WO2021048153A1 - Carton blank and gable top carton produced from the same - Google Patents
Carton blank and gable top carton produced from the same Download PDFInfo
- Publication number
- WO2021048153A1 WO2021048153A1 PCT/EP2020/075120 EP2020075120W WO2021048153A1 WO 2021048153 A1 WO2021048153 A1 WO 2021048153A1 EP 2020075120 W EP2020075120 W EP 2020075120W WO 2021048153 A1 WO2021048153 A1 WO 2021048153A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- panel
- crease line
- sub
- carton
- diagonal
- Prior art date
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
- B65D5/02—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 or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
- B65D5/06—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 or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end-closing or contents-supporting elements formed by folding inwardly a wall extending from, and continuously around, an end of the tubular body
- B65D5/067—Gable-top containers
-
- 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
- B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
- B65D3/10—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by form of integral or permanently secured end closure
- B65D3/20—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by form of integral or permanently secured end closure with end portion of body adapted to be closed, by flattening or folding operations, e.g. formed with crease lines or 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
- B65D5/40—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 contain liquids
Definitions
- the present invention relates to a carton blank for producing a paper or paperboard-based packaging of a type commonly referred to as a gable top carton.
- the present invention also relates to a gable top carton produced from such a blank.
- Gable top cartons are commonly used to distribute pourable products, such as pourable bulk products and liquid consumable products, e.g. dairy products, such as milk, or fruit juices.
- Gable top cartons are produced from a laminate packaging material, which typically comprises a multi-ply paper or paperboard sheet on which is laminated one or a plurality of barrier layers for holding the liquid and/or prevent migration of air and flavour degrading substances through the paperboard.
- a barrier layer may typically comprise a polyethylene or an aluminium layer.
- the laminate packaging material is cut to form a substantially rectangular blank, which is folded, filled and sealed to form the carton.
- the blank comprises crease lines.
- a crease line is an embossed or impressed depression on one side of the paperboard with a corresponding raised ridge or welt on the other side forming a line along which the paperboard is structurally weakened and along which the paperboard will bend or fold in a controlled manner when pressure is applied.
- the comer positions i.e. the positions on the blank that form the comers of the carton when the blank is folded.
- special attention must be given to how the crease lines approach and connect to the comer positions. This is especially the case for cartons having a geometry that is more complex than the strict rectangular, block- shape geometry.
- the present invention relates to this problem and provides a carton blank having crease lines that has been found to provide well-defined top corners, especially the top corners of the front side of the carton.
- longitudinal will be used to designate a direction that is substantially parallel to side edges of the carton blank
- transverse will be used to designate a direction that is substantially parallel to top and bottom edges of the carton blank
- Diagonal will be used to designate a direction that forms an angel of substantially 45° to the bottom, side and top edges.
- the present invention relates to a carton blank comprising a plurality of panels configured to form a gable top carton by folding, wherein each of the plurality of panels comprises a wall section sub-panel and a top-closure sub panel, wherein the carton blank comprises a longitudinal crease line section defining a border between two neighbouring top-closure sub-panels, on which longitudinal crease line section is located a top corner position configured to form a top corner of the carton when the carton blank is folded, wherein the carton blank also comprises a transverse crease line forming a border between one of said neighbouring top-closure sub-panels and a neighbouring wall section sub-panel of the carton blank, wherein said border terminates at the top comer position, and wherein the carton blank further comprises a diagonal crease line arranged in said one of said neighbouring top-closure sub-panels, which diagonal crease line defines a folding line terminating at the top corner position.
- top corner position it may be difficult to convert the top corner position to a well-defined top corner in the folded carton. This may especially be the case when the border defined by the transverse crease line, when terminating at the top comer position, forms an obtuse angle with the longitudinal crease line section.
- a well-defined top comer position can be obtained by arranging the folding line defined by the diagonal crease line such that the folding line, when terminating at the top corner position, forms an angle of at 70°, more preferably at least 80°, and even more preferably at least 90°, e.g. 90°, with the longitudinal crease line section.
- the present invention provides a carton blank comprising a plurality of panels configured to form a gable top carton by folding, each of the plurality of panels comprising a wall section sub-panel and a top-closure sub-panel.
- the carton blank comprises a longitudinal crease line section defining a border between two neighbouring top-closure sub-panels, on which longitudinal crease line section is located a top corner position configured to form a top corner of the carton when the carton blank is folded.
- the carton blank also comprises a transverse crease line forming a border between one of said neighbouring top-closure sub-panels and a neighbouring wall section sub-panel of the carton blank, wherein said border terminates at the top corner position.
- the carton blank further comprises a diagonal crease line arranged in said one of said neighbouring top-closure sub-panels, which diagonal crease line defines a folding line terminating at the top corner position.
- the folding line When terminating at the top comer position, the folding line forms an angle of at least 70° with the longitudinal crease line section.
- the angle formed between the longitudinal crease line section and the folding line defined by diagonal crease line at the top comer position may be any one of: at least 80°, at least 90°, e.g. 90°.
- the present invention provides a carton blank configured to form a gable top carton by folding, the carton blank comprising a first, a second, a third, a fourth and a fifth panel, each comprising: a first sub-panel configured to form part of a bottom closure of the carton; a second sub-panel neighbouring the first sub-panel and configured to form a wall section of the carton; and a third sub-panel neighbouring the second sub-panel and configured to form part of a top closure of the carton, wherein the carton blank comprises: a first longitudinal crease line section defining a border between the third sub-panel of the first panel and the third sub-panel of the second panel; a second longitudinal crease line section defining a border between the third sub-panel of the second panel and the third sub-panel of the third panel; a third longitudinal crease line section defining a border between the third sub-panel of the third panel and the third sub-panel of the fourth panel; and a fourth longitudinal crease line section defining a border between
- Each of the angle formed between the first diagonal crease line of the second panel and the second longitudinal crease line section and the angle formed between the first diagonal crease line of the fourth panel and the third longitudinal crease line section may be any one of: at least 80°, at least 90° and 90°.
- the angle formed between the first diagonal crease line of the second panel and the second longitudinal crease line section may be equal to the angle formed between the first diagonal crease line of the fourth panel and the third longitudinal crease line section.
- the first diagonal crease line of the second panel may comprise a diagonal crease line section having a convex side facing the transverse crease line of the second panel
- the first diagonal crease line of the fourth panel may comprise a diagonal crease line section having a convex side facing the transverse crease line of the fourth panel.
- the second panel may comprise a transverse gable crease line defining a border between a top gusset sub-sub-panel and a gable seal sub-sub-panel of the third sub-panel of the second panel and the folding line defined by the first diagonal crease line of the second panel may extend between the transverse gable crease line of the second panel and the second top comer position.
- the fourth panel may comprise a transverse gable crease line defining a border between a top gusset sub-sub-panel and a gable seal sub-sub-panel of the third sub-panel of the fourth panel, and the folding line defined by the first diagonal crease line of the fourth panel may extend between the transverse gable crease line of the fourth panel and the third top corner position.
- the border defined by the transverse crease line of the second panel, when terminating at the second top corner position, may form an obtuse angle with the second longitudinal crease line section
- the border defined by the transverse crease line of the fourth panel, when terminating at the third top comer position may form an obtuse angle with the third longitudinal crease line section
- the transvers crease line of the second panel may terminate at the second top corner position in an arc having a first radius of curvature
- the transvers crease line of the fourth panel may terminate at the third top corner position in an arc having said first radius of curvature
- the first diagonal crease line of the second panel may terminate at the second top comer position in an arc having a second radius of curvature
- the first diagonal crease line of the fourth panel may terminate at the third top corner position in an arc having said second radius of curvature
- said second radius of curvature may be less than said first radius of curvature.
- the second radius of curvature may be any one of: 20%-80% of the first radius of curvature; 40%-60% of the first radius of curvature; and 45%-55% of the first radius of curvature.
- Said arc of the first diagonal crease line of the second panel may have a centre of curvature located on said second longitudinal crease line section
- said arc of the first diagonal crease line of the fourth panel may have a centre of curvature located on said third longitudinal crease line section.
- Said arc of the transverse crease line of the second panel may have a centre of curvature located in the second panel at a lateral distance from said second longitudinal crease line section
- said arc of the transverse crease line of the fourth panel may have a centre of curvature located in the fourth panel at a lateral distance from said third longitudinal crease line section, wherein said lateral distance may be within the range of 40% to 90% of the first radius of curvature.
- the second panel may comprise a second diagonal crease line defining a folding line in the third sub-panel terminating at the first top corner position and forming an angle of at least 70° with the first longitudinal crease line section
- the fourth panel may comprise a second diagonal crease line defining a folding line in the third sub-panel terminating at the fourth top corner position and forming an angle of at least 70 “with the fourth longitudinal crease line section.
- the second diagonal crease line of the second panel may comprise a diagonal crease line section having a convex side facing the transverse crease line of the second panel
- the second diagonal crease line of the fourth panel may comprise a diagonal crease line section having a convex side facing the transverse crease line of the fourth panel.
- the angle formed between the second diagonal crease line of the second panel and the first longitudinal crease line section may be equal to the angle formed between the second diagonal crease line of the fourth panel and the fourth longitudinal crease line section.
- Fig. l is a plane view of an embodiment of a carton blank according to the first aspect of the invention.
- Figs. 2a, 2b, 3a and 3b are detail views of the carton blank according to Fig. 1.
- Figs. 4 and 5 are detail views of a carton blank according to one embodiment of the invention.
- Figs. 7 and 8 are side views of the carton according to Fig. 6.
- Figs. 9-11 are plane views of further embodiments of carton blanks according to the invention.
- Figs. 12a and 12b are detailed plane views of a further embodiment of carton blank according to the invention.
- Figs. 13a and 13b are detailed plane views of yet a further embodiment of carton blank according to the invention.
- FIG. 1 An embodiment of a carton blank 10 according to the invention is shown in Fig. 1.
- the blank 10 is shown with the surface configured to form the outside surface of the carton facing the viewer.
- the blank 10 is made from a suitable package material, such as a multi -ply paper or paperboard sheet on which is laminated one or a plurality of barrier layers for holding content, e.g. a liquid, and/or prevent migration of air and flavour degrading substances through the sheet. At least portions of the blank may be coated with a layer of thermoplastic material allowing a carton formed from the blank to be sealed by plastic welding.
- a suitable package material such as a multi -ply paper or paperboard sheet on which is laminated one or a plurality of barrier layers for holding content, e.g. a liquid, and/or prevent migration of air and flavour degrading substances through the sheet.
- At least portions of the blank may be coated with a layer of thermoplastic material allowing a carton formed from the blank to be sealed by plastic welding.
- the blank 10 is substantially rectangular and comprises a first, bottom edge 11, a second, top edge 12 and parallel, third and fourth, side edges 13, 14.
- the side edges 13 and 14 are rectilinear, whereas the top and bottom edges 11 and 12 have an irregular shape.
- the blank 10 also comprises a plurality of crease lines defining folding lines along which the blank 10 is configured to be folded when formed into the carton.
- “longitudinal” will be used to designate a direction that is substantially parallel to the side edges 13 and 14, i.e. substantially vertical in Fig. 1
- “transverse” will be used to designate a direction that is substantially parallel to the top and bottom edges 11 and 12, i.e. substantially horizontal in Fig. 1.
- “Diagonal” will be used to designate a direction that is at an angel of substantially 45° to the bottom, side and top edges 11-14.
- the blank 10 comprises five panels, P1-P5, separated by longitudinal crease lines 20, 21, 22 and 23 defining folding lines extending across the panel 10 from the bottom edge 11 to the top edge 12.
- the longitudinal crease lines 20, 21, 22 and 23 divide the bottom and top edges 11, 12 into sub-sections 11a, l ib, 11c, l id, l ie and 12a, 12b, 12c, 12d, 12e, respectively.
- the wall section sub-panel 120 of the first panel PI is configured to form a back wall of the carton and the wall section sub-panel 320 of the third panel P3 a front wall.
- the wall sections 220 and 420 of the second and fourth panels P2, P4 are configured to form side walls of the carton.
- the fifth panel P5 is configured to be attached to an inside surface of the first panel PI adjacent the side edge 13 when the carton is formed.
- the blank 100 displays positions TCI, TC2, TC3, TC4, BC1, BC2, BC3 and BC4 defining top and bottom corners of the carton when formed (see Figs. 6-8).
- Each longitudinal crease line 20, 21, 22 and 23 comprises a first longitudinal crease line section 20a, 21a, 22a, 23a extending between the bottom edge 11 and the bottom corner position BC1, BC2, BC3, and BC4, respectively.
- Each longitudinal crease line 20, 21, 22 and 23 also comprises a second longitudinal crease line section 20b, 21b, 22b, 23b extending between the bottom comer position BC1, BC2, BC3, BC4 and the top comer position TCI, TC2, TC3, and TC4, respectively, and a third longitudinal crease line section 20c, 21c, 22c, 23c extending between the top comer position TCI, TC2, TC3, TC4 and the top edge 12.
- the longitudinal crease lines 20, 21, 22 and 23 are continuous, i.e.
- the longitudinal crease lines 20, 21, 22, 23 need not be continuous or rectilinear, and/or the longitudinal crease line sections 20b, 21b, 22b, 23b may be arranged to accommodate comer panel sections between the wall section sub-panel 120, 220, 320, 420 and 520.
- the first panel PI comprises a bottom crease line 140 extending from the position BC1 to a position on the side edge 13 level toBCl.
- the bottom crease line 140 extends transversely across the panel PI in a direction which is orthogonal to the side edge 13 and to the longitudinal crease line 20.
- the bottom crease line 140 forms a border between the bottom-closure sub-panel 110 and the wall section sub-panel 120 of the panel.
- the first panel PI comprises a top crease line 150 extending from the position TCI to a position on the side edge 13 that is level or substantially level to TCI.
- the top crease line 150 extends transversely across the panel PI in a direction which is substantially orthogonal to the side edge 13 and to the longitudinal crease line 20, i.e. parallel to the bottom crease line 140.
- the top crease line 150 need not be parallel to the bottom crease line 140.
- the top crease line 150 forms a border between the wall section sub-panel 120 and the top-closure sub-panel 130.
- the bottom-closure sub-panel 110 comprises a flap 111 which assists in securing a safe closure of the bottom of the carton.
- flap 111 which assists in securing a safe closure of the bottom of the carton.
- the top-closure sub-panel 130 comprises a top-fin crease line 131 extending transversely across the panel PI parallel to the top crease line 150, i.e. in a direction which is orthogonal to the side edge 13 and to the longitudinal crease line 20.
- the top-fin crease line 131 defines a folding line forming a border between a roof sub-sub-panel 132 and a top-fin sub - sub - panel 133 of the top-closure sub-panel 130.
- the top edge sub section 12a is slightly convex, thus providing a curved, convex top fin in the carton folded from the blank 10.
- the top edge sub-section 12a may be rectilinear, concave or any other shape.
- the panel PI comprises disposal crease lines 160a, 160b extending transversally across the lower part of the wall section sub-panel 120.
- disposal crease lines are not activated when the carton is folded from the blank 10 during filling but are activated by a user during disposal of the carton when empty.
- disposal crease lines are configured to facilitate folding the empty carton to a flat shape, thus ensuring space efficient disposal.
- the second panel P2 comprises a bottom crease line 240 extending transversely across the panel P2 between positions BC1 and BC2.
- BC1 and BC2 are level, i.e. arranged along a line which is orthogonal to the longitudinal crease lines 20 and 21. Consequently, the bottom crease line 240 extends transversely across the panel P2 in a direction which is orthogonal to the longitudinal crease lines 20 and 21.
- the bottom crease line 240 forms a border between the bottom-closure sub -panel 210 and the wall section sub-panel 220.
- the second panel P2 further comprises a transverse top crease line 250 extending across the panel P2 between positions TCI and TC2 and defining a folding line forming a border between the wall section sub-panel 220 and the top closure sub-panel 230.
- the top crease line 250 is not rectilinear as the corresponding crease line 150 of panel PI but curved. Starting from the position TCI, the top crease line 250 initially extends generally orthogonally from the longitudinal crease line 20 and then curves towards the bottom edge 11 of the carton blank.
- the top crease line 250 transitions from bending downwards to bending upwards, terminating at the position TC2 in an arc 250’ having a radius of curvature R1 and a convex side facing the second sub -panel 220, which arc 250’ forms an obtuse angle a with the longitudinal crease line section 21c, i.e. an angle within the interval of 90° to 180° (see Figs. 2a and 3a). Consequently, the transverse top crease line 250 comprises a first section 250a having a convex side facing the top edge 12, i.e. upwards, and a second section 250b having a convex side facing the bottom edge 11, i.e. downwards, which first section 250a connects to the longitudinal crease line 20 at a right angle, and which second section 250b connects to the longitudinal crease line 21 upwardly inclining.
- the bottom-closure sub-panel 210 comprises a first diagonal crease line 211 extending between position BC1 and a position adjacent the bottom edge sub-section lib midway between the longitudinal crease lines 20 and 21.
- the bottom-closure sub-panel 210 also comprises a second diagonal crease line 212 extending between position BC2 and said position adjacent the bottom edge sub-section 1 lb midway between longitudinal crease lines 20 and 21, thus intercepting the first diagonal crease line 211 in this position.
- the diagonal crease lines 211 and 212 form folding lines that assist folding of the bottom-closure sub- panel 210 when the bottom closure of the carton is formed.
- the top-closure sub-panel 230 comprises a transverse gable crease line 231 extending transversely across the panel P2 defining a folding line forming a border between a top gusset sub-sub-panel 232 and a gable seal sub-sub-panel 233 of the top-closure sub-panel 230.
- the top gusset sub-sub-panel 232 comprises a first diagonal crease line 234 extending between position TCI and a position on the transverse gable crease line 231 midway between the longitudinal crease lines 20 and 21.
- the top gusset sub-sub-panel 232 also comprises a second diagonal crease line 235 extending between position TC2 and said position on the transverse gable crease line 231 midway between the longitudinal crease lines 20 and 21, thus intercepting the first diagonal crease line 234 in this position.
- the first diagonal crease line 234 is rectilinear.
- the second diagonal crease line 235 is curved and comprises a first section 235a having a convex side facing the longitudinal crease line section 21c and a second section 235b having a concave side facing the longitudinal crease line section 21c.
- the second diagonal crease line 235 transitions from said first section 235a to said second section 235b adjacent the position TC2, terminating in the position TC2 in an arc 235’ having a convex side facing the transverse crease line 250 and a radius of curvature R2 (see Figs. 2a and 3a).
- the gable seal sub-sub-panel 233 comprises a longitudinal gable crease line 236 extending between the transverse gable crease line 231 and the top edge sub-section 12b parallel to and equidistant the longitudinal crease lines 20 and 21.
- the longitudinal gable crease line 236 extends vertically from the position on the transverse gable crease line 231 where the diagonal crease lines 234 and 235 intercept each other.
- the second panel P2 comprises disposal crease lines 260a-260e which are configured to be activated by a user during disposal of the carton when empty.
- the third panel P3 comprises a bottom crease line 340 extending transversely across the panel P3 between positions BC2 and BC3.
- BC2 and BC3 are level, i.e. arranged along a line which is orthogonal to the longitudinal crease lines 21 and 22. Consequently, the bottom crease line 340 extends transversely across the panel P3 in a direction which is orthogonal to the longitudinal crease lines 21 and 22.
- the bottom crease line 340 defines a folding line forming form a border between the bottom-closure sub-panel 310 and the wall section sub- panel 320 of the panel P3.
- the third panel P3 is free from a crease line defining a folding line forming a border between the wall section sub -panel 320 and the top-closure sub-panel 330. Therefore, in the carton resulting from folding the blank 10 there is no distinct border between the wall section sub-panel 320 and the top-closure sub -panel 330. Instead, the wall section sub-panel 320 and the top-closure sub-panel 330 will continuously transition into each other and merge in a border region.
- the top-closure sub-panel 330 comprises a top-fin crease line 331 extending transversely across the panel P3 in a direction which is orthogonal to the longitudinal crease lines 21 and
- the top-fin crease line 331 defines a folding line forming a border between a roof sub-sub-panel 332 and a top-fin sub-sub-panel 333 of the top-closure panel 330.
- the roof sub-sub-panel 332 is provided with a circular through- going opening 334 for receiving a pour spout fitment.
- the top edge sub section 12c is slightly convex, thus providing a curved, convex top fin in the carton folded from the blank 10.
- the fourth panel P4 is essentially a mirror image of the second panel P2. Consequently, the fourth panel P4 comprises a bottom crease line 440 extending transversely across the panel P4 between positions BC3 and BC4.
- BC3 and BC4 are level, i.e. arranged along a line which is orthogonal to the longitudinal crease lines 22 and 23. Consequently, the bottom crease line 440 extends transversely across the panel P4 in a direction which is orthogonal to the longitudinal crease lines 22 and 23.
- the bottom crease line 440 forms a border between the bottom-closure sub-panel 410 and the wall section sub-panel 420.
- the fourth panel P4 further comprises a transverse top crease line 450 extending across the panel P4 between positions TC3 and TC4 and defining a folding line forming a border between the wall section sub-panel 420 and the top closure sub-panel 430.
- the top crease line 450 is curved in the same manner as the top crease line 250 of panel P2 Consequently, starting from the position TC4, the top crease line 450 initially extends generally orthogonally from the longitudinal crease line 23 and then curves towards the bottom edge 11 of the carton blank. Approximately midway between the longitudinal crease lines 22 and
- the top crease line 450 transitions from bending downwards to bending upwards, terminating at the position TC3 in an arc 450’ having a radius of curvature R1 and a convex side facing the second sub -panel 420, which arc 450’ forms an obtuse angle a with the longitudinal crease line section 22c (see Figs. 2b and 3b). Consequently, the transverse top crease line 450 comprises a first section 450a having a convex side facing the top edge 12, i.e. upwards, and a second section 450b having a convex side facing the bottom edge 11, i.e.
- the botom-closure sub-panel 410 comprises a first diagonal crease line 411 extending between position BC3 and a position adjacent the bottom edge sub-section lid midway between the longitudinal crease lines 22 and 23.
- the botom-closure sub-panel 410 also comprises a second diagonal crease line 412 extending between position BC4 and said position adjacent the botom edge sub-section lid midway between longitudinal crease lines 22 and 23, thus intercepting the first diagonal crease line 411 in this position.
- the diagonal crease lines 411 and 412 form folding lines that assist folding of the bottom-closure sub- panel 410 when the bottom closure of the carton is formed.
- the top-closure sub-panel 430 comprises a transverse gable crease line 431 extending transversely across the panel P4 defining a folding line forming a border between a top gusset sub-sub-panel 432 and a gable seal sub-sub-panel 433 of the top-closure sub-panel 430.
- the top gusset sub-sub-panel 432 comprises a first diagonal crease line 434 extending between position TC4 and a position on the transverse gable crease line 431 midway between the longitudinal crease lines 22 and 23.
- the top gusset sub-sub-panel 432 also comprises a second diagonal crease line 435 extending between position TC3 and said position on the transverse gable crease line 431 midway between the longitudinal crease lines 22 and 23, thus intercepting the first diagonal crease line 434 in this position.
- the first diagonal crease line 434 is rectilinear.
- the second diagonal crease line 435 is curved and comprises a first section 435a having a convex side facing the longitudinal crease line section 22c and a second section 435b having a concave side facing the longitudinal crease line section 22c.
- the second diagonal crease line 435 transitions from said a first section 435a to said second section 435b adjacent the position TC3, terminating at the position TC3 in an arc 435’ having a convex side facing the transverse crease line 450 and a radius of curvature R2 (see Figs. 2b and 3b).
- the gable seal sub-sub-panel 433 comprises a longitudinal gable crease line 436 extending between the transverse gable crease line 431 and the top edge sub-section 12d parallel to and equidistant the longitudinal crease lines 22 and 23.
- the longitudinal gable crease line 436 extends vertically from the position on the transverse gable crease line 431 where the diagonal crease lines 434 and 435 intercept each other.
- the fourth panel P4 comprises disposal crease lines 460a-460e which are configured to be activated by a user during disposal of the carton when empty.
- two co-linear botom crease lines 540a, 540b define a folding line extending across the panel P5, which folding line is co-linear to the botom crease lines 140, 240, 340 and 440 in panels P1-P4 and forms a border between the botom-closure sub-panel 510 and the wall section sub-panel 520 of panel P5.
- two co-linear top crease lines 550a, 550b define a folding line which is generally co-linear to the top crease line 150 of the first panel PI, which folding line forms a border between the body sub -panel 520 and the top- closure sub-panel 530.
- two co-linear top-fin crease lines 531a, 531b define a folding line which is generally co-linear to the top-fin crease lines 131 and 331 of panels PI and P3, which folding line forms a border between a roof sub-sub-panel 532 and a top-fin sub-sub-panel 533 of the top-closure sub-panel 530.
- the angle b formed between the first diagonal crease line 235 of the second panel P2 and the second longitudinal crease line section 21c and the angle b formed between the first diagonal crease line 435 of the fourth panel P4 and the third longitudinal crease line section 22c may be any one of at least 80° and at least 90°, e.g. 90° as in the embodiment shown in Fig. 1.
- the arc 250’ of the transverse crease line 250 of the second panel P2 and the arc 450’ of the transverse crease line 450 of the fourth panel P4 both have a radius of curvature Rl (see Figs 2a, 2b, 3a and 3b).
- the arc 235’ of the diagonal crease line 235 of the second panel P2 and the arc 435’ of the diagonal crease line 435 of the fourth panel P4 both have a radius of curvature R2.
- the radius of curvature R2 of the arcs 235’ and 435’ is smaller than the radius of curvature Rl of the arcs 250’ and 450’.
- the second radius of curvature R2 may be within the range of 20%-80% of the first radius of curvature Rl, e.g. within the range of 40%-60% of the first radius of curvature Rl, or 45%-55% of the first radius of curvature Rl. In one embodiment, show in Figs. 4 and 5, Rl is 14 mm and R2 is 6 mm.
- the arc 235’ may have a centre located on the longitudinal crease line section 21c, and the arc 435’ may have a centre located on the longitudinal crease line section 22c, as is shown if Figs. 4 and 5. This will make the diagonal crease lines 235 and 435 connect to the top corner position TC2 and TC3, respectively, at a right angle, which has been found to result in particularly precise folding of the carton blank.
- the arc 250’ may have a centre located in the second panel P2 at a lateral distance D from the longitudinal crease line section 21c, and the arc 450’ may have a centre located in the fourth panel P4 at the same lateral distance D from the longitudinal crease line section 22c.
- the lateral distance D may be within the range of 40%-90% of the first radius of curvature Rl.
- the centre of the arc 250’ and 450’ is located at a lateral distance D of approximately 11 mm from the longitudinal crease line section 21c and 22c respectively.
- a method of forming a carton from the carton blank 10 discussed above is as follows. After the blank of Fig. 1 has been produced, the fifth panel P5 is sealed to the inside wall of panel PI to form a sleeve open at both ends. This sleeve is subsequently bottom-sealed, by folding inwards of the first sub-panels 110, 210, 310, 410 and 510 and sealing of the same, to produce an open-topped, bottom-sealed carton.
- a pour spout fitment see Figs.
- the sub-panels 130, 230, 330, 430 and 530 are then folded-in and sealed to each other to provide a sealed top closure of the carton.
- Figs. 6-8 show a carton 600 formed from the blank 10 illustrated in Fig. 1.
- the carton 600 comprises top and bottom corners TCI’, TC2’, TC3’, TC4’, BCF, BC2’, BC3’ and BC4’ defined by corresponding top and bottom comer positions TCI, TC2, TC3, TC4, BC1, BC2, BC3 and BC4 of the blank 10 (see Fig. 1). Between the top comers TCI’, TC2’, TC3’, TC4’ and the bottom comers BCF, BC2’, BC3’, BC4’ the carton 600 has a generally rectangular or square cross-section.
- the carton 600 comprises a bottom closure 602 formed from the sub-panels 110, 210, 310, 410 and 510.
- the carton 600 further comprises a back wall section 610 formed from the sub panel 120 and a front wall section 606 formed from the sub-panel 320.
- the carton 600 also comprises a first side wall section 604 formed from the sub-panel 220 and a second side wall section 608 formed from the sub-panel 420.
- the carton 600 also comprises a top closure 612 formed from the sub-panels 130, 230, 330, 430 and 530.
- the top closure 612 comprises a back roof section 614 formed from the sub- sub-panel 132 and a front roof section 616 formed from the sub-sub-panel 332.
- the top closure 612 also comprises a first gable section 618 formed from a section of sub-sub-panel 232 delimited by crease lines 234 and 235, and a second gable section 620 formed from a section of sub-sub-panel 432 delimited by crease lines 434 and 435.
- the top closure 612 further comprises a top fin 622 where the sub-panels 130, 230, 330, 430 and 530 are sealed to each other and a pour spout 624 arranged in the through-going opening 334 in sub-sub- panel 332.
- the front wall 606 is continuous with the front roof section 616 via a curved transition area T.
- each diagonal crease line 235 and 435 such that it terminates in the corner position TC2, TC3 in an arc 235’, 435’ having a convex side facing the transverse crease line 250, 450 and a radius of curvature R2 being larger than the radius of curvature R1 of the transverse crease line 250, 450 (see Figs. 2 and 3), precise folding of the carton material can be achieved.
- this design of the diagonal crease line 235 and 435 is equally suitable for cartons having a crease line separating the front wall section 606 and the front roof section 616. Consequently, in alternative embodiments, the front wall section and the front roof section may be separated by a transverse crease line, e.g. as is shown in Fig. 9.
- FIG. 9 A further embodiment of a carton blank 30 according to the invention is shown in Fig. 9.
- the carton blank 30 differs from the carton blank 10 of Fig. 1 only in that the third panel P3 of the blank 30 comprises a transverse crease line 350 extending across the panel P3 between positions TC2 and TC3 and defining a folding line forming a border between the wall section sub-panel 320 and the top closure sub-panel 330.
- FIG. 10 Yet a further embodiment of a carton blank 40 according to the invention is shown in Fig. 10.
- the carton blank 40 differs from the carton blank 10 of Fig. 1 in that the transverse crease lines 250 and 450 terminate at the corner positions TCI and TC4, respectively, in the same manner as they terminate at the comer positions TC2 and TC3.
- the carton blank 40 differs from the carton blank 10 of Fig. 1 in that the diagonal crease lines 234 and 434 terminate in the top corner position TCI and TC4 in the same manner as the diagonal crease lines 235 and 435 terminate at the top corner positions TC2 and TC3, respectively.
- the transverse crease line 250 terminates at TCI in an arc 250” having a radius of curvature R1 and a convex side facing the second sub-panel 220.
- the diagonal crease line 234 terminates at the top corner position TCI in an arc 234’ having a convex side facing the transverse crease line 250 and a radius of curvature R2 being larger than the radius of curvature R1 of the arc 250’ ’ (see also Fig. 2).
- the transverse crease line 450 terminates at the top corner positions TC4 in an arc 450” having a radius of curvature R1 and a convex side facing the second sub-panel 420.
- the diagonal crease line 434 terminates at the top corner position TC4 in an arc 434’ having a convex side facing the transverse crease line 450 and a radius of curvature R2 being larger than the radius of curvature R1 of the arc 450” (see also Fig. 3).
- FIG. 11 Yet another embodiment of a carton blank 50 according to the invention is shown in Fig. 11.
- the carton blank 50 differs from the carton blank 40 of Fig. 10 in that the first panel PI has no transverse crease line separating the wall section sub-panel 120 and the top-closure sub panel 130. Consequently, in the carton formed from the blank 50, the back wall will be continuous with the back roof section via a curved transition area in the same manner as is the case for the front wall 606 and the front roof section 616 of the carton 600 shown in Figs. 6-8. It is understood that the above-discussed curved sections 235a, 435b, 250b and 450b of the diagonal crease lines 235, 435 and the transverse crease lines 250, 450 (see Figs.
- Figs. 12a and 12b show such an embodiment of a carton blank where the diagonal crease lines 235, 435 and the transverse crease lines 250, 450 each comprises a rectilinear section 235c, 435c, 250c, 450c arranged between the curved section 235b, 435b, 250b, 450b and the respective top comer position TC2, TC3, which rectilinear section 235c, 435c, 250c, 450c connect to the top corner position TC2 and TC3, respectively.
- Figs. 13a and 13b show such an embodiment of a carton blank where the diagonal crease lines 235, 435 and the transverse crease lines 250, 450 terminate prior to reaching the respective top comer position TC2, TC3, but sufficiently close, i.e. within 0-5 mm, to define a folding line extending to the top corner position.
- terminating the diagonal crease lines 235, 435 and the transverse crease lines 250, 450 e.g. 2 mm from the respective top comer position TC2, TC3 may still provide precise folding of the carton blank, although extending the crease lines 235, 435, 250 and 450 all the way to the top corner positions TC2, TC3 may be preferable.
- the subject of the present invention i.e. the design of the diagonal crease lines of the top-closure sub-panels of panels two and four
- the present invention may be implemented in other types of carton blanks and cartons.
- the design of the diagonal crease lines according to the invention may be implemented in blanks and cartons having bottom closure configurations other than shown in the illustrative embodiments, or in blanks and cartons having dispensing means other than the illustrated pour spout.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cartons (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20775826.9A EP4028331B1 (en) | 2019-09-13 | 2020-09-08 | Carton blank and gable top carton produced from the same |
AU2020344942A AU2020344942B2 (en) | 2019-09-13 | 2020-09-08 | Carton blank and gable top carton produced from the same |
JP2022516393A JP2022548874A (en) | 2019-09-13 | 2020-09-08 | Carton blanks and gable top cartons made from carton blanks |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20191110A NO20191110A1 (en) | 2019-09-13 | 2019-09-13 | Carton blank and gable top carton produced from the same |
NO20191110 | 2019-09-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021048153A1 true WO2021048153A1 (en) | 2021-03-18 |
Family
ID=72613896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2020/075120 WO2021048153A1 (en) | 2019-09-13 | 2020-09-08 | Carton blank and gable top carton produced from the same |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4028331B1 (en) |
JP (1) | JP2022548874A (en) |
AU (1) | AU2020344942B2 (en) |
NO (1) | NO20191110A1 (en) |
WO (1) | WO2021048153A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0632315U (en) * | 1992-09-30 | 1994-04-26 | 凸版印刷株式会社 | Liquid paper container |
EP1584563A1 (en) * | 2004-04-09 | 2005-10-12 | Tetra Laval Holdings & Finance S.A. | Gable-top package for pourable food products and method for dimensioning thereof |
ES2339206A1 (en) * | 2008-02-13 | 2010-05-17 | Jose Miguel Sanchez Moreno | Gable-top containers for liquids or products that can be poured (Machine-translation by Google Translate, not legally binding) |
JP2015085945A (en) * | 2013-10-29 | 2015-05-07 | 雪印メグミルク株式会社 | Gable top container |
-
2019
- 2019-09-13 NO NO20191110A patent/NO20191110A1/en unknown
-
2020
- 2020-09-08 JP JP2022516393A patent/JP2022548874A/en active Pending
- 2020-09-08 WO PCT/EP2020/075120 patent/WO2021048153A1/en unknown
- 2020-09-08 EP EP20775826.9A patent/EP4028331B1/en active Active
- 2020-09-08 AU AU2020344942A patent/AU2020344942B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0632315U (en) * | 1992-09-30 | 1994-04-26 | 凸版印刷株式会社 | Liquid paper container |
EP1584563A1 (en) * | 2004-04-09 | 2005-10-12 | Tetra Laval Holdings & Finance S.A. | Gable-top package for pourable food products and method for dimensioning thereof |
ES2339206A1 (en) * | 2008-02-13 | 2010-05-17 | Jose Miguel Sanchez Moreno | Gable-top containers for liquids or products that can be poured (Machine-translation by Google Translate, not legally binding) |
JP2015085945A (en) * | 2013-10-29 | 2015-05-07 | 雪印メグミルク株式会社 | Gable top container |
Also Published As
Publication number | Publication date |
---|---|
NO20191110A1 (en) | 2021-03-15 |
EP4028331B1 (en) | 2024-05-01 |
EP4028331A1 (en) | 2022-07-20 |
AU2020344942A1 (en) | 2022-04-07 |
JP2022548874A (en) | 2022-11-22 |
AU2020344942B2 (en) | 2024-04-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1597161B1 (en) | Carton with pour spout | |
JP7199491B2 (en) | Sheet packaging material for producing sealed packages for pourable food products | |
EP0650895B1 (en) | Packaging container and blank for producing the same | |
AU689845B2 (en) | Carton bottom sealer | |
KR20000064741A (en) | Blanks for Packaging and Packaging | |
JP2022507793A (en) | Sheet-like packaging materials for producing sealed packaging containers containing products that can be poured and packaging containers obtained from them. | |
WO2017202554A1 (en) | A packaging material, and a package | |
IL211719A (en) | Flexible packaging container having a bag insert | |
CA1314272C (en) | Opening arrangement for gable top container | |
EP1824744B1 (en) | Carton with folded-in gusset tips | |
AU2020344942B2 (en) | Carton blank and gable top carton produced from the same | |
EP3848298A1 (en) | Paper-based or paperboard-based container and related method | |
WO2009030910A2 (en) | Improvements in or relating to packaging | |
ZA200610374B (en) | Container made of laminate mateial, blank and method | |
EP0277517B1 (en) | A blank having folding lines for forming a container | |
EP0089501A1 (en) | Package | |
CN109641672A (en) | Anvil means | |
US20090026252A1 (en) | Container with reclosable pour spout | |
NO20200604A1 (en) | ||
US20060124714A1 (en) | Carton with folded-in gusset tips | |
AU2011202535A1 (en) | Carton with pour spout | |
WO1999042379A1 (en) | Packaging container for loose material |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20775826 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2022516393 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2020344942 Country of ref document: AU Date of ref document: 20200908 Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2020775826 Country of ref document: EP Effective date: 20220413 |