EP0718209B1 - Foil package - Google Patents

Description

The invention relates to a package with a cut and folded cover made of a flexible film, that on a cuboid body made of a plastic Food with a sticky surface, especially butter or margarine immediately and at least two has adjacent folding surfaces.

Packagings of this type are particularly small packs known for butter and margarine in the prior art. For example, EP-A-0 123 356 shows EP-A-0 216 408 and DE-U-1 914 069 such packaging. The Those skilled in the art are well aware that plastic foods and especially butter and margarine very difficult to are packaging foods. This especially if the packaging should be resealable and at the same time a guarantee closure is required. For packaging is generally known, by a firm glue attached rag to ensure a guarantee closure. After tearing open the guarantee closure is then but such packaging is usually frayed and cannot be closed again satisfactorily.

DE-B-1 030 247 discloses packaging for chocolate bars. The chocolate bars are each covered with a metal foil wrapped, which in turn, by a packaging envelope is enveloped. A folded part of this packaging envelope has an adhesive surface through a perforation is limited. When opening the packaging envelope the adhesive surface is separated along the perforation.

The invention has for its object a generic To create packaging that can be closed again and guaranteed a guarantee closure and still is economically producible. The packaging should especially as small packaging for butter or margarine own.

The task is in accordance with a generic packaging Claim 1 solved.

The packaging according to the invention can be inexpensive and environmentally friendly wrapping materials, for example Oriented polypropylene films after folding spring back, are used. The production is economical, because existing machines are simpler Way can be retrofitted. In addition, only a device for applying the adhesive and a Punching device required. Well-known packaging machines with a folding bike can be used. The packaging performance of such machines is determined by retrofitting is not reduced. It also has an advantage seen that the packaging itself as usual for Open can be unfolded.

Further advantages result from the dependent patent claims, the following description and the drawing.

Fig. 1

schematisch eine Ansicht einer erfindungsgemässen Verpackungsmaschine,

Fig. 2

schematisch eine Teilansicht eines Einschlagmaterialbandes,

Fig. 3a bis 3d

schematisch eine erfindungsgemässe Verpackung und deren Faltung gemäss einer ersten Ausführung,

Fig. 4a bis 4d

schematisch eine erfindungsgemässe Verpackung und deren Faltung gemäss einer weiteren Ausführung,

Fig. 5a bis 5c

schematisch drei weitere Varianten der erfindungsgemässen Verpackung, und

Fig. 6a und 6b

schematisch die Herstellung einer Verpakkung gemäss einer weiteren Variante.

Exemplary embodiments of the invention are explained in more detail below with reference to the drawing. Show it:

Fig. 1

schematically a view of a packaging machine according to the invention,

Fig. 2

schematically a partial view of a wrapping material band,

3a to 3d

schematically a packaging according to the invention and its folding according to a first embodiment,

4a to 4d

schematically a packaging according to the invention and its folding according to a further embodiment,

5a to 5c

schematically three further variants of the packaging according to the invention, and

6a and 6b

schematically the production of a package according to a further variant.

Figure 1 shows a packaging arrangement with a film roll 1, from which a film strip 2, for example oriented polypropylene removable with rollers 7 and a packaging device 10 can be fed. Between the Roll 1 and the pair of rolls 7 is the film strip 2 by one Deflection roller 3 deflected such that between the roller 3 and the pair of rollers 7, the film strip 2 substantially horizontally runs and the inside 2a above and the outside 2b is below. The running direction of the film strip 2 is indicated by arrow 6. Between the pair of rollers 7 and the packaging machine 10, a knife 8 is arranged with which the film strip 2 to form sleeve sections is severable. The packaging device 10 has, for example a known and not shown here Folding bike on. With this, from a forming station 9 molded foods, especially pieces of butter and are packed with sections of the roller belt 2. The subsequent pressing in a device 10a and the ejection and turning are on a discharge belt 20 also well known per se. In Figure 1 is a finished Package 11 shown schematically on the discharge belt 20. As far as the arrangement 25 is known per se.

Between the guide roller 3 and the pair of rollers 7 are over an application device on the inside 2a of the film strip 2 4 and a punching device 5 are arranged. The application device serves on the inside 2a of the film strip two opposite each shown in Figure 2 To form glue points 12. These glue points 12 will preferably by applying a hot melt educated. At a distance from these glue points 12 with the punching device 5 also in pairs 13 introduced into the film strip 2. Define the die cuts 13 Areas 14 of the film strip 2, the dimensions about the glue points 12 are comparable. Such Glue points 12 and die cuts 13 are in a row certain distance applied to the film strip 2. Of the Adhesive is preferably applied hot, for example at 80 ° C to 100 ° C. The glue points 12 and die cuts 13 are comparatively close to an edge 2c of the film strip 2 arranged. This distance D (Fig. 2) is preferably in the range of 2 to 15 mm. Any tailored case comprises at least one glue point 12 and a punch 13. Preferably, each shell has two adhesive points 12 and two punchings 13 on.

Figures 3a to 3d show the folding of a sleeve 15, the has at least one adhesive point 12 and a punching 13. The punch 13, which can be a perforation, is preferably as a curved line with apex 13a or with a tip 13b and leg 13c as an easily tearable weakening point educated. FIG. 3a shows the casing 15 the here with two longitudinal folds 18 and 19 around a butter or Margarine piece 21 is folded. A is on one end the shell 15 still open. The glue point 12 is within this opening. To form a closure on the The end face A becomes the shell 15 according to FIGS. 3b, 3c and 3d folded. Such folding is known per se and takes place in the packaging machine 10, for example by means of a folding bike. As Figure 3c clearly shows first folded two side areas 28 inwards and an inner folding tab 17 by folding in the direction of arrow 22 formed. The glue point 12 is now between two folded areas 29 in an intermediate one gap-shaped space 30. A so formed Outer folding tab 16 with the on the inside 16a attached adhesive point 12 in the in Figure 3d with the Arrow 24 indicated direction folded inwards. The Adhesive point 12 and a tear-off area 14 are thus one on top of the other coordinated that with folded outer folding flaps 16 the adhesive point 12 abuts the tear-off area 14 and on this is liable. As the figure 3d shows, the glue point towers over 12 laterally the semicircular tear-off area 14.

To open the packaging shown in FIG. 3d, the Envelope 15 unfolded on the front side A. This is the exterior Folding tab 16 gripped and gripped at a grip area 31 subtracted from this. Here, the area 14 becomes complete separated from the inner folding tab 17, the punching 13 this makes it easier. In Figure 3d is the tear line that is formed dotted with the reference numeral 32. At the The inner folding flap 17 thus opens the envelope strip-shaped area 33 separated, which is firmly on the outside Folding tab 16 adheres.

The outer folding flap is used to close the packaging 16 brought back into the position shown in Figure 3d. The areas 12a of the area 33 projecting laterally Adhesive point 12 adheres to the outside of the folding tab 17 and contribute to the folding tab 16 in the drawn Hold position. The reclosability of the case 15 is guaranteed. The areas 16, 17 and 18 are also by the sticky surface of the body 21 additionally held. The one shown in FIG. 3d on the front side A. Closure can also in the same version on the opposite end face B may be provided.

After repackaging, the casing 15 is largely in its original state Status. The packaging then makes one very clean impression. Since the area 33 after the first Opening is finally separated from the inner folding tab 17, is nevertheless recognizable at all times that the packaging has been opened. The packaging thus forms a safe one Original closure.

As can be seen in the embodiment according to FIGS. 4a to 4d the front side A compared to that explained above Execution folded differently. So is the inner Folding tab 17 behind the side panels 28. In the packaged However, the condition here is the glue point 12 at the tear-off area 14 pressed and adheres firmly to it. The Opening and closing again is the same as above explained example.

Figures 5a to 5c show different versions the glue point 12 and the tear-off area 14, which here the For the sake of simplicity, use the same reference numerals are. The tear-off area 14 is liable for all versions firmly at the gluing point 12. The punching, weakening line or perforation 13 determined when opening the package in each case the area 14 which is separated from the inner folding tab 17 becomes.

Finally, FIGS. 6a and 6b show an embodiment, in which the glue points 12 on the inside 18a of the Longitudinal fold 18 and the lines of weakness or punchings 13 are arranged on the longitudinal folds 19. To open this packaging, is the outer longitudinal fold 18 of the inner longitudinal fold 19 deducted, the areas 14 being separated and stick to the glue points 12. A reclosing is also easily possible here, as with the reclosed Cover 15 lateral areas 12a of the glue point 12 stick to the inner folding tab 19, like the figure 6b makes it clear. With this packaging, the End faces A and B each have a closure be.

Claims (10)

1. Package having a cut-to-size and folded wrapper (15) made of a flexible film, which bears directly against a cuboidal body (21) made of a plastic foodstuff with a tacky surface, in particular butter or margarine, and has at least two folding-areas (16, 17) lying against each other, characterized in that a first folding area (16) is provided with an adhesive location (12) and a second folding area (17) is provided with a region (14) of the wrapper (15) to be torn off during opening of the package, in that the adhesive location (12) is adhesively bonded to the region (14) to be detached and adheres in such a way that, when the wrapper (15) is unfolded, the said region (14) is torn off completely and is held on the adhesive location (12), and in that the adhesive location (12) projects beyond the region (14) to be detached of the second folding area (17) and, outside the latter, releasably adheres to the second folding area (17).
2. Package according to Claim 1, characterized in that the adhesive location (12) is formed by a hot-melt adhesive applied to the inside of the first folding area (16).
3. Package according to Claim 1 or 2, characterized in that the region (14) to be detached is determined by a line of weakness (13).
4. Package according to one of Claims 1 to 3, characterized in that the line of weakness (13) has a vertex (13a, 13b) which is further away from the edge (2c) of the film than its sides (13c).
5. Package according to Claim 3, characterized in that the line of weakness (13) is a perforation with incisions and tear-open links.
6. Package according to one of Claims 1 to 4, characterized in that the first folding area (16) is arranged on an end face (A, B) of the package.
7. Package according to Claim 5, characterized in that the adhesive location (12) is arranged approximately centrally on the inner side of a folding flap.
8. Package according to one of Claims 1 to 6, characterized in that the adhesive location (12) is arranged on a gripping part (31) of the wrapper (15) at a distance of preferably 2 to 15 mm from one edge (2c).
9. Method of producing a package according to Claim 1, a flexible film (2) being drawn off a roller (1) and fed to a folding device (10) in order to receive plastic foodstuffs, characterized in that, between the roller (1) and the folding device (10), in an arrangement in series extending in the longitudinal direction of the film (2), the film (2) is provided in each case with adhesive and, at a distance from the latter, with a line of weakness, in that sections of the film (2) having at least one adhesive location (12) and a line of weakness (13) are respectively detached from the film (2) and are in each case brought together with a moulded body (21) and folded.
10. Packaging arrangement for carrying out the method according to Claim 9, characterized in that between a supply roller (1) and a folding device (10) there are arranged an adhesive-application device (4) and a punching device (5), with which adhesive locations (12) and lines of weakness (13) can be applied at predetermined intervals to an inner side (2a) of a strip of film (2).

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