CZ288538B6 - Keel structure in a wraparound type carton and carton containing such structure - Google Patents

Abstract

In the present invention there is disclosed a keel structure in a wraparound type carton being formed by folding and overlapping of parts of carton (Ct) blank (10) and comprising a number of keel elements (K, Ka) which separate one row of containers (Cn) from another row within the carton, whereby each keel element (K, Ka) has a pair of spaced upstanding panels i.e. a first upstanding panel (P, Pa) and a second upstanding panel (32, 32a), each abutting against the container (Cn) of one of the rows, whereby both upstanding panels (P, Pa) and (32, 32a) are spaced from each other by a platform (P1, P1a) being attached to the both said panels (P, Pa) and (32, 32a) for enabling deflection of their areas adjoining the platform (P1, P1a) inwardly toward each other to allow a wall portion of an adjacent container (Cn) to be more closely received against the keel element (K, Ka). The invented keel structure is characterized in that the platform (P1, P1a) forms an inwardly flexed part of one of

Description

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a keel structure in a wrapper of an overwrapping type of cardboard formed from cardboard or a similar layer of foldable material and placing the containers in the wrapper arranged in parallel rows.

BACKGROUND OF THE INVENTION

The known keel structure in the overwrap type packaging comprises a structure that may be a continuous keel structure or may include a plurality of keel elements that separate one row of containers from another within the carton.

From EP 461947 a package is known for a group of substantially identical products arranged in several rows, with a keel structure having a plurality of keel elements which separate one row of containers from the other within the package. The casing comprises a top part, a base part from which a keel structure extends for separating two adjacent rows of articles, and two side walls connecting the top part and the base part to form a tubular structure of the casing. The keel element always comprises a pair of opposing upright side walls and is a separating front wall parallel to the base part and a pair of tongues connecting the edges of the opposite side walls of the element. Each pair of side walls is hinged to the base of the base and the side wall comprises an inwardly bendable upright adjacent the respective container.

It is an object of the present invention to provide a solution with improved abutment of the container wall against a given keel element.

SUMMARY OF THE INVENTION

The invention provides a keel structure in a overpack-type carton comprising a plurality of keel elements that separate one row of containers from another within the carton, each keel having spaced opposing two upright portions adjacent the container spaced apart by a platform attached to each upright part to allow the upright parts to bend inwardly toward each other and thereby the container wall to engage more tightly against the keel element.

A keel structure in the overwrap type wrapper formed by folding and overlapping the carton blank parts comprising a plurality of keel elements separating one row of containers from the other within the carton wrapper, each keel having a pair of opposed, upright parts, a first upright piece and a second upright portion, each adjacent to a container of one of the rows, the two upright portions spaced apart by a platform attached to both said portions to allow their portions adjacent to the platform to bend inwardly for a closer fit of the wall of the adjacent container against a keel element, the essence of which is that the platform forms an extruded part of one of said upright parts and is bounded by curved edges extending towards one another.

In a preferred embodiment of the keel structure, the platform of each keel member is hinged to the first and second upright panels each by two spaced hinge joints between which they are not attached to the upright panels to connect the first and second upright panels in the form of a bridge of similar structure.

-1 CZ 288538 B6

In this case, it is further preferred that the first upright portion forms a resilient front end of the keel extending over and extending therebetween, and the second upright part forms an opposing distal resilient front end of the keel extending from the hinges and thereto materially connected.

In this keel structure, it is further preferred that the second upright portions of the keel elements form a substantially continuous unitary portion of the carton blank.

The platform may form an extruded portion of the second upright.

The keel structure according to the invention can further advantageously be designed such that both upright portions form an extruded portion of one of the peripheral portions of the carton blank overlapping each other to form the base of the package and the platform is an extruded portion of one of the two upright portions.

The keel structure has a platform bounded by curved edges extending towards one another.

According to a further preferred embodiment, the keel structures of the region of the two upright parts adjacent to the curved edges of the platform are divided by a slot for easier bending.

It is preferred that the upright part is connected by a hinge line to the edge portion of the carton blank.

The keel structure according to a further preferred embodiment has keel members forming an extruded portion of one of the edge portions of the carton blank overlapping each other to form the base of the package.

The keel structure may comprise an upright piece connected by a hinge line to an edge portion of the blank.

The truss structure preferably has a platform bounded by curved edges extending towards each other and the regions of at least one of the two upright parts adjacent to the curved edges are divided by a slot so that they can more easily bend.

The keel structure in the overwrap type wrapper formed by folding and overlapping the carton blank parts according to another aspect of the invention comprises a plurality of keel elements that separate one row of containers from the other within the wrapper, each keel having a pair of opposing upright parts. a first upright part and a second upright part, each adjacent to a container of one of the rows, the two upright parts being spaced apart by a platform attached to both said parts and allowing their regions adjacent to the platform to bend inwardly behind the purpose of the closer fit of the wall of the adjacent container against the keel element is that the platform is delimited by curved edges extending towards each other and an area of at least one of the two upright parts adjacent to the curved edges of the platform; are divided by a slot so that they can flex more easily.

A wrapper type wrapper formed by folding and overlapping the carton blank parts comprising a keel structure according to any of the preceding embodiments, has a platform and the upright keel parts form an extruded portion of one of the edge portions of the carton blank overlapping each other to form a base .

-2GB 288538 B6

Preferably, the wrapper comprises an upright piece connected by a hinge line to an edge portion of the blank.

Further, the wrapper may advantageously have a platform which is bounded by curved edges extending towards each other and the regions of at least one of the two upright parts adjacent to the curved edges are divided by a slot so that they can more easily bend.

The keel structure thus formed allows the containers to be fitted more tightly and reliably against the keel elements. These and other advantages will be apparent from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS

The keel structure according to the invention and the container comprising the structure will now be described by way of example 15 with reference to the drawings, wherein Fig. 1 is a plan view of a semi-finished package with a keel structure according to the invention. Fig. 1, Fig. 2 is a perspective view of a portion of the package as seen from one end formed from the blank of Fig. 1; Fig. 3 is a plan view of a portion of a carton blank with a different partition panel configuration; a perspective view showing part of the modified hernia of FIG. 3.

DETAILED DESCRIPTION OF THE INVENTION

Giant. 1 illustrates a wrapper type blank 10 formed from a cardboard Ct, cardboard or a similar layer of foldable material. The keel elements K are formed in line in one of the edge portions 12, 20 of the carton blank 10, forming the base of the package after the blank 10 has been folded. The blank 10 includes a plurality of flexibly joined portions comprising an edge portion 12 forming a first base portion, a first side wall portion 14, a top wall portion 16, a second side wall portion 18, and a second edge portion 20 forming a second shell base portion, respectively. Said parts are collapsible to form a package of cardboard Ct, one after the other, along the cross fold lines 22, 24, 26, 28, respectively.

Each of the keel elements K in the rim 12 forming the first base part envelops a similar assembly 35 and is shown in more detail in Fig. 1a and Fig. 2, which shows the keel element K in its erect form.

The keel element K comprises a bridge-like structure comprising a first upright part P and a platform P1 hung together along the short lines of the hinge joints h and h1. The first upright panel P is hinged to the edge panel 12 by a hinge from these hinge joints h and h1 along the broken line h2 and the platform P1 is hung into the second upright panel 32 of the keel element K along the short hinge lines h3 and h4. The second upright portion 32, in the form of a one-piece partition, is hinged to the edge portion 12 forming the first package base portion along the broken bend line 34. The first upright portion P and the second upright portion 32 are provided with a slot or groove S and SI such that The adjacent portions of the portions P and 32 are detachable from each other and can be relatively easily bent around the adjacent hinged portions of the portions P and 32. Thus, the first upright portion P with the slot S can be bent inwardly toward the platform P1 by bending the portions between its hinge joints. h into the space defined by the curved edge C of the platform P1. Similarly, the second upright portion 32 with slot S1 can be bent inwardly toward platform P1 by bending portions between its 50 hinge joints h3 and h4 into the space defined by the curved edge C1 of platform P1. Other keel elements K1, K2, K3 have the same features as the keel element K just described. However, in some embodiments of the keel element according to the invention, the slits or grooves may be omitted.

-3GB 288538 Β6

As best seen in FIG. 2, when the blank 10 is wrapped around a plurality of containers Cn to form a carton, one row of containers Cn is aligned adjacent the other upright portion 32 forming the partition, while the other row of containers Cn is assigned to the first upright portions P the hinge elements K to K3 such that each container Cn is arranged at its wall adjacent either to the partition second upright 32 or to the first upright part P corresponding to the hinge elements K to K3. Due to the deflection provided by the two upright portions P and 32, the Cn containers adjacent to these portions are allowed to "settle" and be more tightly held against the adjacent curved edge C, Cl of the PI platform to improve containment of the Cn containers between the keel elements K to K3 in adjacent rows so as to counteract the release of the Cn containers.

In the just described embodiment of the invention, the second upright portion 32 is in the form of a substantially continuous unitary portion of the rim portion 12 forming the first package base portion that is folded out of the plane of the blank 10 into an upright position and thus has the form of a partition. The respective platforms P then form an extruded part of the upright part 32. In an alternative embodiment of the invention, according to Figs. 3 and 4, the partition is formed by several individual partition parts, one for each keel element Ka, i.e. each individual partition part is formed by a second upright. 32a of the keel element Ka. According to the embodiment of Figs. 3 and 4, the same parts are designated with the same reference numerals with the suffix "a", except that here, the individual keel elements Ka are pushed out of the edge piece 20a forming the second part of the base of the carton.

Thus, each keel element Ka comprises a first upright part Pa having a slot Sa to facilitate its bending towards the curved edge Ca of the platform Pia. An individual second upright member 32a is associated with each keel element Ka, hinged to the edge member 20a and along the broken hinge line 36. Each of the members 32a is pushed out of the edge member 20a and tilted to an upright position out of the plane of the edge member 20a so that the slot or the groove S1 of part 32a is located at the curved edge C1 of platform Pia. The platform Pia is pushed out of the second upright 32a. However, the function of the keel structure Ka according to this embodiment of the invention is the same as that of the embodiment previously described. Here, too, the slits or grooves Sa, Sla can be omitted.

Claims (15)

PATENT CLAIMS A keel structure in a overwrap-type carton formed by folding and overlapping carton (10) parts (10) comprising a plurality of keel elements (K, Ka) separating one row of containers (Cn) within the carton, wherein each keel element (K, Ka) has a pair of opposing, upright portions, a first upright portion (P, Pa) and a second upright portion (32, 32a) each adjacent a container (Cn) of one of the rows, wherein the two upright portions (P, Pa) and (32, 32a) are spaced apart by a platform (P1, Pia) connected to both said portions (P, Pa) and (32, 32a) to allow for deflection of their adjacent regions to the platform (P1, Pia), inwardly in order to seal the wall of the adjacent container (Cn) against the keel element (K, Ka), characterized in that the platform (P1, Pia) forms an extruded part of one of the said the upright parts (P, Pa) and (32, 32a). The keel structure according to claim 1, characterized in that the platform (P1, P1a) of each keel element (K, Ka) is suspended in the first and second upright parts (P, Pa) and (32, 32a) respectively by two spaced hinged joints (h, hl, ha, hla) and (h3, h4, h3a, h4a) between which they are not attached to the (P, Pa) and (32,32a) parts to connect the first and second upright parts ( P, Pa) and (32, 32a) in the form of a bridge-like structure. -4GB 288538 B6 The keel structure according to claim 2, characterized in that the first upright part (P, Pa) forms a flexible front side of the keel element (K, Ka) extending over the range of the hinge joints (h, hl, ha, hla) and v and the second upright portion (32, 32a) forms the opposing distal, flexible end face of the keel element (K, Ka) extending from the hinge joints (h3, h4, h3a, h4a) and thereto substantially coextensive. The keel structure according to claim 3, characterized in that the second upright parts (32) of the keel elements (K) form a substantially continuous unitary part of the blank (10) of the carton (Ct). 5 of cardboard (Ct) overlapping each other to form the base of the package. -5 CZ 288538 B6 The keel structure according to claim 3 or 4, characterized in that the platform (Pia) forms an extruded part of the second upright (32a). Keel structure according to any one of claims 1 to 4, characterized in that the two upright parts (P, Pa) and (32, 32a) form an embossed portion of the carton base (Ct) and the platform (P1, Pia) is an embossed portion of one of the two. the upright parts (P, Pa) and (32, 32a). A keel structure according to any one of claims 1 to 4, characterized in that the platform (P1, P1a) is bounded by curved edges (C, Cl, Ca, Cla) extending towards one another. Keel structure according to claim 7, characterized in that the regions of the two upright parts (P, Pa) and (32, 32a) adjacent to the curved edges (C, Cl, Ca, Cla) of the platform (P1, P1a) are divided by a slot (S, S1, Sa, Sla) for easier bending. Truss structure according to any one of the preceding claims, characterized in that the truss elements (K, Ka) form an extruded portion of one of the edge portions (12) and (20) of the carton blank (10) overlapping each other. forming the base of the package. A keel structure according to claim 9, characterized in that it comprises an upright part (32, 32a) connected by a hinge line (34, 36) to the edge part (12, 20a) of the blank (10). The keel structure according to one of the preceding claims, characterized in that the platform (P1, P1a) is bounded by curved edges (C, Cl, Ca, Cla) extending towards each other and at least one of the two upright parts (P1). Pa) and (32, 32a) adjacent to the curved edges (C, Cl, Ca, Cla) are divided by a slot (S, S1, Sa, Sla) for easier flexing. A keel structure in a overpack-type carton formed by folding and overlapping the carton (10) parts (10) of a carton (10) comprising a plurality of keel elements (K, Ka) separating one row of containers (Cn) from the other, each keel element (K, Ka) having a pair of opposed, upright sections, a first upright section (P, Pa) and a second upright section (32, 32a) each adjacent a container (Cn) of one of the rows, the two upright portions (P, Pa) and (32, 32a) are spaced apart by a platform (P1, Pia) attached to both said portions (P, Pa) and (32, 32a) to allow their regions adjacent to the bend to bend a platform (P1, Pia) inwardly in order to fit the wall of the adjacent container (Cn) more closely against the keel element (K, Ka), characterized in that the platform (P1, Pia) is bounded by curved edges (C, Cl, Ca) , Cla) stretch The slots (S, S1) are directed towards each other and the regions of at least one of the two upright parts (P, Pa) and (32, 32a) adjacent to the curved (C, Cl, Ca, Cla) edges of the platform (P1, P1a). , Sa, Sla) for easier sagging. A wrapper type wrapper formed by folding and overlapping carton (10) blank parts (10) comprising a keel structure according to any one of the preceding claims, characterized in that the platform (P1, P1a) and upright parts (P, Pa, 32, 32a) the keel element (K, Ka) of the keel structure forms an extruded portion of one of the edge portions (12) and (20) of the blank (10) Packaging according to claim 12, characterized in that it comprises an upright part (32, 32a) connected by means of a hinge line (34, 36) to the edge part (12, 20a) of the blank (10). io Packaging according to claim 13 or 14, characterized in that the platform (P1, P1a) is bounded by curved edges (C, Cl, Ca, Cla) extending towards each other and the region of at least one of the two upright parts (P, Pa). and (32, 32a) adjacent to the curved edges (C, Cl, Ca, Cla) are divided by a slot (S, S1, Sa, Sla) for easier flexing.