DE19938563A1 - Packaging for wrapping block-shaped bodies, in particular cube-shaped or cuboid products, such as butter, margarine, soup paste, yeast or the like, and method and device for wrapping the block-shaped bodies using such a packaging - Google Patents

Abstract

The invention relates to a packaging and a method and an apparatus for wrapping block-shaped bodies, in particular cube-shaped or cuboid products, such as butter, margarine, soup paste, yeast or the like, with shell-forming elements for easy creation and opening of such packaging with the least possible use of packaging material (25, 26, 27) of a casing forming station (9) are arranged offset at an angle relative to the feed device of a blank (8) which can be separated from a material web.

Description

The invention first relates to a package for wrapping blockför bodies, especially cube-shaped or cuboid products, such as butter, Margarine, soup paste, yeast or the like, with one from a web of material tailored and folded sleeve.

Packaging of the type in question is primarily wrapped or wrapping pasty products such as butter, margarine or the like known. As a rule, the pasty product is packed in the Way that first with the help of a folding stamp a flat cut of a packaging material to form an upwardly open envelope by a folding tool, for example a folding box is pushed through. After filling the product into the case the more or less upward folding flaps of the cover either folded inwards in the manner of a bottom fold or a forehead fold, so that the filled product is enclosed on all sides. Especially when it comes to folding the floor comparatively large areas of the folding flaps covering one another, so that comparatively much packaging material is required. In addition, the bottom and forehead folds the considerable disadvantage that in both cases with a cuboid or cuboid Product three areas are interrupted by folding creases. This will not only adversely affects the appearance of the pack, but also just stand comparatively few smooth surfaces, that is to say without any wrinkles, for example wise for labeling - such as printing or the like - available. Finally bottom-folded and forehead-folded packs are comparatively difficult open, because you have to open the pack with your fingers behind you the inside of the folding tab must be gripped, with butter, margarine or the like  inevitably in contact with the sticky surface of the filled product is coming.

The invention has for its object a packaging of the type mentioned to create, which is characterized by a comparatively low consumption of packaging distinguished and can be opened easily and conveniently. In addition, there should be a procedure be proposed that the wrapping in particular cubic or cuboid pasty products with the lowest consumption of packaging material. Finally, a device is to be created in order to open Verpac easily to produce products of the type in question simply and inexpensively.

This task is used in particular for wrapping block-shaped bodies Cube or cuboid products, such as butter, margarine, soup paste, yeast or similar suitable packaging of the type mentioned solved in that the envelope is formed by an approximately square blank of the material web and with diagonally opposite folding tips in the manner of an envelope fold around the block-shaped body is wrapped around.

Depending on the product dimensions, it is also conceivable that the shell of a essentially rhombus-shaped cut with different lengths of folding tips is.

It is essential that at least on the opening side of the packaging in the Corner folds are present on diagonal opposite corners and the top of the packaging around the corners fen. As a result, the corners are particularly against pasty products Impressions or damage better protected.

The one used to make the cut and folded blanks Material web can be made of a plastic film, for example made of oriented polypropylene be formed, preferably made of paper laminated with aluminum. Of course but paper and / or other suitable materials are also suitable.

It has turned out to be particularly favorable if an outer folding tip via an adhesive point, preferably a permanent adhesive point with one underneath lying folding tip is connected or with a pressure sensitive adhesive with the underlying  Folding tip is detachably connected. With appropriately coated packaging materials is a full or partial gluing, gluing, sealing under temperature and / or possible pressure.

The object underlying the invention is in procedural terms solved in that from the web of material to be rolled into a cube or cuboid-shaped product adapted, approximately square or rhombus-shaped Cut and cut relative to the base surface of the to be wrapped Body at an angle forming a diagonally opposite folding tip is folded around the body like an envelope. Because of this angular position The cuts ensure that the product is wrapped asymmetrically. Arise Folding tips of different lengths, with which the product can be used with the least possible Packaging consumption can be encased.

The procedure according to the invention is particularly suitable for such wrapping gene, the essentially flat cut with the help of a folding stamp for formation an envelope that is open on one side is pushed through a folding tool. A blank used to wrap the product is in this case by one of a roll of material strip cut off approximately square and each according to the dimensions of the product to be wrapped relative to the folder fed at an angle.

For certain product dimensions, it has proven to be advantageous if the Cutting edges of the cut lying transversely to the transport direction are not at right angles, but rather obliquely, at an angle of up to 15 °. In this way This creates two diagonally opposite, acute-angled folding lobes, whose Peaks lie essentially in the extension of the center line of the folding stamp. On one of the elongated folding tabs can be attached to itself in a relatively simple manner even fold back the folded handle section, which makes handling the pack easier made possible by opening the packaging on this handle part without having to Opening the package comes into contact with the product.

An inventive device for wrapping block-shaped Bodies, in particular cube-shaped or cuboid products, such as butter, margarine or the like, is characterized in that the envelope forming station is relative envelope formation arranged at an angle with respect to the block-shaped body  elements and the folding station folding folder and possibly handle folder. On preferred embodiment of the invention is shown in the drawing and will explained in more detail below. Show it:

Fig. 1 shows a packaging sheet as a rotary for producing an inventive packaging SEN,

Fig. 2 shows a package according to the invention on an enlarged scale,

Fig. 3 is a plan view of a packaging blank, and a folding ram to angeord Neten of the packaging line,

Fig. 4 is a perspective view showing a kung contact with the folding ram of the packaging mate cooperating folding tool,

Fig. 5 is a detail of the folding device,

Fig. 6 shows a part of an envelope forming station with Faltdreiecken,

Fig. 7 shows a part of the envelope forming station with folding blades,

Fig. 8 shows a part of the envelope forming station with a folding box,

Figure 9 is a formed in the envelope forming station sheath.,

Figs. 10 to 16 are each a schematic illustration of process steps in forming the shell and folding the envelope into a finished package.

In Fig. 1, a packaging system is shown, in which from a roll 1 a material web 2 , for example made of oriented polypropylene or aluminum-laminated plastic film with the help of rollers 6 can be removed and a packaging machine 3 designed as a rotary machine can be fed. Instead of the rotary machine, a so-called longitudinal machine can also be provided. Between the roll 1 and the pair of rolls 6 , the material web 2 is deflected by a deflection roller 4 in such a way that the material web 2 runs essentially horizontally between the roll 1 and the packaging machine 3 . The direction of travel of the material web is indicated by arrow 5 . Between the pair of rollers 6 and the packaging machine 3 , a Quertrenneinrich device in the form of a knife 7 is arranged, with which the material web 2 can be cut to form blanks 8 .

The packaging machine 3 includes a wrapping station 9 and a folding station indicated by the arrow 11 . Between the envelope forming station 9 and the folding station 11 , a filling station 12 is arranged, with the aid of which a block body in the form of a cube-shaped or cuboid-shaped pasty product item, such as butter, margarine, soup paste, yeast or the like, can be filled in the manner described in more detail below. The product is filled in a manner known per se into a sleeve 10 formed in the sleeve forming station 9, which sleeve can optionally be transported in sleeve chambers in a direction of rotation indicated by the arrow 20 to various work stations of the packaging machine. A finished package 13 is formed from the envelope 10 in a manner explained in more detail below, as shown in FIG. 2.

Details of the envelope forming station 9 are described in more detail below. First, it is sufficient to point out that to the shell forming station 9 includes a folding ram 14, which is indicated in Fig. 1 and can be moved up and down in the sense of the double arrow 14 '. The relative position of this folding stamp 14 in relation to the essentially square or, depending on the product to be wrapped, rhombus-shaped blank 8 is shown in FIG. 3. The transport direction 5 of the blank 8 is indicated in FIG. 3 on the center line 15 of the blank 8 . The side edges 16 , 17 of the folder 14 run at an angle to the longitudinal edges 18 , 19 of the blank 8 . This angular position results in different fold areas or corners, as is explained in more detail below. One end edge 21 (cf. also FIG. 10) of the folding die 14 preferably lies on the center line 15 , while the diagonally opposite end edge 22 is offset, depending on the angular position of the folding die 14, at a distance from the center line 15 of the blank. The distance varies depending on the product to be filled or its dimensions. In this way, an angle α is formed between the center line 15 of the blank 8 and a diagonal 14 "of the folding die 14 , which can be up to 15 °. The diagonals 14 " can be parallel to the center line 15 or offset.

In the case of a rhombus-shaped configuration of the blank 8 , the cut edges run obliquely, ie in comparison to a right angle at a deviating angle β up to 15 °.

In Figs. 4 and 5, a typical structure of a shell forming station 9 is shown. The folding stamp 14 already explained in connection with FIG. 1 is located at the upper end. Below this, two folding triangles 25 are arranged at a mutual distance. Below these there are also two folding strips 26 at a distance from one another and, coaxially with them, a folding box 27 below. A view according to FIG. 5 shows that the folding strips 26 have rounded and inclined folding surfaces 28 , the interaction of which, like that of the other envelope-forming elements, is evident from FIGS . 6 to 9 described below.

As can be seen from FIG. 6, the blank 8 is selected with respect to the folding die 14 and the passage between the two folding triangles 25 such that two diagonally opposite corners of the blank 8 come to lie essentially centrally between the folding triangles. The angle at the tips of the blank is designated β '. If the folding stamp 14 is moved downwards in the direction of the arrow 14 'and thereby moved between the folding triangles 25 , the configuration of the blank shown in the lower part of FIG. 6 results, ie there are two essentially triangular folding tips 29 , 31 formed, which are diametrically opposite.

According to FIG. 7, the blank 8 with the folded-up folds 29 , 31 is now pressed further downward with the aid of the folding stamp 14 through the folded strips 26 arranged at a distance a from one another, with the folds 28 28 of the folded strips 26 being located in the corner area due to the special design of the folder 14 result in folds 32 shown in FIG. 8. A blank 8 pre-folded in this way is finally pressed with the aid of the folding punch 14 through the folding box 27 lying below the folding strips 26 , which, due to opposite rounded guide surfaces 33 , which merge into the actual folding shaft 34 , now also projects folding tabs 35 on the left and right. 36 of the cover 10 fold upwards, as can be seen from FIG. 9.

By changing the angle β ', the angles σ and ε on the folding tips 29 , 31 and 35 , 36 change . The dimension a essentially determines the angle α 'at the folding tips 35 , 36 .

For better understanding, the envelope formation and subsequent folding processes are explained in more detail with reference to FIGS. 10 to 16. First, the folding stamp 14 is used in the depending on the dimensions of the product to be wrapped at an angle to the blank 8 folding stamp 14 used to elements with the help of the above-mentioned folding and envelope forming elements, such as folding triangles 25 , the folding strips 26 and the folding box 27 to form a shell 10 , as shown in Fig. 11. The folding tips 29 , 31 and 35 and 36 , which are each connected to one another via the inner folds 32 , have a more or less vertical position ( FIG. 11). In this position, the cube-shaped or cuboid-shaped casing 10 is filled in the filling station 12 with a pasty product, such as butter, margarine, soup paste, yeast or the like.

In FIG. 12, the tip 38 of the folding tip 36 is folded over an edge of a rigid folding element 39 with the aid of a folding switch 37 which is designed as a movable slide. In Fig. 13 with the help of an externally arranged, also designed as a plate slide folding switch 41 of the folding tip 36 is folded over the area of the filled product, the tip tip 38 as a handle part designed to open the packaging initially remains in a more or less vertical position.

In Fig. 14, the other end folding tab 35 is folded back onto the product by a folding folder 42 arranged on the opposite side. The tip 38 , which is not yet in contact, is folded back onto the folding tip 36 by 180 °.

As can be seen from FIG. 15, the folding flap 29 located on the long side is folded inwards by means of a first folding folder 43 arranged on the long side of the pack 13 .

Finally, in FIG. 16, the package 13 is completed by folding the last folding tab 31 inwards by switching on an envelope or product chamber receiving the envelope 10 in the packaging machine 3 . This is done either in connection with a rigid folding switch 44 or by means of a movable folding folder 45 . The wrapping of the product with packaging material is now complete. If desired or necessary, a glue point, for example a food-safe permanent glue point, can be applied between the inside of the latter and the upper side of the previously folded down flap 29 before the last folding flap 31 is folded over.

Due to the relative angularly offset arrangement of the folding stamp 14 or the Hüllenbil training elements compared to the blank 8 , depending on the format size, there is a packaging material saving of between 25% and 30% compared to the conventional bottom folding device, in which the side edges of the folding stamp and the longitudinal edges of the blank run parallel to one another . For example, in the invention for a product format of 30 × 24 × 9 mm, a blank in the order of approximately 59 × 59 mm and, for example, for a product size of 40 × 30 × 10 mm, a blank in the dimensions of approximately 74 × 74 mm required.

The angular position between the blank and the shell-forming elements can thereby be achieved that the feed of the blank at an angle to the Envelope formation elements takes place or in that the envelope formation elements for Feed direction of the blank can be arranged at an angle.

Claims (20)

1. Packaging for wrapping block-shaped bodies, in particular cube-shaped and cuboid products, such as butter, margarine, soup paste, yeast or the like, with a sleeve ( 10 ) cut and folded from a material web ( 2 ), characterized in that the sleeve ( 10 ) is formed from an approximately square blank ( 8 ) of the material web ( 2 ) and is wrapped around the body in the manner of an envelope fold with diagonally opposite folding tabs ( 29 , 31 , 35 , 36 ). 2. Packaging according to claim 1, characterized in that the envelope ( 10 ) is formed by a substantially rhombus-shaped blank ( 8 ). 3. Packaging according to claim 1 or 2, characterized in that at least on the opening side of the packaging in the corner areas extending inner folds ( 32 ) are present, which preferably encompass the corners on two diagonally opposite end faces and the top of the packaging. 4. Packaging according to one or more of claims 1 to 3, characterized net that the material web from a plastic film, for example from oriented Polypropylene is formed. 5. Packaging according to one or more of claims 1 to 3, characterized net that the material web is made of paper laminated with aluminum.   6. Packing according to claim 5, characterized in that a handle part ( 38 ) which is folded back essentially by 180 ° is folded onto an inside of the folding tip ( 36 ). 7. Packaging according to one or more of claims 1 to 6, characterized in that an outer folding tip ( 31 ) via an adhesive point, preferably a permanent adhesive point ( 46 ) with an underlying folding tip ( 29 ) is connected or by a pressure sensitive adhesive with the underlying one Folding tip is detachably connected. 8. Method for wrapping block-shaped bodies, in particular cubic or cuboid products, such as butter, margarine, soup paste, yeast or the like with a blank of a material fed to an envelope forming and folding station web, characterized in that from the material web to the one to be driven cube or cuboid shaped product, approximately square or rhombus-shaped blank cut off and relative to the base surface of the body to be driven under a diagonally opposite folding tip forming angle is folded around the body in the manner of an envelope fold. 9. The method of claim 8, wherein the substantially flat blank using a Folding stamp to form an envelope open on one side by a folding tool is pushed through, characterized in that the blank of one of a roll of material strip cut off approximately square and each according to the dimensions of the product to be wrapped relative to the folder is fed at an angle.   10. The method according to claim 9, characterized in that the blank essentially Chen rhombus-shaped and one of the substantially vertical Stirnkan th of the folder is preferably on the center line of the supplied blank and that a second end edge of the folding die lying diagonally to the end edge lies at a distance from the center line or lies on a diagonal with the first end edge, starting from the first front edge opposite to the center line of the cut by up to deviates by 15 °. 11. The method according to claim 10, characterized in that the transverse to the trans port direction of the rhombus-shaped cut lying edges opposite one to the right-angled edges parallel to the transport direction deviate angle that is up to 15 °. 12. The method according to claim 11, characterized in that two diagonally against overlying acute-angled folding tip of the rhombus-shaped blank in the essentially lie in the extension of the center line of the folding stamp. 13. The method according to one or more of claims 7 to 12, characterized in net that the tip of an acute-angled folding tip to form a The handle section is also folded outwards and folded back onto the folding tip. 14. Device for wrapping block-shaped bodies, in particular cube-shaped or cuboid products, such as butter, margarine, soup paste, yeast or the like with a cut from a material web ( 2 ) and folded into a cover ( 10 ) blank ( 8 ) with a cover formation - and folding station (9, 11), characterized in that the envelope forming station (9) relatively with respect to the einzuschlagenden body arranged at an angle shell formation elements (14, 25, 26, 27). 15. The apparatus according to claim 14, characterized in that the shell formation elements each have paired folding triangles ( 25 ) and folding strips ( 26 ). 16. The apparatus according to claim 14 or 15, characterized in that the sheath formation station ( 9 ) one on one side of the supplied blank ( 8 ) arranged folding stamp ( 14 ) and on the opposite side of the blank ( 8 ) arranged folding box ( 27 ) with an envelope chamber which may be located below it. 17. The apparatus according to claim 16, characterized in that the folding strips ( 26 ) and / or the folding box ( 27 ) in the corner regions of the sleeve ( 10 ) formed by the blank ( 8 ) each have an inner fold ( 32 ) effecting, preferably obliquely running folding surfaces ( 28 ). 18. The device according to one or more of claims 14 to 17, characterized in that the folding station ( 11 ) on at least one side of the body to be folded handle folder ( 37 , 39 ) and preferably on all sides folding folder ( 41 , 42 , 43 , 44 , 45 ). 19. The apparatus according to claim 18, characterized in that at least some of the fold-over folds ( 41 , 42 , 43 , 45 ) are designed as plate slides. 20. The device according to one or more of claims 14 to 19, characterized by a transverse separating device ( 7 ) and optionally an adhesive application device in the region of the supplied material web ( 2 ).