CN107264912B

CN107264912B - Composite package, package laminate for a composite package and packaging sleeve blank

Info

Publication number: CN107264912B
Application number: CN201710217730.0A
Authority: CN
Inventors: T·费滕; 托马斯·凯克
Original assignee: SIG Technology AG
Current assignee: Kangmeibao Service Co ltd
Priority date: 2016-04-04
Filing date: 2017-04-05
Publication date: 2021-10-15
Anticipated expiration: 2037-04-05
Also published as: EP3228551A1; WO2017174211A1; CN206782264U; CN107264912A

Abstract

The invention relates to a composite material package, in particular a beverage box package for liquid food, which is at least partially formed from a package laminate and has a package base, a corner-bearing package base and a package gable top, wherein the package base can be formed on a folding mandrel of a packaging machine, so that the partially formed package can be filled via its top region and can be closed to form the package. And a packaging laminate and a packaging sleeve blank for manufacturing a composite package of this type are also shown and described. In order to improve the producibility and quality, it is provided that vertical auxiliary edge margins for folding mandrels are formed in a seamless adjoining manner on the packaging base body in the region above the bottom corners, the height of the auxiliary edge margins in each case being less than one third of the overall height of the packaging.

Description

Composite package, package laminate for a composite package and packaging sleeve blank

Technical Field

The present invention relates to a composite package, in particular a beverage box package for liquid food, at least partly consisting of a package laminate, having: a package base, a package bottom with corners and a package gable top, wherein the package bottom is formed on a folding mandrel of a packaging machine, so that the partially formed package can be filled through its top area and can be closed to form a package.

The invention also relates to a packaging laminate having at least one paperboard carrying layer and at least one polymer layer, which has a plurality of creases machined into the material, thereby predefining package fold lines for forming package edges.

Finally, the invention relates to a packaging sleeve blank consisting of a packaging laminate having at least one paperboard carrier layer and at least one polymer layer and having a plurality of folds machined into the material, thereby predefining package folding lines for forming package edges, the packaging laminate being cut to size at intervals of one composite package and the packaging laminate being joined by a longitudinal sealed seam to form a tube.

Background

Composite material packages have long been part of the prior art in the field of packaging technology. Thus, for example, there are beverage boxes made of different packaging materials (such as paper and plastic) which, when fully joined and printed, form a packaging laminate. The layer structure can be varied as desired, so that, for example, an aluminum layer is also inserted for the sterile product in order to achieve a good gas and light barrier.

The actual forming and filling process and the closing process of the packages to form the packages are carried out in packaging machines, which are also commonly referred to as forming/filling/sealing machines according to their main function. In this case, the tube making process and the sleeve process have been completed. In the first process, however, the package laminate is supplied to the machine as a continuous material (rolled web), whereas in the latter process the package laminate has been cut to size at intervals of one package. Moreover, blanks of this type have also conventionally been wound to form tubes and joined by longitudinal sealing seams to form so-called packaging sleeve blanks, which are then ready to be processed in suitable machines into semi-finished products. Possible filling products are mainly liquid foods (such as drinks, soups or yogurts). Cured, paste-like or block-like products, etc. are also conceivable.

The package is manufactured by a process of forming, joining and sometimes even separating of a package laminate or a package sleeve blank. For this purpose, the material is in particular folded (machine-folded) so that, for example, a package base and a package gable are formed, and a package edge is formed on the package base. In order to provide the material with the required flexibility, suitable creases are made during the manufacture of the material. Such a creasing process during the manufacture of the packaging laminate is shown, for example, in the german patent application DE 10326106 a1 belonging to the applicant. This embodiment shows a creased packaging sleeve blank suitable for the sleeve process. Packaging aids, which are highly desired by the consumer market, such as reclosable seals, opening and pouring devices, straws, pull tabs, etc., often require additional pretreatment of the packaging laminate, for example in the form of locally introduced weaknesses such as pre-laminated holes or special perforations, etc.

At the same time, all kinds of package forms are known and can be used. Therefore, there are the following packages: with specially formed edges, additional plates, bends and curved surfaces. The top area of the package is closed, for example, by a flat gable top or an inclined gable top (e.g. as a saddle roof or a single pitched roof) or by a more special shape. Also, separately made formations may be used for the top area of the package and the bottom of the package.

European application EP 1332969 a1 shows, for example, an inclined gable-top package produced in a tube-making process with a single pitched roof. Suitable crease patterns for the subsequent folding process have been worked into the packaging laminate, which is suitable for the tube-making process. Furthermore, the weakening is introduced into the area of the predetermined opening and into the area of the pouring device for this embodiment.

International patent application WO 2009/141389 a2 discloses a large number of possible packaging forms. The relevant packaging sleeve blank, which is suitable here for the sleeve process, is provided with special additional folds, which serve to save material and to change the outer appearance of the package.

This is generally the case for composite packages of the aforementioned type: they define relatively sharp package edges, which are always undesirable. For the "softer form", visual appearance and feel can often be positively improved.

Thus, european application EP 0144736 a2 proposes a composite package having a cross bottom folded angularly by the package laminate and an abutting matrix which changes from an angled form to a rounded form. In order to ensure the gripping of the generally rounded package, fold lines extending over the entire height of the package and relatively long shape transition fold lines are formed on the package base. The shape transition line, which is formed by the separate, rounded thermoplastic insert, as such, changes from an angled shape to a rounded shape all the way to the top of the package. It will be appreciated that this type of package is expensive to manufacture, especially due to its separate components. Also, first, the top of the package is formed, and then the package is filled and closed "upside down" by the lower region of the package to form the package. The package must then be turned over again.

Moreover, in the recent past, various packages with additional bends and curved surfaces have been proposed, for example in international patent application WO 2009/101029 a 1. Although the package base is formed in one piece with the package gable top, the rounded package base is formed by a separate insert. The separate insert is joined (e.g. crimped) to the base body of the package in a relatively complicated manner. Moreover, rounded bottoms generally result in disadvantages compared to bottoms with corners, such as: reduced stability, limited stackability, suboptimal tray availability, etc. Also, multi-part packages are themselves more prone to leakage, and they generally reduce the strength and dimensional integrity of the package.

Disclosure of Invention

It is therefore an object of the present invention to configure and improve a composite package, a package laminate and a packaging sleeve blank of the initially mentioned type, which have been elaborated before, such that the described disadvantages are overcome. In particular, the producibility and quality are improved.

This object is achieved by a composite package according to an embodiment of the invention, in particular a beverage box package for liquid food, which is at least partially composed of a package laminate and has: a package base, a package bottom with corners and a package gable top, wherein the package bottom is formable on a folding mandrel of a packaging machine, such that a partially formed package is fillable through a top area of the partially formed package and is able to be closed to form the package; wherein vertical auxiliary edge stubs (stub) for the folding mandrels are formed in a seamless adjoining manner on the packaging base body in the region above the corners of the base part, and the height of the auxiliary edge stubs is in each case less than one third of the overall height of the packaging. This makes it possible, even in the case of packages with a small filling volume, to provide a sufficiently large engagement passage for the folding mandrel and sufficient space for the arrangement of the particular embodiment (e.g. the bulge, the particular further plate and the bend) over the remaining two thirds of the height.

In the composite package in question, the package bottom must be considered critical. The package bottom is folded on a folding mandrel in a packaging machine and then closed. The forming process and the thermal process imply high stresses for the laminate. The edges of the transition from the bottom to the base of the package are therefore also arranged in a right-angled rounded manner. The auxiliary edge remnants, by means of which the material is handled more carefully, form locally continuous corners. They provide a defined engagement area for the shoulder of the folding mandrel of the packaging machine. They also protect the forming tools of the packaging machine.

The basic object of the present invention is also achieved by a packaging laminate configured to: which is suitable for manufacturing composite packages of this type.

Finally, the packaging sleeve blank according to the invention is configured such that it can produce composite packages of this type.

A further advantageous embodiment of the invention provides that the height of the auxiliary edge remnants is respectively configured to be less than one tenth of the overall height of the package. This is particularly advantageous when a specially shaped package base is required and the remaining secondary edge margins are limited to a minimum functionality, wherein the secondary edge margins are not used to substantially determine the shape of the composite package.

In a further advantageous embodiment, the height of all auxiliary edge residues is configured to be the same. This allows for a relatively consistent appearance of the package. Moreover, relatively simple forming tools (such as folding mandrels or moulding jaws) are thus made possible.

According to a further teaching of the present invention, the at least one convexly curved surface abuts above the auxiliary edge residual. This type of surface may always be required if the "softer shape" improves the appearance of the package. However, the rounded shape also generally provides an improved surface feel for the consumer.

Another teaching of the present invention provides that the bottom of the package has exactly four corners. With respect to stability and stacking (palletizing) capability, a square or rectangular base is generally desirable. Furthermore, if the corners are arranged at right angles, this allows for a simple manufacture of the package and the forming tool as well as the folding mandrel.

According to a further advantageous embodiment, the bottom of the package is configured as a block-shaped bottom. This type of bottom is advantageous in terms of stability, but they do not form any protruding "package ears", on which the weight of the package is loaded. The load is distributed relatively evenly over the entire bottom.

Another embodiment of the composite package provides that the gable top of the package is formed from a laminate of the package. This simplifies manufacturing, has a positive impact on strength and dimensional integrity, and also minimizes the risk of local leakage if no additional insert or injection is used.

Drawings

The invention is described in more detail below with reference to the accompanying drawings showing one embodiment. In the drawings:

fig. 1 shows a perspective view of a composite package with a pouring element according to the invention, seen from the front above;

fig. 2 shows a perspective view of the composite package from fig. 1 with the pouring element hidden, seen from the front above;

FIG. 3 shows a perspective view of the composite package from FIG. 1 with a hidden pouring element, viewed from the rear;

FIG. 4 shows a perspective view of the composite package with hidden pouring element from FIG. 1 from the front below;

fig. 5 shows a cross-sectional view of a packaging material for the composite package from fig. 1;

FIG. 6 shows a plan view of a package laminate spaced one package for making the composite package shown in FIG. 1;

fig. 7a shows a perspective view of the front side of a packaging sleeve blank for producing the composite material package shown in fig. 1; and

fig. 7b shows the rear side of the packaging sleeve blank from fig. 7 a.

Detailed Description

The embodiment of a composite package P according to the invention shown in fig. 1 is formed from the following parts: a package base 1, a package bottom 2 closing the package base and a package gable 3 forming the top of the package. All three portions are formed from the same packaging material by a form-folding process. The package bottom 2 is thus formed on a folding mandrel of the packaging machine via the package folding line 8 and sealed by ultrasound (alternatively, for example hot air, adhesive, etc. are conceivable). The bottom-sealed semifinished packaging product is then filled with the desired packaging product via the open top region, and the packaging gable 3, which is inclined forward relative to the packaging base 1, is then formed by means of a further packaging fold line 8, the packaging gable 3 sealing the packaging by means of the ultrasonically welded transverse sealing seam 12. The excess packaging material portion produced during the forming of the packaging gable 3 forms a packaging ear 13 which is placed around the packaging base 1 via folding and is attached to the side wall of the packaging base 1. Due to the folding and forming process, differently defined package edges 5 are made on the composite package P. In the embodiment shown, the pouring element 15 is fitted to the gable wall 3 of the package, from which the product can be poured.

In the view of fig. 2, the pouring element has been hidden so that the local weakness 14 of the packaging material is easily visible. This weakness serves to ease initial opening of the composite package P and is described in more detail below. The composite material packages P have in each case two

front bottom corners

21, 22 of the packages.

Fig. 3 shows the rear of a composite package P with a longitudinal sealing seam 18 and two rear package

bottom corners

23, 24. The side edges are partially inclined so as to form an additional plate 11. The longitudinal sealing seam 18 is tightly joined to a package edge 5 of a panel 11.

Fig. 4 shows the composite package P seen from below. In this embodiment, the bottom 2 of the package is configured as a block-shaped bottom (a cross bottom is also conceivable). The packaging base 1 describes an outwardly convexly curved surface 10 on its front, almost over its entire height.

The vertical auxiliary edge remnants 9 on the packaging base 1 abut seamlessly in particular over the

bottom corners

21, 22, 23, 24 of the packages, which is essential for the forming process. These remnants define the fixed package edges 5, which fixed package edges 5 are necessary for manufacture on the folding mandrels of the packaging machine, which operates here in a sleeve process (a tube-making process is likewise conceivable). In the embodiment shown, the height of the auxiliary edge remainder 9, here equal, is limited directly to the micrometer (um) range of the package

bottom corners

21, 22, 23, 24 and comprises a part of the overall package height. The curved surface 10 adjoins the front auxiliary edge stub 9, so that here the packaging base 1 is no longer delimited by the packaged edge 5. The additional wrapping sheet is immediately adjacent to the rear auxiliary edge remnant 9.

Fig. 5 shows the layer structure of a packaging material with a paperboard carrier layer 16 laminated on both sides with polymer layers 17. In the embodiment shown and preferred in this respect, the weakpoint 14 is configured as a prelaminated hole. In this respect, holes are punched in the paperboard carrier layer 16 before the lamination process, so that in the finished packaging material the local weaknesses 14 are formed solely by the polymer layer 17.

Fig. 6 shows a spacing of the packaging material provided with creases 7 as a ready-to-use package laminate L for forming a composite package P. The crease 7 defines in advance subsequent folding and creasing lines 8 for transport and package manufacture, some of which form the subsequent package edge 5 and the auxiliary edge remnant 9. Furthermore, the package laminate L is printed with a decorative portion (not shown) and initially provided as a continuous material (web).

Fig. 7a and 7b show the upper and lower sides of a packaging sleeve blank M which is cut to size at intervals of the composite material packages P to be manufactured and joined via longitudinal seams 18 to form a tube. The packaging sleeve blank is laid flat via lateral fold lines for space-saving allocation (e.g. in cardboard packages). The packaging sleeve blank M is finally supplied to a packaging machine (operating here in a sleeve process) which forms, fills and seals the composite material packages P.

Claims

1. A composite package (P) at least partially consisting of a package laminate (L), the composite package (P) having: a package base (1), a cornered package bottom (2) and a package gable top (3), wherein the package bottom (2) is formable on a folding mandrel of a packaging machine, such that a partially formed package is fillable through a top area of the partially formed package and is closable to form the package, characterized in that,

vertical auxiliary edge margins (9) are formed in a seamless abutting manner on the package base body (1) in the area above the bottom corners (21, 22, 23, 24) so as to provide a defined joining area for the shoulders of the folding mandrel, the height of the auxiliary edge margins (9) being respectively less than one third of the entire height of the package, at least a front auxiliary edge margin (9) having a free end without any other abutting package edge (5), and at least one convexly curved front surface (10) which does not contain any package edge (5) abutting directly above the front auxiliary edge margin (9).

2. A composite package (P) according to claim 1, wherein the height of the auxiliary edge remainder (9) is respectively configured to be less than one tenth of the overall height of the package.

3. A composite material package (P) according to claim 1 or 2, characterized in that the height of all the auxiliary edge remnants (9) is configured to be the same, respectively.

4. A composite package (P) according to claim 1 or 2, wherein the package bottom (2) has exactly four bottom corners (21, 22, 23, 24).

5. A composite package (P) according to claim 1 or 2, wherein the package bottom (3) is formed as a block bottom.

6. A composite package (P) according to claim 1 or 2, wherein the packaging panel (11) adjoins the rear auxiliary edge remainder (9).

7. A composite package (P) according to claim 1 or 2, wherein the package gable top (3) consists of a package laminate (L).

8. A composite package (P) according to claim 1 or 2, characterized in that it is a beverage box package for liquid food.

9. A packaging laminate (L) having at least one paperboard carrier layer (16) and at least one polymer layer (17), said packaging laminate (L) having a plurality of creases (7) machined into the material, thereby predefining packaging fold lines (8) for forming packaging edges (5), characterized in that,

a composite package (P) according to any of claims 1 to 8 can be manufactured.

10. A packaging sleeve blank (M) of a packaging laminate (L) having at least one paperboard carrier layer (16) and at least one polymer layer (17) and having a plurality of creases (7) worked into the material, thereby predefining package fold lines (8) for forming package edges (5), wherein the packaging laminate (L) is cut to size at intervals of one composite package (P) and joined by longitudinal sealing seams (18) to form a tube, characterized in that,

a composite package (P) according to any of claims 1 to 8 can be manufactured.