WO2017174211A1

WO2017174211A1 - Composite packaging, packaging laminate, and packaging shell blank for a composite packaging

Info

Publication number: WO2017174211A1
Application number: PCT/EP2017/025073
Authority: WO
Inventors: Thomas Keck; Thomas Vetten
Original assignee: Sig Technology Ag
Priority date: 2016-04-04
Filing date: 2017-04-03
Publication date: 2017-10-12
Also published as: CN107264912B; EP3228551A1; CN206782264U; CN107264912A

Abstract

The invention relates to a composite packaging (P), in particular a beverage carton packaging for liquid foods, which consists at least partially of a packaging laminate (L), having: a packaging main body (1), an angular packaging bottom (2), and a packaging gable (3); wherein the packaging bottom (3) can be shaped on a folding mandrel of a packaging machine in such a way that the partially formed packaging can be filled and can be closed for packaging by means of the head region of the partially formed packaging. The invention further relates to a packaging laminate (L) and to a packaging shell blank (M) for producing such a composite packaging (P). In order to improve the producibility and the quality, according to the invention, seamlessly adjoining, vertical auxiliary edge stubs (9) for the folding mandrel are formed on the packaging main body (1) in the region above the bottom corners (21, 22, 23, 24), wherein the heights of said auxiliary edge stubs are each less than a third of the total packaging height.

Description

Composite package, package laminate and packing jacket blank for one

composite package

The invention relates to a composite package, in particular a

Beverage carton packaging for liquid food, which consists at least partially of a packing laminate, with a packing main body, an angular packing bottom and a packing gable, wherein the bottom of the package is moldable on a folding mandrel of a packaging machine, so that the partially molded packaging is filled by its head and can be closed to the pack ,

The invention also relates to a packing laminate having at least one

A paperboard carrier layer and a polymeric layer having a plurality of grooves formed in the material to define packing fold lines to form package edges.

Finally, the invention relates to a packing jacket blank, comprising a packing laminate with at least one cardboard carrier layer and a polymer layer, with a plurality of grooves incorporated into the material

Predefine package fold lines to form package edges, wherein the package laminate is cut to the interval of a composite package and connected by a longitudinal sealing seam to a tube.

In the field of packaging technology, composite packaging has long been part of the state of the art. For example, beverage cartons consist of various packaging materials, such as paper and plastics, which form a package laminate over the entire surface and printed. The layer structure can vary depending on the requirements, for example, for aseptic filling goods additionally

Aluminum layer inserted to achieve a good barrier effect against gases and light. The actual forming and filling of the packaging and sealing to a pack is done in a packaging machine, which is often referred to as a form / fill / seal machine based on their main functions. In the process, the hose and jacket processes have become established. While the first, the package laminate is supplied as endless material (roll goods) of the machine, in the latter case, the package laminate is already on the interval of a package

tailored. Not infrequently, such blanks are also already turned into a tube and sealed by a longitudinal seam to so-called packing jacket blanks, which are then available as a semifinished product of a corresponding machine for processing. The contents are mainly liquid foods such as

For example, drinks, soups or yogurt in question. Also conceivable are stacked, pasty or lumpy products or the like.

The packaging is created by reshaping, mating, and sometimes separating processes of the package laminate or packing jacket blank. For this purpose, the material u.a. folded (mechanically folded), so that, for example

Packing bottom and packing gable to form and arise at the packing sump body packing edges. In order to give the material the necessary bending ability, corresponding grooves are incorporated during its production. Such a groove in the manufacture of the package laminate is shown, for example, in laid-open patent application DE 10326106 AI. The embodiment shows a grooved suitable for the shell process

Pack casing blank. Increasingly in demand by the consumer market

Packaging aids such as resealable closures, opening and pouring devices, straws, pull tabs, etc. often require additional pretreatment of the package laminate, such as in the form of locally incorporated

Weakenings such as overcoated holes or special perforations or the like. Meanwhile, a variety of packaging forms are known and available. So there are packing bodies with specially designed edges, additional panels, Roundings and curved surfaces. The head area of the pack is closed, for example, by gables or sloping gables (for instance as a saddle or pent roof) or even more specific geometries. In addition, separately created moldings for the head and bottom of the pack are conceivable.

European patent application EP 1 332 969 A1 shows, for example, a helical gable packet with a pent roof created in the tube method. In the process suitable for the tube packing laminate appropriate grooves pattern for subsequent folding are incorporated. In addition, for the one embodiment is a

Weakening introduced in the region of the desired opening and the spout.

International Patent Application WO 2009/141389 A2 discloses a variety of possible packaging forms. The associated - here for the shell process

suitable - packing jacket blanks are provided with special further grooves, which are to save material and change the appearance of the package.

Such composite packages of the type mentioned above have in common that they define relatively sharp package edges, which is not always desired. Often, "softer shapes" can positively enhance visual appearance and tactility.

For example, the European application EP 0 144 736 A2 already proposes a composite package which has a cross-bottom folded out of a package laminate and an adjoining basic body which changes from an angular to a round shape. In order to ensure the grip of the largely round packing, continuous folding lines as well as relatively long shape transition fold lines are formed on the package base body both over the entire package height. The

Shape transition lines lead from a square into a round shape to the packing head, which in turn is formed from a separate, circular thermoplastic insert. It is understood that such a package is complicated to manufacture, inter alia, by its separate part. In addition, first the packing head is formed and the The packaging is then filled upside down through the lower part of the packaging and sealed to form a package, which must then be turned over again.

In recent years, various packages with additional curves and curved surfaces have been proposed, as seen, for example, in international patent application WO 2009/101029 A1. Of the

Packungsgrundkörper is indeed one piece with the pack gable shaped, the round bottom pack but formed by a separate insert. This is relatively complex connected to the pack sgrundkörper (for example, crimped). It is not uncommon for a round bottom to present disadvantages such as reduced stability, limited stackability, suboptimal pallet loading, etc., in contrast to a square. Also, multi-part packages are inherently more susceptible to leaks, often reducing the strength and shape integrity of the package. It is therefore an object of the present invention, a composite package, a

Packing laminate and a packing jacket blank of the type mentioned above and described in more detail above and further develop, that the disadvantages described are overcome. In particular, the manufacturability and quality should be improved.

This problem is solved in a composite package according to the preamble of claim 1, characterized in that the packing sgrundkörper in the area above the bottom corners seamlessly subsequent, vertical auxiliary edge stumps are formed for the folding mandrel, the height of which each smaller than a third of

Pack total height are executed.

The bottom of the package must be considered critical in the composite packages in question. He is folded on the one hand in the packaging machine on a folding mandrel and then sealed. The forming processes and thermal processes mean high stresses for the laminate. So is the edge of the

Transition from soil to pack sgrundkörper folded at right angles. The Auxiliary edge stumps form a local continuation of the corners, whereby the material is treated more gently. They offer defined attack areas for the shoulders of a folding mandrel of a packaging machine. They also protect the molds of the packaging machine.

Are the Hilfskantenstümpfe executed in their heights in each case smaller than one third of the total package height, this allows even for packs with small filling volumes that a sufficiently large attack access for the folding mandrel is created and that on the remaining at least two-thirds of the height sufficient scope for special formations as vaulting, special additional panels and curves is given.

The problem underlying the invention is also solved by a

Packing laminate adapted to be used in the manufacture of such a composite package.

The packing jacket blank according to the invention is finally such that such a composite package can be produced. A further advantageous embodiment of the invention provides that the heights of the Hilfskantenstümpfe are each designed as less than one-tenth of the total package height. This is particularly interesting when specially shaped packing body are desired and the auxiliary edge stumps on a

functional minimum should be limited without the auxiliary edge stumps should significantly determine the shape of the composite package.

In a further advantageous embodiment, all heights of the auxiliary edge stumps are made the same height. This allows a relatively uniform appearance of the package. In addition, relatively simple forming tools such as folding mandrel or mold jaws are possible. According to another teaching of the invention includes above the Hilfskantenstümpfe at least one positive curved surface. Such a surface can always be desired when "softer shapes" are supposed to improve the appearance of the package, and not infrequently, round shapes can also create an improved feel for the consumer.

Another teaching of the invention provides that the package bottom has exactly four corners. Square or rectangular floors are often desirable in terms of stability and palletability. In addition, if the corners are executed at right angles this allows easy manufacture of the package and the molds and the folding mandrel.

According to a further expedient embodiment of the pack bottom is formed as a block bottom. Such are advantageous in terms of stability, since they do not form any bulging "packing ears" on which the weight of the packing rests, and the load is distributed more uniformly over the entire floor.

Another type of embodiment according to the invention provides that connect to the rear auxiliary edge stumps package spanele. These can be the

Appearance, feel and / or strength of the pack influence positively.

A further development of the composite packaging provides that the package gable consists of packing laminate. Dispensing with additional insertion or Anspritzteile, which facilitates the production, has a positive effect on strength and

Form integrity and also minimizes the risks for local leaks.

The invention is below with reference to an embodiment facing

Drawings explained in more detail. The drawings show in: FIG. 1 a composite package according to the invention with pouring element in FIG

perspective view from the top, 1 with hidden Ausgießelement in a perspective view from the top front, the composite package of Fig. 1 with hidden Ausgießelement in a perspective view from behind, the composite package of Fig. 1 with hidden pouring element in a perspective view from the bottom front, for the Composite packing of Fig. 1 used packing material in cross-section,

Packing laminate in the interval of a package for producing a composite package shown in Fig. 1 in plan view, the front of a packing jacket blank for producing a composite package shown in Fig. 1 in a perspective view and the back of the packing jacket blank of Fig. 7a.

The embodiment shown in Figure 1 of an inventive

Composite package P is formed by a pack sgrundkörper 1, him a closing pack bottom 2 and the head part of the pack forming package gable 3. All three parts are formed by forming folding operations from the same packing material. Thus, the package bottom 2 is formed on a folding mandrel of a packaging machine via packing fold lines 8 and closed by means of ultrasound (alternatively, for example, hot air, gluing, etc. are conceivable). The bottom-closed packaging semifinished product is then filled via the open head region with a desired packaged goods and then over further Packfinklinien 8 formed for packing sgrundkörper 1 forward beveled Packungsgiebel 3, which closes the package by means of an ultrasonic welded transverse seal 12. The resulting in the formation of Packungsgiebels 3

Excess packing material sections form packing tubes 13, which are folded over to the pack main body 1 and attached to the side wall thereof. The folding and forming processes result in different defined packing edges 5 on the composite package P. In the embodiment shown, the

Pack gable 3 a pouring element 15 attached, from which the product

can be poured out.

2, the pouring element is hidden, so that a local weakening 14 of the packing material is visible. This serves a simple

Erstöffnung the composite package P and is explained in more detail below. The

Composite package P has two front package bottom corners 21, 22 each.

FIG. 3 shows the package rear side of the composite package P with a

Longitudinally sealed seam 18 and two rear package bottom corners 23, 24. The side edges are chamfered in sections, so that additional panels 11 are formed. The longitudinal sealing seam 18 adjoins closely to the one packing edge 5 of the one panel 11.

FIG. 4 shows the composite package P from below. The pack bottom 2 is in

Embodiment designed as a block floor (conceivable are also cross bottoms). The package body 1 describes on its front side almost over its entire height a positively bulged surface 10th

To all of the critical for the formation of package bottom corners 21, 22, 23, 24 close above seamless vertical auxiliary edge stumps 9 sack on sack 1. These define fixed packing edges 5 for the production on the hemming mandrel of the packaging machine, here in the shell process (conceivable also the

Hose process) works, are necessary. The same heights here

Hilfskantenstümpfe 9 limited in shown embodiment directly on the Surroundings of the package bottom corners 21, 22, 23, 24 and occupy a fraction of the total package height. At the front Hilfskantenstümpfe 9 includes the curved surface 10, so that the pack sgrundkörper 1 here no longer

Pack edge 5 is defined. At the rear auxiliary edge stumps 9 are immediately followed by the additional pack of 11 spanele.

In Figure 5, the layered structure of the packing material with a

Cardboard carrier layer 16 is shown, which is laminated on both sides with a polymer layer 17. The weakening 14 is shown in the preferred embodiment

Embodiment designed as over-coated hole. It is the

Cardboard carrier layer 16 punched out a hole before the lamination process, so that the local weakening of the finished packing material 14 only by the

Polymer layers 17 is formed. Figure 6 shows an interval of the packing material provided with creases 7 as a ready-to-use packing laminate L for forming a composite package P. The creases 7 define the later folding and creasing lines 8 for transport and packing, some of which are the later packing edges 5 and

Make auxiliary edge stumps 9. The package laminate L is further printed with a - not shown - decor and is initially available as continuous material (rolls).

In FIGS. 7a and 7b, the top and bottom of a pack jacket blank M tailored to the interval of a composite package P to be created and connected over the longitudinal seam 18 to form a tube can be seen. This one is over lateral

Folded lines for a space economic shipping (such as in a cardboard box) laid flat. Finally, the packing jacket blank M is fed to a packaging machine (operating here in the jacket) which forms, fills and closes the composite package P.

Claims

P atent claims

1.

Composite pack (P), in particular a beverage carton packaging for liquid foods, which consists at least partially of a pack laminate (L), with a pack base body (1), a square pack base (2) and a

Pack gable (3), with the pack base (3) on a folding mandrel

Packaging machine can be formed, so that the partially formed packaging can be filled and closed into the pack through its head area, characterized in that vertical auxiliary edge stubs (1) are seamlessly connected to the pack base body (1) in the area above the bottom corners (21, 22, 23, 24). 9) are designed for the folding mandrel, with their heights being designed to be less than a third of the total height of the pack.

2.

Composite pack (P) according to claim 1, characterized in that the heights of the auxiliary edge stumps (9) are each designed to be less than a tenth of the total pack height.

3.

Composite pack (P) according to one of claims 1 or 2, characterized in that all heights of the auxiliary edge stumps (9) are of the same height.

4.

Composite pack (P) according to one of claims 1 to 3, characterized in that at least one positively curved surface (10) adjoins above the auxiliary edge stumps (9).

5.

Composite pack (P) according to one of claims 1 to 4, characterized in that the pack base (2) has exactly four base corners (21, 22, 23, 24).

6.

Composite pack (P) according to one of claims 1 to 5, characterized in that the pack base (3) is designed as a block base.

7.

Composite pack (P) according to one of claims 1 to 6, characterized in that packing chips (11) adjoin the rear auxiliary edge stumps (9).

8th.

Composite pack (P) according to one of claims 1 to 7, characterized in that the pack gable (3) consists of pack laminate (L).

9.

Packaging laminate (L) with at least one cardboard backing layer (16) and one

Polymer layer (17), with a plurality of incorporated into the material

Creasing (7) to predefine pack fold lines (8) for forming pack edges (5), characterized in that a composite pack (P) can be produced according to one of claims 1 to 8.

10.

Packing jacket blank (M), consisting of a packing laminate (L).

at least one cardboard carrier layer (16) and a polymer layer (17), with a plurality of grooves (7) incorporated into the material in order to predefine pack fold lines (8) for forming pack edges (5), whereby the

Packaging laminate (L) is cut to the interval of a composite pack (P) and connected to a tube by a longitudinal sealing seam (18), thereby

characterized in that a composite pack (P) can be produced according to one of claims 1 to 8.