EP0576640B1

EP0576640B1 - Carton with reinforcing clip panel

Info

Publication number: EP0576640B1
Application number: EP92925020A
Authority: EP
Inventors: Philippe Le Bras; Jean Chaussadas
Original assignee: Mead Corp
Current assignee: Mead Corp
Priority date: 1991-10-24
Filing date: 1992-10-23
Publication date: 1998-01-07
Anticipated expiration: 2012-10-23
Also published as: MY108993A; CA2103886C; AU3122993A; GR3025975T3; ATE161791T1; EP0576640A1; EP0576640A4; WO1993008096A1; CN1036189C; CA2103886A1; HUT67652A; IL103509A; DK0576640T3; DE69223951D1; HU219213B; CN1074419A; EG19668A; NZ244842A; ES2110527T3; IL103509A0

Abstract

A carton (10, 610) accommodating a group of articles, such as bottles (B), comprises a sleeve (12, 612) having a plurality of foldably interconnected panels and a reinforcing clip panel (14, 614) which secures the articles together in a group. A top of the carton is provided by the combination of at least one panel of the sleeve and the clip panel.

Description

The invention relates to a carton which accommodates a plurality of articles such as bottles and which comprises a paperboard part and clip panel which secures the articles together in a group.

It is known to package a plurality of articles such as bottles or cans in, for example a wraparound carton made of paperboard or like foldable material. Such cartons generally comprise a blank having a number of foldably interconnected panels which wrap around an array of articles to form a sleeve which retains the articles. US 3 167 347 (Hewlings) discloses a carrying device which is attached to an array of articles to provide a handle part of the packaging in addition to a wraparound blank. Hewlings specifically discloses a carrying device which has a panel comprising a number of apertures through which the top of a necked bottle passes, the rim of the apertures engaging the underside of the bottle top or cap. The carrying device also has an upright handle attached to the aperture panel. The overall device is made of a relatively rigid material which has the necessary structural strength but where distortion of the aperture panel can occur thereby ensuring that the articles are gripped by the aperture rims. This known device requires that the articles are packaged in a wraparound carton which provides full packaging per se and where the known gripping device is utilized as an optional element to engage, say, only four of a greater number of bottle necks which protrude from the top panel of the carton to facilitate carrying the package.

This particular disclosure in the known art thus provides a carton having an upper relatively rigid panel which engages a number of articles and ensures a sturdy handle is provided for the overall package. However, all articles are in any event wrapped and retained by a wraparound blank. The blank itself provides complete packaging material for the articles.

One aspect of the present invention provides a carton accommodating a group of articles, such as bottles, comprises a sleeve-like part having a plurality of foldably interconnected panels and a relatively rigid plate which secures said articles together in a group characterised in that said relatively rigid plate is stiff relative to the interconnected panels and which provides, together with at least one of the sleeve panels, a top of the carton.

According to a feature of this aspect of the invention said one panel of the sleeve may be attached to the articles.

According to another feature of this aspect of the invention said one panel of the sleeve may be attached to the relatively rigid plate. Preferably, said relatively rigid plate comprises article engaging means.

According to yet another feature of this aspect of the invention said carton, in at least one orientation, may provide an endless sleeve-like wrapper about said group of articles. Preferably, opposite ends of the wraparound blank are adapted to secure the blank to said relatively rigid plate. It is also preferable for opposite ends of the blank to be adapted to secure the blank to said articles.

In some constructions where the carton is a wraparound sleeve, one end of the blank may be adapted to secure the blank to the articles and the other end of said blank is adapted to secure the blank to said relatively rigid plate. In other constructions where the carton is a wraparound sleeve the blank may be adapted to be attached to both articles and said relatively rigid plate at said opposite ends of said blank.

Another aspect of the invention provides the combination of a carton for packaging a group of articles, such as bottles which carton comprises foldable sheet material in which said article group is to be accommodated and a plate which is stiff relative to the wrapper material which is secured to the article group and which provides, together with at least one of the sleeve panels, a top of the carton.

Specific embodiments of the invention will now be described by way of example only with reference to the accompanying drawings in which:

FIGURE 1 shows a perspective view of a first embodiment of a wraparound type carton according to the invention;

FIGURE 2 shows a plan elevation of a carton blank utilized in the carton shown in Figure 1;

FIGURE 3 shows a perspective view of the relatively rigid panel part of the carton shown in Figure 1;

FIGURE 4 shows a perspective view of a second embodiment of a wraparound type carton according to the invention;

FIGURE 5 shows a perspective view of the relatively rigid panel part of the carton shown in Figure 4;

FIGURE 6 shows a side elevation of the carton shown in Figure 4;

FIGURE 7 shows a plan elevation of the relatively rigid panel shown in Figure 5;

FIGURE 8 shows a plan elevation of a carton blank according to the second embodiment of the invention;

FIGURE 9 shows a perspective view of a third embodiment of a wraparound type carton according to the invention;

FIGURE 10 shows the relatively rigid panel part of the carton shown in Figure 9;

FIGURE 11 shows a side elevation of the carton shown in Figure 9;

FIGURE 12 shows a plan elevation of the relatively rigid panel shown in Figure 10;

FIGURE 13 shows a plan elevation of the carbon blank shown in Figure 9;

FIGURE 14 shows a perspective elevation of a fourth embodiment of a wraparound type carton according to the invention;

FIGURE 15 shows the relatively rigid panel part of the carton shown in Figure 14;

FIGURE 16 shows a sectional side elevation of a relatively rigid panel part of a fifth embodiment of a carton according to the invention;

FIGURE 17 shows a plan view of a sixth embodiment of a relatively rigid panel according to the invention;

FIGURE 18 shows a schematic representation of a method of packaging a carton according to the sixth embodiment of the invention through various stages;

FIGURE 19 shows a perspective view of a seventh embodiment of the carton according to the invention;

FIGURE 20 shows a perspective view of the carton shown in Figure 19 during the article loading process; and

FIGURE 21 shows a plan view of an unformed carton blank used to form the carton shown in Figures 19 and 20.

Referring to Figures 1, 2 and 3 there is shown a first embodiment of a carton 10 according to the invention. The carton comprises blank 12 and a discrete structural reinforcing panel 14 in the form of a flat clip. Carton blank 12 is of a foldable wraparound type and comprises a plurality of paperboard panels hingably interconnected in series by means of fold lines. There is shown a bottom panel 20 hingably connected to side panel 22 by means of hinge line 32. Side panel 22 is hinged to inclined side panel 24 by means of fold line 34, whilst panel 24 is hinged to top panel 26 by means of hinge line 36. Top panel 26 is foldably connected to top flap 28 by means of fold line 38. Top panel 26 comprises three top tabs 40a, b and c which are cut from top flap 28 along cut line 41a, b and c respectively. Top panel 28 comprises article engaging rim 42a, b and c which can be effective once top flap 28 is displaced about hinge line 38. Top tab 40a, for example, abuts the top of the bottle B in the completed package whilst rim 42a engages the underside of part of the bottle cap as shown. Thus the end of blank 12 is secure to the packaged articles which in this case are bottles.

Similarly, base panel 20 is foldably connected to side panel 21 by means of hinge line 31, whilst side panel 21 is foldably connected to inclined side panel 23 by means of fold line 33. Inclined side panel 23 is foldably connected to top panel 25 by means of hinge line 35. Top panel 25 is foldably connected to top flap 27 by means of fold line 37. Top panel 25 further comprises top tabs 40d, e and f which are cut from top flap 27 along cut lines 41d, e and f respectively. There are thus created article engaging rims 42d, e and f in top flap 27.

The discrete structural reinforcing panel 14 is formed from a plastics material and is attached to six bottles B. The structural panel 14, sometimes herein referred to as a clip panel, comprises six article engaging means which in this case are apertures 18 and two handle apertures 16. It is envisaged that the clip panel could be secured in some manner to the paperboard so that the clip and paperboard blank are supplied together as a unit to a bottler.

The completed carton 10 is shown in Figure 1 in a perspective view where carton blank 12 is wrapped around an array of six articles in two rows of three.

Top flaps

27 and 28 have been folded downwardly out of coplanar alignment with

flaps

25 and 26 respectively. The bottle caps BC have been engaged by top flap article rims 42 and thus the

opposite ends

27 and 28 of the wraparound blank 12 are engaged with all six bottles. The use of discrete structural panel 14 and blank 12 together provides a completed carton which has sufficient rigidity to allow carrying of the filled articles, for example, by use of handle apertures 16 but yet may utilize a lower calliper of paperboard than otherwise would be required in the absence of the clip panel.

One of the advantages of carton 10 can be seen in Figure 3 where an array of two rows of three empty bottles is shown attached to structural clip panel 16. However, in this drawing the bottles are empty and structural panel 14 can be used simply to return the empty bottles. Apertures 18 in panel 14 are circular and of a suitable diameter to allow easy engagement of the panel with a bottle neck and similarly easy disengagement thereof. In this particular embodiment clip panel 14 is made of a semi-rigid material such as corrugated plastic for example.

The second embodiment of the invention is shown in Figures 4 to 8. Complete package carton 110 is shown in perspective view in figure 4 comprising blank 112 and clip panel 114. In this embodiment the carton is again showed containing an array of articles arranged in two rows of three. In this embodiment like features which are present in the first embodiment shown in figures 1, 2 and 3 are labelled with the same last two digits prefixed with the number 1.

Figure 8 shows a plan view of the blank 112 which has almost identical structure to blank 12 shown in figure 2. However, blank 112 incorporates additional features 150a to f which are panel flaps used to engage clip panel 114.

Clip panel 114 is shown in plan elevation in figure 7 where in addition to article apertures 118 there can be seen an additional feature, blank flap engaging apertures 119. Thus as shown in side elevation in figure 4 when blank 112 is wrapped around the articles and

top flaps

127 and 128 folded downwardly, in addition to article engaging rims 142 engaging the bottle caps BC, panel flaps 150 engage apertures 119 thus securing the blank 112 to clip panel 114 as well as to the articles. Structural clip panel 114 is again designed to enable bottles to be readily engaged and disengaged thereby facilitating its use to return empty bottles, as shown in figure 5.

In this particular embodiment additional structural rigidity is provided to the completed carton simply by engaging the blank with the discrete structural or clip panel 114. Thus, as can be seen, opposite ends of wraparound blank 112 are provided with both structural panel engaging means and article engaging means.

A third embodiment of the invention is shown in figure 9 to 13. Features of this embodiment which are similar to those shown in previous embodiments are labelled with the same last two numerals prefixed with the number 2. In this embodiment opposite ends of carton blank 212 comprise structural panel engaging means but the blank itself does not engage articles individually. Figure 9 shows a completed carton 210 comprising carton blank 212 and structural panel 214, again packaging an array of six bottles.

Figure 13 shows a plan elevation of carton blank 212 where panel flaps 250a to f are shown to be of a tab variety. One of which is shown enlarged in figure 13a. similarly blank flap engaging apertures 219 are a different shape to those shown in the pervious embodiment. Figure 12 shows a plan elevation of the discrete structural panel 214 comprising six blank flap engaging apertures 219 where one of these is shown enlarged in figure 12a. Aperture 219 is differently contoured from 119 to allow interlocking of tab flaps 251 which are incorporated in panel flaps 250 to securely attach the carton blank to carton structural panel 214. Figures 12a and 13a show an enlarged flap 250 and aperture 219 where two dimensions of each are labelled A and B, and C and D respectively. Dimension D of aperture 219 is relatively large to allow insertion of tab flaps 251, which have a maximum dimension B, to pass through them. Dimension A of flap 250 is less than dimension B thereof and dimension C of aperture 212 in order that mi-flap can be retained in the aperture in the engaged formation as shown on the right hand side of figure 11. The tab flaps 251 form flanges which securely anchor the carton blank by engaging the underside of panel 214. It is found that an effective way of doing this is to have dimension B less than dimension D so that the safety tabs 250 can pass through the clip panel aperture 219 and to have dimension B greater than dimension C in order that the flanges 251 effectively secure the blank in position.

A fourth embodiment of the invention is shown in figure 14 and 15 where components are represented by the common last two digits prefixed with the number 3. In this embodiment the completed carton 310 shown in figure 14 carries an array of bottles B in three rows of four.

Carton 310 comprises a single blank 312 and two

structural panels

314a and 314b. Opposite ends of carton blank 312 engage the bottle tops alone and are not secured to the clip panels 316. However, end panels 327 and 328 could be provided with clip panel engaging means whilst

panel

314a and 314b would require a reciprocal engaging means. In previous embodiments the clip panel comprises an aperture (19) which is an extension of article receiving apertures (18) but it is envisaged that blank receiving apertures (19) may be discrete from article apertures (18). It is possible also to have one end of the blank (12) attach to only the articles and the other end to attach only to the clip panel. It is envisaged that a variety of combination of article arrays, such as 2 x 2, 4 x 2 and 3 x 3, for example, can be used with any one clip panel (14). Also it is possible to have a number of such clip panels and article arrays wrapped and joined by one wraparound blank 312, for example, one blank may be used with three clip panels which each hold a 2 x 2 array of articles. Each clip panel 314a and b comprises a handle aperture 316a and b respectively. This embodiment has the advantage that a greater number of filled articles can be packaged by a single blank whereas the empty articles can be returned in groups of six using only one of the structural panels 314a or b.

Figure 16 shows a side elevation of a fifth embodiment of a structural panel 414 which, in common with all embodiments of the clip panel shown here, is specifically designed to be readily engageable and disengagable from articles. Article apertures 418 have a diameter just less than the maximum outer diameter of the bottle flange BF. By making structural panel 414 of a semi-rigid material so that it can offer structural rigidity to the carton they can also allow slight expansion of apertures 418 whilst they are passed on to and off the bottles B.

A sixth embodiment of a clip panel 514 according to the invention is shown in Figure 17. A schematic representation of a method of forming a completed carton 510 is shown in Figure 18. Clip panel 514 comprises central panel 563 hingably attached to

marginal panels

562 and 564 by

folds

561 and 560 respectively. In this embodiment adjacent article engaging apertures 518 are joined by article receiving aperture 517 which span central panel 563.

Referring to part A of Figure 18 there is shown an end section of clip panel 514 where dimensions X and Y are indicated as the width of aperture 517 and diameter of aperture 518 respectively. Part B of Figure 18 shows that

side panels

562 and 564 have been raised upwardly about

folds

561 and 560, and are configured to receive bottles B which are placed top-to-top in a horizontal position. Referring to part G there is shown two important dimensions of the bottle necks; diameter V is the outer diameter of the neck at bottle flange BF, and dimension W is the narrower diameter of the bottle neck below the bottle flange. Referring to part C of the Figure 18 clip panel 514 and bottles B are brought together and the bottle necks engage bottle apertures 518. It can be seen therefore that dimension X of the clip panel 514 must be greater than dimension V of the bottles in order to allow the bottles to pass upwardly into engagement with apertures 518. Dimension Y, however, must be less than dimension V in order that the bottles are retained by the clip panel, whilst dimension W must be less than dimension Y to allow the bottles to abut the rim of aperture 518.

Bottles B are then rotated until

panels

562, 563 and 564 are again coplanar as shown in part D. Thus an array of bottles can be attached to panel clip 514 without using force to push the bottle tops through a resilient but narrow aperture (18). A mechanically easier operation is effected by simply rotating the

panels

562 and 564 and engaging the bottles without the need for additional force against the clip panel. The array of bottles and clip panel can then be wrapped using blank 512. In this embodiment the ends of blank 512 engage the bottle tops thus securing the whole carton 510 together. However, as in the previously described embodiments it is possible for the blank to attach to the clip panel 514 as well as or instead of the bottles. Part F of Figure 18 shows how the bottles are kept firmly in place by the action of the end panels of blank 512.

Referring now to Figures 19 to 21 of the drawings a carton 610 is shown which comprises a carton blank 612 and a relatively rigid reinforcing panel 614 in the form of a flat clip. Blank 612 is made of paperboard or similar foldable material and forms a sleeve which is loaded by a known loading technique. Blank 612 shown in Figure 21, comprises two

side panels

622, 623, and two

end panels

624 and 625 where

panel

622 and 624 are opposite one another in the formed carton and all four panels form an enclosed casing which contains an array of articles in combination with top and bottom closures.

The side panels are hingably interconnected along fold lines. Side panel 622 is foldably connected to end panel 623 along fold line 652 whilst it is connected to end panel 625 along fold line 653. Side panel 624 is foldably connected to end panel 625 along hinge line 654.

Base panel portion

626 and 627 are foldably connected to

side panels

624 and 622 respectively along

fold lines

655 and 656 respectively. The blank is formed into a fully enclosed type carton by joining end panel 623 to side panel 624 which in this particular embodiment is effected by gluing tab 641 to side panel 624 thereby creating a rectangular sleeve-like structure representing the carton in the part-formed state shown in Figure 20.

The formation process shown schematically in FIGURE 20 shows the carton sleeve being drop loaded by lowering blank 612 onto a group of six bottles arranged in two parallel rows. In this case six bottles B are arranged in two rows of three bottles each, the whole group having been secured by the relatively rigid panel 614 which, in effect, is a reinforcing clip panel. It is possible to engage the tops of the bottles with the article engaging means 670 in

top panel portions

633 and 635 prior to closing the carton by folding

base panels

626 and 627 inwardly and attaching these panels together to form a secure base. For example,

panels

626 and 627 can be glued together or they may comprise cooperating locking means such as tabs and apertures for example.

Alternatively,

base panels

626 and 627 may be attached together to close one end of the sleeve prior to loading the carton with the bottles and attaching the clip panel.

The group of bottles would therefore be lowered from above the part formed carton as opposed to the drop-loading method shown in Figure 20. The clip panel 614 is made of a semi-rigid material such as corrugated plastics, for example which is relatively rigid as compared to the carton blank material such as paperboard. The clip panel is a discrete structural panel which helps to secure the bottles in an array by means of a plurality of article engaging means 606 which in this case are apertures. The clip panel 614 acts as a structural reinforcing element in the completed carton and it is found that lower calliper paperboard can be used in a carton of this design compared with a similar carton without such a reinforcing clip panel 614. The clip panel comprises a handle means 616 which in this case is formed by two apertures. Clip panel 614 can be used to carry an array of empty bottles without the need for a blank which is useful in returning empty bottles to a point of sale.

Carton blank 612 comprises inclined

side panels

628 and 630 and

upper end panels

629 and 631. These panels are foldably connected to the side and end panels previously described, as follows; inclined upper panel 628 is foldably connected to side panel 622 along hinge line 657; upper end panel 629 is foldably connected to end panel 623 along fold line 658; end panel 631 is foldably connected to end panel 625 along fold line 650; upper side panel 630 is foldably connected to side panel 624 along fold line 659. The

upper end panels

629 and 631 are foldably connected to

inclined side panel

628 and 630, respectively, by means of

web connectors

636, 637, 638 and 639.

The webs comprise two panel portions 'a' and 'b' which are hingably connected together by a generally central fold line 666. Web 638 comprises panels 'a' and 'b' and fold line 666; it is foldably connected to upper end panel 629 along fold line 667 and to inclined side panel 628 along fold line 665. Similarly, the other web connectors comprise two fold panels and hinge lines so that in the completed carton as shown in Figure 19 the

upper end panels

629 and 631 lie flush with the ends of

upper side panel

628 and 630. This is due to the fact that the webs are folded inwardly of the carton and thereby help retain

upper end panels

629 and 630 in position in the completed carton.

Inclined side panels

628 and 630 further comprise article engaging means 670 a to f which are cut into

marginal panel

633 and 635.

Marginal panels

633 and 635 are foldably connected to

panels

632 and 634 along

fold line

662 and 664 respectively.

Panels

632 and 634 are foldably connected to

inclined side panel

630 and 628 along

hinge lines

661 and 663 respectively. Cut lines 670 which engage the bottle tops in the embodiment shown creates bottle top tabs 640 'a' to 'f' as shown in Figure 19.

Claims

A carton accommodating a group of articles (B), such as bottles, comprises a sleeve-like part (12) having a plurality of foldably interconnected panels (20, 21, 22, 23, 24, 25, 26) and a relatively rigid plate (14) which secures said articles (B) together in a group characterised in that said relatively rigid plate (14) is stiff relative to the interconnected panels (20, 21, 22, 23, 24, 25, 26) and which provides, together with at least one of the sleeve panels, a top of the carton.
A carton as claimed in claim 1 wherein said one panel of the sleeve is attached to the articles.
A carton as claimed in claim 1 or claim 2 wherein said one panel (25, 26) of the sleeve is attached to the relatively rigid plate (14).
A carton as claimed in any of the previous claims wherein said relatively rigid (14) plate comprises article engaging means (18).
A carton according to any of the preceding claims wherein said carton, in at least one orientation provides an endless sleeve-like wrapper (12) about said group of articles (B).
A carton as claimed in claim 5 wherein opposite ends (25, 26) of the wraparound blank are adapted to secure the blank (12) to said relatively rigid plate (14).
A carton as claimed in claim 5 wherein opposite ends (40, 41) of the blank (12) are adapted to secure the blank to said articles (B).
A carton as claimed in claim 5 wherein one end (40, 41) of the blank is adapted to secure the blank (12) to the articles (B) and the other end (27, 28) of said blank is adapted to secure the blank to said relatively rigid plate (14).
A carton as claimed in claim 6 or claim 7 comprising a blank (12) adapted to be attached to both articles (B) and said relatively rigid plate (14) at said opposite ends of said blank (27, 28).
The combination of a carton for packaging a group of articles, such as bottles (B) which carton comprises foldable sheet material (12) in which said article group (R) is to be accommodated and a plate (14) which is stiff relative to the sheet material which is secured to the article group and which provides, together with at least one of the sleeve panels (25, 26), a top of the carton.