as possible according to their previous meaning

The top or bottom surface shown in FIG. 8 is rectangular. The edge shown below corresponds to the fold line 19 (see FIG. 9), the width b of the top or bottom surface corresponds to the width of the raw stucco end surface 2. or bottom surface corresponds to the width of the side fold surfaces 3 or 3 ^' (side surfaces) inserted up to the broken line 5 or 5

An end region of the left pleat surface of the raw piece, which has a length f according to FIG. 9, forms a significant part of the headers shown in FIG. or floor space. It overlaps with the correspondingly dimensioned end region of the right fold surface of the blank; this end area is partially below the left fold surface end area, so it was folded first. The width of the overlap is given in the case of a flat top or bottom surface from the calculation rule:

2 x f - b = width of the overlap Deviations from this can result primarily from the elasticity of the packaging material and the inaccuracy of the folding processes. However, a deliberate deviation from a flat top or bottom surface may also be desired and lead to a correspondingly reduced overlap

9, fold lines 10 shown in dash-dot lines run at an angle of 45 ° to the lateral connecting edges 24, 24 ^' . Their starting point is the point of contact of one of the connecting edges with the folding line 19, their end point is where they meet the folding edges 5 and 5, respectively. The fold lines 10 can be found in the wrong state of FIG. 8. They run below the inwardly folded end regions of the fold surfaces and, in the schematic representation, simultaneously delimit two triangular zones above them, of the top or bottom surface shown. These triangular zones of the top or bottom surface are single-layer in the exemplary embodiment (1 fold surface layer). The zones adjoining it towards the center are initially at least three days long (from bottom to top: layer / layer / fold surface) and in the area of the central overlap even at least five days (layer / layer / right fold surface / stim - / hnke fold surface position).

A dotted line 61 is also shown in FIG. 9, which runs horizontally between the end points of the folding lines 10 and has a distance 1/2 t to the folding line 19 running parallel to it. The line 61, the folding line 19 and the diagonally running folding lines 10 together delimit a trapezoidal area which corresponds to the area 22 of FIGS. 1 to 7. This area and the corresponding area of the rear end face can also be seen in FIG. 8, it is the lowest (face) position of the at least three or five days 2, ones. Line 61 is accordingly a center line of that shown in FIG Bag head or bottom surface

The word "at least" in connection with the number of layers present indicates that additional, folded bag material can be forced between the three or five layers indicated. This depends on the design and arrangement of the relief slot or the relief exception There are a multitude of possibilities for this. FIG. 9 shows, for example, a relief shoe 51, which extends essentially vertically downward from the upper end edges of the end faces of the raw piece. It is at a distance from the right connecting edge 24, which is somewhat larger than the dimension f, and it ends at a short distance from the (medium) line 61. In this way, it is ensured, on the one hand, that the slot does not form after the bag is finished protrudes into the lowermost (end face) position of the at least three-day region of the bag head or bottom surface and thereby weakens it. On the other hand, this enables the right end of the fold surface to be completely folded down

Instead of the relief slot 51, however, a relief is preferred in some cases. And this in turn is preferably rectangular, arranged in the center and dimensioned so generously that it almost completely forms the rectangular area of the raw piece, which is to the right and left of the fold edges 5 and 5 and below by line 61 (the center line of the folded bag, FIG. 8) is bordered. A bag with an end section designed in this way is particularly easily foldable and very stable. In addition, when the bag is finished, only a small amount of additional material becomes from the raw piece forced between the three or five layers given above, which in particular can adversely affect the "indentation property" of the bag. As already noted with regard to FIGS. 1-7, sealing of a relief recess designed in this way further stabilizes and facilitates folding achieve

In conclusion, it should be noted that by a suitable arrangement of seals along the end edges and / or fold lines 10 secondary can form seals along the fold lines 10 can also facilitate the folding process.

Claims

Expectations

1. Packaging with a head and / or bottom surface that can be produced by folding, comprising a front and a rear end surface section (2, 12) and two side surface sections (3, 3) connected thereto via connecting edges (4, 4 ^' , 14, 14) ), whereby end regions of the side surface sections (3, 3 ^' ) can be folded inwards to form the head and / or bottom surface along a respective transverse fold line, the length (f) of the end regions being greater than half the width (b) of the end surface sections (2 , 12), and the ends of the end face sections (2, 12) assigned to the head and / or bottom surface have a relief shield (51) or a relief recess (7, 7 ').

2. Packaging according to Anspmch 1, characterized in that it is a

Side gusset bag (I) is.

3 Packaging according to one of the preceding claims, characterized gekenn¬ characterized in that below the head and / or bottom surface eme recessed grip can be formed

4 Packaging according to one of the preceding claims, characterized gekenn¬ characterized in that the end regions of the side surface sections (3,3) are interconnected.

5. Packaging according to one of the preceding claims, characterized gekenn¬ characterized in that the relief sheath (51) or the relief recess (7) and / - or a fold line (10) are sealed

6 Packaging according to one of the preceding claims, characterized gekenn¬ characterized in that a re-resealable pouring opening (30) is provided 7 raw packaging piece for the production of a packaging with a head and / or bottom surface that can be produced by folding, comprising a front and a rear end surface section and two side surface sections connected thereto via connecting edges, the two side surface sections (3, 3) and the two end surface sections (2, 12) have at least approximately the same shape in pairs, the side surface sections (3, 3 ') have approximately the same height and the same or narrower board as the surface area section (2, 12). each of the flat sections (2, 12, 3, 3 ^' ) at a distance from an end edge of the blank which is greater than half the width b of the end face sections, a transverse to the connecting edges (4, 4 ^' , 14, 14 or 24, 24 ^' ) extending folding line (19), two further folding lines (10) are provided on each of the end face sections (2, 12), which from the points of contact of the transverse folding lines (19) with the connecting edges (4, 4, 14, 14 ^' or 24, 24) run at an angle of approximately 45 ° with respect to their respective output connecting edge in the direction of the associated end edge, in each of the end face sections (2, 12) a relief shield (51) or a relief recess (7) is provided which runs from the respective end edge in the direction of the transverse fold line (19)

8 packaging raw piece according to Anspmch 7, characterized in that the relief shield (51) or the relief recess (7) ends at a distance from the respective transverse fold line (19) which corresponds to approximately half the width t of the side surface sections or is slightly larger as this

9 packaging raw piece according to one of the address 7-8, characterized in that in the end face sections a courageously arranged relief recess or two relief shoes are provided which consistently have a distance from the adjacent connecting edges which is larger than half the width t of the side surface sections 10. Use of a packaging blank according to one of claims 7-9 for producing a packaging with a top and / or bottom surface.