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WO2025157392A1 - Box for packaging and cooking popcorn - Google Patents

Box for packaging and cooking popcorn

Info

Publication number
WO2025157392A1
WO2025157392A1 PCT/EP2024/051496 EP2024051496W WO2025157392A1 WO 2025157392 A1 WO2025157392 A1 WO 2025157392A1 EP 2024051496 W EP2024051496 W EP 2024051496W WO 2025157392 A1 WO2025157392 A1 WO 2025157392A1
Authority
WO
WIPO (PCT)
Prior art keywords
box
side walls
box according
flaps
upper edges
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.)
Pending
Application number
PCT/EP2024/051496
Other languages
French (fr)
Inventor
François Berthault
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to PCT/EP2024/051496 priority Critical patent/WO2025157392A1/en
Priority to PCT/EP2024/063104 priority patent/WO2025157426A1/en
Publication of WO2025157392A1 publication Critical patent/WO2025157392A1/en
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B65D5/64—Lids
    • B65D5/66—Hinged lids
    • B65D5/6626—Hinged lids formed by folding extensions of a side panel of a container body formed by erecting a "cross-like" blank
    • B65D5/665—Hinged lids formed by folding extensions of a side panel of a container body formed by erecting a "cross-like" blank the lid being held in closed position by self-locking integral flaps or tabs
    • B65D5/6661—Flaps provided over the total length of the lid edge opposite to the hinge
    • 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
    • B65D5/42—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
    • B65D5/5011—Integral elements for containers having tubular body walls formed by folding inwardly of extensions hinged to the upper or lower edges of the body
    • 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
    • B65D5/5011—Integral elements for containers having tubular body walls formed by folding inwardly of extensions hinged to the upper or lower edges of the body
    • B65D5/5014—Integral elements for containers having tubular body walls formed by folding inwardly of extensions hinged to the upper or lower edges of the body and with an integral end closure

Definitions

  • the present application relates to a box for packaging and cooking popcorn and to a device comprising said box.
  • a device for packaging and cooking popcorn comprises a foldable cardboard box 10 as well as a tray, containing corn kernels to be cooked, positioned in the tray.
  • the tray is generally obtained by thermoforming and includes a container which has a coating which promotes the absorption of the energy of electromagnetic waves also called "susceptor".
  • the tray includes a lid to close it, said lid being glued to the periphery of the container using a hot melt glue.
  • the tray ensures airtight packaging of corn grains and adjuvants such as sugar or vegetable oil for example.
  • the box 10 comprises in the lower part a first non-foldable volume 12 surmounted by a second foldable and retractable volume 14 which makes it possible to significantly reduce the volume of the box 10 during transport, storage and at the point of sale.
  • the cardboard box 10 comprises a base 16, four side walls 18.1 to 18.4 and a top 20.
  • Each side wall 18.1 to 18.4 comprises a first folding line 22, parallel and slightly spaced (of the order of 1 cm) from the base 16, as well as a second median folding line 24 parallel to the first folding line 22 and arranged equidistant from the first folding line 22 and the top 20.
  • Two opposite side walls 18.2 and 18.4 comprise, in addition to the first and second fold lines, two diagonal fold lines 26 in the portion of the side walls located above the first fold line 22.
  • the box 10 can occupy a storage position, visible in part (A) of figure 1, in which the side wall parts 18.1 to 18.4 located above the first folding lines 22 are pressed against each other, above the first volume 12 located under the first folding lines 22 and containing the tray, as well as a deployed position, visible in part (B) of figure 1, in which the side walls 18.1 to 18.4 are unfolded and delimit a large volume allowing the corn grains to be cooked.
  • the top 20 of the box comprises two flaps 28.1, 28.2 connected to the side walls 18.2 and 18.4 with the diagonal fold lines 26 as well as two flaps 30.1 and 30.2 connected to the other side walls 18.1 and 18.3.
  • the flaps 30.1 and 30.2 overlap slightly so as to close the box.
  • each flap comprises an ear 32.1 and 32.2 hinged relative to the rest of the flap 30.1, 30.2 along a fold line 34.
  • the ears 32.1 and 32.2 are oriented in opposite directions and form hooks which cooperate with each other so as to maintain the flaps in the closed position.
  • the box is made from a cardboard blank.
  • This box 10 is particularly clever because it takes up a small volume during transport and storage and offers a large volume closed by the flaps 28.1, 28.2 and the flaps 30.1 and 30.2 when cooking the corn.
  • WO2014064342 proposes a box which comprises, instead of the two ears, a tab connected to a first flap as well as a slot provided at the level of a second flap and configured to receive the tab.
  • the tab and the slot have particular shapes to allow automation of the insertion of the tab into the slot and thus the closing of the box.
  • a packaging line for shaping the box described in WO2014064342, closing its bottom, inserting a tray into the box, closing the top of the box and folding the box into its storage position is relatively complex to adjust.
  • Document US2005048170 proposes a device for packaging and cooking popcorn comprising a box which comprises a bottom and four side walls each comprising a first fold line substantially parallel to the bottom. Two opposite side walls comprise two inverted V-shaped fold lines positioned above the first fold line. Thanks to these V-shaped fold lines, the upper parts of the side walls located above the first fold line can be folded to close the box.
  • this box is configured to occupy a first compact state in which the upper parts of the side walls are folded and a second deployed state in which the upper parts of the side walls are positioned in line with the lower parts of the side walls.
  • the packaging and cooking device described in US2005048170 includes a "susceptor" type coating covering the bottom as well as a film covering the corn kernels placed on the bottom, said film extending against the inner face of the side walls and being fixed at the upper edges of the side walls.
  • a "susceptor" type coating covering the bottom as well as a film covering the corn kernels placed on the bottom, said film extending against the inner face of the side walls and being fixed at the upper edges of the side walls.
  • the film is pressed against the corn kernels and against the side walls.
  • the film moves away from the side walls and allows the popcorn to be kept between the box and the film.
  • the present invention aims to remedy all or part of the drawbacks of the prior art.
  • the invention relates to a box for packaging and cooking popcorn comprising a base and first, second, third and fourth side walls connected in pairs; each of the first, second, third and fourth side walls extending between a lower edge adjoining the base and an upper edge comprising a lower fold line substantially parallel to the base; each of the first and third side walls comprising first and second oblique fold lines forming an inverted V, the box being configured to occupy a folded state as well as a deployed state in which the upper edges of the first, second, third and fourth side walls delimit an opening.
  • the box comprises a lid, configured to close the opening when the box is in the deployed state, which has first and second sides connected respectively to the upper edges of the second and fourth side walls by fold lines, the cover comprising at least one fold line allowing it to be folded when the box is in the folded state.
  • This solution provides a compact and easy-to-fold box, simplifying a packaging line for filling, closing and folding boxes.
  • Figure 1 is a representation of a popcorn packaging and cooking box illustrating a prior art embodiment, in a folded position on part (A) and an extended position on part (B),
  • Figure 2 is a front view of a cardboard blank for forming the box shown in Figure 1,
  • Figure 3 is a perspective view of a popcorn packaging and cooking box illustrating one embodiment of the invention in a collapsed state
  • Figure 4 is a side view of the box seen in Figure 3 being deployed
  • Figure 5 is a perspective view of the box shown in Figure 3 in the deployed and unlocked state
  • Figure 6 is a cross-section, along the plane PC of Figure 5, of the box visible in Figure 3 in the deployed and unlocked state,
  • Figure 7 is a cross-section of the box seen in Figure 3 in the deployed and locked state
  • Figure 8 is a perspective view of the box shown in Figure 3 in the deployed and locked state.
  • Figure 9 is a perspective view of the box shown in Figure 3 in the open state
  • Figure 10 is a front view of a blank of a popcorn packaging and cooking box illustrating an embodiment of the invention
  • Figure 11 is a front view of a blank of a popcorn packaging and cooking box illustrating another embodiment of the invention.
  • Figure 12 is a front view of a blank of a popcorn packaging and cooking box illustrating another embodiment of the invention
  • Figure 13 is a sectional view of a lower portion of a popcorn packaging and cooking device illustrating one embodiment of the invention
  • Figure 14 is a sectional view of a lower portion of a popcorn packaging and cooking device illustrating another embodiment of the invention.
  • a device for packaging and cooking popcorn 40 comprises a box 42 in which a tray 44 is positioned (visible in figure 13).
  • the tray 44 is generally obtained by thermoforming and comprises a container 44.1 which has a base F44.1, a peripheral collar C44.1 as well as a coating made of a material promoting the absorption of the energy of electromagnetic waves also called a “susceptor”.
  • the tray 44 comprises a lid 44.2 for closing it, glued to the periphery of the container 44.1 using a hot-melt glue 44.3.
  • the tray 44 ensures leak-proof packaging of the corn grains and additives such as sugar or vegetable oil for example.
  • the tray 44 has a height H44 corresponding to the dimension separating the base F44.1 and the lid 44.2 measured in a direction perpendicular to the base F44.1.
  • the box 42 comprises in the lower part a first non-foldable volume 42.1 surmounted by a second foldable volume 42.2 which makes it possible to significantly reduce the interior volume of the box 42 during transport, storage and at the point of sale.
  • the box 42 comprises a bottom 46 as well as first, second, third and fourth side walls 48, 50, 52, 54 connected two by two by first fold lines 56 so as to form a tube.
  • the first fold lines 56 are substantially flared.
  • the box 42 is substantially frustoconical, promoting the stacking of the boxes 42 inside each other.
  • the first fold lines 56 could be parallel to each other.
  • Each of the first, second, third and fourth side walls 48, 50, 52 and 54 includes a lower edge 58 adjoining the bottom 46 as well as a lower fold line 60 substantially parallel to the bottom 46 or the lower edge 58.
  • the distances between the lower edge 58 and the lower folding line 60 of the different side walls 48, 50, 52, 54 are identical and substantially equal to or very slightly greater than the height H44 of the tray 44.
  • the distance separating the lower edge 58 and the lower fold line 60 measures in the order of 10 to 12 mm.
  • the area of the box 42 located between the bottom 46 and a first plane passing through the lower folding lines 60 corresponds to the first non-foldable volume 42.1, configured to contain the tray 44.
  • the first, second, third and fourth side walls 48, 50, 52 and 54 each extend between the lower edge 58 and an upper edge 62 substantially parallel to the lower edge 58, to the lower fold line 60 or to the bottom 46.
  • the distances between the lower fold lines 60 and the upper edges 62 of the different side walls 48, 50, 52, 54 are identical.
  • the distance separating the lower fold line 60 and the upper edge 62 measures of the order of 80 mm.
  • Each upper edge 62 has a length L0 of the order of 160 to 170 mm.
  • the lower fold line 60 and the upper edge 62 are separated by a distance substantially equal to half the length of the upper edge 62.
  • the lower fold line 60 divides each side wall 48, 50, 52, 54 into a lower portion 64.1 between the lower edge 58 and the lower fold line 60 and an upper portion 64.2 between the lower fold line 60 and the upper edge 62.
  • Each of the first and third side walls 48, 52 comprises first and second oblique fold lines 66, 66' forming an inverted V.
  • the first and second oblique fold lines 66.1, 66.2 have common first ends 66.1, 66.1' located approximately at the middle of the upper edge 62 as well as second ends 66.2, 66.2' located at the ends of the lower fold line 60.
  • the first and second oblique fold lines 66, 66' divide each of the first and third side walls 48, 52 into a first central triangle 68.1 adjoining the lower fold line 60 as well as second and third triangles 68.2, 68.3 positioned on either side of the first central triangle 68.1 and adjoining the upper edge 62.
  • the area of the box 42 located between the first plane passing through the lower fold lines 60 and a second plane passing through the upper edges 62 corresponds to the second foldable volume 42.2.
  • the box 42 is configured to occupy a folded state, visible in FIG. 3, in which the second and fourth side walls 50, 54 are substantially parallel to the bottom 46 and in which, for each of the first and third side walls 48, 52, the first central triangle 68.1 is folded parallel to the bottom 46 by means of the lower folding line 60, the second and third triangles 68.2, 68.3 being folded against the first central triangle
  • the box 42 is also configured to occupy a deployed state, visible in Figures 5, 8 and 9, in which the first, second, third and fourth side walls are substantially planar.
  • the upper edges 62 of the first, second, third and fourth side walls 48, 50, 52, 54 define an opening 70 (visible in Figure 9) when the box 42 is in the deployed state.
  • the bottom 46 comprises at least one large flap 72 connected to at least one of the first, second, third and fourth side walls 48, 50, 52, 54 by a fold line located at the lower edge 58 of the corresponding side wall.
  • the bottom 46 comprises first and second large flaps 72, 72' connected respectively to two opposite side walls, in particular to the second and fourth side walls 50, 54, by fold lines located at the level of the lower edges 58.
  • the second large flap 72' is positioned between the first large flap 72 and the interior of the box 42 and has an outer face F72' pressed against an inner face F72 of the first large flap 72.
  • the tray 44 is positioned against the second large flap 72'.
  • the first large flap 72 is sized to extend over the entire surface area of the bottom 46.
  • the second large flap 72' is sized to extend over at least a portion of the surface area of the bottom 46.
  • the bottom 46 comprises a bonding connection 74 connecting the first and second large flaps 72, 72', more particularly the inner face F72 of the first large flap 72 and the outer face F72' of the second large flap 72'.
  • the second large flap 72' has at least one through-hole 72.1'.
  • the glue 76 positioned in line with the through-hole 72.1' is used to fix the tray 44 against the bottom 46, as illustrated in FIG. 13.
  • the adhesive connection 74 connecting the first and second large flaps 72, 72' provide a connection between the bottom 46 and the tray 44, allowing the latter to be immobilized in the box 42.
  • the bottom 46 comprises first and second small flaps 78.1, 78.2 connected to two opposite side walls different from those to which the first and second large flaps 72, 72' are connected.
  • the first and second small flaps 78.1, 78.2 are connected to the first and third side walls 48, 52 and positioned between the first and second large flaps 72, 72' when the bottom 46 is formed.
  • the first and second small flaps 78.1, 78.2 each comprise at least one cutout 80 to clear each through-hole 72.1' of the second large flap 72'.
  • the bottom 46 could be an automatic bottom or any other bottom comprising flaps connected together by any suitable means.
  • the glue is isolated from the tray 44 by at least one flap.
  • the tray 44 When the tray 44 is not immobilized by gluing, it can be immobilized on the bottom 46 by coming into contact or almost into contact over its entire periphery with the four side walls 48, 50, 52, 54, as illustrated in FIG. 14.
  • the collar C44.1 has an excess length so that, for equal capacity, the periphery of the tray 44 is in contact with the four side walls 48, 50, 52, 54 or very slightly spaced from the latter.
  • the box 42 comprises a lid 82, square or rectangular, for closing the opening 70 when the box 42 is in the deployed state, which has first and second sides 84.1, 84.2 connected respectively to the upper edges 62 of the second and fourth side walls 50, 54 by fold lines.
  • This lid 82 comprises at least one fold line 86 located between the first and second sides 84.1, 84.2, substantially parallel to the first and second sides 84.1, 84.2, allowing the lid 82 to be folded when the box 42 is in the folded state.
  • the cover 82 comprises a single fold line 86 located substantially equidistant from the first and second sides 84.1, 84.2 and dividing the cover into two substantially equal zones 88.1, 88.2, the first zone 88.1 being adjacent to the second side wall 50, the second zone 88.2 being adjacent to the fourth wall 5.
  • the first and second zones are positioned between the second and fourth side walls 50, 54 substantially in line with the opening 70, as illustrated in FIG. 5.
  • the first zone 88.1 is located in the extension of the second side wall 50 and the second zone 88.2 is folded against the fourth side wall 54 between the latter and the first zone 88.1, as illustrated in FIG. 3.
  • the first and second zones 88.1, 88.2 are positioned in the extension respectively of the second and fourth side walls 50, 54.
  • the assembly forms a triangle.
  • the cover 82 comprises first and second flaps 90, 92 connected to each other by gluing over their entire width and respectively connected to the second and fourth side walls 50, 54 by fold lines located at the upper edges 62 of the second and fourth side walls 50, 54.
  • the first and second flaps 90, 92 comprise overlapping zones 90.1, 92.1 connected to each other by gluing.
  • the cover 82 comprises a single flap 90 connected by a fold line to the second side wall 50 and connected by gluing to the fourth side wall 54.
  • the flap 90 comprises an end 90.1 configured to be glued against the fourth side wall 54.
  • the invention is not limited to these variants with regard to the number of flaps forming the cover 82.
  • the lid 82 comprises at least one pre-cut line 94 making it possible to separate the lid 82 into two parts, as illustrated in FIG. 9, or to separate it from at least one of the second and fourth side walls 50, 54 in order to at least partially clear the opening 70 and to access the interior of the box 42.
  • the lid 82 may comprise a pre-cut line 94 at the first or second side 84.1, 84.2, at each of the first and second sides 84.1, 84.2 or between the first and second sides 84.1, 84.2.
  • the folding line 86 and the pre-cut line 94 are merged.
  • the box 42 may comprise at least one cutout or pre-cut intersecting with the pre-cut line 94 to facilitate its cutting.
  • the box 42 comprises at least two handles 96, 96' connected to two opposite side walls 48, 50, 52, 54.
  • the handles 96, 96' are positioned at the upper edges 62 of the second and fourth side walls 50, 54.
  • the box 42 comprises a cutout or pre-cutout 96.1, 96.1' straddling the cover 82 and the second or fourth side wall 50, 54 in order to delimit the handle 96, 96'.
  • the handles 96, 96' are positioned at the upper edges 62 of the first and third side walls 48, 52.
  • the box comprises a tab 96.2, 96.2', one end of which is connected to the upper edge 62 of the first or third side wall 48, 52.
  • the invention is not limited to these embodiments for the handles 96, 96' which are configured to allow, by pulling and moving them apart, the box 42 to be deployed.
  • the first and third side walls 48, 52 are not planar but retain a slightly folded shape when the box 42 transitions from the collapsed state to the expanded state.
  • the cover 82 has a dimension L1, distance separating the first and second sides 84.1, 84.2 measured in a direction perpendicular to the first and second sides 84.1, 84.2, greater than the length L0 of each upper edge 62 of the first and third side walls 48, 52, making it possible to obtain mechanical locking of the cover 82 thanks to a toggle effect.
  • the box 42 is configured to occupy a deployed and unlocked state, visible in Figures 5 and 6, in which the fold line 86 is located above the second plane or the upper edges 62 of the first and third side walls 48, 52 as well as a deployed and locked state, visible in Figures 7 and 8, in which the fold line 86 is located below the second plane or the upper edges 62 of the first and third side walls 48,
  • the box 42 When the box 42 is in the deployed and unlocked state, it can return to the collapsed state and there are gaps between the cover 82 and the first and third side walls 48, 52, as illustrated in FIG. 6.
  • the box 42 By pressing the lid 82 toward the bottom 46, the box 42 enters the extended and locked state, as shown in FIG. 7, and remains in this state and can no longer return to the extended and unlocked state. In this state, the box 42 is closed and no popcorn can come out.
  • each of the first and third side walls 48, 52 (those which have first and second oblique fold lines 66, 66' forming an inverted V) is extended by a flap 102 folded against the internal face of the corresponding first or second side wall 48, 52.
  • each flap 102 comprises fold lines in the extension of the oblique fold lines 66, 66'.
  • the box 42 is obtained from a blank 98 cut flat.
  • the first side wall 48 comprises an extension 100, opposite the second side wall 50, glued against the fourth side wall 54 to form a tube.
  • the tubes are stored flat, the flaps 72, 72', 78.1, 78.2 of the bottom 46 as well as the flaps 90, 92 of the cover 82 being located in the extension of the side walls 48, 50, 52, 54, the first and second side walls 48, 50 being pressed against the third and fourth side walls 52, 54.
  • the side walls 48, 50, 52, 54 are separated so as to form a tube.
  • the large and small flaps 72, 72', 78.1, 78.2 are folded and glued together so as to form the bottom 46.
  • the tray 44 is placed on the bottom 46 and held by means of the glue 76, used to glue the large and small flaps 72, 72', 78.1, 78.2 together, which passes through the through holes 72.1'.
  • the flap(s) 90, 92 is (or are) folded and glued so as to form the cover 82.
  • the box 42 is folded along the lower fold lines 60, the first and second oblique fold lines 66, 66' and the fold line 86 of the cover 82.
  • the tray 44 being stationary relative to the bottom 46, the box 42 has a section in a plane parallel to the bottom 46 greater than that of the tray 44, unlike the prior art which provides a box with a section substantially identical to that of the tray. Consequently, the box has a height in the deployed state less than that of the boxes of the prior art, which makes it possible to use cooking appliances of smaller dimensions.
  • the flap(s) 90, 92 when the flap(s) 90, 92 is (or are) glued and forms the cover 82, the latter has two opposite ends connected to the rest of the box 42, which simplifies the folding of the box 42.
  • the box 42 does not have any flap or flap with free ends as in the case of the box of the prior art, visible in Figures 1 and 2, which makes it difficult to automate the folding of the box.
  • the side walls 48, 50, 52 and 54 only comprise a limited number of fold lines 60, 66, 66'.
  • the first and third side walls 48, 52 each comprise a single fold line 60 parallel to the bottom 46 instead of two according to the prior art and V-shaped fold lines instead of X-shaped fold lines (equivalent to two Vs).
  • the second and fourth side walls 50, 54 each comprise a single fold line 60 parallel to the bottom 46 instead of two according to the prior art.
  • This limited number of fold lines makes it possible to limit the risks of inadequate deformations of the box 42 when changing from the deployed state to the folded state, which simplifies the automation of the folding of the box 42 to the folded state.
  • the box can occupy a deployed and locked state in which it is completely closed, even in the absence of a flap in the extension of the first and third side walls 48, 52.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)

Abstract

The invention relates to a box for packaging and cooking popcorn, which box comprises a bottom (46) and first, second, third and fourth side walls (48, 50, 52, 54) which comprise a lower folding line (60) substantially parallel to the bottom (46), each of the first and third side walls (48, 52) comprising first and second oblique folding lines (66, 66') which form an inverted V, the box being configured to adopt a folded state as well as an unfolded state, in which unfolded state the upper edges (62) define an opening (70). According to the invention, the box (42) comprises a lid (82) configured to close the opening (70) when the box (42) is in the unfolded state, the lid (82) being connected to the second and fourth side walls (50, 54) and comprising at least one folding line (86) which allows it to be folded when the box (42) is in the folded state.

Description

Boîte de conditionnement et de cuisson de pop-corn Popcorn packaging and cooking box

La présente demande se rapporte à une boîte de conditionnement et de cuisson de pop-corn ainsi qu'à un dispositif comprenant ladite boîte. The present application relates to a box for packaging and cooking popcorn and to a device comprising said box.

Selon un mode de réalisation décrit dans le document W02004032633 et visible sur les figures 1 et 2, un dispositif de conditionnement et de cuisson de pop-corn comprend une boîte 10 en carton pliable ainsi qu'une barquette, contenant des grains de maïs à cuire, positionnée dans la barquette. According to an embodiment described in document WO2004032633 and visible in figures 1 and 2, a device for packaging and cooking popcorn comprises a foldable cardboard box 10 as well as a tray, containing corn kernels to be cooked, positioned in the tray.

La barquette est généralement obtenue par thermoformage et comprend un contenant qui présente un revêtement favorisant l'absorption de l'énergie des ondes électromagnétiques également appelé « susceptor ». La barquette comprend un opercule pour la fermer, ledit opercule étant collé en périphérie du contenant à l'aide d'une colle thermofusible. La barquette assure un conditionnement étanche des grains de maïs et des adjuvants tels que du sucre ou de l'huile végétale par exemple. The tray is generally obtained by thermoforming and includes a container which has a coating which promotes the absorption of the energy of electromagnetic waves also called "susceptor". The tray includes a lid to close it, said lid being glued to the periphery of the container using a hot melt glue. The tray ensures airtight packaging of corn grains and adjuvants such as sugar or vegetable oil for example.

La boîte 10 comprend en partie inférieure un premier volume 12 non pliable surmonté d'un second volume 14 pliable et rétractable qui permet de fortement réduire le volume de la boîte 10 lors des phases de transport, de stockage et sur les lieux de vente. The box 10 comprises in the lower part a first non-foldable volume 12 surmounted by a second foldable and retractable volume 14 which makes it possible to significantly reduce the volume of the box 10 during transport, storage and at the point of sale.

La boîte 10 en carton comprend un fond 16, quatre parois latérales 18.1 à 18.4 et un dessus 20. Chaque paroi latérale 18.1 à 18.4 comprend une première ligne de pliage 22, parallèle et faiblement espacée (de l'ordre de 1 cm) du fond 16, ainsi qu'une seconde ligne de pliage 24 médiane parallèle à la première ligne de pliage 22 et disposée à équidistance de la première ligne de pliage 22 et du dessus 20. The cardboard box 10 comprises a base 16, four side walls 18.1 to 18.4 and a top 20. Each side wall 18.1 to 18.4 comprises a first folding line 22, parallel and slightly spaced (of the order of 1 cm) from the base 16, as well as a second median folding line 24 parallel to the first folding line 22 and arranged equidistant from the first folding line 22 and the top 20.

Deux parois latérales 18.2 et 18.4 opposées comprennent, en plus des première et seconde lignes de pliage, deux lignes de pliage en diagonale 26 dans la partie des parois latérales située au-dessus de la première ligne de pliage 22. Two opposite side walls 18.2 and 18.4 comprise, in addition to the first and second fold lines, two diagonal fold lines 26 in the portion of the side walls located above the first fold line 22.

La boîte 10 peut occuper une position de stockage, visible sur la partie (A) de la figure 1, dans laquelle les parties de parois latérales 18.1 à 18.4 situées au-dessus des premières lignes de pliage 22 sont plaquées les unes contre les autres, au-dessus du premier volume 12 situé sous les premières lignes de pliage 22 et contenant la barquette, ainsi qu'une position déployée, visible sur la partie (B) de la figure 1, dans laquelle les parois latérales 18.1 à 18.4 sont dépliées et délimitent un volume important permettant de cuire les grains de maïs. The box 10 can occupy a storage position, visible in part (A) of figure 1, in which the side wall parts 18.1 to 18.4 located above the first folding lines 22 are pressed against each other, above the first volume 12 located under the first folding lines 22 and containing the tray, as well as a deployed position, visible in part (B) of figure 1, in which the side walls 18.1 to 18.4 are unfolded and delimit a large volume allowing the corn grains to be cooked.

Comme illustré sur la figure 2, le dessus 20 de la boîte comprend deux rabats 28.1, 28.2 reliés aux parois latérales 18.2 et 18.4 avec les lignes de pliage en diagonale 26 ainsi que deux volets 30.1 et 30.2 reliés aux autres parois latérales 18.1 et 18.3. Lorsqu'ils sont rabattus au-dessus des rabats 28.1, 28.2, les volets 30.1 et 30.2 se chevauchent légèrement de manière à fermer la boîte. As illustrated in Figure 2, the top 20 of the box comprises two flaps 28.1, 28.2 connected to the side walls 18.2 and 18.4 with the diagonal fold lines 26 as well as two flaps 30.1 and 30.2 connected to the other side walls 18.1 and 18.3. When folded over the flaps 28.1, 28.2, the flaps 30.1 and 30.2 overlap slightly so as to close the box.

Selon le document W02004032633, les volets 30.1 et 30.2 comprennent des formes qui coopèrent de manière à les maintenir en position fermée. Ainsi, chaque volet comprend une oreille 32.1 et 32.2 articulée par rapport au reste du volet 30.1, 30.2 selon une ligne de pliage 34. Les oreilles 32.1 et 32.2 sont orientées en sens contraire et forment des crochets qui coopèrent l'un avec l'autre de manière à maintenir les volets en position fermée. According to document WO2004032633, the flaps 30.1 and 30.2 comprise shapes which cooperate so as to maintain them in the closed position. Thus, each flap comprises an ear 32.1 and 32.2 hinged relative to the rest of the flap 30.1, 30.2 along a fold line 34. The ears 32.1 and 32.2 are oriented in opposite directions and form hooks which cooperate with each other so as to maintain the flaps in the closed position.

La boîte est réalisée à partir d'un flan en carton. The box is made from a cardboard blank.

Cette boîte 10 est plus particulièrement astucieuse car elle occupe un volume restreint lors du transport et du stockage et offre un grand volume fermé par les rabats 28.1, 28.2 et les volets 30.1 et 30.2 lors de la cuisson du maïs. This box 10 is particularly clever because it takes up a small volume during transport and storage and offers a large volume closed by the flaps 28.1, 28.2 and the flaps 30.1 and 30.2 when cooking the corn.

En raison de la présence du système d'accroche des volets, la fermeture de cette boîte peut difficilement être automatisée. Due to the presence of the shutter hanging system, the closing of this box can hardly be automated.

Pour remédier à cet inconvénient, le document WO2014064342 propose une boîte qui comprend, au lieu des deux oreilles, une languette reliée à un premier volet ainsi qu'une fente prévue au niveau d'un deuxième volet et configurée pour recevoir la languette. La languette et la fente ont des formes particulières pour permettre une automatisation de l'insertion de la languette dans la fente et ainsi la fermeture de la boîte. To overcome this drawback, document WO2014064342 proposes a box which comprises, instead of the two ears, a tab connected to a first flap as well as a slot provided at the level of a second flap and configured to receive the tab. The tab and the slot have particular shapes to allow automation of the insertion of the tab into the slot and thus the closing of the box.

Une chaîne de conditionnement permettant de mettre en forme la boîte décrite dans le document WO2014064342, de fermer son fond, d'insérer une barquette dans la boîte, de refermer le dessus de la boîte et de replier la boîte dans sa position de stockage est relativement complexe à régler. A packaging line for shaping the box described in WO2014064342, closing its bottom, inserting a tray into the box, closing the top of the box and folding the box into its storage position is relatively complex to adjust.

Le document US2005048170 propose un dispositif de conditionnement et de cuisson de pop- corn comprenant une boîte qui comprend un fond ainsi que quatre parois latérales comprenant chacune une première ligne de pliage sensiblement parallèle au fond. Deux parois latérales opposées comprennent deux lignes de pliages en V inversé positionnées au-dessus de la première ligne de pliage. Grâce à ces lignes de pliage en V, les parties supérieures des parois latérales situées au-dessus de la première ligne de pliage peuvent être repliées pour fermer la boîte. Ainsi, cette boîte est configurée pour occuper un premier état compact dans lequel les parties supérieures des parois latérales sont repliées ainsi qu'un deuxième état déployé dans lequel les parties supérieures des parois latérales sont positionnées dans le prolongement des parties inférieures des parois latérales. Document US2005048170 proposes a device for packaging and cooking popcorn comprising a box which comprises a bottom and four side walls each comprising a first fold line substantially parallel to the bottom. Two opposite side walls comprise two inverted V-shaped fold lines positioned above the first fold line. Thanks to these V-shaped fold lines, the upper parts of the side walls located above the first fold line can be folded to close the box. Thus, this box is configured to occupy a first compact state in which the upper parts of the side walls are folded and a second deployed state in which the upper parts of the side walls are positioned in line with the lower parts of the side walls.

Contrairement aux modes de réalisation décrits dans les documents W02004032633 et WO2014064342, lorsque la boîte est dans la position déployée, elle ne comprend aucun couvercle pour conserver les grains de maïs à l'intérieur de la boîte lors de leur cuisson. Par conséquent, le dispositif de conditionnement et de cuisson décrit dans le document US2005048170 comprend un revêtement de type « susceptor » recouvrant le fond ainsi qu'un film recouvrant les grains de maïs posés sur le fond, ledit film s'étendant contre la face intérieure des parois latérales et étant fixé au niveau des bords supérieurs des parois latérales. Ainsi, lors du stockage, le film est plaqué sur les grains de maïs et contre les parois latérales. Lors de la cuisson, le film s'écarte des parois latérales et permet de conserver le pop-corn entre la boîte et le film. Unlike the embodiments described in WO2004032633 and WO2014064342, when the box is in the deployed position, it does not include any cover to keep the corn kernels inside the box while they are being cooked. Therefore, the packaging and cooking device described in US2005048170 includes a "susceptor" type coating covering the bottom as well as a film covering the corn kernels placed on the bottom, said film extending against the inner face of the side walls and being fixed at the upper edges of the side walls. Thus, during storage, the film is pressed against the corn kernels and against the side walls. During cooking, the film moves away from the side walls and allows the popcorn to be kept between the box and the film.

Le mode de réalisation décrit dans le document US2005048170 nécessite de prévoir une boîte en carton dont les faces intérieures et plus particulièrement le fond doivent être recouvertes d'un revêtement formant une barrière à l'huile, ce qui conduit à sensiblement augmenter le prix de la boîte et à générer des déchets plus difficiles à traiter et à réutiliser. The embodiment described in document US2005048170 requires providing a cardboard box whose interior faces and more particularly the bottom must be covered with a coating forming an oil barrier, which leads to a significant increase in the price of the box and to generating waste that is more difficult to treat and reuse.

La présente invention vise à remédier à tout ou partie des inconvénients de l'art antérieur.The present invention aims to remedy all or part of the drawbacks of the prior art.

A cet effet, l'invention a pour objet une boîte de conditionnement et de cuisson de pop-corn comprenant un fond ainsi que des première, deuxième, troisième et quatrième parois latérales reliées deux à deux ; chacune des première, deuxième, troisième et quatrième parois latérales s'étendant entre un bord inférieur attenant au fond et un bord supérieur comportant une ligne de pliage inférieure sensiblement parallèle au fond ; chacune des première et troisième parois latérales comportant des première et deuxième lignes de pliage obliques formant un V inversé, la boîte étant configurée pour occuper un état replié ainsi qu'un état déployé dans lequel les bords supérieurs des première, deuxième, troisième et quatrième parois latérales délimitent une ouverture. To this end, the invention relates to a box for packaging and cooking popcorn comprising a base and first, second, third and fourth side walls connected in pairs; each of the first, second, third and fourth side walls extending between a lower edge adjoining the base and an upper edge comprising a lower fold line substantially parallel to the base; each of the first and third side walls comprising first and second oblique fold lines forming an inverted V, the box being configured to occupy a folded state as well as a deployed state in which the upper edges of the first, second, third and fourth side walls delimit an opening.

Selon l'invention, la boîte comprend un couvercle, configuré pour fermer l'ouverture lorsque la boîte est à l'état déployé, qui présente des premier et deuxième côtés reliés respectivement aux bords supérieurs des deuxième et quatrième parois latérales par des lignes de pliage, le couvercle comportant au moins une ligne de pliage permettant de le plier lorsque la boîte est à l'état replié. According to the invention, the box comprises a lid, configured to close the opening when the box is in the deployed state, which has first and second sides connected respectively to the upper edges of the second and fourth side walls by fold lines, the cover comprising at least one fold line allowing it to be folded when the box is in the folded state.

Cette solution permet d'obtenir une boîte compacte et facile à replier, ce qui permet de simplifier une chaîne de conditionnement permettant de remplir les boîtes, de les fermer et de les replier. This solution provides a compact and easy-to-fold box, simplifying a packaging line for filling, closing and folding boxes.

D'autres caractéristiques et avantages ressortiront de la description de l'invention qui va suivre, description donnée à titre d'exemple uniquement, en regard des dessins annexés parmi lesquels : Other characteristics and advantages will emerge from the description of the invention which follows, a description given by way of example only, with reference to the appended drawings, among which:

La figure 1 est une représentation d'une boîte de conditionnement et de cuisson de pop-corn illustrant un mode de réalisation de l'art antérieur, dans une position repliée sur la partie (A) et une position déployée sur la partie (B), Figure 1 is a representation of a popcorn packaging and cooking box illustrating a prior art embodiment, in a folded position on part (A) and an extended position on part (B),

La figure 2 est une vue de face d'un flan en carton permettant de former la boîte visible sur la figure 1, Figure 2 is a front view of a cardboard blank for forming the box shown in Figure 1,

La figure 3 est une vue en perspective d'une boîte de conditionnement et de cuisson de pop-corn illustrant un mode de réalisation de l'invention à l'état replié, Figure 3 is a perspective view of a popcorn packaging and cooking box illustrating one embodiment of the invention in a collapsed state,

La figure 4 est une vue latérale de la boîte visible sur la figure 3 en cours de déploiement, Figure 4 is a side view of the box seen in Figure 3 being deployed,

La figure 5 est une vue en perspective de la boîte visible sur la figure 3 à l'état déployé et non verrouillé, Figure 5 is a perspective view of the box shown in Figure 3 in the deployed and unlocked state,

La figure 6 est une coupe transversale, selon le plan PC de la figure 5, de la boîte visible sur la figure 3 à l'état déployé et non verrouillé, Figure 6 is a cross-section, along the plane PC of Figure 5, of the box visible in Figure 3 in the deployed and unlocked state,

La figure 7 est une coupe transversale de la boîte visible sur la figure 3 à l'état déployé et verrouillé, Figure 7 is a cross-section of the box seen in Figure 3 in the deployed and locked state,

La figure 8 est une vue en perspective de la boîte visible sur la figure 3 à l'état déployé et verrouillé Figure 8 is a perspective view of the box shown in Figure 3 in the deployed and locked state.

La figure 9 est une vue en perspective de la boîte visible sur la figure 3 à l'état ouvert, La figure 10 est une vue de face d'un flan d'une boîte de conditionnement et de cuisson de pop-corn illustrant un mode de réalisation de l'invention, Figure 9 is a perspective view of the box shown in Figure 3 in the open state, Figure 10 is a front view of a blank of a popcorn packaging and cooking box illustrating an embodiment of the invention,

La figure 11 est une vue de face d'un flan d'une boîte de conditionnement et de cuisson de pop-corn illustrant un autre mode de réalisation de l'invention, Figure 11 is a front view of a blank of a popcorn packaging and cooking box illustrating another embodiment of the invention,

La figure 12 est une vue de face d'un flan d'une boîte de conditionnement et de cuisson de pop-corn illustrant un autre mode de réalisation de l'invention, La figure 13 est une coupe d'une partie inférieure d'un dispositif de conditionnement et de cuisson de pop-corn illustrant un mode de réalisation de l'invention, Figure 12 is a front view of a blank of a popcorn packaging and cooking box illustrating another embodiment of the invention, Figure 13 is a sectional view of a lower portion of a popcorn packaging and cooking device illustrating one embodiment of the invention,

La figure 14 est une coupe d'une partie inférieure d'un dispositif de conditionnement et de cuisson de pop-corn illustrant un autre mode de réalisation de l'invention.Figure 14 is a sectional view of a lower portion of a popcorn packaging and cooking device illustrating another embodiment of the invention.

Selon un mode de réalisation visible sur les figures 3 à 9 et 13, un dispositif de conditionnement et de cuisson de pop-corn 40 comprend une boîte 42 dans laquelle est positionnée une barquette 44 (visible sur la figure 13). According to an embodiment visible in figures 3 to 9 and 13, a device for packaging and cooking popcorn 40 comprises a box 42 in which a tray 44 is positioned (visible in figure 13).

La barquette 44 est généralement obtenue par thermoformage et comprend un contenant 44.1 qui comporte un fond F44.1, une collerette périphérique C44.1 ainsi qu'un revêtement en matériau favorisant l'absorption de l'énergie des ondes électromagnétiques également appelé « susceptor ». La barquette 44 comprend un opercule 44.2 pour la fermer, collé en périphérie du contenant 44.1 à l'aide d'une colle thermofusible 44.3. La barquette 44 assure un conditionnement étanche des grains de maïs et des adjuvants tels que du sucre ou de l'huile végétale par exemple. La barquette 44 présente une hauteur H44 correspondant à la dimension séparant le fond F44.1 et l'opercule 44.2 mesurée selon une direction perpendiculaire au fond F44.1. The tray 44 is generally obtained by thermoforming and comprises a container 44.1 which has a base F44.1, a peripheral collar C44.1 as well as a coating made of a material promoting the absorption of the energy of electromagnetic waves also called a “susceptor”. The tray 44 comprises a lid 44.2 for closing it, glued to the periphery of the container 44.1 using a hot-melt glue 44.3. The tray 44 ensures leak-proof packaging of the corn grains and additives such as sugar or vegetable oil for example. The tray 44 has a height H44 corresponding to the dimension separating the base F44.1 and the lid 44.2 measured in a direction perpendicular to the base F44.1.

La boîte 42 comprend en partie inférieure un premier volume 42.1 non pliable surmonté d'un deuxième volume 42.2 pliable qui permet de fortement réduire le volume intérieur de la boîte 42 lors des phases de transport, de stockage et sur les lieux de vente. The box 42 comprises in the lower part a first non-foldable volume 42.1 surmounted by a second foldable volume 42.2 which makes it possible to significantly reduce the interior volume of the box 42 during transport, storage and at the point of sale.

La boîte 42 comprend un fond 46 ainsi que des première, deuxième, troisième et quatrième parois latérales 48, 50, 52, 54 reliées deux à deux par des premières lignes de pliage 56 de manière à former un tube. Selon une configuration, les premières lignes de pliage 56 sont sensiblement évasées. Ainsi, la boîte 42 est sensiblement tronconique, favorisant l'empilement des boîtes 42 les unes dans les autres. En variantes, les premières lignes de pliage 56 pourraient être parallèles entre elles. The box 42 comprises a bottom 46 as well as first, second, third and fourth side walls 48, 50, 52, 54 connected two by two by first fold lines 56 so as to form a tube. According to one configuration, the first fold lines 56 are substantially flared. Thus, the box 42 is substantially frustoconical, promoting the stacking of the boxes 42 inside each other. In variants, the first fold lines 56 could be parallel to each other.

Chacune des première, deuxième, troisième et quatrième parois latérales 48, 50, 52 et 54 comprend un bord inférieur 58 attenant au fond 46 ainsi qu'une ligne de pliage inférieure 60 sensiblement parallèle au fond 46 ou au bord inférieur 58. Each of the first, second, third and fourth side walls 48, 50, 52 and 54 includes a lower edge 58 adjoining the bottom 46 as well as a lower fold line 60 substantially parallel to the bottom 46 or the lower edge 58.

Les distances entre le bord inférieur 58 et la ligne de pliage inférieure 60 des différentes parois latérales 48, 50, 52, 54 sont identiques et sensiblement égales ou très légèrement supérieures à la hauteur H44 de la barquette 44. A titre indicatif, pour chaque paroi latérale 48, 50, 52, 54, la distance séparant le bord inférieur 58 et la ligne de pliage inférieure 60 mesure de l'ordre de 10 à 12 mm. The distances between the lower edge 58 and the lower folding line 60 of the different side walls 48, 50, 52, 54 are identical and substantially equal to or very slightly greater than the height H44 of the tray 44. For information purposes, for each side wall 48, 50, 52, 54, the distance separating the lower edge 58 and the lower fold line 60 measures in the order of 10 to 12 mm.

La zone de la boîte 42 située entre le fond 46 et un premier plan passant par les lignes de pliage inférieures 60 correspond au premier volume 42.1 non pliable, configuré pour contenir la barquette 44. The area of the box 42 located between the bottom 46 and a first plane passing through the lower folding lines 60 corresponds to the first non-foldable volume 42.1, configured to contain the tray 44.

Les première, deuxième, troisième et quatrième parois latérales 48, 50, 52 et 54 s'étendent chacune entre le bord inférieur 58 et un bord supérieur 62 sensiblement parallèle au bord inférieur 58, à la ligne de pliage inférieure 60 ou au fond 46. Les distances entre les lignes de pliage inférieures 60 et les bords supérieurs 62 des différentes parois latérales 48, 50, 52, 54 sont identiques. A titre indicatif, pour chaque paroi latérale 48, 50, 52, 54, la distance séparant la ligne de pliage inférieure 60 et le bord supérieur 62 mesure de l'ordre de 80 mm. Chaque bord supérieur 62 présente une longueur L0 de l'ordre de 160 à 170 mm. Pour chacune des parois latérales 48, 50, 52, 54, la ligne de pliage inférieure 60 et le bord supérieur 62 sont séparés d'une distance sensiblement égale à la moitié de la longueur du bord supérieur 62.The first, second, third and fourth side walls 48, 50, 52 and 54 each extend between the lower edge 58 and an upper edge 62 substantially parallel to the lower edge 58, to the lower fold line 60 or to the bottom 46. The distances between the lower fold lines 60 and the upper edges 62 of the different side walls 48, 50, 52, 54 are identical. For information purposes, for each side wall 48, 50, 52, 54, the distance separating the lower fold line 60 and the upper edge 62 measures of the order of 80 mm. Each upper edge 62 has a length L0 of the order of 160 to 170 mm. For each of the side walls 48, 50, 52, 54, the lower fold line 60 and the upper edge 62 are separated by a distance substantially equal to half the length of the upper edge 62.

La ligne de pliage inférieure 60 divise chaque paroi latérale 48, 50, 52, 54 en une partie inférieure 64.1 entre le bord inférieur 58 et la ligne de pliage inférieure 60 ainsi qu'une partie supérieure 64.2 entre la ligne de pliage inférieure 60 et le bord supérieur 62. The lower fold line 60 divides each side wall 48, 50, 52, 54 into a lower portion 64.1 between the lower edge 58 and the lower fold line 60 and an upper portion 64.2 between the lower fold line 60 and the upper edge 62.

Chacune des première et troisième parois latérales 48, 52 comprend des première et deuxième lignes de pliage obliques 66, 66' formant un V inversé. Les première et deuxième lignes de pliage obliques 66.1, 66.2 présentent des premières extrémités 66.1, 66.1' communes situées approximativement au niveau du milieu du bord supérieur 62 ainsi que des deuxièmes extrémités 66.2, 66.2' situées aux extrémités de la ligne de pliage inférieure 60. Les première et deuxième lignes de pliage obliques 66, 66' divisent chacune des première et troisième parois latérales 48, 52 en un premier triangle central 68.1 attenant à la ligne de pliage inférieure 60 ainsi que des deuxième et troisième triangles 68.2, 68.3 positionnés de part et d'autre du premier triangle central 68.1 et attenants au bord supérieur 62. Each of the first and third side walls 48, 52 comprises first and second oblique fold lines 66, 66' forming an inverted V. The first and second oblique fold lines 66.1, 66.2 have common first ends 66.1, 66.1' located approximately at the middle of the upper edge 62 as well as second ends 66.2, 66.2' located at the ends of the lower fold line 60. The first and second oblique fold lines 66, 66' divide each of the first and third side walls 48, 52 into a first central triangle 68.1 adjoining the lower fold line 60 as well as second and third triangles 68.2, 68.3 positioned on either side of the first central triangle 68.1 and adjoining the upper edge 62.

La zone de la boîte 42 située entre le premier plan passant par les lignes de pliage inférieures 60 et un deuxième plan passant par les bords supérieurs 62 correspond au deuxième volume 42.2 pliable. The area of the box 42 located between the first plane passing through the lower fold lines 60 and a second plane passing through the upper edges 62 corresponds to the second foldable volume 42.2.

Ainsi, la boîte 42 est configurée pour occuper un état replié, visible sur la figure 3, dans lequel les deuxième et quatrièmes parois latérales 50, 54 sont sensiblement parallèles au fond 46 et dans lequel, pour chacune des première et troisième parois latérales 48, 52, le premier triangle central 68.1 est plié parallèlement au fond 46 grâce à la ligne de pliage inférieure 60, les deuxième et troisième triangles 68.2, 68.3 étant pliés contre le premier triangle centralThus, the box 42 is configured to occupy a folded state, visible in FIG. 3, in which the second and fourth side walls 50, 54 are substantially parallel to the bottom 46 and in which, for each of the first and third side walls 48, 52, the first central triangle 68.1 is folded parallel to the bottom 46 by means of the lower folding line 60, the second and third triangles 68.2, 68.3 being folded against the first central triangle

68.1 grâce aux première et deuxième lignes de pliage obliques 66, 66', les parties supérieures68.1 thanks to the first and second oblique fold lines 66, 66', the upper parts

64.2 des deuxième et quatrième parois 50, 54 étant rabattus contre les deuxième et troisième triangles 68.2, 68.3 grâce aux lignes de pliage inférieures 60. 64.2 of the second and fourth walls 50, 54 being folded against the second and third triangles 68.2, 68.3 by means of the lower fold lines 60.

La boîte 42 est également configurée pour occuper un état déployé, visible sur les figures 5, 8 et 9, dans lequel les première, deuxième, troisième et quatrième parois latérales sont sensiblement planes. Les bords supérieurs 62 des première, deuxième, troisième et quatrième parois latérales 48, 50, 52, 54 délimitent une ouverture 70 (visible sur la figure 9) lorsque la boîte 42 est à l'état déployé. The box 42 is also configured to occupy a deployed state, visible in Figures 5, 8 and 9, in which the first, second, third and fourth side walls are substantially planar. The upper edges 62 of the first, second, third and fourth side walls 48, 50, 52, 54 define an opening 70 (visible in Figure 9) when the box 42 is in the deployed state.

Le fond 46 comprend au moins un grand rabat 72 relié à au moins une des première, deuxième, troisième et quatrième parois latérales 48, 50, 52, 54 par une ligne de pliage située au niveau du bord inférieur 58 de la paroi latérale correspondante. The bottom 46 comprises at least one large flap 72 connected to at least one of the first, second, third and fourth side walls 48, 50, 52, 54 by a fold line located at the lower edge 58 of the corresponding side wall.

Selon un mode de réalisation privilégié visible sur les figures 10 à 12, le fond 46 comprend des premier et deuxième grands rabats 72, 72' reliés respectivement à deux parois latérales opposées, notamment aux deuxième et quatrième parois latérales 50, 54, par des lignes de pliage situées au niveau des bords inférieurs 58. Le deuxième grand rabat 72' est positionné entre le premier grand rabat 72 et l'intérieur de la boîte 42 et présente une face extérieure F72' plaquée contre une face intérieure F72 du premier grand rabat 72. Ainsi, comme illustré sur la figure 13, la barquette 44 est positionnée contre le deuxième grand rabat 72'. According to a preferred embodiment visible in Figures 10 to 12, the bottom 46 comprises first and second large flaps 72, 72' connected respectively to two opposite side walls, in particular to the second and fourth side walls 50, 54, by fold lines located at the level of the lower edges 58. The second large flap 72' is positioned between the first large flap 72 and the interior of the box 42 and has an outer face F72' pressed against an inner face F72 of the first large flap 72. Thus, as illustrated in Figure 13, the tray 44 is positioned against the second large flap 72'.

Selon ce mode de réalisation, le premier grand rabat 72 est dimensionné pour s'étendre sur toute la superficie du fond 46. Le deuxième grand rabat 72' est dimensionné pour s'étendre sur au moins une partie de la superficie du fond 46. According to this embodiment, the first large flap 72 is sized to extend over the entire surface area of the bottom 46. The second large flap 72' is sized to extend over at least a portion of the surface area of the bottom 46.

Le fond 46 comprend une liaison par collage 74 reliant les premier et deuxième grands rabats 72, 72', plus particulièrement la face intérieure F72 du premier grand rabat 72 et la face extérieure F72' du deuxième grand rabat 72'. The bottom 46 comprises a bonding connection 74 connecting the first and second large flaps 72, 72', more particularly the inner face F72 of the first large flap 72 and the outer face F72' of the second large flap 72'.

Selon une configuration, le deuxième grand rabat 72' présente au moins un orifice traversant 72.1'. Ainsi, lorsque la face intérieure F72 du premier grand rabat 72 est encollée et plaquée contre la face extérieure F72' du deuxième grand rabat 72', la colle 76 positionnée au droit de l'orifice traversant 72.1' est utilisée pour fixer la barquette 44 contre le fond 46, comme illustré sur la figure 13. Selon cette configuration, la liaison par collage 74 reliant les premier et deuxième grands rabats 72, 72' assure une liaison entre le fond 46 et la barquette 44, permettant d'immobiliser cette dernière dans la boîte 42. According to one configuration, the second large flap 72' has at least one through-hole 72.1'. Thus, when the inner face F72 of the first large flap 72 is glued and pressed against the outer face F72' of the second large flap 72', the glue 76 positioned in line with the through-hole 72.1' is used to fix the tray 44 against the bottom 46, as illustrated in FIG. 13. According to this configuration, the adhesive connection 74 connecting the first and second large flaps 72, 72' provide a connection between the bottom 46 and the tray 44, allowing the latter to be immobilized in the box 42.

Selon un mode de réalisation, le fond 46 comprend des premier et deuxième petits rabats 78.1, 78.2 reliés à deux parois latérales opposées différentes de celles auxquelles sont reliés les premier et deuxième grands rabats 72, 72'. Selon une configuration, les premier et deuxième petits rabats 78.1, 78.2 sont reliés aux première et troisième parois latérales 48, 52 et positionnés entre les premier et deuxième grands rabats 72, 72' lorsque le fond 46 est formé. Les premier et deuxième petits rabats 78.1, 78.2 comprennent chacun au moins une découpe 80 pour dégager chaque orifice traversant 72.1' du deuxième grand rabat 72'. According to one embodiment, the bottom 46 comprises first and second small flaps 78.1, 78.2 connected to two opposite side walls different from those to which the first and second large flaps 72, 72' are connected. According to one configuration, the first and second small flaps 78.1, 78.2 are connected to the first and third side walls 48, 52 and positioned between the first and second large flaps 72, 72' when the bottom 46 is formed. The first and second small flaps 78.1, 78.2 each comprise at least one cutout 80 to clear each through-hole 72.1' of the second large flap 72'.

Bien entendu, l'invention n'est pas limitée à ce mode de réalisation pour le fond 46. Le fond 46 pourrait être un fond automatique ou tout autre fond comportant des volets reliés entre eux par tout moyen approprié. Of course, the invention is not limited to this embodiment for the bottom 46. The bottom 46 could be an automatic bottom or any other bottom comprising flaps connected together by any suitable means.

En variante, aucun orifice traversant 72.1' n'est prévu. Ainsi, la colle est isolée de la barquette 44 par au moins un volet. Alternatively, no through hole 72.1' is provided. Thus, the glue is isolated from the tray 44 by at least one flap.

Lorsque la barquette 44 n'est pas immobilisée par collage, elle peut être immobilisée sur le fond 46 en venant en contact ou quasiment en contact sur toute sa périphérie avec les quatre parois latérales 48, 50, 52, 54, comme illustré sur la figure 14. Dans ce cas, la collerette C44.1 présente une surlongueur de sorte qu'à contenance égale, la périphérie de la barquette 44 soit en contact avec les quatre parois latérales 48, 50, 52, 54 ou très faiblement espacée de ces dernières. Cette solution permet d'obtenir un centrage et une immobilisation de la barquette 44 et favorise le pliage des lignes de pliage inférieures 60. When the tray 44 is not immobilized by gluing, it can be immobilized on the bottom 46 by coming into contact or almost into contact over its entire periphery with the four side walls 48, 50, 52, 54, as illustrated in FIG. 14. In this case, the collar C44.1 has an excess length so that, for equal capacity, the periphery of the tray 44 is in contact with the four side walls 48, 50, 52, 54 or very slightly spaced from the latter. This solution makes it possible to obtain centering and immobilization of the tray 44 and promotes the folding of the lower folding lines 60.

La boîte 42 comprend un couvercle 82, carré ou rectangulaire, pour fermer l'ouverture 70 lorsque la boîte 42 est à l'état déployé, qui présente des premier et deuxième côtés 84.1, 84.2 reliés respectivement aux bords supérieurs 62 des deuxième et quatrième parois latérales 50, 54 par des lignes de pliage. Ce couvercle 82 comprend au moins une ligne de pliage 86 située entre les premier et deuxième côtés 84.1, 84.2, sensiblement parallèle aux premier et deuxième côtés 84.1, 84.2, permettant de plier le couvercle 82 lorsque la boîte 42 est à l'état replié. The box 42 comprises a lid 82, square or rectangular, for closing the opening 70 when the box 42 is in the deployed state, which has first and second sides 84.1, 84.2 connected respectively to the upper edges 62 of the second and fourth side walls 50, 54 by fold lines. This lid 82 comprises at least one fold line 86 located between the first and second sides 84.1, 84.2, substantially parallel to the first and second sides 84.1, 84.2, allowing the lid 82 to be folded when the box 42 is in the folded state.

Selon une configuration, le couvercle 82 comprend une unique ligne de pliage 86 située sensiblement à équidistance des premier et deuxième côtés 84.1, 84.2 et divisant le couvercle en deux zones 88.1, 88.2 sensiblement égales, la première zone 88.1 étant attenante à la deuxième paroi latérale 50, la deuxième zone 88.2 étant attenante à la quatrième paroi latérale 54. Lorsque la boîte 42 est à l'état déployé, les première et deuxième zones sont positionnées entre les deuxième et quatrième parois latérales 50, 54 sensiblement au droit de l'ouverture 70, comme illustré sur la figure 5. Lorsque la boîte 42 est à l'état replié, la première zone 88.1 est située dans le prolongement de la deuxième paroi latérale 50 et la deuxième zone 88.2 est repliée contre la quatrième paroi latérale 54 entre cette dernière et la première zone 88.1, comme illustré sur la figure 3. Lorsque la boîte 42 est en cours de déploiement, entre les états replié et déployé comme illustré sur la figure 4, les première et deuxième zones 88.1, 88.2 sont positionnées dans le prolongement respectivement des deuxième et quatrième parois latérales 50, 54. Ainsi, en vue de côté, l'ensemble forme un triangle. According to one configuration, the cover 82 comprises a single fold line 86 located substantially equidistant from the first and second sides 84.1, 84.2 and dividing the cover into two substantially equal zones 88.1, 88.2, the first zone 88.1 being adjacent to the second side wall 50, the second zone 88.2 being adjacent to the fourth wall 5. When the box 42 is in the deployed state, the first and second zones are positioned between the second and fourth side walls 50, 54 substantially in line with the opening 70, as illustrated in FIG. 5. When the box 42 is in the folded state, the first zone 88.1 is located in the extension of the second side wall 50 and the second zone 88.2 is folded against the fourth side wall 54 between the latter and the first zone 88.1, as illustrated in FIG. 3. When the box 42 is being deployed, between the folded and deployed states as illustrated in FIG. 4, the first and second zones 88.1, 88.2 are positioned in the extension respectively of the second and fourth side walls 50, 54. Thus, in side view, the assembly forms a triangle.

Selon des variantes visibles sur les figures 10 et 12, le couvercle 82 comprend des premier et deuxième volets 90, 92 reliés entre eux par collage sur toute leur largeur et respectivement reliés aux deuxième et quatrième parois latérales 50, 54 par des lignes de pliage situées au niveau des bords supérieurs 62 des deuxième et quatrième parois latérales 50, 54. Selon une configuration, les premier et deuxième volets 90, 92 comprennent des zones de chevauchement 90.1, 92.1 reliées entre elles par collage. According to variants visible in figures 10 and 12, the cover 82 comprises first and second flaps 90, 92 connected to each other by gluing over their entire width and respectively connected to the second and fourth side walls 50, 54 by fold lines located at the upper edges 62 of the second and fourth side walls 50, 54. According to one configuration, the first and second flaps 90, 92 comprise overlapping zones 90.1, 92.1 connected to each other by gluing.

Selon d'autres variantes visibles sur la figure 11, le couvercle 82 comprend un unique volet 90 relié par une ligne de pliage à la deuxième paroi latérale 50 et relié par collage à la quatrième paroi latérale 54. Selon une configuration, le volet 90 comprend une extrémité 90.1 configurée pour être collée contre la quatrième paroi latérale 54. According to other variants visible in Figure 11, the cover 82 comprises a single flap 90 connected by a fold line to the second side wall 50 and connected by gluing to the fourth side wall 54. According to one configuration, the flap 90 comprises an end 90.1 configured to be glued against the fourth side wall 54.

Bien entendu, l'invention n'est pas limitée à ces variantes en ce qui concerne le nombre de volets formant le couvercle 82. Of course, the invention is not limited to these variants with regard to the number of flaps forming the cover 82.

Selon un mode de réalisation, le couvercle 82 comprend au moins une ligne de prédécoupe 94 permettant de séparer le couvercle 82 en deux parties, comme illustré sur la figure 9, ou de le séparer d'au moins une des deuxième et quatrième parois latérales 50, 54 afin de dégager au moins partiellement l'ouverture 70 et d'accéder à l'intérieur de la boîte 42. Ainsi, le couvercle 82 peut comprendre une ligne de prédécoupe 94 au niveau du premier ou deuxième côté 84.1, 84.2, au niveau de chacun des premier et deuxième côtés 84.1, 84.2 ou entre les premier et deuxième côtés 84.1, 84.2. Selon une configuration, la ligne de pliage 86 et la ligne de prédécoupe 94 sont confondues. La boîte 42 peut comprendre au moins une découpe ou prédécoupe sécante avec la ligne de prédécoupe 94 pour faciliter sa découpe. Selon des modes de réalisation visibles sur les figures 10 à 12, pour faciliter son déploiement, la boîte 42 comprend au moins deux poignées 96, 96' reliées à deux parois latérales 48, 50, 52, 54 opposées. According to one embodiment, the lid 82 comprises at least one pre-cut line 94 making it possible to separate the lid 82 into two parts, as illustrated in FIG. 9, or to separate it from at least one of the second and fourth side walls 50, 54 in order to at least partially clear the opening 70 and to access the interior of the box 42. Thus, the lid 82 may comprise a pre-cut line 94 at the first or second side 84.1, 84.2, at each of the first and second sides 84.1, 84.2 or between the first and second sides 84.1, 84.2. According to one configuration, the folding line 86 and the pre-cut line 94 are merged. The box 42 may comprise at least one cutout or pre-cut intersecting with the pre-cut line 94 to facilitate its cutting. According to embodiments visible in figures 10 to 12, to facilitate its deployment, the box 42 comprises at least two handles 96, 96' connected to two opposite side walls 48, 50, 52, 54.

Selon des modes de réalisation visibles sur les figures 10 et 11, les poignées 96, 96' sont positionnées au niveau des bords supérieurs 62 des deuxième et quatrième parois latérales 50, 54. Selon ces modes de réalisation, pour chaque poignée 96, 96', la boîte 42 comprend une découpe ou prédécoupe 96.1, 96.1' à cheval sur le couvercle 82 et la deuxième ou quatrième paroi latérale 50, 54 afin de délimiter la poignée 96, 96'. According to embodiments visible in Figures 10 and 11, the handles 96, 96' are positioned at the upper edges 62 of the second and fourth side walls 50, 54. According to these embodiments, for each handle 96, 96', the box 42 comprises a cutout or pre-cutout 96.1, 96.1' straddling the cover 82 and the second or fourth side wall 50, 54 in order to delimit the handle 96, 96'.

Selon d'autres modes de réalisation visibles sur la figure 12, les poignées 96, 96' sont positionnées au niveau des bords supérieurs 62 des première et troisième parois latérales 48, 52. Selon ces modes de réalisation, pour chaque poignée 96, 96', la boîte comprend une languette 96.2, 96.2' dont une extrémité est reliée au bord supérieur 62 de la première ou troisième paroi latérale 48, 52. According to other embodiments visible in Figure 12, the handles 96, 96' are positioned at the upper edges 62 of the first and third side walls 48, 52. According to these embodiments, for each handle 96, 96', the box comprises a tab 96.2, 96.2', one end of which is connected to the upper edge 62 of the first or third side wall 48, 52.

Bien entendu, l'invention n'est pas limitée à ces modes de réalisation pour les poignées 96,96' qui sont configurées pour permettre, en les tirant et les écartant, de déployer la boîte 42.Of course, the invention is not limited to these embodiments for the handles 96, 96' which are configured to allow, by pulling and moving them apart, the box 42 to be deployed.

Compte tenu du pliage des première et troisième parois latérales 48, 52 selon les première et deuxième lignes de pliage obliques 66, 66', les première et troisième parois latérales 48, 52 ne sont pas planes mais conservent une forme légèrement pliée lorsque la boîte 42 passe de l'état replié à l'état déployé. Given the folding of the first and third side walls 48, 52 along the first and second oblique fold lines 66, 66', the first and third side walls 48, 52 are not planar but retain a slightly folded shape when the box 42 transitions from the collapsed state to the expanded state.

Selon une particularité de l'invention, le couvercle 82 présente une dimension Ll, distance séparant les premier et deuxième côtés 84.1, 84.2 mesurée selon une direction perpendiculaire aux premier et deuxième côtés 84.1, 84.2, supérieure à la longueur L0 de chaque bord supérieur 62 des première et troisième parois latérales 48, 52, permettant d'obtenir un blocage mécanique du couvercle 82 grâce à un effet de genouillère. According to a feature of the invention, the cover 82 has a dimension L1, distance separating the first and second sides 84.1, 84.2 measured in a direction perpendicular to the first and second sides 84.1, 84.2, greater than the length L0 of each upper edge 62 of the first and third side walls 48, 52, making it possible to obtain mechanical locking of the cover 82 thanks to a toggle effect.

Ainsi, la boîte 42 est configurée pour occuper un état déployé et déverrouillé, visible sur les figures 5 et 6, dans lequel la ligne de pliage 86 est située au-dessus du deuxième plan ou des bords supérieurs 62 des première et troisième parois latérales 48, 52 ainsi qu'un état déployé et verrouillé, visible sur les figures 7 et 8, dans lequel la ligne de pliage 86 est située au-dessous du deuxième plan ou des bords supérieurs 62 des première et troisième parois latérales 48,Thus, the box 42 is configured to occupy a deployed and unlocked state, visible in Figures 5 and 6, in which the fold line 86 is located above the second plane or the upper edges 62 of the first and third side walls 48, 52 as well as a deployed and locked state, visible in Figures 7 and 8, in which the fold line 86 is located below the second plane or the upper edges 62 of the first and third side walls 48,

52. Lorsque la boîte 42 est à l'état déployé et déverrouillé, elle peut revenir à l'état replié et il existe des espaces entre le couvercle 82 et les première et troisième parois latérales 48, 52, comme illustré sur la figure 6. 52. When the box 42 is in the deployed and unlocked state, it can return to the collapsed state and there are gaps between the cover 82 and the first and third side walls 48, 52, as illustrated in FIG. 6.

En appuyant sur le couvercle 82 en direction du fond 46, la boîte 42 passe à l'état déployé et verrouillé, comme illustré sur la figure 7, et reste dans cet état et ne peut plus revenir à l'état déployé et déverrouillé. Dans cet état, la boîte 42 est fermée et aucun pop-corn ne peut en sortir. By pressing the lid 82 toward the bottom 46, the box 42 enters the extended and locked state, as shown in FIG. 7, and remains in this state and can no longer return to the extended and unlocked state. In this state, the box 42 is closed and no popcorn can come out.

Selon un mode de réalisation visible sur la figure 11, chacune des première et troisième parois latérales 48, 52 (celles qui présentent des première et deuxième lignes de pliage obliques 66, 66' formant un V inversé) est prolongée par un rabat 102 rabattu contre la face interne de la première ou deuxième paroi latérale 48, 52 correspondante. Pour pouvoir plier les première et deuxième parois latérales 48, 52, chaque rabat 102 comprend des lignes de pliage dans le prolongement des lignes de pliage obliques 66, 66'. Ces rabats 102 permettent de rigidifier les première et deuxième parois latérales 48, 52, ce qui permet d'éviter que lesdites parois latérales 48, 52 ne s'écartent du couvercle 82 en fin de cuisson, lorsque la boîte 42 est à l'état déployé. According to an embodiment visible in Figure 11, each of the first and third side walls 48, 52 (those which have first and second oblique fold lines 66, 66' forming an inverted V) is extended by a flap 102 folded against the internal face of the corresponding first or second side wall 48, 52. To be able to fold the first and second side walls 48, 52, each flap 102 comprises fold lines in the extension of the oblique fold lines 66, 66'. These flaps 102 make it possible to stiffen the first and second side walls 48, 52, which makes it possible to prevent said side walls 48, 52 from moving away from the cover 82 at the end of cooking, when the box 42 is in the deployed state.

La boîte 42 est obtenue à partir d'un flan 98 découpé à plat. La première paroi latérale 48 comprend un prolongement 100, à l'opposé de la deuxième paroi latérale 50, collé contre la quatrième paroi latérale 54 pour former un tube. Les tubes sont stockés à plat, les rabats 72, 72', 78.1, 78.2 du fond 46 ainsi que les volets 90, 92 du couvercle 82 étant situés dans le prolongement des parois latérales 48, 50, 52, 54, les première et deuxième parois latérales 48, 50 étant plaquées contre les troisième et quatrième parois latérales 52, 54. The box 42 is obtained from a blank 98 cut flat. The first side wall 48 comprises an extension 100, opposite the second side wall 50, glued against the fourth side wall 54 to form a tube. The tubes are stored flat, the flaps 72, 72', 78.1, 78.2 of the bottom 46 as well as the flaps 90, 92 of the cover 82 being located in the extension of the side walls 48, 50, 52, 54, the first and second side walls 48, 50 being pressed against the third and fourth side walls 52, 54.

Pour former la boîte 42, les parois latérales 48, 50, 52, 54 sont écartées de manière à former un tube. En suivant, au moins un des deux grands rabats 72, 72' étant encollé, les grands et petits rabats 72, 72', 78.1, 78.2 sont pliés et collés les uns avec les autres de manière à former le fond 46. La barquette 44 est posée sur le fond 46 et maintenue grâce à la colle 76, utilisée pour coller les grands et petits rabats 72, 72', 78.1, 78.2 entre eux, qui passe à travers les orifices traversants 72.1'. To form the box 42, the side walls 48, 50, 52, 54 are separated so as to form a tube. Next, at least one of the two large flaps 72, 72' being glued, the large and small flaps 72, 72', 78.1, 78.2 are folded and glued together so as to form the bottom 46. The tray 44 is placed on the bottom 46 and held by means of the glue 76, used to glue the large and small flaps 72, 72', 78.1, 78.2 together, which passes through the through holes 72.1'.

En suivant, le (ou les) volet(s) 90, 92 est (ou sont) plié(s) et collé(s) de manière à former le couvercle 82. Enfin, la boîte 42 est repliée selon les lignes de pliage inférieures 60, les première et deuxième lignes de pliage obliques 66, 66' et la ligne de pliage 86 du couvercle 82. Selon l'invention, la barquette 44 étant immobile par rapport au fond 46, la boîte 42 présente une section dans un plan parallèle au fond 46 supérieure à celle de la barquette 44, contrairement à l'art antérieur qui prévoit une boîte de section sensiblement identique à celle de la barquette. Par conséquent, la boîte présente à l'état déployé une hauteur inférieure à celle des boîtes de l'art antérieur, ce qui permet d'utiliser des appareils de cuisson de plus petites dimensions. Next, the flap(s) 90, 92 is (or are) folded and glued so as to form the cover 82. Finally, the box 42 is folded along the lower fold lines 60, the first and second oblique fold lines 66, 66' and the fold line 86 of the cover 82. According to the invention, the tray 44 being stationary relative to the bottom 46, the box 42 has a section in a plane parallel to the bottom 46 greater than that of the tray 44, unlike the prior art which provides a box with a section substantially identical to that of the tray. Consequently, the box has a height in the deployed state less than that of the boxes of the prior art, which makes it possible to use cooking appliances of smaller dimensions.

Selon un autre avantage, lorsque le (ou les) volet(s) 90, 92 est (ou sont) collé(s) et forme(nt) le couvercle 82, ce dernier présente deux extrémités opposées reliées au reste de la boîte 42, ce qui simplifie le repliage de la boîte 42. Contrairement à l'art antérieur, la boîte 42 ne présente aucun volet ou rabat avec des extrémités libres comme dans le cas de la boîte de l'art antérieur, visible sur les figures 1 et 2, qui rend difficile l'automatisation du repliage de la boîte. According to another advantage, when the flap(s) 90, 92 is (or are) glued and forms the cover 82, the latter has two opposite ends connected to the rest of the box 42, which simplifies the folding of the box 42. Unlike the prior art, the box 42 does not have any flap or flap with free ends as in the case of the box of the prior art, visible in Figures 1 and 2, which makes it difficult to automate the folding of the box.

Selon un autre avantage, les parois latérales 48, 50, 52 et 54 ne comprennent qu'un nombre limité de lignes de pliage 60, 66, 66'. Ainsi, les première et troisième parois latérales 48, 52 comprennent chacune une unique ligne de pliage 60 parallèle au fond 46 au lieu de deux selon l'art antérieur et des lignes de pliage en V au lieu de lignes de pliage en X (équivalent à deux V). En complément, les deuxième et quatrième parois latérales 50, 54 comprennent chacune une unique ligne de pliage 60 parallèle au fond 46 au lieu de deux selon l'art antérieur. Ce nombre limité de lignes de pliage permet de limiter les risques de déformations inadéquates de la boîte 42 lors du passage de l'état déployé à l'état replié, ce qui simplifie l'automatisation du pliage de la boîte 42 à l'état replié. According to another advantage, the side walls 48, 50, 52 and 54 only comprise a limited number of fold lines 60, 66, 66'. Thus, the first and third side walls 48, 52 each comprise a single fold line 60 parallel to the bottom 46 instead of two according to the prior art and V-shaped fold lines instead of X-shaped fold lines (equivalent to two Vs). In addition, the second and fourth side walls 50, 54 each comprise a single fold line 60 parallel to the bottom 46 instead of two according to the prior art. This limited number of fold lines makes it possible to limit the risks of inadequate deformations of the box 42 when changing from the deployed state to the folded state, which simplifies the automation of the folding of the box 42 to the folded state.

Enfin, grâce au blocage mécanique du couvercle 82, la boîte peut occuper un état déployé et verrouillé dans lequel elle est complètement fermée, et ce même en l'absence de rabat dans le prolongement des première et troisième parois latérales 48, 52. Finally, thanks to the mechanical locking of the cover 82, the box can occupy a deployed and locked state in which it is completely closed, even in the absence of a flap in the extension of the first and third side walls 48, 52.

Claims

REVENDICATIONS 1. Boîte de conditionnement et de cuisson de pop-corn comprenant un fond (46) ainsi que des première, deuxième, troisième et quatrième parois latérales (48, 50, 52, 54) reliées deux à deux, chacune des première, deuxième, troisième et quatrième parois latérales (48, 50, 52 et 54) s'étendant entre un bord inférieur (58) attenant au fond (46) et un bord supérieur (62) et comportant une ligne de pliage inférieure (60) sensiblement parallèle au fond (46), chacune des première et troisième parois latérales (48, 52) comportant des première et deuxième lignes de pliage obliques (66, 66') formant un V inversé, la boîte étant configurée pour occuper un état replié ainsi qu'un état déployé dans lequel les bords supérieurs (62) des première, deuxième, troisième et quatrième parois latérales (48, 50, 52, 54) délimitent une ouverture (70) ; caractérisée en ce que la boîte (42) comprend un couvercle (82), configuré pour fermer l'ouverture (70) lorsque la boîte (42) est à l'état déployé, qui présente des premier et deuxième côtés (84.1, 84.2) reliés respectivement aux bords supérieurs (62) des deuxième et quatrième parois latérales (50, 54) par des lignes de pliage, le couvercle (82) comportant au moins une ligne de pliage (86) qui permet de le plier lorsque la boîte (42) est à l'état replié. 1. A popcorn packaging and cooking box comprising a bottom (46) and first, second, third and fourth side walls (48, 50, 52, 54) connected in pairs, each of the first, second, third and fourth side walls (48, 50, 52 and 54) extending between a lower edge (58) adjoining the bottom (46) and an upper edge (62) and comprising a lower fold line (60) substantially parallel to the bottom (46), each of the first and third side walls (48, 52) comprising first and second oblique fold lines (66, 66') forming an inverted V, the box being configured to occupy a folded state as well as an extended state in which the upper edges (62) of the first, second, third and fourth side walls (48, 50, 52, 54) define an opening (70); characterized in that the box (42) comprises a lid (82), configured to close the opening (70) when the box (42) is in the deployed state, which has first and second sides (84.1, 84.2) connected respectively to the upper edges (62) of the second and fourth side walls (50, 54) by fold lines, the lid (82) comprising at least one fold line (86) which allows it to be folded when the box (42) is in the folded state. 2. Boîte selon la revendication 1, caractérisée en ce que le couvercle (82) présente une dimension (Ll), distance séparant les premier et deuxième côtés (84.1, 84.2), supérieure à la longueur (L0) de chaque bord supérieur (62) des première et troisième parois latérales (48, 52), la boîte (42) étant configurée pour occuper un état déployé et déverrouillé dans lequel la ligne de pliage (86) est située au-dessus d'un plan passant par les bords supérieurs (62) ainsi qu'un état déployé et verrouillé dans lequel la ligne de pliage (86) est située au-dessous du plan passant par les bords supérieurs (62). 2. Box according to claim 1, characterized in that the cover (82) has a dimension (L1), distance separating the first and second sides (84.1, 84.2), greater than the length (L0) of each upper edge (62) of the first and third side walls (48, 52), the box (42) being configured to occupy a deployed and unlocked state in which the folding line (86) is located above a plane passing through the upper edges (62) as well as a deployed and locked state in which the folding line (86) is located below the plane passing through the upper edges (62). 3. Boîte selon la revendication selon la revendication précédente, caractérisée en ce que le couvercle (82) comprend une unique ligne de pliage (86) située sensiblement à équidistance des premier et deuxième côtés (84.1, 84.2). 3. Box according to the claim according to the preceding claim, characterized in that the cover (82) comprises a single fold line (86) located substantially equidistant from the first and second sides (84.1, 84.2). 4. Boîte selon l'une des revendications précédentes, caractérisée en ce que le couvercle (82) comprend des premier et deuxième volets (90, 92) reliés entre eux et respectivement reliés aux deuxième et quatrième parois latérales (50, 54) par des lignes de pliage situées au niveau des bords supérieurs (62) des deuxième et quatrième parois latérales (50, 54). 4. Box according to one of the preceding claims, characterized in that the cover (82) comprises first and second flaps (90, 92) connected to each other and respectively connected to the second and fourth side walls (50, 54) by fold lines located at the upper edges (62) of the second and fourth side walls (50, 54). 5. Boîte selon l'une des revendications l à 3, caractérisée en ce que le couvercle (82) comprend un unique volet (90) relié par une ligne de pliage à la deuxième paroi latérale (50) et par collage à la quatrième paroi latérale (54). 5. Box according to one of claims 1 to 3, characterized in that the cover (82) comprises a single flap (90) connected by a fold line to the second side wall (50) and by gluing to the fourth side wall (54). 6. Boîte selon l'une des revendications précédentes, caractérisée en ce que le couvercle (82) comprend au moins une ligne de prédécoupe (94) permettant de séparer le couvercle (82) en deux parties ou de le séparer d'au moins une des deuxième et quatrième parois latérales (50, 54) afin de dégager au moins partiellement l'ouverture (70). 6. Box according to one of the preceding claims, characterized in that the cover (82) comprises at least one pre-cut line (94) making it possible to separate the cover (82) into two parts or to separate it from at least one of the second and fourth side walls (50, 54) in order to at least partially clear the opening (70). 7. Boîte selon l'une des revendications précédentes, caractérisée en ce que la boîte (42) comprend au moins deux poignées (96, 96') reliées à deux parois latérales (48, 50, 52, 54) opposées. 7. Box according to one of the preceding claims, characterized in that the box (42) comprises at least two handles (96, 96') connected to two opposite side walls (48, 50, 52, 54). 8. Boîte selon la revendication précédente, caractérisée en ce que les poignées (96, 96') sont positionnées au niveau des bords supérieurs (62) des deuxième et quatrième parois latérales (50, 54). 8. Box according to the preceding claim, characterized in that the handles (96, 96') are positioned at the upper edges (62) of the second and fourth side walls (50, 54). 9. Boîte selon la revendication 7, caractérisée en ce que les poignées (96, 96') sont positionnées au niveau des bords supérieurs (62) des première et troisième parois latérales (48, 52). 9. Box according to claim 7, characterized in that the handles (96, 96') are positioned at the upper edges (62) of the first and third side walls (48, 52). 10. Boîte selon l'une des revendications précédentes, caractérisée en ce que le fond (46) comprend des premier et deuxième grands rabats (72, 72') reliés respectivement à deux parois latérales (48, 50, 52, 54) opposées par des lignes de pliage situées au niveau des bords inférieurs (58) ainsi qu'une liaison par collage (74) reliant les premier et deuxième grands rabats (72, 72'), le deuxième grand rabat (72') étant positionné entre le premier grand rabat (72) et l'intérieur de la boîte (42), le premier grand rabat (72) étant dimensionné pour s'étendre sur tout le fond (46). 10. Box according to one of the preceding claims, characterized in that the bottom (46) comprises first and second large flaps (72, 72') connected respectively to two side walls (48, 50, 52, 54) opposite each other by fold lines located at the lower edges (58) as well as a glue connection (74) connecting the first and second large flaps (72, 72'), the second large flap (72') being positioned between the first large flap (72) and the interior of the box (42), the first large flap (72) being sized to extend over the entire bottom (46). 11. Boîte selon la revendication précédente, caractérisée en ce que le deuxième grand rabat (72') comprend au moins un orifice traversant (72.1'). 11. Box according to the preceding claim, characterized in that the second large flap (72') comprises at least one through-hole (72.1'). 12. Boîte selon la revendication précédente, caractérisée en ce que le fond (46) comprend des premier et deuxième petits rabats (78.1, 78.2) reliés à deux parois latérales opposées différentes de celles auxquelles sont reliés les premier et deuxième grands rabats (72, 72'), les premier et deuxième petits rabats (78.1, 78.2) comportant chacun au moins une découpe (80) pour dégager chaque orifice traversant (72.1') du deuxième grand rabat (72'). 12. Box according to the preceding claim, characterized in that the bottom (46) comprises first and second small flaps (78.1, 78.2) connected to two opposite side walls different from those to which the first and second large flaps (72, 72') are connected, the first and second small flaps (78.1, 78.2) each comprising at least one cutout (80) to clear each through-orifice (72.1') of the second large flap (72'). 13. Dispositif de conditionnement et de cuisson de pop-corn comportant une boîte selon l'une des caractéristiques précédentes ainsi qu'une barquette (44) contenant des grains de maïs et positionnée dans la boîte. 13. Device for packaging and cooking popcorn comprising a box according to one of the preceding characteristics as well as a tray (44) containing corn kernels and positioned in the box.
PCT/EP2024/051496 2024-01-23 2024-01-23 Box for packaging and cooking popcorn Pending WO2025157392A1 (en)

Priority Applications (2)

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PCT/EP2024/051496 WO2025157392A1 (en) 2024-01-23 2024-01-23 Box for packaging and cooking popcorn
PCT/EP2024/063104 WO2025157426A1 (en) 2024-01-23 2024-05-13 Box for packaging and cooking a food product to be cooked by popping or puffing

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PCT/EP2024/051496 WO2025157392A1 (en) 2024-01-23 2024-01-23 Box for packaging and cooking popcorn

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PCT/EP2024/063104 Pending WO2025157426A1 (en) 2024-01-23 2024-05-13 Box for packaging and cooking a food product to be cooked by popping or puffing

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Citations (7)

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US3809310A (en) * 1971-03-01 1974-05-07 Brown Co Hexagonal container for food products or the like
US3827623A (en) * 1972-04-10 1974-08-06 Federal Paper Board Co Inc Collapsible container
WO2004032633A2 (en) 2002-10-09 2004-04-22 Berthault Francois Package for preparing popcorn in a microwave oven
US20050048170A1 (en) 2003-08-29 2005-03-03 Huhn Rick S. Microwavable container for food products
FR2918969A1 (en) * 2007-07-20 2009-01-23 Francois Berthault Corn grain packaging and cooking device for preparing pop corn in microwave oven, has slot provided at level of wall of compensation zone, where device is in complex material that does not includes packaged layer perpendicular to slot
WO2014064342A1 (en) 2012-10-26 2014-05-01 François Berthault Device for packaging and cooking popcorn and automated method for closing such a device
US20180208386A1 (en) * 2012-10-26 2018-07-26 Francois Berthault Device for packaging and cooking popcorn and automated method for closing such a device

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FR1578148A (en) * 1968-06-21 1969-08-14
WO2010049601A1 (en) * 2008-10-30 2010-05-06 Berthault Francois Device for packaging at least two food products
US20140048546A1 (en) * 2012-08-16 2014-02-20 Bigbagbox International, Inc. Collapsible Container
DK178719B1 (en) * 2015-05-10 2016-12-05 Bo Bach Boddum Corrugated box with a unique collapsible format, which enables convenient return shipment by fitting it to the slot of a standard mailbox
US10392156B2 (en) * 2017-04-10 2019-08-27 John McDonald Return shipping system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809310A (en) * 1971-03-01 1974-05-07 Brown Co Hexagonal container for food products or the like
US3827623A (en) * 1972-04-10 1974-08-06 Federal Paper Board Co Inc Collapsible container
WO2004032633A2 (en) 2002-10-09 2004-04-22 Berthault Francois Package for preparing popcorn in a microwave oven
US20050048170A1 (en) 2003-08-29 2005-03-03 Huhn Rick S. Microwavable container for food products
FR2918969A1 (en) * 2007-07-20 2009-01-23 Francois Berthault Corn grain packaging and cooking device for preparing pop corn in microwave oven, has slot provided at level of wall of compensation zone, where device is in complex material that does not includes packaged layer perpendicular to slot
WO2014064342A1 (en) 2012-10-26 2014-05-01 François Berthault Device for packaging and cooking popcorn and automated method for closing such a device
US20180208386A1 (en) * 2012-10-26 2018-07-26 Francois Berthault Device for packaging and cooking popcorn and automated method for closing such a device

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