AUSTRALIA Patents Act 1990 COMPLETE SPECIFICATION Innovation Patent Applicant: AMCOR LIMITED Invention Title: A CARTON AND BLANK The following statement is a full description of this invention, including the best method for performing it known to me/us: P81494.AU PatLSet_Filng Appiation 2009-7-23.doc (M) -2 A CARTON AND BLANK FIELD OF THE PRESENT INVENTION 5 The present invention relates to a carton and a blank for the making the carton that is suitably for transporting goods such as confectionary items from one location to another, and for displaying the goods at a point of sale 10 such as on the shelves of a retail outlet. BACKGROUND OF THE INVENTION There are a number of "shelf ready" cartons that have the 15 dual purpose of transporting goods and when at a retail outlet, displaying the goods to consumers. Cartons that are capable of being used for dual purposes are, for example, sufficiently robust to withstand groups of the cartons being stacked one on top of the other, palletised, 20 and shrink wrapped ready of distribution via standard trucking networks. Once delivered to a retail outlet, the cartons may then be modified in some way to make the cartons suitable for displaying the goods while in the cartons to consumers. 25 An example of a shelf ready carton is a carton having a bottom tray in which the goods are display at a point of sale and a lid that is detachably connected by a removable tear strip to an upper edge of side walls of the tray. 30 One of the disadvantages of this type of shelf ready carton is that when the lid has been removed, the upper edge of side walls of the tray is serrated or jagged as a result of the tear strip being torn away. It is object of the present invention to provide an alternative shelf 35 ready carton. N.\Melboumc\Cascs\Patent\81000-81999\P8l494 AL\Specis\P8l494.22 July 09 doc 23/07/09 -3 SUMMARY OF THE INVENTION The present invention relates to a carton including: 5 i) a tray for displaying confectionary at a point of sale, the tray having a base and a side wall extending from the base that defines an opening of the tray; and 10 ii) a lid that fits the tray for transporting confectionary in the carton, the lid having a top wall and a side wall extending from the top wall that defines an opening of the 15 lid, wherein the lid and tray fit together with the side walls thereof overlapping, and the lid includes a frangible line of weakness at a spacing from the opening of the lid for 20 separating the tray. Suitably, the side wall of the lid includes an upper portion and a lower portion, the lower portion is attached to the side wall of the tray, and the upper portion is 25 separable from the lower portion by the frangible line of weakness. Suitably, the overlapping sections of the side walls are attached at fixing points that are spaced from the opening 30 of the lid and spaced from the opening of the tray. Suitably, the lid and tray fit together with at least part of the side wall of the tray or lid being disposed inside the opening of the other so that sections of the side 35 walls overlap, and wherein the overlapping sections are attached together at one or more fixing points and the lid includes a frangible line of weakness at a-spacing from N \Melboume\Cases\Patent\1000-81999\P8 1494.AUSpecis\P81494.22 July 09doc 23/07/09 -4 the opening of the lid for separating the tray. Suitably, the fixing points attached the lower section of the side wall of the lid to the side wall of the tray. 5 Suitably, the lower portion of the side wall can be detached from the side wall of the tray. Suitably, the frangible line of weakness extends about, or 10 over a portion of the side wall, and even more suitably around the lid. The frangible line of weakness may be a removable tear strip or a serrated line. In the situation in which the frangible line is a serrated 15 line, breaking the serrated line allows the overlapping sections of the side wall of the lid to be separated from the side wall of the tray. Suitably, the or each fixing point is located at a spacing 20 from the opening of the lid and at a spacing from the opening of the tray. Suitably, the spacings are at least 10mm from the openings of the lid or tray, and even more suitably at least 10 to 50mm from the openings of the lid or tray. 25 Suitably, the fixing points between the overlapping sections of the side walls are temporary or releasable fixing points. The fixing points may be provided by hot or cold adhesive, or adhesive tape. 30 Suitably, the side wall of the tray comprises a set of panels connected in a line side by side by fold lines, suitably frangible fold lines. 35 When the tray and lid are fitted together, suitably, the side wall of the tray is complete overlapped by the side wall of the lid, and even more suitably, the side wall of N \Melboum\Cases\Patent\81000-81999\P81494.AL\Spccis\P81494 22 July 09 doc 23/07/09 -5 the lid is located on the outside of the side wall of the tray. When the tray and lid are fitted together suitably, the 5 frangible line is positioned on a section of the side wall of the lid that is not overlapped by the side wall of the tray. According to the present invention there is provided a 10 pair of blanks for making a carton including: i) a first blank for making the tray of the carton, the first blank having a set of first panels connected side by side in a 15 line, and at least two flaps extending from a lower edge of the panels, the panels capable of being folded relative to each other to form a side wall defining an opening of the tray and the flaps capable 20 of being folded inwardly into an overlapping orientation to form the base of the lid; and ii) a second blank for making the lid of the 25 carton, the second blank having a set of the second panels connected side by side in a line, and at least two flaps extending from an upper edge of the panels, the panels capable of being folded relative to one 30 another to form a side wall defining an opening of the lid and the flaps capable of being folded inwardly into an overlapping orientation to form the top wall of the lid, 35 wherein the second blank includes a frangible line that extends across at least part of the second panels such that when the blanks are assembled and fitted N.\Melbourne\Cases\Patent\81000-81999\P8 1494 AU\Specis\PS1494 22 July 09.doc 23/07/09 together, the frangible line can be broken to separate the lid from the tray. The first and second blanks of the present invention may 5 also include, separately or a combination, any of the features of the carton described above. BRIEF DESCRIPTION OF THE DRAWINGS 10 The present invention will now be described with reference to the accompanying figures, of which: Figure 1 is a blank of a tray of a carton according to a preferred embodiment; Figure 2 is a blank of a lid of a carton 15 according to the preferred embodiment and for fitting with the tray having the blank of Figure 1; and Figure 3a a rear perspective view of an assembled carton comprising the tray and lid made from the blanks shown in Figures 1 and 2 respectively; 20 Figure 3b is the same view of the carton shown in Figure 3a with one panel of a side wall of the lid opened to reveal the tray inside the carton; and Figure 3c is a front perspective view of the carton shown in Figure 3a with two panels of a side wall of the lid 25 opened to reveal the tray inside the carton. DETAILED DESCRIPTION A preferred embodiment of the present invention will now 30 be described with reference to the accompanying Figures. Figure 1 illustrates a blank 9 of a tray comprising four panels 10a, 10b, 10c and 10d connected in a line side by side by fold lines 11 which are shown by the broken lines. 35 The four panels 10a and 10d form of the side wall of the tray when assembled. The four panels include a central small panel 10c that forms a small front wall having a cut N \Mclbourne\Cases\Patent\8 l000-81999\P81494 ALASpecis\P8 1 494.22 July 09.doc 23/07/09 -7 out 12 that denotes the front of the tray and allows hand access into the tray. Two larger panels 10b and 10d extend from opposite sides of the small panel 10c and progressively increase in height. The larger panels 10b 5 and 10d form opposed sides along the length of the tray. Extending from the larger panel 10b on the left hand side of the blank 9 is an end panel 10a corresponding in width to the small panel 10c that forms the end wall of the tray. Extending from the large panel 10d on the left hand 10 side of the blank 9 is a flap 13 that, when the panels 10a to 10d are assembled in a rectangular enclosure, is glued to the end wall panel 10a. The upper edge of the panels 10a to 10d defines an opening 15 of the tray. Extending from the bottom edge of each panel 10a to 10d is a series of flaps 14a, 14b, 14c and 14d, wherein when the panels 10a to 10d are assembled into the rectangular 20 enclosure, each flap 14a to 14d is able to be folded inwardly to from a base of the tray. Figure 2 illustrates a blank 22 of a lid comprising four panels 20a, 20b, 20c and 20d connected in a line side by 25 side by fold lines 21 that from the side wall of the lid. Preferably the fold lines 21 are frangible fold lines and are shown in Figure 2 by dashed lines. The four panels are each divided into upper and lower sections, identified by brackets 23 and 24 respectively, which are 30 interconnected by a serrated line 25 of weakness. The four panels 20a to 20d include a central small panel 20c that forms the front panel 20c of the lid that is overlapped by the front wall of the tray when assembled. Extending from opposite sides of the small front panel 20c 35 are two larger panels 20b and 20d that extend along the length of the tray. Extending from the large panel 20b on the left hand side of the blank is an end panel 20a which N- elborc\Cases\Patent\81000-81999\P81494.AASpecis\P81494 22 July 09doc 23/07/09 -8 is divided by the serrated line 25 into a narrow lower half and a wider upper half. A closure flap 26 extends from the large panel 20d on the 5 right hand side of the blank 22. The serrated line 25 that divides the panels 20a to 20d also extends through the closure flap 26 to define upper and lower sections of the closure flap 26. 10 Extending from the top edge of each panel is a top flap 27a to 27d, and when the panels 20a to 20d are folded to a form a rectangular enclosure, the top flaps 27a to 27d can be folded inwardly to form a top wall of the lid. The bottom edge of the side wall panels 20a to 20d defines an 15 opening of the lid. Figure 3a illustrates a rear perspective view of a carton made from the blanks shown in Figures 1 and 2 respectively. As described above, the tray is formed by 20 folding the side wall panels 10a to 10d to form a rectangular enclosure with the opening facing upwardly. Similarly, the lid is formed by the side wall panels 20a to 20d being folded into a rectangular enclosure which, 25 when in an upright orientation shown in Figures 3a to 3c, the opening faces downwardly. Once the carton has been delivered to a retail outlet, the carton is then opened by pealing away the lower section 24 30 of the side wall of the lid. As will be explained in the more detail, an advantage of the preferred embodiment is that the tray remains essentially intact and in good condition for using the tray to display goods on retail shelving. 35 As can been in Figure 3a, the upper section 23 of the closure flap 26 is fixed to the outside face of the end N \Melboune\Cases\Patcnti8 1000-8 1999\PS 1494 AU\Specis\P81494.22 July 09.doc 23/07/09 -9 side wall 20c, whereas the lower section 24 of the closure flap 26 may be unattached. When the lower section 24 of the closure flap 26 is unattached as shown in Figure 3a, it can be used as a pull tab for pulling away the lower 5 section 24 of side wall of the lid. The tray and lid are held together with the entire side wall of the tray being received by the opening of the lid. As a result, while the carton is in the form shown in 10 Figure 3a, the only part of the tray that is exposed is the base 27 of the tray. The tray and lid are held together by the overlapping sections of the side walls being fixed together at one or more one fixing points 30. The location of the fixing points 30 is shown by the 15 rectangular boxes on the blank in Figure 1. An adhesive suitably, a releasable adhesive such as double sided tape or a hot or cold adhesive is placed on the boxes. The lower section of the closure flap may be fixed to the 20 outside face of the rear side wall of the tray. Figure 3b illustrates the situation in which the closure flap 26 and the side wall panel 20d have has been pulled away and two fixing points 30 between the lower sections 25 of the side wall panel 20d of the tray and the side wall panel 10d of the tray have been broken. Moreover, the upper edge of the side wall of the tray is in no way compromised by the process of removing the lid 30 from the carton and retains a smooth cut finish. Figure 3c illustrates the situation in which the lower section 24 of the closure flap 26, the lower section of the side wall panel 20d and the lower section of the front 35 side panel 20c have been separated. In practice, this is readily achieved by pulling the lower sections of the side wall away, and the serrated line 25 associated with each N.\telboume\Cases\Patent\81000-81999\P81494.AU\Specis\P81494.22 July 09.doc 23/07/09 - 10 section breaking. By continuing to pull the remaining lower section of the lid away, the entire lid can be separated from the tray. 5 Those skilled in the art of the present invention will appreciate that many modification and variations many be made to the preferred embodiment without departing from the spirit and scope of the present invention. 10 For example, although the preferred embodiment shows the upper and lower sections of the side wall of the lid being interconnection by a serrated line, it is possible that the serrated line may be a removable tear strip. Removal of the tear strip will enable the tray and lid of the 15 carton to be separated. It is also possible that the carton may include other packaging elements, such as an external film of the shrink wrapping or internal supports that reinforce the carton. 20 N \Melbounc\Cases\Paten\8l000-81999\PS 494 ALSpecisP8 1494 22 July 09 doc 23/02/09