WO2010096536A2 - Carton et structure de coin de découpe de carton - Google Patents

Carton et structure de coin de découpe de carton Download PDF

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Publication number
WO2010096536A2
WO2010096536A2 PCT/US2010/024555 US2010024555W WO2010096536A2 WO 2010096536 A2 WO2010096536 A2 WO 2010096536A2 US 2010024555 W US2010024555 W US 2010024555W WO 2010096536 A2 WO2010096536 A2 WO 2010096536A2
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WO
WIPO (PCT)
Prior art keywords
panel
carton
corner
panels
pillar
Prior art date
Application number
PCT/US2010/024555
Other languages
English (en)
Other versions
WO2010096536A3 (fr
Inventor
Iii William J. Bogdziewicz
James S. Shortt
Bradford J. Walling
Original Assignee
Meadwestvaco Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Meadwestvaco Corporation filed Critical Meadwestvaco Corporation
Publication of WO2010096536A2 publication Critical patent/WO2010096536A2/fr
Publication of WO2010096536A3 publication Critical patent/WO2010096536A3/fr

Links

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
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
    • B65D5/441—Reinforcements
    • B65D5/443—Integral reinforcements, e.g. folds, flaps
    • 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
    • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
    • B65D5/441—Reinforcements
    • B65D5/445—Reinforcements formed separately from the container
    • 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
    • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
    • B65D5/50—Internal supporting or protecting elements for contents
    • B65D5/5002—Integral elements for containers having tubular body walls
    • B65D5/5004—Integral elements for containers having tubular body walls formed as an extension of the end closures
    • 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
    • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
    • B65D5/50—Internal supporting or protecting elements for contents
    • B65D5/5028—Elements formed separately from the container body
    • B65D5/5033—Corner pads or corner posts

Definitions

  • the invention relates to a carton and carton blank of said carton for carrying a plurality of articles, for example flexible pouches or diapers, and one or more corner support structures or improving the compression strength of the carton.
  • a carton and carton blank of said carton for carrying a plurality of articles, for example flexible pouches or diapers, and one or more corner support structures or improving the compression strength of the carton.
  • An I-beam-like structure or product divide wall as disclosed in U.S. Patent Nos. 6,874,679 and 6,158,653 allows for added strength.
  • the '679 and '653 patents also teach the use of dual layers of board and corner structures. However, these structures use an increased amount of paperboard to achieve their strengthen results and are not suitable for all product packaging due to their use of the wall divider.
  • 7,000,824 and 4,056,223 also teaches a corner post structure to increase package strength, but through the use of a triangular corner post folded into place from an end-piece.
  • U.S. Patent Number 5,588,585 teaches the use of a Z-shape corner structure which is similar to the triangular corner post structure, but not aligned with the corner of the package.
  • the '585 patent teaches the use of multiple paperboard layers to provide additional carton strengthening.
  • the package design described herein covers a more sustainable easily erected (faster automation and requiring no adhesion), side load carton with improved compression strength to preserve the contents of the carton and preserve the shelf appearance of the carton.
  • the increased strength of the package allows for a greater number of product packages to be shipped on a pallet which reduces the number of truck trips necessary to deliver the products which also saves resources such as time and money.
  • the current invention improves sustainability by allowing for a lower grade paperboard to be used to achieve the same compression strength.
  • the carton designs described herein are also easily collapsed by simply opening the minor flaps and may be shipped flat.
  • one aspect of the invention covers a carton for holding a plurality of crushable items, comprising a one piece carton blank having one or more extended side end flaps, wherein said end-flaps or minor flaps (such terms to be use interchangeably throughout this application) are pre-scored and further wherein said minor flaps fold inward back on themselves to form a the second half of a square when aligned with the corner of the package, this providing a square pillar in the corner of the carton.
  • Another aspect of the invention covers a carton for holding a plurality of crushable items, comprising a one piece carton blank having one or more extended minor flaps, wherein the extended minor flaps are pre-scored and further wherein the said extended minor flaps fold inward back on themselves to form the second half of a square that aligns with a corner of the erected carton, thus providing a square pillar in the corner of the carton, and further the extended minor flap folding again back on itself to form a larger triangle with respect to the carton corner, wherein the hypotenuse of this triangle abuts the outer corner of the square pillar.
  • Another aspect of this invention covers the above describe square corner pillar structure wherein the square corner pillar is added by the use of reinforcing ribbon or cardboard strips added to the package to form the pillars rather than the use of the folded over minor flaps.
  • Another aspect of this invention covers the above describes the combined square and triangular corner pillar structure wherein the combined square and triangular corner pillar structure is added by the use of reinforcing ribbon or cardboard strips added to the package to form the pillars rather than the use of the folded over minor flaps.
  • Another aspect of the invention the package structures described above and comprising a re- closable tear opening.
  • Another aspect is the carton blank for square corner pillar structure.
  • Another aspect is the carton blank for the combined square and triangular corner pillar structure.
  • the corner post may have a longitudinally extending fold line such that when the carton is erected it bends away from the corner of the carton to form the square shape with the corner.
  • one or more blanks for forming a carton having at least one internal corner structure extending between walls that serve as top and bottom walls of the carton comprising: top and bottom panels for forming the walls that serve as top and bottom walls of the carton, side panels for forming adjacent side walls of the carton and at least one corner structure panel for forming the at least one internal corner structure, said at least one corner structure panel comprising at least two securing panels by which the corner structure is attachable to two side panels of the blank that form adjacent side walls and thereby a corner of the carton and said at least one corner structure panel comprising at least one pillar panel coupled between the at least two securing panels and foldable relative to said at least two securing panels for forming a tubular structure having at least a three-sided cross-section and said at least one pillar panel having a longitudinal length that is equal to or substantially equal to the length of the side wall panels of the blank such that the internal corner structure thereby formed is co-extens
  • the corner structure panel comprises one pillar panel hingedly connected to the at least two securing panels by two longitudinal fold lines and wherein the at least one internal corner structure formed therefrom is a tubular structure having a three-sided cross-section.
  • the corner structure panel comprises two pillar panels hingedly connected together by a fold line and wherein the at least one internal corner structure formed therefrom is a tubular structure having a four-sided cross-section.
  • the corner structure panel may further comprise a third pillar panel hingedly connected to one of said securing panels or hingedly connected to a further securing panel and wherein the at least one internal corner structure formed therefrom is a tubular structure having a ten-sided cross-section formed from two triangular sections and a square section.
  • each blank comprising four corner structure panels each hinged to a side wall forming panel of the blank along a fold line, each of said four corner structure panels comprising at least two pillar panels hingedly connected together by a fold line and wherein each of the four internal corner structures formed therefrom is a tubular structure having a four-sided cross-section.
  • each of said four corner structure panels comprising at least two pillar panels hingedly connected together by a fold line and wherein each of the four internal corner structures formed therefrom is a tubular structure having a four-sided cross-section.
  • each of said four corner structure panels comprising at least two pillar panels hingedly connected together by a fold line and the nine blanks comprising four further corner structure panels each comprising a third pillar panel hingedly connected to a third securing panel attachable to a side wall forming panel, wherein each of the four internal corner structures formed therefrom is a tubular structure having a nine-sided cross-section formed from two triangular sections and a square section.
  • Fig. 1 is a plan view of a blank for forming a carton having integrally formed pillar structures according to a first embodiment of the invention
  • Fig. 2 is a side and end perspective view showing a carton formed from the blank of Fig. 1;
  • Fig. 2A is a side and end perspective view showing the carton of Fig. 1, wherein the upper portion of the carton has been cutaway so that the internal pillar structures can be seen, additionally, a portion of the composite end wall of the carton is shown in a see-through or transparent state to show one of the internal corner structures;
  • Fig. 3 is a fragmentary view taken along the line HI-III in Fig. 1, showing one of the erected square-shape pillar structures with an end flap having been omitted;
  • Fig. 4 is a close-up cross-sectional view of a collapsed form of the square pillar structure of Fig.3 before construction of the carton is complete;
  • Fig. 5 shows a cross-sectional view of a partially erected pillar structure of Fig. 3
  • Fig. 6 is a plan view of a blank for forming a carton having integrally formed pillar structures according to a second embodiment of the invention
  • Fig. 7 is a side and end perspective view showing a carton formed from the blank of Fig.6 having combined square and triangular corner pillar structures, wherein the upper portion of the carton has been cutaway so that the internal pillar structures can be seen, additionally, part of the composite end wall of the carton is shown in a see-through or transparent state to show one of the internal corner structures;
  • Fig. 8 illustrates a cross-sectional view of one of the combined square and triangular corner structures as the end flap is being folded during construction (the adjacent top or bottom end flap is omitted to aid the clarity of the illustration);
  • Fig. 9 shows a cross-sectional view of a collapsed form of the combined square and triangular corner structure of Fig. 8;
  • Fig. 10 shows a cross-sectional view of an erected form of the combined square and triangular corner structure of Fig. 8;
  • Fig. 11 shows a partial top perspective view of the carton of Fig. 7, showing one of the combined triangular and square pillar structures (the top wall has been cutaway);
  • Fig. 12A shows a blank for forming a carton according to a third embodiment of the invention.
  • Fig. 12B shows a blank for forming a pillar structure for fitting within the carton formed from the blank of 12 A;
  • Fig. 13 shows the blank of Figure 12A with four of the blanks of Fig. 12B assembled thereon for forming pillar structures in each of the four corners of the carton;
  • Fig. 14 shows a cross-sectional view of a collapsed form of a portion of the blanks of Figures 12A and 12B for forming a two-piece combined triangular and square corner carton pillar before an end flap of the carton is attached;
  • Fig. 15 shows a cross-sectional view of a partially erected form of the two-piece combined triangular and square corner carton pillar of Fig. 14;
  • Fig. 16 shows a cross-sectional view of an erected form of the two-piece combined triangular and square corner carton pillar of Fig. 14;
  • Fig. 17A illustrates a cross-sectional view of an erected form of the two-piece square and triangular corner pillar structure of Fig. 14;
  • Fig. 17B shows a cross-sectional view of the two-parts for forming the internal pillar structure of Fig. 14;
  • Fig. 18 shows a cross-sectional view of a partially erected three-piece combined triangular and square corner carton pillar according to a fourth embodiment of the invention.
  • Fig. 19 shows a cross-sectional view of a fully erected form of the three-piece combined triangular and square corner carton pillar of Fig. 18;
  • Fig. 20 shows a cross-section of a collapsed form of the three-piece combined triangular and square corner carton pillar of Fig. 18;
  • Fig. 21 shows a top perspective view of an erected form of a carton formed from the blank of Fig. 13, wherein one end of the carton is closed and ready for product loading and showing the open top end flaps in their flat un-deployed form, with four, three-piece internal pillar structures disposed therein.
  • Blank 8 for forming a carton according to a first embodiment of the invention.
  • Blank 8 comprises a series of main panels for forming the main walls of a carton 10 illustrated in Figures 2 and 2 A.
  • the blank 8 comrpises: a bottom panel 44, first side panel 50, top panel 46, second side panel 50 and manufacturer's glue seam panel 82 hinged one to the next in series along fold lines 80.
  • Attached to the top and bottom of each of the main panels is an end flap for forming composite end walls of the carton, these include: bottom end flaps 14 hinged by fold lines 86 to each end of bottom panel 44; side end flaps 16 hinged by fold lines 48 to each end of the first and second side walls 50; and top end flaps 12 hinged by fold lines 88 to each end of the top panel 46.
  • the blank 8 of Figure 1 also comprises means for forming longitudinal support structures in the form of corner pillars.
  • the carton 10 is substantially square and therefore has four corner pillar structures 18, one in each of the four corners extending between the top and bottom panels 46, 44 of the carton 10.
  • An elongated portion or corner structure panel 56 is provided for forming each corner pillar structure 18.
  • the carton 10 is constructed from a continuous one- piece design of carton blank 8. In other embodiments of the invention, the carton has one or more square pillars 18.
  • Each elongated portion or corner structure panel 56 is integrally formed with the blank 8 and is connected thereto by means of a fold line 20 between the elongated portion or corner structure panel 56 and side end flap 16.
  • Each elongated portion or corner structure panel 56 comprises a number of sections for forming the structural walls of the internal corner pillars 18 and for securing those structure walls in place within the completed carton 10 so that the corner pillar structures 18 can act as a brace and support between the top panel 46 and bottom panel 44 of the carton 10.
  • the sections of the elongated portion or corner structure panel 56 include: a supporting panel 58, first pillar panel 60a, second pillar panel 60b and end panel 62.
  • first pillar panel 60a, second pillar panel 60b and end panel 62 are connected in series one to the next along fold lines 22, 24 and 26 respectively.
  • First pillar panel 60a and second pillar panel 60b are similarly sized such that the corner pillar structures constructed therefrom have a substantially square cross-section.
  • the elongated panel or corner structure panel 56 may be pre-scored, folded and pre-glued in order to assist in the automatic erection of the pillar structures 18 when the carton 10 is set-up from a flat- form blank 8.
  • the pre-folding and gluing sequence may take many and various formats and may deviate from that described below according to manufacturing requirements and the following sequence of pre-carton construction folding and gluing steps should not be construed as being necessary or limiting.
  • the fold lines 20, 22, 24 and 26 are pre-creased in order to facilitate the subsequent folding of the sections of the elongate panel or corner structure panel 56.
  • Adhesive such as hot-melt glue is then applied to the inside faces of the supporting panel 58 and end panel 62 (alternatively or additionally, adhesive may be applied, at appropriate positions, to the inside face 52 of end flap 16 and to the inside face 54 of the first side panel 50).
  • the elongate panel or corner structure panel 56 is then folded about fold line 20 so that the inside face of supporting panel 58 is placed into face-contacting relationship with the inside face 52 of end flap 16 and secured thereto.
  • the inside face of end panel 62 is brought into contact with the inside face 54 of first side panel 50 and adhered thereto.
  • the fold line 24 between the first pillar panel 60a and second pillar panel 60b is substantially aligned with fold line 48 that defines a corner of the carton between the first side panel 50 and the composite end wall that comprises end flap 16.
  • the first pillar panel 60a and second pillar panel 60b are not secured to either the inside face 52 of end flap 16 or to the inside face 54 of the first side panel 50. Similar construction steps are carried out (sequentially or simultaneously) with each of the other elongated panels 56.
  • a cross-sectional view of a pre-folded and glued corner structure panel 56 is shown in Figure 4. Exemplary positions of the adhesive used to secure supporting panel 58 to side end flap 16 and used to secure end panel 62 to side panel 50 are denoted by reference numeral 36.
  • the glue seam 82 may be folded about fold lines 80 such that its inside face is in contact with the inside face of second side panel 50.
  • Adhesive is then applied to the glue seam 82 and the blank 8 folded about fold line 80 between the first side panel 50 and the top panel 46 to bring the bottom panel 44 into face-contacting relationship with the glue-coated glue seam 82 such that the bottom panel 44 is secured to the second side panel 50 by means of the glue flap 82.
  • the pre-glued, flat form blank thereby created may be shipped in this condition to a converting plant whereat the main panels of the carton are opened to form a tubular structure open at each of its ends.
  • Products 34 to be contained by the carton 10 may then be loaded through one or both of the open ends of the carton 10.
  • the construction of the carton 10 is completed by forming the composite end walls from a top end flap 14, side end flaps 16 and bottom end flap 12.
  • the carton 10 is shown in its erected form in Figures 2 and 2 A, with top end-flap 12 and bottom end- flap 14 closed over minor end flaps 16.
  • the minor or side end flaps 16 are folded relative to their adjacent main side panel 50 to begin closing of that end of the carton, before the top and bottom end flaps 12, 14 are folded.
  • the corner pillar structure 18 is automatically set-up. This is illustrated in Figure 5 which shows a cross-sectional view of the folding of a side end flap 16.
  • Figure 3 illustrates a side or minor end flap 16 with its elongated portion or corner structure panel 56 folded inward to form the approximately square corner pillar structure 18.
  • Pre-scored fold lines 22, 24, and 26 form the hingedly connected square corner panels 60a, 60b which, in the carton's erected form, forms the approximately square corner pillar structure 18.
  • Fold line 24 optionally may be scored and pre-broken (as described above) to form the one or more approximately square corner pillar structures 18 when it is aligned across from carton corner 48.
  • FIG. 6 there are shown three further alternative embodiments of the present invention.
  • like numerals have, where possible, been used to denote like parts, albeit with the addition of the prefix "100", "200” or "300" to indicate that these features belong to the second, third and fourth embodiments respectively.
  • the second, third and fourth embodiments share many common features with the first embodiment and therefore only the differences from the embodiment illustrated in Figures 1 to 5 will be described in any greater detail.
  • a blank 108 according to a second embodiment of the invention is illustrated in Figure 6.
  • Figure 7 shows the erected single piece carton 110, formed from the blank 108 of Figure 6, with four combined square 118 and triangular 132 corner pillar structures that extend between the top and bottom panels 146, 144 of the carton at the corners 148.
  • the four corner pillar structures 118 each extend between the top and bottom panels 146, 144 of the carton 110 to provide longitudinal support and additional compression strength to the carton 110 for stacking and other purposes.
  • the four elongated portions or corner structure panels 156 of blank 108 are each extended compared to the corner structure panels 56 of the first embodiment and comprise additional panels 164 and 166.
  • Panel 164 is a third pillar panel and panel 166 is a securing panel, the two panels are hingedly connected together along a fold line 140.
  • the third pillar panel 164 and securing panel 166 are provided for forming and securing additional strengthening channels of the pillar structure 118.
  • the third pillar panel 164 is connected in series to the end panel 162 by a fold line 128, to form two triangular channels 132 (see Figures 7, 10 and 11).
  • the elongated panels or corner structure panels 156 are optionally constructed in like manner to the elongated panel 56 of the first illustrated embodiment, albeit, the third pillar panel 164 and securing panel 166 are preferably pre-folded about fold line 128 to lie on top of: the end panel 162, first and second pillar panels 160a, 160b and support panel 158.
  • the securing panel 166 is optionally attached to the supporting panel 158.
  • the flat- form three-ply arrangement of a corner pillar structure of this embodiment is illustrated in Figure 9.
  • Figure 9 shows the combined triangular 132 and square 118 corner pillar structure in its collapsed form.
  • light (relatively weaker) adhesive may be used so as to allow panel 168 and thus panel 164 as well to come loose from panels 158, 160 and 162.
  • Permanent adhesive 136 may be used to hold the supporting panel 158 and end panel 162 of the elongated portion 156 that form the square pillars in place.
  • Non-permanent adhesive 138 may be used to hold the triangular portion 132 of the corner pillar in place.
  • the non- permanent adhesive may be applied to either or both of securing panel 166 and supporting panel 158 as shown in Figure 8.
  • Figure 8 shows a side end flap 116 as it is being closed to form a composite end wall and shows the positions of the respective folded over portions (first and second pillar panels 160a, 160b, third pillar panel 166 and securing panel 164) that form the combined square and triangular corner structures.
  • first and second pillar panels 160a, 160b, third pillar panel 166 and securing panel 164 that form the combined square and triangular corner structures.
  • the square -pillar structure 118 is automatically erected as the end flap 116 is folded relative to the adjacent side panel 150.
  • the securing panel 166 is illustrated as being detached from the support panel 158 during construction of the carton 110 itself.
  • the securing panel 166 may be attached to the support panel 158 during construction of the carton 110 rather than as part of a pre-folding and gluing sequence when the blank 108 is formed into a part- formed flat- folded tubular structure. Either method or indeed other methods of constructions are viable. Securing panel 166 may remain free of connection with support panel 158.
  • the folding of the triangular corner piece or third pillar panel 164 in this manner and direction at fold line 128 may assist with the product loading process as the triangular wall 164 of the elongated portion 156 is pre-folded in the direction product 134 will be loaded, thus not interfering with the loading process and allowing the loaded product
  • third pillar panel 164 and/or securing panel 166 to hold the corner post structure in place by applying pressure to third pillar panel 164 and/or securing panel 166 and thus holding third pillar panel 164 against the corner defined by fold line 124 and forming the triangular corner post section 132.
  • FIGS 10 and 11 close-up views of a cross-section of only one of the combined square 118 and triangular 132 corner pillar structures are illustrated.
  • the minor or side end flaps 116 are illustrated with the integral elongated portion 156 folded inwardly, back on itself at fold line 120.
  • Fold line 120 may be pre-scored and/or pre-broken as described with respect to the first embodiment.
  • first and second pillar panels 160a, 160b As the carton 110 is erected and the side end flaps 116 are folded into place to form composite end wall structures, fold lines 122, 124 and 126 along with first and second pillar panels 160a, 160b, form the square corner pillar portion 118 of the strengthening corner structures.
  • the erection of the pillar structures occurs automatically with the folding of side end flap 116 relative to the adjacent side panel 150 because the first and second pillar panels 160a, 160b have a total length that is greater than the internal corner created by the relative folding of end flap 116 and side panel 150.
  • the first and second corner panels 160a, 160b are forced to "pop-out", away from corner 148 and thereby create the square-channel 118.
  • Fold lines 122, 124 and 126 are preferably pre-scored and/or broken such that they form the square corner pillar 118 structures easily and/or automatically.
  • the extension of the elongated portion 156 in the form of third pillar panel 164 and securing panel 166 is folded back on itself again, forming the triangular portion 132 of the corner pillar.
  • Figure 11 shows a cross-sectional view of one corner of a carton 110 having the combined triangular and square corner pillar structure of the second embodiment.
  • Product 134 (not shown) may be used to hold the elongated end- flap 156 in place by pressing against third pillar panel 164 and securing panel 166.
  • the tubular structure of the internal corner support has a ten-sided cross-sectional shape formed of two-triangular channels and one square channel.
  • FIG. 12A to 17B A third embodiment of the invention is illustrated in Figures 12A to 17B, wherein a f ⁇ ve- piece carton construction is utilized for forming a carton having four corner pillar struts 218, 232.
  • FIGs 12A and 12B two blanks are illustrated.
  • the first blank 208 of Figure 12A is for forming a carton 210 and comprises panels 244, 250, 246, 250, 214, 216, 212 for forming a fully enclosed carton of the end loading type.
  • the separate second blank 256/272 illustrated in Figure 12B is for forming the elongated panel 256 or corner structure panel 256 that forms a single corner pillar structure for insertion into a carton such as that formed from the blank 208 of Figure 12A.
  • one or more corner pillar structure blanks 272/256 may be used for forming one or more corner pillar structures.
  • four blanks 272/256 are used for forming four corner pillar structures, each one for placement in the corner of a carton formed from the blank 208 of Figure 12A. (Hence the completed carton is made from five pieces, one blank 208 and four blanks 256).
  • Each blank 272/256 comprises a series of fold, hinge or crease lines, 222, 224, 226, 228, 240 which define separate sections or panels of the blank 256 which form the supporting panel 258, first pillar panel 260a, second pillar panel 260b, end panel 262, third pillar panel 264 and securing panel 266.
  • Each corner pillar structure blank 272/256 is securable to the first blank 208 as is illustrated in Figure 13 where four such blanks 272/256 have been arranged, aligned and secured for forming corner pillar structures in each of the four corners 248 running between the top panel 246 and bottom panel 244.
  • each corner pillar structure blank 272/256 is securable by means of adhesive 236 applied to either or both of the side end flap 216 and supporting panel 258; and/or by means of adhesive 236 applied to either or both of the side panel 250 and end panel 262.
  • a cross-sectional view of the folded and secured corner pillar structure blank 272/256 is shown in Figure 14.
  • folding of the side end flap 216 causes automatic set-up of the corner pillar structure. This is illustrated in Figure 15.
  • a further cross-sectional view of the resultant corner pillar structure 218/232 is shown in Figure 16.
  • the carton 210 can be constructed from the blank 208 and then after formation of an open ended tubular structure, the folded or pre-creased corner pillar structure blanks
  • Figures 17A and 17B show close-up views of the combined square 218 and triangular corner structure 232.
  • Figure 17A shows an example of the structure as it appears when the corner pillar structure is added as a separate strip 230 to the pre-formed carton 210.
  • the strip 230 may be pre-scored along fold lines 222, 224, 226, 228 and 240.
  • Fold line 224 may be pre-broken as well such that when erected if forms the corner square pillar 218.
  • Figures 18 to 21 show a fourth embodiment of the invention showing an alternate construction of a nine-piece strip construction.
  • the square and triangular portions of the corner pillar structure are formed from separate corner structure panel blanks 347 and 374 respectively.
  • a separate blank 347 is provided for forming the square pillar structure 318 and comprises support panel 358, first pillar structure 360a, second pillar structure 360b and end panel 362.
  • These panels 358, 360a, 360b, 362 are hinged one to the next in series along fold lines 322, 324 and 326 and the folded blank 347 is securable to the inside corner of the carton by affixing support panel 358 to a main panel of the carton, in this illustrated embodiment, to top panel 346 and by affixing end panel 362 to an adjacent main panel, in this illustrated embodiment to side panel 350.
  • a separate strip of board 374 is added to form the triangular portion 332.
  • This separate strip of board 374 may be attached at point 376 as is illustrated in Figure 18 and comprises crease or pre-folding lines 328 and 340 so that separate panels: a securing panel 366; third pillar panel 364; and extension panel 364b, are defined.
  • the carton of this illustrated embodiment comprises four corner pillar structures, each having a square cross-section structure and two triangular cross-section structures formed from blanks 347 and 374 respectively.
  • the overall carton comprises nine blanks: one carton blank 308, four square corner pillar blanks 347 and four triangular corner pillar blanks 374.
  • the separate or corner structure panels or blanks 347 and 374 are preferably attached to the carton in blank form.
  • a carton blank similar to that of Figure 12A in conjunction with the blanks 347 and 374 is used to form a carton 310 of the top loading type illustrated in Figure 21.
  • To construct the carton 310 four square pillar corner structure blanks 347 are folded and secured as described above to a top or bottom panel 346, 344 and adjacent side panel 350 and four triangular pillar corner structure blanks 374 are folded and secured as described above to a top, bottom or side panel 346, 344, 350. (The nomenclature of "top panel 346" and "bottom panel 344" is used for consistency of terminology between embodiments.
  • the carton has been rotated such that in use, the carton has a composite end wall that serves as a base of the carton and an opposite composite end wall that serves as a top wall of the carton for stacking purposes.
  • the carton is loaded with product through the illustrated open end.
  • the corner reinforcing structures that provide additional compression strength run between these composite walls and are secured to what serve as side walls of the carton (346, 350,344, 350)).
  • any reference to hinged connection should not be construed as necessarily referring to a single fold line only; indeed it is envisaged that hinged connection can be formed from one or more of the following, a short slit, a frangible line or a fold line without departing from the scope of the invention.
  • a hinged connection is pre- marked, but in some instances, the folding of panels will cause hinged connections to naturally occur.
  • modifications of the length of panels 58, 60a, 60b and 62; 158, 160a, 160b, 162, 164 and 166; 258, 260a, 260b, 262, 264 and 266; 358, 360a, 360b, 362, 364b, 364 and 366 of the elongated portions 56, 156, 256 and blanks 347, 374 may be adjusted to that appropriate based on manufacturing preferences or carton 10, 110, 210, 310 dimensions.
  • the supporting panel 58, 158, 258 and/or end panel 62, 162, 262 may be removed such that the side end panel 16, 116, 216 is folded inward at fold-line 22, 122, 222 and fold line 26, 126, 226 would represent the end of the elongated panel 56, 156, 256.
  • the side end flap 16, 116, 216 may be smaller such that the first pillar panel 60a, 160a, 260a folds directly into position.
  • end-panel 62, 162, 262, 362 or any of the securing panels (58, 158, 258, 266, 358, 364b, 366) is only preferably attached to carton side 50, 150, 250,
  • one or more square corner pillar structures 18, 118, 218, 318 may be added to a carton similar or different to carton 10, 110, 210, 310 using one or more reinforcing ribbons or perforated board strips possessing fold lines similar to 22, 24 and 26; 122, 124, 126; 222, 224, 226; 322, 324, 326 and approximately aligning fold line 24, 124, 224, 324 across from corner 48, 148, 248, 380 and that these corner structures may be dimensioned, positioned and configured in an identical or symmetrical manner or may be dimensioned, positioned and configured in an asymmetric or non-similar manner.
  • the supporting panel and securing panel 358, 362 may be constructed to fold outward away from carton corner 348.
  • the preferred structure for the supporting panel and securing panel 358, 362 may be determined by manufacturing preferences.
  • the corner structure panels 374 and 347 for forming a triangular channel and square channel may be used individually or together. In the instance where corner structure panel 374 is used without the corner structure panel for forming the square pillar structure, the resulting corner pillar structure will have a single-triangular cross-section (in other words a tubular channel having three sides).
  • side 50 may possess additional end-flaps and the carton structure could be designed as a flat blank. Such a configuration may make using reinforcing ribbons more easily and effectively done. Such a design may also allow the carton to be wrapped around a product rather than end-loaded. It is to be understood that the carton design requiring only two ends of the carton to be formed during the loading process may increase effectiveness and product loading speed for end- loading products.
  • adhesive and adhesive locations may be used to permanently or temporarily hold portions of the corner pillar structures and/or triangular corner pillar structures in place. It is to be understood the locations for the attachments 36, 136, 236, 336 may be positioned at any particular point along elongated portion 56, 156, 256, 356 as appropriate. It is to be understood that adhesive 36, 136, 236 could be used to hold the corner pillar structure in place at one or more locations. It is to be understood that such an adhesive may hold the board in place permanently or temporarily or may be lightly applied such that the portion of the board could break free of the adhesive. It is to be understood that the adhesive may be heat or pressure sensitive.
  • attachment 36, 136, 236, 336 may releasably attach one or more portions of the elongated portion 56, 156, 256, 356 to the one or more locations on the inside 52 of the side end- flap 16, 116, 216, or side serving panel 346, 344 and/or to one or more locations on the inside 54 of the main carton side 50, 50, 250, 350 of the carton 10, 110, 210, 310.
  • the package could be shipped to a consumer (such as a manufacturer of products to be loaded into the carton) in this pre-glued form, such that the consumer would simply need to fold in the minor flaps 16, 116, 216, 316 and the top and bottom end flaps 12, 112, 212, 312 and 14, 314, 214, 314.
  • pressure from the product 34, 134, 234, 334 loaded into carton 10, 110, 210, 310 may provide sufficient force to keep the square corner pillar structure 18 and/or triangular pillar structure in place by the product itself after it is loaded into the carton.
  • fold line 24, 124, 224, 324 may be dulled or rounded or flattened or replaced by one or more additional panels or modified using broader score lines or other methods so that the sharp edge of the square corner pillar 18, 118, 218, 318 will not damage loaded product 34, 134, 234, 334 and/or so that where provided the third pillar panel 164, 364, 364 may abut against a flatter surface rather than against the edged corner defined by fold line 124, 224, 324.
  • the or each reinforcing structure for improving the compression strength of the carton may be shaped as a square, rectangle, triangle, trapezoid or other suitable cross- sectional shape.
  • the combined triangular 32, 132, 232, 332 or square 18, 118, 218, 318 corner pillar structure may be formed from one or more pieces of board attached to the carton 10, 110, 210, 310.
  • panels 264 and 266 may be attached to panels 258, 260a, 260b, and 262 by one or more attachment points. It is to be understood that panels 264 and 266 may be releasably attached. It is to be understood that whilst panels 266 and 264 are preferably attached to panels 258, 260, and 262 at fold line 228, that based on manufacturing preferences panel 266 may be removed.
  • the above cartons may be made out of a variety of paperboard calipers, including but not limited to up to 18 point, up to 24 point, up to 30 point or greater. If reinforcing strips are used any combination of paperboard caliper may be used between the carton and the reinforcing strip.
  • the reinforcing strip may have the same caliper as the board used to form the carton or it may have a greater caliper which may provide additional compression strength for the package.
  • the reinforcing strips may be attached prior to the cutting of the carton blank.
  • the reinforcing strips may be attached using adhesive, heat or pressure sensitive, permanent or temporary, or through the use of other type of attachment mechanisms as desired by manufacturing preferences. It is to be understood that using a higher caliper board reinforcing strip then the caliper board the carton is made of may allow one to use less board overall and while still increasing the strength of the package.
  • any of the cartons described in this application may be shipped flat.
  • the extended portion 58, 158 of the minor end flaps 16, 116 may be pre-folded into position.
  • the extended portion 58, 158 of the minor end flaps 16, 116 may be temporarily adhered to the carton 10, 110 or another portion of the minor end flap 16, 116 such that they lay flat until the carton is erected, at which time the corner pillar structure(s) may be formed by the folding of the minor end flaps 16, 116.
  • the carton may be formed from a combination of materials, or all from the same material. Any suitable foldable material may be used for forming the carton and the or each blank for forming the or each corner pillar structure.
  • the or each corner pillar structure may be integrally formed with the main carton blank or formed from one or more separate pieces.
  • the or each corner pillar structure of a carton may be of the same cross- sectional shape and construction or may be of different cross-sectional shape and/or constructions.
  • a carton may comprise four pillar structures, two integrally formed as part of the main carton blank and two formed as separate blanks; the integral corner structures may be similar to those of the second embodiment providing both a square and two triangular channels whereas the separate blanks may form single square pillar corner structures.
  • the reinforcing corner pillar structures of the present invention may be applied to a variety of carton structures and is not-limited in its application to the fully enclosed cartons illustrated.
  • the corner reinforcing structures may be used in conjunction with any of: a non-fully enclosed carton; a basket style carrier, a tray type carrier or a wrap around type carrier, as examples only.
  • a board having 18 point Caliper, board having 24 point Caliper and board having 30 point Caliper were used to form a carton with one of the following corner support structure designs at each of its four corners: the square corner pillar design, the triangular corner pillar design or the combined triangular square corner pillar design.
  • These packaging structures were then compared to a traditional carton made out of 30 point board without any corner supports. Each of the carton structures was tested to determine how much weight they could support before structural damage to the carton occurred. Additionally the aesthetics of the package were also observed after the maximum weight was identified to determine the amount of aesthetic damage to the structure.
  • the experimental process used a machine designed to show compression resistance.
  • the general process was a slow and gradual lowering of a top plate of the machine onto the formed carton.
  • the machine recorded the pressure exerted on the carton until the carton failed. This was typically shown by a sharp drop in the pressure and possible visible bending or creasing locations on the formed carton. Table 1 below shows the results of this study.
  • the carton made of 24 point board and having the combined triangular and square corner pillar structure demonstrated a 243% improvement over the 30 point carton having no corner pillar structures. Accordingly, the use of any of the disclosed corner pillar structures allows for a lower point board to be used to form a carton while still providing the support to protect the product contained within.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)

Abstract

L'invention porte sur un carton et une découpe de carton pour contenir une pluralité d'articles, comprenant un montant de coin tubulaire (56) formé à partir d'une extension d'une paroi latérale de carton (50). Le montant de coin est apte à se déplacer d'une position repliée à plat à une position dressée lorsque les volets mineurs (16) sont pliés vers l'intérieur et que le produit est chargé. Le montant de coin (56) est apte à offrir une résistance structurelle supplémentaire à l'emballage pour empêcher l'endommagement du produit et conserver l'aspect de l'emballage lorsqu'il est exposé à l'étalage.
PCT/US2010/024555 2009-02-23 2010-02-18 Carton et structure de coin de découpe de carton WO2010096536A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15472209P 2009-02-23 2009-02-23
US61/154,722 2009-02-23

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WO2010096536A2 true WO2010096536A2 (fr) 2010-08-26
WO2010096536A3 WO2010096536A3 (fr) 2010-11-18

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AR (1) AR077164A1 (fr)
WO (1) WO2010096536A2 (fr)

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JP2015187017A (ja) * 2014-03-14 2015-10-29 レンゴー株式会社 包装箱および製函装置
US9586739B2 (en) 2013-08-30 2017-03-07 Automatisation Et Renovation Du Conditionnement Dans Les Industries Laitieres Arcil Blank and packaging for pack of pots with connection/deformation sections
US10377523B2 (en) 2016-04-28 2019-08-13 Westrock Packaging Systems, Llc Carton and blank therefor
JP2019214416A (ja) * 2018-06-14 2019-12-19 レンゴー株式会社 包装箱

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US5588585A (en) 1996-03-15 1996-12-31 Inland Container Corporation Automatic set-up carton with corner posts
US6158653A (en) 1999-02-10 2000-12-12 Allen Kanter Container having improved stacking strength
US6874679B2 (en) 2001-10-12 2005-04-05 Innovative Packaging Designs, L.P. Container having sliding corner support
US7000824B2 (en) 2001-09-15 2006-02-21 Meadwestvaco Packaging Systems, Llc Carton and carton blank therefor
US7201714B2 (en) 2000-04-27 2007-04-10 Graphic Packaging International, Inc. Paperboard cartons with laminated reinforcing ribbons and method of printing same

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US4056223A (en) 1976-08-11 1977-11-01 Packaging Corporation Of America Foldable container and blank therefor
US5588585A (en) 1996-03-15 1996-12-31 Inland Container Corporation Automatic set-up carton with corner posts
US6158653A (en) 1999-02-10 2000-12-12 Allen Kanter Container having improved stacking strength
US7201714B2 (en) 2000-04-27 2007-04-10 Graphic Packaging International, Inc. Paperboard cartons with laminated reinforcing ribbons and method of printing same
US7000824B2 (en) 2001-09-15 2006-02-21 Meadwestvaco Packaging Systems, Llc Carton and carton blank therefor
US6874679B2 (en) 2001-10-12 2005-04-05 Innovative Packaging Designs, L.P. Container having sliding corner support

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9586739B2 (en) 2013-08-30 2017-03-07 Automatisation Et Renovation Du Conditionnement Dans Les Industries Laitieres Arcil Blank and packaging for pack of pots with connection/deformation sections
JP2015187017A (ja) * 2014-03-14 2015-10-29 レンゴー株式会社 包装箱および製函装置
CN106132835A (zh) * 2014-03-14 2016-11-16 联合株式会社 包装箱及制箱装置
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AU2014385940B2 (en) * 2014-03-14 2019-05-23 Rengo Co., Ltd. Packing box and box manufacturing apparatus
US10377523B2 (en) 2016-04-28 2019-08-13 Westrock Packaging Systems, Llc Carton and blank therefor
JP2019214416A (ja) * 2018-06-14 2019-12-19 レンゴー株式会社 包装箱
JP7125284B2 (ja) 2018-06-14 2022-08-24 レンゴー株式会社 包装箱

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WO2010096536A3 (fr) 2010-11-18
AR077164A1 (es) 2011-08-10

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