WO1982004025A1 - Gable topped cartons - Google Patents
Gable topped cartons Download PDFInfo
- Publication number
- WO1982004025A1 WO1982004025A1 PCT/GB1982/000144 GB8200144W WO8204025A1 WO 1982004025 A1 WO1982004025 A1 WO 1982004025A1 GB 8200144 W GB8200144 W GB 8200144W WO 8204025 A1 WO8204025 A1 WO 8204025A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gable
- carton
- crease
- panels
- roof panels
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
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
Definitions
- This invention relates to gable topped cartons such as may be used, for example, for containing liquids such as milk or fruit juice.
- gable topped cartons such as may be used, for example, for containing liquids such as milk or fruit juice.
- Gable topped cartons are widely used for packaging liquids for human consumption such as milk or fruit juice.
- a known gable topped carton has two outer roof panels extending from opposite side walls of the carton and meeting one another at a top seal, and two generally triangular gable panels extending respectively from front and rear walls of the carton and connected to the outer roof panels by inner roof panels which meet the adjacent gable panels along gable creases.
- At least one of the gable creases deviates from a straight line between the ends of that gable crease. This feature reduces the stress set up in the material of the carton, makes the carton easier to open and reduces the tendency of the carton to buckle inwardly along the crease between the respective gable panel and the adjacent wall of the carton.
- the gable creases between both of the gable panels and their inner roof panels are not straight.
- the gable creases may be arcuate, and, where the carton is square in cross-section, the radius of the arc may be approximately double the length of each side.
- the gable creases may follow a non- arcuate curve, or they may each comprise two or more mutually inclined straight portions.
- the front and rear inner roof panels terminate at front and rear inner seal lips respectively, the front inner seal lips each having a top edge which is lower at a position between its ends than it is at its ends. This feature can provide a sealing area of reduced efficiency, so making the carton easier to open.
- the outer roof panels and the gable panels meet the respective walls at respective creases of which the central portions are copIanar with one another, each crease terminating in an end portion which deviates from the line of the central portion of the crease.
- Figure 1 shows the upper portion of a blank for erection into a gable-topped carton:
- Figure 2 shows the upper portion of the erected carton
- Figure 3 is a side view of the carton of Figure 2;
- Figure 4 shows the carton of Figures 2 and 3 during opening
- Figure 5 shows the fully opened carton.
- the blank shown in Figure 1 is made from fully bleached sulphite board provided on both faces with a thermoplastic coating.
- the blank comprises two side wall panels 2 and 4, a front wall panel 6 and a rear wall panel 8.
- Outer roof panels 10 and 12 are hinged respectively to the side walls 2 and 4 along creases 9, and these panels terminate in outer seal lips 14 and 16 respectively.
- Creases 18 run through the panels 10 and 12, to assist folding of these panels upon opening of the carton, as will be described later.
- creases 9 have upwardly deflected end portions 9A and the creases 19 have downwardly deflected end portions 19A. This feature reduces bunching of the material at the upper corners of the panels 2, 4 , 6 and 8 when the carton is erected, while enabling the creases 9 and 19 to be colinear.
- the gable panels 20 and 22 are connected to the adjacent outer roof panels 10 and 12 by front and rear inner roof panels 24 and 26 respectively.
- the gable panels 20 meet the inner roof panels 24 and 26 along gable creases 25.
- the rear inner roof panels 26 terminate at their upper edges in rear inner seal lips 28, and the front inner roof panels 24 terminate at their upper edges in front inner seal lips 30.
- the front inner seal lips are symmetrical about a crease 32 at which they meet each other.
- the front inner seal lips meet the adjacent inner roof panels 2k along creases 33 which slope upwardly away from the crease 32.
- the upper edge of each front inner seal lip extends from the crease 32 in a concave curve which merges into a straight portion parallel to the respective crease 33.
- the apex formed by the meeting of the curved portions of the top edges of the front inner seal lips is at approximately the same level as, or slightly above, the outer ends of the straight portions of these top edges.
- a seam flap 34 is connected to the panels 4 , 12 and 16. During erection of the carton, this flap 34 is bonded to the panels 8, 22, 26 and 28 and the blank is formed into a tube.
- gable creases 25 between the gable panels 20 and 22 and the adjacent inner roof panels 24 and 26 are not straight.
- these creases.25 are arcuate, with a radius of curvature of 150 mm, the width of each panel 2, 4, 6 and 8 being approximately 70 mm.
- the construction of the base of the carton is not shown in a ⁇ y of the Figures, because it has no bearing on the present invention. There are a number of suitable base constructions available.
- the erected, closed carton is shown in Figure 2.
- the outer seal lips 14 and 16 are brought together, the gable panels 20 and 22 being pushed inwardly between them.
- the inner roof panels 24 and 26 are folded relative to the gable panels 20 about the gable creases 25 and lie adjacent the inner surfaces of the outer roof panels 10 and 12.
- Pressure is applied to the outer seal lips 14 and 16 and this, together with the application of heat to the thermoplastic coating of the blank material, causes the inner seal lips 30 to be sealed together, and both pairs of inner seal, lips 28 and 30 to be sealed to the outer seal lips 14 and 16, so forming a primary seal.
- the top edge regions of the out er seal lips 14 and 16 are sealed together to form a secondary seal.
- Figure 3 is side view of the top of the carton. This figure shows diagrammatically the positions of the front and rear inner seal lips 28 and 30. Figure 3 shows the top edges of the sealing lips 28 to extend parallel to the top edges of the outer sealing lips 14 and 16.
- Sealing of the carton is preferably effected using a pair of jaws which are stepped along a horizontal line, the position of which is indicated by dashed line 35 in Figure 3.
- the reason for stepping the jaws is to take account of the fact that only two layers of material are present at the upper region of the outer seal lips 14 and 16, while four layers are present at the lower region of the outer seal lips 14 and 16. It will be appreciated that the hatched area in Figure 3 will be subjected to a lower sealing pressure than the other areas of the top seal, because it is engaged by a portion of the jaws adapted for four layers of material; whereas only two layers are present.
- the hatched area is thus provided with a less efficient seal than the other parts of the top seal, which makes it easier to open the carton as will be described below.
- the projecting apex formed by the curved portions of the front inner seal lips 30 lies close to, or abuts, the reverse crease between the rear inner seal lips 28, so reducing the possibility of leakage through the tapering gap 37 between the front and rear inner seal lips.
- the portions of the outer roof panels nearer the front wall 6 are folded outwardly of the carton along the creases 18, taking with them the front inner roof panels 24.
- This breaks the secondary seal between the outer seal lips 14 and 16 as well as the seal between the front inner seal lips 30.
- the inner seal lips 30 can then be drawn outwardly of the carton to break the seal between the inner seal lips 30 and to form a pouring spout as shown in Figure 5.
- the creases 18, like the creases 25, are arcuate but, in the illustrated embodiment they are curved in the opposite sense (in the closed carton) and have a slightly greater radius of curvature, for example, 157mm. This configuration assists in the opening of the carton.
- the arcuate creases 25 reduce the stresses set up in the material of the carton when it is erected. Also, the curved creases enhance the "overcentre" action provided by the resilience of the outer roof panels when the carton is opened to form the pouring spout. This causes the gable panel 20, the front inner roof panels 24, the front inner sealing lips 30 and the pouring lip 32 to flip outwardly when the pouring lip 32 is pulled. This feature, together with the reduced sealing efficiency immediately above the top edges of the front inner seal lips 30 and the arcuate creases 18, make the carton easier to open than has previously been the case.
- arcuate creases Another advantage of the arcuate creases is that the carton is less likely to buckle inwardly along the creases at the top of the front and rear walls 6 and 8.
- the present invention has been described with reference to a carton having a vertically upwardly projecting top seal, it can also be applied to cartons having a slanting top seal, which provides improved stacking characteristics.
- the crease between the outer roof panel 10 and the outer sealing lip 14 may be lower than the corresponding crease between the outer roof panel 12 and the outer sealing lip 16.
- INDUSTRIAL APPLICABILITY Cartons as described can he made liquid-tight and are thus suitable for the packaging of, for example, milk and fruit juices.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cartons (AREA)
Abstract
Un carton dont le haut est en forme de pignon, par exemple pour des liquides, comprend des panneaux externes de toiture (10 et 12) relies a des parois laterales (2 et 4), et des panneaux de pignon (20 et 22) relies a des parois avant et arriere (6 et 8). Les panneaux de pignon (20 et 22) sont relies aux panneaux exterieurs de toiture par des panneaux interieurs de toiture (24 et 26). Les panneaux de pignon (20 et 22) rencontrent les panneaux interieurs de toiture (24 et 26) le long de plis de pignon (25) qui ne sont pas droits. Dans le mode illustre de realisation, les plis de pignon (25) sont arques. Ceci elimine les contraintes s'exercant sur le materiau de carton et facilite l'ouverture du carton. Les panneaux interieurs de toiture (24) se terminent en des levres interieures de fermeture etanche (30). Les bords superieurs des levres interieures de fermeture etanche (30) sont formes de maniere a reduire l'efficacite du joint etanche dans cette zone, de nouveau pour faciliter l'ouverture du carton. Les panneaux exterieurs de toiture (10 et 12) et les panneaux de pignon (20 et 22) rencontrent les parois adjacentes (2, 4, 6 et 8) le long des plis (9 et 19). Les parties centrales des plis (9 et 19) sont coplanaires, mais les parties extremes (9A et 19A) devient des parties centrales pour reduire le groupement du materiau au niveau des coins du carton.A gable-top carton, for example for liquids, comprises outer roof panels (10 and 12) connected to side walls (2 and 4), and gable panels (20 and 22) connected has front and rear walls (6 and 8). The gable panels (20 and 22) are connected to the exterior roof panels by interior roof panels (24 and 26). The gable panels (20 and 22) meet the interior roof panels (24 and 26) along gable folds (25) which are not straight. In the illustrated embodiment, the gable bends (25) are arched. This eliminates stress on the carton material and makes it easier to open the carton. Interior roof panels (24) terminate in interior sealing lips (30). The upper edges of the inner seal lips (30) are shaped to reduce the effectiveness of the seal in this area, again to facilitate opening the carton. Exterior roof panels (10 and 12) and gable panels (20 and 22) meet adjacent walls (2, 4, 6 and 8) along folds (9 and 19). The center portions of the folds (9 and 19) are coplanar, but the end portions (9A and 19A) become center portions to reduce bunching of material at the corners of the carton.
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU83998/82A AU8399882A (en) | 1981-05-14 | 1982-05-13 | Gable topped cartons |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8114778 | 1981-05-14 | ||
| GB8114778 | 1981-05-14 | ||
| GB8211841820423 | 1982-04-23 | ||
| GB8211841A GB2099794B (en) | 1981-05-14 | 1982-04-23 | Gable topped cartons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1982004025A1 true WO1982004025A1 (en) | 1982-11-25 |
Family
ID=26279454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/GB1982/000144 Ceased WO1982004025A1 (en) | 1981-05-14 | 1982-05-13 | Gable topped cartons |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0078817A1 (en) |
| JP (1) | JPS58500754A (en) |
| GB (1) | GB2099794B (en) |
| IT (1) | IT1152412B (en) |
| WO (1) | WO1982004025A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4586650A (en) * | 1984-09-13 | 1986-05-06 | Jujo Paper Co., Ltd. | Blank structure with indented fold lines for a cardboard container |
| US4744467A (en) * | 1984-12-19 | 1988-05-17 | Tetra Pak International Ab | Liquid pack with areas of low adhesion |
| US4819861A (en) * | 1986-02-12 | 1989-04-11 | Jujo Paper Co., Ltd. | Paper container for liquid |
| US4909432A (en) * | 1986-02-02 | 1990-03-20 | Jujo Paper Co., Ltd. | Paper container for liquid |
| EP0331792A3 (en) * | 1988-03-11 | 1990-03-21 | Fbi Brands Ltd. | Easy opening gable top carton |
| DE4000136C1 (en) * | 1990-01-04 | 1991-08-01 | Unilever N.V., Rotterdam, Nl | |
| CN1777538B (en) * | 2003-02-25 | 2011-07-06 | 埃洛帕克系统公开股份有限公司 | Carton with pour spout. |
| US12157615B2 (en) | 2019-12-16 | 2024-12-03 | Westrock Packaging Systems, Llc | Carton and blank therefor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0226089D0 (en) * | 2002-11-08 | 2002-12-18 | Weintroub Jeremy N | House carton |
| US8851361B2 (en) * | 2005-01-29 | 2014-10-07 | Elopak Systems Ag | Container, blank, mandrel and method of forming the container |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2137614A (en) * | 1936-11-02 | 1938-11-22 | Nat Folding Box Co | Container |
| GB973801A (en) * | 1959-11-16 | 1964-10-28 | American Can Co | A self-sustaining carton or container |
| US3554430A (en) * | 1969-04-17 | 1971-01-12 | Phillips Petroleum Co | Gable top container |
| US4214697A (en) * | 1978-10-27 | 1980-07-29 | Champion International Corporation | Liquid gable top carton with integral carrying handle |
-
1982
- 1982-04-23 GB GB8211841A patent/GB2099794B/en not_active Expired
- 1982-05-13 JP JP57501462A patent/JPS58500754A/en active Pending
- 1982-05-13 WO PCT/GB1982/000144 patent/WO1982004025A1/en not_active Ceased
- 1982-05-13 EP EP82901360A patent/EP0078817A1/en not_active Withdrawn
- 1982-05-14 IT IT21298/82A patent/IT1152412B/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2137614A (en) * | 1936-11-02 | 1938-11-22 | Nat Folding Box Co | Container |
| GB973801A (en) * | 1959-11-16 | 1964-10-28 | American Can Co | A self-sustaining carton or container |
| US3554430A (en) * | 1969-04-17 | 1971-01-12 | Phillips Petroleum Co | Gable top container |
| US4214697A (en) * | 1978-10-27 | 1980-07-29 | Champion International Corporation | Liquid gable top carton with integral carrying handle |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4586650A (en) * | 1984-09-13 | 1986-05-06 | Jujo Paper Co., Ltd. | Blank structure with indented fold lines for a cardboard container |
| US4744467A (en) * | 1984-12-19 | 1988-05-17 | Tetra Pak International Ab | Liquid pack with areas of low adhesion |
| US4828539A (en) * | 1984-12-19 | 1989-05-09 | Tetra Pak International Ab | Liquid pack and apparatus for the production thereof |
| US4909432A (en) * | 1986-02-02 | 1990-03-20 | Jujo Paper Co., Ltd. | Paper container for liquid |
| US4819861A (en) * | 1986-02-12 | 1989-04-11 | Jujo Paper Co., Ltd. | Paper container for liquid |
| EP0331792A3 (en) * | 1988-03-11 | 1990-03-21 | Fbi Brands Ltd. | Easy opening gable top carton |
| US4946041A (en) * | 1988-03-11 | 1990-08-07 | Fbi Brands Ltd. | Easy opening gable top carton |
| DE4000136C1 (en) * | 1990-01-04 | 1991-08-01 | Unilever N.V., Rotterdam, Nl | |
| CN1777538B (en) * | 2003-02-25 | 2011-07-06 | 埃洛帕克系统公开股份有限公司 | Carton with pour spout. |
| US12157615B2 (en) | 2019-12-16 | 2024-12-03 | Westrock Packaging Systems, Llc | Carton and blank therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2099794A (en) | 1982-12-15 |
| EP0078817A1 (en) | 1983-05-18 |
| IT8221298A0 (en) | 1982-05-14 |
| JPS58500754A (en) | 1983-05-12 |
| GB2099794B (en) | 1985-01-30 |
| IT1152412B (en) | 1986-12-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Designated state(s): AU BR DK FI HU JP LK MC MG MW NO RO SU US |
|
| AL | Designated countries for regional patents |
Designated state(s): AT BE CF CG CH CM DE FR GA GB LU NL SE SN TD TG |