Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
  • B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
  • B65D5/28—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with extensions of sides permanently secured to adjacent sides, with sides permanently secured together by adhesive strips, or with sides held in place solely by rigidity of material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
  • B65D5/36—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper specially constructed to allow collapsing and re-erecting without disengagement of side or bottom connections
  • B65D5/3607—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper specially constructed to allow collapsing and re-erecting without disengagement of side or bottom connections formed by folding or erecting a single blank
  • B65D5/3635—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper specially constructed to allow collapsing and re-erecting without disengagement of side or bottom connections formed by folding or erecting a single blank by folding-up portions connected to a central panel from all sides to form a container body
  • B65D5/3678—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper specially constructed to allow collapsing and re-erecting without disengagement of side or bottom connections formed by folding or erecting a single blank by folding-up portions connected to a central panel from all sides to form a container body collapsed along median lines of two opposite sides and the central panel
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
  • B65D5/36—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper specially constructed to allow collapsing and re-erecting without disengagement of side or bottom connections
  • B65D5/3607—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper specially constructed to allow collapsing and re-erecting without disengagement of side or bottom connections formed by folding or erecting a single blank
  • B65D5/3685—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper specially constructed to allow collapsing and re-erecting without disengagement of side or bottom connections formed by folding or erecting a single blank by folding the blank to U-shape to form the base and opposite sides, the remaining sides being formed by extensions of these opposite sides
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
  • B65D5/42—Details of containers or of foldable or erectable container blanks
  • B65D5/64—Lids
  • B65D5/66—Hinged lids
  • B65D5/6626—Hinged lids formed by folding extensions of a side panel of a container body formed by erecting a "cross-like" blank
  • B65D5/6629—Hinged lids formed by folding extensions of a side panel of a container body formed by erecting a "cross-like" blank the lid being formed by two mating halves joined to opposite edges of the container body

Definitions

• This invention relates to collapsible packaging such as cartons and the like which are generally formed from blanks formed from a substantially rigid sheet material whereby the blanks are folded to form a carton.
• the cartons to which the invention relates are used in a wide variety of circumstances and one particular example of the application of the cartons relates to the forms of packaging used with take-away food items. It is a common characteristic of such cartons that they are not capable of accommodating liquid contents without the utilisation of a supplementary containment means. As a result, in the event of any spillage within the carton the liquid contents of the carton will leak and can create an undesirable circumstance for customers.
• the invention comprises a collapsible carton which is formed from a blank having a peripheral boundary edge and being continuous within the peripheral boundary edge, the carton when formed from the blank is capable of being folded between a folded flat condition and an erect condition whereby when in the erect condition the carton comprises: a floor panel; two opposed end panels; and two opposed side panels to define a generally rectangular prismatic shaped space, wherein the end panels and the side panels have substantially the same height, wherein the floor panel has a perimeter formed from a junction between the floor panel and each of the side panels and each of the end panels, the junction being liquid- tight, wherein the end panels each have a pair of first diagonal fold lines extending from the junction between the sides of the floor panel and the sides of the respective end panel and converging to terminate at a transverse central axis of the end panel, the pair of first diagonal fold lines being substantially perpendicular to each other, the end panels have a height being equal to or greater than the termination of the first diagonal fold lines, wherein the floor panel is provided
• the invention may comprise a collapsible carton which is formed from a blank having a peripheral boundary edge and being continuous within the peripheral boundary edge, the carton when formed from the blank is capable of being folded between a folded flat condition and an erect condition whereby when in the erect condition the carton comprises: a floor panel; two opposed end panels; and two opposed side panels to define a generally rectangular prismatic shaped space, wherein the end panels and the side panels have substantially the same height, wherein the floor panel has a perimeter formed from a junction between the single floor panel and each of the side panels and each of the end panels, the junction being liquid-tight, wherein the end panels each have a pair of first diagonal fold lines extending from the junction between the sides of the floor panel and the sides of the respective end panel and converging to terminate at a transverse central axis of the end panel, the pair of first diagonal fold lines being substantially perpendicular to each other, the end panels have a height being equal to or greater than the termination of the first diagonal fold lines, wherein the floor panel
• Another embodiment of the invention may be in the form of a collapsible carton comprising: a floor panel, two opposite first side panels, and two opposite second side panels, the panels together defining a generally rectangular prismatic shaped space, wherein the first side panels and the second side panels have substantially the same height, wherein the floor panel has a perimeter formed from a junction between the floor panel and each of the first and second side panels, the junction being liquid tight, wherein each of the first side panels and each of the second side panels is formed with an integral extension panel, the extension panels being of substantially the same height as its respective side panels, wherein in the erected carton an abutting edge of adjacent extension panels is defined by a closed fold line, the extension panels together forming a self locking closure being foldable to fully closed position where the extension panels of the second side panels fold over the space to close the space and lie substantially parallel to the floor panel, and the extension panels of the first side panels are foldable to lie substantially parallel to the and adjacent their respective first side panels on an outside of the space in a self locked position where
• Figure 1 is a plan view of a blank according to the first embodiment
• Figure 2 is an isometric view of a partially folded blank according to the first embodiment
• Figure 3 is an isometric view of an erected carton formed from the blank of the first embodiment with the extension panels open;
• Figure 4 is an isometric view of an erected carton formed from the blank of the first embodiment with the extension panels partially closed;
• Figure 5 is an isometric view of an erected carton formed from the blank of the first embodiment with the extension panels fully closed;
• Figure 6 is an isometric view of a folded carton formed of a blank according to the first embodiment
• Figure 7 is a plan view of a blank according to the second embodiment
• Figure 8 is an isometric view of an erected carton formed from a blank of the second embodiment with the extension panels open;
• Figure 9 is an isometric view of an erected carton formed from the blank of the second embodiment with the extension panels partially closed;
• Figure 10 is an isometric view of an erected carton formed from the blank of the second embodiment with the extension panels fully closed;
• Figure 11 is an isometric view of a folded carton formed from a blank of the second embodiment
• Figure 12 is a plan view of a blank according to the third embodiment
• Figure 13 is an isometric view of an erected carton formed using the blank of the third embodiment with the extension panels open;
• Figure 14 is an isometric view of an erected carton formed from the blank of the third embodiment with the extension panels partially closed;
• Figure 15 is an isometric view of an erected carton formed from the blank of the third embodiment with the extension panels fully closed;
• Figure 16 is an isometric view of a folded carton formed from the blank of the third embodiment
• Figure 17 is a plan view of a blank according to the fourth embodiment
• Figure 18 is an isometric view of an erected carton formed from a blank according to the fourth embodiment with the extension panels open;
• Figure 19 is an isometric view of an erected carton formed from the blank of the fourth embodiment with the extension panels partially closed;
• Figure 20 is an isometric view of an erected carton formed from the blank of the fourth embodiment with the extension panels fully closed;
• Figure 21 is an isometric view of a folded carton formed from a blank according to the fourth embodiment
• Figure 22 is a plan view of a blank according to the fifth embodiment.
• Figure 23 is an isometric view of an erected carton formed from a blank according to the fifth embodiment with the extension panels open;
• Figure 24 is an isometric view of an erected carton formed from the blank of the fifth embodiment with the extension panels partially closed;
• Figure 25 is an isometric view of an erected carton formed from the blank of the fifth embodiment with the extension panels fully closed;
• Figure 26 is an isometric view of a folded carton formed from a blank according to the fifth embodiment
• Figure 27 is a plan view of a blank according to the sixth embodiment.
• Figures 28a to 28g illustrate the assembly of a carton according to the sixth embodiment from the blank shown at Figure 27;
• Figures 29a to 29c illustrate a blank and two stages of folding the blank to form a seventh embodiment of the invention.
• Each of the embodiments is directed to a carton which is formed from a stiff sheet material such as cardboard where the sheet material is formed into a blank.
• the blank is continuous in that it contains no holes or slots internal of its peripheral edge.
• the blank can be folded to form a carton whereby when the carton has been formed it can be readily folded into a substantially flat condition and can be subsequently erected from the folded flat condition to provide a carton defining a generally rectangular prismatic shaped space with a flat closure or lid that lies parallel to a floor panel and with junctions between the floor panel and side panels and end panels of the carton being closed or sealed, as are junctions between the end panels and the side panels so that the carton is liquid tight along these junctions and thus resistant to the leakage of the contents.
• the formed carton may initially take the form of the folded carton which can then be erected into the carton when it is required.
• it may initially take the form of the erected carton to be then capable of being folded into a substantially flat condition for transportation and/or storage and subsequent unfolding into an erected carton when required.
• the closure or lid is formed as extension panels to each of the side panels and end panels where the extension panels have substantially the same height and adjacent extension panels are interconnected at the adjacent edges. Further the extension panels are formed integrally with respective side panels and end panels. The extension panels on each of the end panels are capable of folding about the junction with the respective end panel and about diagonal fold lines in the extension panel. This will result in the folded extension panel extending laterally from the respective end panel and as a further result the extension panels on the side panels will have been caused to have hinged about their junction with the respective side panel to overlie the space defined by the carton. It has been found that because of the construction of the carton where end panels, the side panels and the floor panel are all closed or fully joined (i.e.
• this bias force is believed to arise from tension within the panels created due to the junctions of the panels being closed or fully joined. That is, this construction in effect provides a "snap" lock or closing of the closure or lid.
• the first embodiment as shown at Figure 1, 2, 3, 4, 5 and 6 comprises a carton which is - in formed of a blank shown at Figure 1 where the carton has a floor panel 11, two end panels 12 and 13 and two side panels 14 and 15. Each of the end panels 12 and 13 and each of the side panels 14 and 15 are provided with an outer extension panel 16, 17, 18 and 19 respectively which when the carton is erected combine to provide the closure for the carton. Each of the end panels 12 and 13 and the side panels 14 and 15 are formed integrally with the floor panel 11 and are connected to the floor panel 11 by a fold line whereby they can be folded to be substantially perpendicular to the floor panel 11 which will bring their adjacent side edges into abutment with each other.
• the side edges of the side panels 14 and 15 and their extension panels 18 and 19 are provided with glue flaps 20 which are adapted to be able to overlie the edge portions of the inner faces of the adjacent end panels 12 and 13 and their respective extension panels 16 and 17 when the side panels and end panels are folded along their fold line with the floor panel 11 as described above.
• the glue flaps 20 may be rendered self adherent such that they will adhere to the edge portions of end panels 12 or 13 or may have an adhesive applied thereto prior to folding to effect such adhesion.
• the glue flaps 20 may be rendered self adherent such that they will adhere to the edge portions of end panels 12 or 13 or may have an adhesive applied thereto prior to folding to effect such adhesion.
• Each of the end panels 12 and 13 are provided with a pair of first diagonal fold lines 21 and 22 which extend from the junction between the adjacent edges of the end panel and the adjacent side panel and terminate at the central axis of the end panel whereby the diagonal fold lines 21 and 22 are perpendicular to each other.
• the floor panel 11 is provided with a first central fold line 23 which is centrally located and extends between the end panels 12 and 13.
• first central fold line 23 which is centrally located and extends between the end panels 12 and 13.
• second central fold line 24 which is co-linear in the folded blank shown in Figure 1 with the first central fold line of the floor panel 11.
• each of the extension panels 16 and 17 on the end panels 12 and 13 are provided with a pair of second diagonal fold lines 25 and 26 which are parallel to the first diagonal fold lines 21 and 22.
• the second diagonal fold lines 25 and 26 extend from the junction between the respective end panel and the extension panel to converge and terminate at the outer edge of the extension panel.
• FIG. 2 illustrates the carton partially erected where one end panel 12 and its extension panel 16 has been folded with the adjacent side panel 14 and its extension panel 18 to be perpendicular to the floor panel 11.
• the glue flaps 20 on the side panels 14 and 15 and their extension panels 18 and 19 are then bonded to the respective end panels 12 and 13 and their extension panels 16 and 17 to define a substantially cubic carton as shown at Figure 3 where the extension panels 16, 17, 18 and 19 are open.
• the floor panel 11 is bound by a perimeter P that comprises in the erected carton, edges or junctions between each of the end panels 12, 13 and the side panels 14, 15; and, the floor panel 11. Further, in the erected carton a first or lowermost edge of the end panels 12, 13 and side panels 14, 15 lie on the same plane as the floor panel 11, as is self evidence from Figures 2 - 6. Thus when the erected carton is sitting on a support having a planar surface such as a table, in its normal use position, the floor panel 11 will lay flat on and in face to face contact with the planar surface.
• glue flaps are used to fasten side or end panels to the floor panel 11. It may be more aesthetically pleasing to have the glue flaps glued to the inside of the floor panel 11. Indeed this may be the case for all glue flaps, so that from the exterior of a closed carton, no glue flaps are visible. From a view point of operation of the carton the glue flaps can be glued to the outside (ie underside) of the floor panel, or any other panel to which the glue flaps are to be glued.
• any glue flap to be glued to the floor panel 11 is glued to the outside (ie underside) of the floor panel, the floor panel will still lay flat on and be in face to face contact with the support surface on which it sits, with the first or lower most edges of the side and end panels remaining in the same plane as the floor panel.
• the carton can be readily folded to a substantially flat condition as shown at Figure 6. This is effected by causing the first central fold line 23 of the floor panel 11 to fold such that the first central fold line 23 moves inwardly.
• first diagonal fold lines 21 and 22 of each of the end panels to move inwardly to lie between the side panels 14 and 15 to overlie the portions of the floor panel 11 to each side of the first central fold line 23 and the portion of the second central fold line 24 between the junction of the first diagonal fold lines 21 and the junction between the respective end panel 12 and 13 and the floor panel 11 moves to overlie the first central fold line 23.
• portion of the second central fold line 24 between the junction of the first diagonal fold line 21 and the outer edge of the extension panel 16 and 17 folds such that it moves inwardly to lie between the side panels 14 and 15. This action brings the side panels together with the folded floor panel 11 and folded end panels 16 and 17 located there between as shown at Figure 6.
• the carton When the carton is in the erected condition as shown at Figure 3 the carton can be closed by causing the second diagonal fold lines to fold such that the inner faces of the extensions 17 and 16 end panels to each side of the second diagonal fold lines 25 and 26 fold inwardly about the second diagonal fold lines towards each other as shown at Figure 4.
• the extensions 17 and 16 of the end panels fold outward from each end of the carton which serves to bring the extensions 18 and 19 on the side panels 14 and 15 towards each other to overlie the space created by the carton between the floor panel, the side panels and the end panels.
• the folded extensions of the end panels can then be folded downwardly about the fold line defined between the junction of each end panel 12 and 13 and its respective extension 16 and 17 whereby the folded extension lies closely adjacent and substantially parallel to the outer face of the respective end panel as shown at Figure 5. Also the floor panel 11 and the junctions of the floor panel 11 and the end and side panels 12, 13, 14 and 15 lie on a common plane.
• the carton is of a generally similar form to that of the first embodiment with the exception that in the case of the side panels 214 and 215 the edges are not provided with glue flaps but rather the edges of the end panels 212 and 213 are interconnected with the adjacent edges of the adjacent side panels 214 and 215 by a web element 227 which has an outer edge which is disposed at substantially 45° to the edges of the respective end panel and side panel.
• the webs 227 are each provided with a third diagonal fold line 228 which extends from the junction between the adjacent edges of the adjacent end panel and side panel where the third diagonal fold line 228 bisects the angle between the adjacent end panel and side panel.
• the side edges of the extensions 216 and 217 of the end panels 212 and 213 are provided with glue flaps 220 which are adapted to be able to overlie the edge portions of the inner faces of the adjacent extension panels 218 and 219 of the side panels 214 and 215 when the side panels and end panels are folded along their fold line with the floor panel 211.
• the glue flaps 220 may be rendered self adherent such that they will adhere to the edge portions of extension panels 218 and 219 of the side panels 214 and 215 or may have an adhesive applied thereto prior to folding to effect such adhesion.
• each web 227 is folded about the junction between the respective end panel and side panel and the third diagonal fold line 228 is caused to fold and move inwardly such that the web is folded and lies within the carton adjacent the respective side wall, to be bonded thereto.
• the erected carton can then be folded into flat condition as shown at Figure 11 in the same manner as has been described in relation to the first embodiment.
• the erected carton can be closed in the same manner as has been described in relation to the first embodiment and as shown at Figures 9 and 10 with the same locking action as described in relation to the first embodiment.
• the third embodiment as shown at Figures 12 to 16 is of generally similar form to the first and second embodiment in terms of the configuration of the erected carton as shown at Figure 13.
• the difference in relation to the third embodiment relates to the configuration of the blank as shown at Figure 13 in that the end panels 412 and 413 are interconnected with one or the other side panel 418 or 419 respectively.
• the carton When the carton has been formed from the blank as shown at Figure 13 it can be folded and collapsed in a similar manner to that of the first and second embodiment as shown at Figure 16 and can be closed in a similar manner to that of the first and second embodiment as shown at Figures 14 and 15 with the same locking action as described in relation to the first embodiment.
• the fourth embodiment of Figures 17 to 21 comprises a carton which is of generally similar form to the first and second embodiment in terms of the configuration of the erected carton as shown at Figure 18.
• the carton is formed from a blank where each of the side panels 614 and 615 and their extensions supports a portion of each end panel and then- extensions which when the carton is erected combine to form the end panels.
• When the carton has been formed from the blank as shown at Figure 18 it can be folded and collapsed in a similar manner to that of the first, second and third embodiment as shown at Figure 21 and can be closed in a similar manner to that of the first and second embodiment as shown at Figures 19 and 20 with the same locking action as described in relation to the first embodiment.
• the fifth embodiment of Figures 22 to 26 is of a similar form to that of the third embodiment of Figures 17 to 21 with the exception that the adjacent edges of the portions of the end panels 712a, 712b, 713a and 713b and the floor panel 711 are interconnected by web members 727 having an edge which is at 45 degrees to the respective edges of the portion of the respective end panel and the floor panel.
• Each web 727 is provided with a third diagonal fold line 728 extending from the junction between the respective portion of the end panel and the floor panel and which bisects the angle therebetween, hi formation of the carton the web panels 727 are folded inwardly as a result of the third diagonal fold line folding inwardly into the interior of the carton whereby on the carton being erected the folded web 727 lies against the end panel and is glued thereto.
• the carton has been formed from the blank as shown at Figure 23 it can be folded and collapsed in a similar manner to that of the first, second, third and fourth embodiment as shown at Figure 26 and can be closed in a similar manner to that of the first and second embodiment as shown at Figures 24 and 25 with the same locking action as described in relation to the first embodiment.
• the sixth embodiment of Figures 27 and 28a to 28g is of very similar form to the first embodiment as shown at Figures 1 to 6 and the same reference numerals have been used in respect of corresponding features.
• the only difference is that the sixth embodiment includes a transverse fold line 30 formed in each of the end panels 12 and 13 and which extends from the point of intersection of the first diagonal fold lines 21 and 22 to one side of each end panel 12 and 13.
• the transverse fold line facilitates the folding of the blank to form a carton.
• the steps involved in forming the carton are illustrated at Figures 28a to 28g.
• the first step involves folding the glue flaps 20 provided on the side panel 15 and extension panel 19 which are remote from the transverse fold line 30 inwardly such that they overlie the respective panel 15 and 19 respectively as shown at Figure 28a.
• the second step involves folding each end panel 12 and 13 about the first diagonal folds lines 21 and 22 and simultaneously folding the end panel 12 and 13 about the transverse fold line 30 to cause the outer portion of each end panel to underlie the portion of the end panel defined by the first diagonals 21 and 22 as shown at Figure 28b.
• the third step involves folding the glue flaps 20 provided on the side panel 14 and extension panel 18 which are proximate the transverse fold line 30, inwardly such that they overlie the respective panel 14 and 18 respectively as shown at Figure 28c.
• the fourth step involves folding each end panel 12 and 13 about the junction with the floor panel 11 such that the end panels 12 and 13 in their entirety overlie the floor panel 11 as shown at Figure 28d.
• the fifth step involves folding the side panel 15 which is remote from the transverse fold line 30 about the junction with the floor panel 11 after the exposed faces of the glue flaps 20 of that side panel and its extension panel 19 have been rendered such that they will adhere to the opposed faces of the end panels 12 and 13 as shown at Figure 28e.
• the sixth step involves folding the blank as folded to that point in time about the central fold line 23 in the floor panel 11 as shown at Figure 28f.
• the final step involves folding the side panel 14 which is proximate the transverse fold line 30 about the junction with the floor panel 11 after the exposed faces of the glue flaps 20 of that side panel and its extension panel 18 have been rendered such that they will adhere to the opposed faces of the end panels 12 and 13 as shown at Figures 28g.
• the resultant folded blank will take the form as shown at Figure 6 in relation to the first embodiment and can be opened to form an erected carton as shown at Figure 3 in relation to the first embodiment and can be folded in the same manner as is described in regard to the first embodiment and as shown at Figures 4 and 5 with the same locking action as described in relation to the first embodiment.
• FIGS 29a - 29c depict a blank 800 and initial folding steps for constructing a seventh embodiment of the carton from the blank 800.
• the carton is reinforced by the provision of glue flaps that extend along the inside of side panels 14 and 15.
• the seventh embodiment of the carton made from the blank 800 shown in Figures 29a - 29c differs by relocation of the glue flaps 20 from the side extension panels 18 and 19 to the end extension panels 16 and 17 respectively, and relocation and reconfiguration of the glue flaps 20 on the side panels 14 and 15 to constitute new glue panels 820a and 820b that extend laterally from opposite sides of the end panels 12 and 13 respectively.
• the glue panels 820a and 820b are formed of a length approximately one half the length of the side panels 14 and 15.
• the glue panels 820a and 820b are glued to the inside of the side panels 14 and 15 with respective free ends F of the glue panels 820a and 820b meeting or otherwise being closely adjacent approximately mid way along the length of the side panels 14 and 15. This in effect provides the erected carton with side walls of double thickness and thus double strength.
• Each of the glue flaps 820a, 820b has a proximal portion 821 that tapers inwardly from opposite edges in an identical manner to the glue flaps 20, and a contiguous second portion 822 having a transverse dimension TA that is less than the transverse dimension TB (corresponding with the height of) the side panels 14 and 15.
• the end carton will, have an identical exterior appearance and operation to the carton shown in Figures 4 - 6.
• a similar effect may be provided by modifying the embodiment shown in Figure 12 by reconfiguring the glue flaps 420a and 420b as glue flaps 420ma and 420mb as shown in phantom in Figure 12.
• the glue flaps 420ma and 420 mb are each of substantially the same length of the side panels and 414 and 415.
• the panel 420ma is glued to an inside surface of the side panel 415 and glue flap 420mb is glued to the inside surface of side panel 414.
• the construction and operation of a carton from the modified blank is identical to that as described hereinbefore in relation to the embodiment shown in Figures 12 - 16.

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• 2005
  • 2005-10-31 US US11/261,464 patent/US20060032899A1/en not_active Abandoned
• 2006
  • 2006-10-31 WO PCT/AU2006/001628 patent/WO2007051238A1/en active Application Filing
  • 2006-10-31 EP EP06804453A patent/EP2029444A4/de not_active Withdrawn

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