EP2905240A1 - Tray with resealable lid - Google Patents

Tray with resealable lid Download PDF

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Publication number
EP2905240A1
EP2905240A1 EP15154479.8A EP15154479A EP2905240A1 EP 2905240 A1 EP2905240 A1 EP 2905240A1 EP 15154479 A EP15154479 A EP 15154479A EP 2905240 A1 EP2905240 A1 EP 2905240A1
Authority
EP
European Patent Office
Prior art keywords
tray
shutter
sealing
cardboard
plastic film
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.)
Granted
Application number
EP15154479.8A
Other languages
German (de)
French (fr)
Other versions
EP2905240B1 (en
EP2905240B8 (en
Inventor
Thibaut Delarue
Jean-Luc Rival
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.)
CGL Pack Service SAS
Original Assignee
CGL Pack Service SAS
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 CGL Pack Service SAS filed Critical CGL Pack Service SAS
Publication of EP2905240A1 publication Critical patent/EP2905240A1/en
Publication of EP2905240B1 publication Critical patent/EP2905240B1/en
Application granted granted Critical
Publication of EP2905240B8 publication Critical patent/EP2905240B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D77/00Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10Container closures formed after filling
    • B65D77/20Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2068Means for reclosing the cover after its first opening
    • B65D77/2072Mechanical means
    • B65D77/2076Mechanical means provided by the cover itself
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D43/00Lids or covers for rigid or semi-rigid containers
    • B65D43/02Removable lids or covers
    • B65D43/0202Removable lids or covers without integral tamper element
    • B65D43/0204Removable lids or covers without integral tamper element secured by snapping over beads or projections
    • B65D43/021Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the inside, or a part turned to the inside, of the mouth
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D77/00Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10Container closures formed after filling
    • B65D77/20Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2004Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being maintained on the container by mechanical means, e.g. crimping, clamping, riveting
    • B65D77/2016Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being maintained on the container by mechanical means, e.g. crimping, clamping, riveting the cover being maintained by projections or recesses on the container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00064Shape of the outer periphery
    • B65D2543/00074Shape of the outer periphery curved
    • B65D2543/00092Shape of the outer periphery curved circular
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00064Shape of the outer periphery
    • B65D2543/0012Shape of the outer periphery having straight sides, e.g. with curved corners
    • B65D2543/00175Shape of the outer periphery having straight sides, e.g. with curved corners four straight sides, e.g. trapezium or diamond
    • B65D2543/00194Shape of the outer periphery having straight sides, e.g. with curved corners four straight sides, e.g. trapezium or diamond square or rectangular
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00231Overall construction of the lid made of several pieces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00259Materials used
    • B65D2543/00268Paper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00259Materials used
    • B65D2543/00296Plastic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00259Materials used
    • B65D2543/00314Combination, e.g. laminates, several different materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00481Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00481Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • B65D2543/00546NO contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00574Contact between the container and the lid secured locally, i.e. a lot less than half the periphery
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00583Means for limiting the axial insertion of the lid on the container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00601Snapping means on the container
    • B65D2543/00611Profiles
    • B65D2543/00629Massive bead
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00601Snapping means on the container
    • B65D2543/00675Periphery concerned
    • B65D2543/00694Segments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00712Snapping means on the lid
    • B65D2543/00722Profiles
    • B65D2543/00759Flange or lip
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00712Snapping means on the lid
    • B65D2543/00787Periphery concerned
    • B65D2543/00796Totality
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00824Means for facilitating removing of the closure
    • B65D2543/00833Integral tabs, tongues, handles or similar
    • B65D2543/00842Integral tabs, tongues, handles or similar outside of the lid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2577/00Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10Container closures formed after filling
    • B65D2577/20Container closures formed after filling by applying separate lids or covers
    • B65D2577/2041Pull tabs
    • B65D2577/205Pull tabs integral with the closure

Definitions

  • the present invention relates to trays for containing food, and more particularly trays which are closed by a seal sealed on a sidewalk lidding peripheral.
  • a cap to close the trays is particularly advantageous because it allows to limit the cost of manufacturing trays and significantly reduce the environmental impact trays. Lidding makes it possible to increase the shelf life of the food contained in the tray compared to an unclogged tray.
  • the repositionable lids were then developed to provide a container without lid with a lid that can close the tray again after a first opening. Thus, if all the food contained in the tray have not been consumed, they can still be kept in the tray that the user has closed by correctly repositioning the lid.
  • the document CH 665 401 discloses a sealable and resealable tray, wherein an annular support shoulder protrudes from the inner side peripheral wall face.
  • a thin membrane may be heat sealed to a peripheral edge to form a seal closing the opening of the tray.
  • a stiffening plate in the form of a circular disc is fixed on the outer face of the membrane. After detachment of the membrane vis-à-vis the peripheral edge of the tray, the membrane-stiffening plate assembly constitutes a lid that can be engaged in the tray to come wear against the annular support shoulder. It is also provided on the inner side peripheral wall side an element opposing the extraction of the lid.
  • the document does not describe the constitution of the tray, and the closure means described do not allow sealing by a cardboard cover. Thus, the document does not make it possible to produce a tray that ensures both a low environmental impact and a good seal after closure of the lid.
  • a first problem proposed by the present invention is to design a tray for containing food, which is sealable and inexpensive, which can be closed after opening the lid, whose environmental impact is limited, which can be stacked not only after sealing but also after opening and closing, and which ensures a good seal after reclosing.
  • Such a tray is sealable, which limits the cost of manufacturing trays and reduces the environmental impact.
  • annular support shoulder and the retaining means adapted to retain a cardboard-based shutter resting on the annular bearing shoulder constitute specific mechanical means designed to cooperate with a shutter based on carton to close the tray previously opened and hold the shutter in a sealed closed position in which food contained in the tray can be stored for an additional period.
  • the tray is designed to receive closure means in two distinct positions, namely a first position "initial position” in which a lid is contained in the tray sealing plane, and a second position, namely "closed position” In which a shutter is contained in the closure plane.
  • the tray also allows the same element, namely a sealing shutter, gives the tray the benefits of a trays tray but also those of a tray with a lid.
  • the tray Before use, the tray has a starting volume defined by the bottom of the tray, the lateral peripheral wall and the lidding plan. The tray then contains a volume of feed.
  • the volume of food is a residual volume less than the volume of feed.
  • the fact that the closing plane is deported away from the sealing plane towards the bottom of the tray allows to define a volume of the closed container which is less than the starting volume of the tray.
  • the sealing plane and the closure plane are provided substantially parallel to the plane containing the bottom of the tray. It is thus easy to put another food container on the closed container.
  • the tray is made by thermoforming a thermoformable plastic sheet about 0.4 mm thick.
  • Thermoforming is a widespread, simple and inexpensive packaging manufacturing technique, and the outer shape of the side wall of such a tray then reproduces the inner shape of this wall, and in particular the presence of the annular shoulder support to limit the engagement of the trays into each other when stacked before filling.
  • the tray is made of polyester, polypropylene, polyvinyl chloride, amorphous polyethylene terephthalate, or polylactic acid.
  • These food compatible materials make the tray usable for holding food.
  • these materials are transparent and allow the consumer to check the condition of the food he is about to buy.
  • the annular support shoulder must have a sufficient contact area for the shutter.
  • good results can be obtained by providing that the annular bearing shoulder has a useful width of at least 4 mm, the effective width being the width of the contact area with the shutter.
  • the inner face of the lateral peripheral wall may have an oblique section going narrowing towards the peripheral lidding sidewalk, to force the cardboard-based shutter resting on the annular support shoulder.
  • the oblique section can be connected directly to the annular support shoulder.
  • the inner face of the lateral peripheral wall may have a first cylindrical section of height less than the thickness of the cardboard-based shutter.
  • the oblique section has an angle of inclination of about 25 °, and preferably a height H1 oblique section of about 3 to 3.5 mm.
  • the inner face of the lateral peripheral wall has an upper section. larger diameter connecting to the oblique section by an engagement shoulder.
  • Such a tray has both the advantages of a sealed tray and those of a closable container tightly sealed by a cardboard-based shutter.
  • such a tray is closed by a single element, the shutter, which can take two closed positions: a first closed position in which the plastic film acts as a seal, and a second closed position in which the stiffened plastic film acts as a shutter.
  • stiffening means made of cardboard are superimposed on the outer face of the plastic film.
  • the stiffening means may advantageously be glued to the plastic film.
  • the plastic film to protrude beyond the stiffening periphery to be sealed on the peripheral lidding sidewalk.
  • the shutter comprises at least one gripping tab.
  • the gripping tab is a gripping means facilitating the pulling of the shutter for opening.
  • Cardboard is an advantageous material for achieving a lightweight shutter with low environmental impact.
  • the carton causes difficulties in achieving sealing in wet and cold atmosphere, and should choose the quality of the board and its thickness to ensure sufficient rigidity in the conditions of the intended use of the tray.
  • the stiffening means are kraft paperboard whose thickness is chosen to have sufficient rigidity for sealing the tray when the shutter is in the closed position.
  • a thickness of cardboard which is a function of the surface of the main opening of the tray.
  • the stiffening means may be secured to the plastic film according to the stiffening perimeter.
  • the plastic film in the closed position, has a dual function: on the one hand, it insulates the cardboard stiffening means vis-à-vis the food contained in the tray, so that it is then no need to use a laminated cardboard if the food is wet or liquid; on the other hand, it provides a seal between the stiffening perimeter and the inner face of the lateral peripheral wall.
  • the shelf life of food is increased compared to trays with a repositionable shutter known to date.
  • the stiffening means may be in the form of a plate with two opposite protrusions connecting to the central part of the plate by precut lines, the stiffening means being secured to the plastic film according to the only ones protruding, the central plate portion being thus detachable from the plastic film and having a shape suitable for constituting the shutter.
  • This method is easy to implement, it only requires the addition of a bonding machine at the end of the production line compared to a conventional production line.
  • the Figures 1 to 7 illustrate first and second embodiments of a tray according to the invention.
  • the tray is of rectangular shape.
  • the Figures 1 to 5 illustrate a first tray with a non-perforated shutter.
  • the figures 6 and 7 illustrate a second tray with a perforated shutter having a light 14.
  • the Figures 8 to 14 illustrate third and fourth embodiments of a tray according to the invention.
  • the tray is of substantially circular contour.
  • the Figures 8 to 12 illustrate a third tray with a shutter comprising a gripping tab.
  • the figures 13 and 14 illustrate a fourth tray with a shutter comprising two gripping tabs.
  • FIGS. 15 to 17 illustrate a fifth embodiment of a tray according to the invention, wherein the retaining means are continuous along the entire periphery of the tray.
  • the figure 1 illustrates a tray 1 without shutter.
  • the tray 1 is substantially rectangular and has four corners C1, C2, C3 and C4.
  • It comprises a cavity 2 limited by a lateral peripheral wall 3 and a bottom 4, and open in a main opening opposite the bottom 4.
  • the tray 1 comprises a peripheral sidewalk 5 lidding, bordering the main opening, shaped according to a sealing plane PO.
  • the tray 1 further comprises, on the inner face of the lateral peripheral wall 3, abutment means in the form of a shoulder 6, and retaining means in the form of ribs such as the ribs 7c-7f, of length L .
  • the shoulder 6 is contained in a closure plane PF substantially parallel to the sealing plane PO and offset away from the sealing plane PO towards the bottom 4 of the tray.
  • the shoulder 6 is shaped to receive a shutter 9 ( Figures 2 to 5 ) in the closed position and oppose its movement in the direction of the bottom 4.
  • the shoulder 6 is continuous in the illustrated embodiments, to ensure a closing seal of the tray during the adaptation of a shutter 9.
  • the ribs 7c-7f are shaped to oppose the displacement of a shutter 9 ( Figures 2 to 5 ) towards the outside away from the closed position, and to press the shutter 9 on the shoulder 6.
  • the shoulder 6 and the ribs 7c-7f constitute latching means shaped to receive and hold a shutter 9 (FIG. Figures 2 to 5 ) in a closed position closing the main opening and in which the shutter 9 ( Figures 2 to 5 ) is contained in a closing plane PF separate from the sealing plane PO.
  • the closing plane PF is provided at a short distance under the sealing plane PO.
  • the shoulder 6 is provided at about 6 mm under the sealing plane PO, and the ribs 7c-7f are provided 1 mm above the shoulder 6.
  • the ribs 7c-7f may be in the form of a prism having the following dimensions: 15 mm in length, 3 mm in height and 1 mm in depth, comprising a lower face of oblique support to force the shutter 9 to bear on the shoulder 6.
  • the underside of oblique support can make an angle of inclination of about 25 ° relative to the lateral peripheral wall 3 of the tray.
  • the ribs 7c-7f may advantageously be provided at a distance of about 10 mm from each corner.
  • the figure 2 illustrates the tray 1 before sealing the shutter 9.
  • the shutter 9 comprises a plastic film 10 and a stiffening plate 11 made of cardboard.
  • the plastic film 10 protrudes beyond the cardboard stiffening plate 11 to allow its sealing on the lidding peripheral sidewalk 5.
  • ribs 7a and 7b provided on the front portion of the side wall 3.
  • ribs 7g and 7h are provided on the right side of the side face 3.
  • the plastic film 10 protrudes beyond the stiffening plate 11 and provides a seal between the stiffening plate 11 and the inner face of the lateral peripheral wall 3. Simultaneously, the plastic film 10 isolates the cardboard stiffening plate 11 vis-à-vis the possibly wet content of the tray 1.
  • the plastic film 10 comprises a gripping tab 12, and the stiffening plate 11 comprises a gripping tab 13.
  • the gripping tab 12 is provided in the corner C1, and the gripping tab 13 is provided in the corner C3.
  • the gripping tabs 12 and 13 are diametrically opposed.
  • the plastic film 10 is positioned above the tray 1 so that its outer periphery is in correspondence of the peripheral sidewalk 5.
  • the plastic film 10 is then lowered until the periphery of the plastic film 10 is in contact with the peripheral sidewalk 5.
  • the sealing can then be performed.
  • the tray 1 of the figure 4 is then obtained.
  • the stiffening plate 11 previously printed on one or both sides if necessary, is then glued on the outer face of the plastic film 10 to make the shutter 9.
  • the consumer can disengage the shutter 9 of the tray 1 by pulling on the gripping tab 12. The tray 1 is then open, the consumer can access the food contained in the tray 1.
  • the consumer engages the shutter 9 in the cavity 2 until it bears on the shoulder 6 and is retained by the ribs 7a-7h.
  • the tray 1 of the figure 5 is thus obtained.
  • the consumer can use either of the gripping tabs 12 and 13. The consumer can if he wishes to close the tray 1 again.
  • the stiffening plate 11 is not perforated.
  • the communication surface is therefore maximum.
  • the figures 6 and 7 illustrate an embodiment in which the stiffening plate 11 of the shutter 9 has an opening 14.
  • the shutter 9 is thus perforated so as to leave visible part of the food contained in the tray 1, so as to attract the consumer .
  • FIGS 8 to 12 illustrate an embodiment in which the tray 1 has a substantially circular contour, and the shutter 9 comprises a single gripping tab 12.
  • the figure 8 illustrates a tray 1 with a circular contour and no shutter 9 ( Figures 9 to 12 ).
  • the shoulder 6 is continuous.
  • ribs 7g, 7h, 7a, 7b and 7e are visible.
  • ribs 7d, 7e and 7f are provided on the concealed front part of the side wall 3.
  • the ribs 7a-7h are illustrated so that the ribs 7b, 7d, 7f, 7b have a length L1 and the ribs 7a, 7c, 7e, 7g have a length L2, with L1 equal to about twice L2.
  • the ribs 7b, 7d, 7f and 7h have a length L1 of about 40 mm, and the ribs 7a, 7c, 7e and 7g present a length L2 of about 20 mm.
  • the filling and use include the same steps for all the illustrated embodiments.
  • the figures 13 and 14 illustrate a fourth embodiment.
  • the only difference with respect to the third embodiment lies in the two tongues 12 and 13, diametrically opposed.
  • the retaining means are in the form of a continuous annular rib 7 whose shape is better visible in the sectional view of the figure 17 .
  • the annular support shoulder 6 has a useful width L3 that is chosen to be at least 4 mm.
  • the inner face of the lateral peripheral wall 3 has an oblique section 70 going closer to the center of the tray 1 towards the peripheral sidewalk 5 d lidding.
  • the oblique section 70 has an angle of inclination A whose value may advantageously be about 25 °. Its height H1 may advantageously be about 3 to 3.5 mm.
  • the annular support shoulder 6 is connected to the oblique section 70 by a first cylindrical section 71 of low height, its height to be less than the thickness of the shutter 9 intended to be engaged on the annular support shoulder 6 to close the tray 1.
  • the inner face of the lateral peripheral wall 3 has a larger diameter upper section 72 connecting to the oblique section 70 by an engagement shoulder 73.
  • the height H between the annular support shoulder 6 and the peripheral sidewalk 5 lidding is about 6 mm.
  • the width of the sidewalk lidding 5 is about 5 mm, to ensure good sealing of the lid.
  • the container body 1 illustrated on the Figures 15 to 17 has a rectangular or square contour with rounded corners.
  • the same structure of retaining means with continuous annular rib 7 could equally well be adapted to a container body having another shape of contour, for example a circular contour as illustrated on FIG. figure 8 .
  • the figure 18 illustrates a stiffening plate 11 with a square contour intended to fit in the tray body 1 illustrated on the Figures 15 and 16 to form the shutter 9 when associated with a plastic film forming a lid.
  • the stiffening plate 11 also comprises a light 14 for gripping.
  • the stiffening plate 11 is secured to the plastic film according to the stiffening perimeter 110. Note that the plastic film closes the light 14 to ensure the sealing of the shutter 9.
  • the figure 19 illustrates another embodiment of the stiffening plate 11 with a square contour intended to fit into the tray body 1 illustrated on the FIG. Figures 15 and 16 to form the shutter 9.
  • the stiffening plate 11 is also associated with a plastic film forming a lid.
  • the stiffening plate 11 then comprises two protuberances 111 and 112 opposite one another and connecting to the rectangular central portion of the plate 11 by respective precut lines 113 and 114.
  • the stiffening plate It is secured to the plastic film according to the only opposite protuberances 111 and 112. It also comprises a protrusion forming a gripping tongue 13, on a side devoid of the protrusions 111 and 112, and connected to the rectangular central portion of the plate 11 by a line folding 115.
  • the rectangular central portion of the plate 11 is detachable from the plastic film by cutting along the precut lines 113 and 114, to form by itself the shutter intended to engage in the tray 1 according to the Figures 15 and 16 .
  • the board forming the stiffening plate 11 should be chosen neither too rigid (400 g / m 2 ) nor too soft (200 g / m 2 ). It can generally be about 300 g / m 2 .
  • the plate has a rigidity just sufficient to seal tightly of the tray 1 when the shutter 9 is in the closed position.
  • the rigidity required depends on the size of the main opening of the tray 1. We understand that, when the main opening is small, sealing can be ensured with a stiffening plate 11 whose cardboard is relatively flexible. On the other hand, when the main opening is large, a sealed closure requires a stiffening plate 11 whose cardboard is much more rigid.

Abstract

La barquette (1) selon l'invention comprend au moins une cavité (2) limitée par une paroi périphérique latérale (3) et un fond (4) et ouverte selon une ouverture principale opposée au fond (4), et un trottoir périphérique (5) d'operculage, bordant l'ouverture principale, conformé selon un plan d'operculage (PO), et apte à recevoir un opercule pour obturer l'ouverture principale. Elle comprend en outre des moyens d'encliquetage (6, 7c-7f) conformés pour recevoir et maintenir un obturateur dans une position refermée obturant l'ouverture principale et dans laquelle l'obturateur est contenu dans un plan de fermeture (PF) distinct du plan d'operculage (PO).The tray (1) according to the invention comprises at least one cavity (2) limited by a lateral peripheral wall (3) and a bottom (4) and open in a main opening opposite the bottom (4), and a peripheral sidewalk ( 5) lidding, bordering the main opening, shaped according to a sealing plane (PO), and adapted to receive a lid to close the main opening. It further comprises latching means (6, 7c-7f) shaped to receive and hold a shutter in a closed position closing the main opening and in which the shutter is contained in a closure plane (PF) separate from the sealing plan (PO).

Description

La présente invention concerne les barquettes pour contenir des aliments, et plus particulièrement les barquettes qui sont fermées par un opercule scellé sur un trottoir périphérique d'operculage.The present invention relates to trays for containing food, and more particularly trays which are closed by a seal sealed on a sidewalk lidding peripheral.

L'utilisation d'un opercule pour fermer les barquettes est particulièrement avantageuse car cela permet de limiter le coût de fabrication des barquettes et de réduire considérablement l'impact environnemental des barquettes. L'operculage permet d'augmenter la durée de conservation des aliments contenus dans la barquette par rapport à une barquette non operculée.The use of a cap to close the trays is particularly advantageous because it allows to limit the cost of manufacturing trays and significantly reduce the environmental impact trays. Lidding makes it possible to increase the shelf life of the food contained in the tray compared to an unclogged tray.

Afin de consommer les aliments contenus dans la barquette operculée, un utilisateur doit préalablement ôter l'opercule. Cependant, l'inconvénient de telles barquettes est qu'une fois l'opercule ôté, la barquette ne peut pas être refermée. Il en résulte que les aliments n'ayant pas été consommés ne peuvent plus être conservés efficacement dans la barquette non refermée.In order to consume the food contained in the sealed tray, a user must first remove the lid. However, the disadvantage of such trays is that once the cap is removed, the tray can not be closed. As a result, foods that have not been consumed can no longer be effectively stored in the unclosed tray.

On a alors développé des barquettes fermées à la fois par un opercule et par un couvercle superposé. Ainsi, une fois l'opercule ouvert, la barquette peut être fermée de nouveau grâce au couvercle, qui coiffe la barquette et se fixe au trottoir périphérique d'operculage. Les aliments restant dans la barquette peuvent donc être conservés plus longtemps. Cependant, l'impact environnemental de telles barquettes est trop important et le coût de fabrication est supérieur.We then developed trays closed both by a cover and a cover overlay. Thus, once the lid is open, the tray can be closed again thanks to the lid, which caps the tray and attaches to the sidewalk lidding. The food remaining in the tray can be stored longer. However, the environmental impact of such trays is too important and the manufacturing cost is higher.

On a alors développé les opercules repositionnables, afin de proposer une barquette sans couvercle avec un opercule pouvant fermer de nouveau la barquette après une première ouverture. Ainsi, si tous les aliments contenus dans la barquette n'ont pas été consommés, ils peuvent encore être conservés dans la barquette que l'utilisateur aura refermée en repositionnant correctement l'opercule.The repositionable lids were then developed to provide a container without lid with a lid that can close the tray again after a first opening. Thus, if all the food contained in the tray have not been consumed, they can still be kept in the tray that the user has closed by correctly repositioning the lid.

L'inconvénient de telles barquettes est que, pendant leur stockage dans le réfrigérateur, l'utilisateur ne peut rien poser dessus, car l'opercule repositionnable n'est pas adapté pour soutenir une charge mécanique, l'adhésion de l'opercule repositionné étant insuffisante. Ainsi, il en résulte une grande place perdue.The disadvantage of such trays is that, during storage in the refrigerator, the user can not put anything on it, because the repositionable lid is not adapted to support a mechanical load, the adhesion of the repositioned lid being insufficient. Thus, it results in a large lost place.

Le document CH 665 401 décrit une barquette operculable et refermable, dans laquelle un épaulement annulaire d'appui dépasse de la face intérieure de paroi périphérique latérale. Une membrane fine peut être thermosoudée sur un bord périphérique pour former un opercule obturant l'ouverture de la barquette. Une plaque de rigidification en forme de disque circulaire est fixée sur la face externe de la membrane. Après détachement de la membrane vis-à-vis du bord périphérique de la barquette, l'ensemble membrane-plaque de rigidification constitue un couvercle que l'on peut engager dans la barquette pour venir porter contre l'épaulement annulaire d'appui. Il est également prévu sur la face intérieure de paroi périphérique latérale un élément s'opposant à l'extraction du couvercle.The document CH 665 401 discloses a sealable and resealable tray, wherein an annular support shoulder protrudes from the inner side peripheral wall face. A thin membrane may be heat sealed to a peripheral edge to form a seal closing the opening of the tray. A stiffening plate in the form of a circular disc is fixed on the outer face of the membrane. After detachment of the membrane vis-à-vis the peripheral edge of the tray, the membrane-stiffening plate assembly constitutes a lid that can be engaged in the tray to come wear against the annular support shoulder. It is also provided on the inner side peripheral wall side an element opposing the extraction of the lid.

Le document ne décrit pas la constitution de la barquette, et les moyens de fermeture décrits ne permettent pas une fermeture étanche par un couvercle en carton. Ainsi, le document ne permet pas de réaliser une barquette assurant à la fois un faible impact environnemental et une bonne étanchéité de fermeture après enlèvement de l'opercule.The document does not describe the constitution of the tray, and the closure means described do not allow sealing by a cardboard cover. Thus, the document does not make it possible to produce a tray that ensures both a low environmental impact and a good seal after closure of the lid.

Un premier problème proposé par la présente invention est de concevoir une barquette pour contenir des aliments, qui soit operculable et peu onéreuse, qui puisse être refermée après ouverture de l'opercule, dont l'impact environnemental soit limité, qui puisse être empilée non seulement après operculage mais également après ouverture et refermeture, et qui assure une bonne étanchéité après refermeture.A first problem proposed by the present invention is to design a tray for containing food, which is sealable and inexpensive, which can be closed after opening the lid, whose environmental impact is limited, which can be stacked not only after sealing but also after opening and closing, and which ensures a good seal after reclosing.

Pour atteindre ces buts ainsi que d'autres, l'invention propose, selon un premier aspect, une barquette pour contenir des aliments comprenant :

  • au moins une cavité limitée par une paroi périphérique latérale et un fond et ouverte selon une ouverture principale opposée au fond,
  • un trottoir périphérique d'operculage, bordant l'ouverture principale, conformé selon un plan d'operculage, et apte à recevoir un opercule pour obturer l'ouverture principale,
  • un épaulement annulaire d'appui, dépassant de la face intérieure de la paroi périphérique latérale et disposé selon un plan de fermeture distinct du plan d'operculage, sensiblement parallèle au plan d'operculage et déporté à l'écart du plan d'operculage en direction du fond de la barquette, et conformé pour recevoir un obturateur à base de carton en position refermée et pour s'opposer à son déplacement en direction du fond,
  • des moyens de retenue conformés pour s'opposer au déplacement de l'obturateur en direction de l'extérieur à l'écart de la position refermée ;
    selon l'invention :
  • la barquette est réalisée par thermoformage d'une feuille de matière plastique thermoformable, ou par moulage par injection,
  • les moyens de retenue sont conformés pour retenir l'obturateur à base de carton en appui sur l'épaulement annulaire d'appui et pour assurer ainsi une étanchéité de fermeture.
To achieve these and other goals, the invention provides, in a first aspect, a tray for containing foods comprising:
  • at least one cavity limited by a lateral peripheral wall and a bottom and open in a main opening opposite the bottom,
  • a sidewalk lidding peripheral, bordering the main opening, shaped according to a sealing plane, and adapted to receive a lid to close the main opening,
  • an annular shoulder support, protruding from the inner face of the lateral peripheral wall and disposed in a closure plane separate from the sealing plane, substantially parallel to the sealing plane and offset away from the sealing plane in direction of the bottom of the tray, and shaped to receive a shutter based cardboard in the closed position and to oppose its movement towards the bottom,
  • retaining means shaped to oppose the movement of the shutter towards the outside away from the closed position;
    according to the invention:
  • the tray is made by thermoforming a sheet of thermoformable plastic material, or by injection molding,
  • the retaining means are shaped to retain the cardboard-based shutter resting on the annular bearing shoulder and thus to ensure a sealing tightness.

Une telle barquette est operculable, ce qui limite le coût de fabrication des barquettes et réduit l'impact environnemental.Such a tray is sealable, which limits the cost of manufacturing trays and reduces the environmental impact.

Elle est adaptée pour une fermeture ultérieure sans couvercle additionnel. Son impact environnemental est donc davantage réduit. Son coût de fabrication est également moindre qu'une barquette à couvercle.It is suitable for subsequent closing without additional cover. Its environmental impact is therefore further reduced. Its manufacturing cost is also less than a tray with lid.

En outre, en combinaison, l'épaulement annulaire d'appui et les moyens de retenue aptes à retenir un obturateur à base de carton en appui sur l'épaulement annulaire d'appui constituent des moyens mécaniques spécifiques prévus pour coopérer avec un obturateur à base de carton pour refermer la barquette préalablement ouverte et maintenir l'obturateur dans une position refermée étanche dans laquelle des aliments contenus dans la barquette peuvent être conservés pendant une durée supplémentaire.In addition, in combination, the annular support shoulder and the retaining means adapted to retain a cardboard-based shutter resting on the annular bearing shoulder constitute specific mechanical means designed to cooperate with a shutter based on carton to close the tray previously opened and hold the shutter in a sealed closed position in which food contained in the tray can be stored for an additional period.

Ces moyens mécaniques spécifiques permettent à la fois d'utiliser un obturateur à base de carton, qui réduit ainsi le poids et l'impact environnemental de la barquette, et d'assurer une bonne étanchéité lorsque la barquette est refermée par l'obturateur, garantissant ainsi une meilleure conservation des aliments pendant une durée supplémentaire.These specific mechanical means make it possible at the same time to use a shutter based on cardboard, which thus reduces the weight and the environmental impact of the tray, and to ensure a good seal when the tray is closed by the shutter, guaranteeing thus better preservation of food for an additional duration.

Ces moyens mécaniques spécifiques permettent aussi d'obtenir une tenue mécanique suffisante de l'obturateur pour que la barquette refermée supporte un poids raisonnable sur elle pendant le stockage dans un réfrigérateur.These specific mechanical means also allow to obtain sufficient mechanical strength of the shutter so that the closed container supports a reasonable weight on it during storage in a refrigerator.

Avant remplissage et obturation par un obturateur, de telles barquettes sont empilables les unes sur les autres à l'état emboîté sans risque de coincement, l'épaulement annulaire d'appui constituant une butée limitant l'engagement des barquettes les unes dans les autres.Before filling and closure by a shutter, such trays are stackable on one another in the nested state without risk of jamming, the annular support shoulder constituting a stop limiting the engagement of the trays into each other.

La barquette est conçue pour recevoir des moyens de fermeture en deux positions distinctes, à savoir une première position « position initiale » dans laquelle un opercule est contenu dans le plan d'operculage de la barquette, et une seconde position, à savoir « position fermée », dans laquelle un obturateur est contenu dans le plan de fermeture.The tray is designed to receive closure means in two distinct positions, namely a first position "initial position" in which a lid is contained in the tray sealing plane, and a second position, namely "closed position" In which a shutter is contained in the closure plane.

La barquette permet aussi qu'un même élément, à savoir un obturateur d'operculage, donne à la barquette les avantages d'une barquette operculable mais également ceux d'une barquette munie d'un couvercle.The tray also allows the same element, namely a sealing shutter, gives the tray the benefits of a trays tray but also those of a tray with a lid.

Avant utilisation, la barquette présente un volume de départ défini par le fond de la barquette, la paroi périphérique latérale et le plan d'operculage. La barquette contient alors un volume d'aliments de départ.Before use, the tray has a starting volume defined by the bottom of the tray, the lateral peripheral wall and the lidding plan. The tray then contains a volume of feed.

Lorsqu'un consommateur prélève des aliments contenus dans la barquette et souhaite refermer la barquette, le volume d'aliments est un volume résiduel inférieur au volume d'aliments de départ.When a consumer takes food from the tray and wants to close the tray, the volume of food is a residual volume less than the volume of feed.

Le fait que le plan de fermeture soit déporté à l'écart du plan d'operculage en direction du fond de la barquette permet de définir un volume de la barquette refermée qui est inférieur au volume de départ de la barquette.The fact that the closing plane is deported away from the sealing plane towards the bottom of the tray allows to define a volume of the closed container which is less than the starting volume of the tray.

Ceci permet de limiter la quantité d'air dans la barquette refermée, et permet une meilleure conservation des aliments.This limits the amount of air in the closed container, and allows a better preservation of food.

Le plan d'operculage et le plan de fermeture sont prévus sensiblement parallèles au plan contenant le fond de la barquette. Il est ainsi aisé de poser un autre conteneur alimentaire sur la barquette refermée.The sealing plane and the closure plane are provided substantially parallel to the plane containing the bottom of the tray. It is thus easy to put another food container on the closed container.

On peut avantageusement prévoir que la barquette est réalisée par thermoformage d'une feuille de matière plastique thermoformable d'environ 0,4 mm d'épaisseur.It can advantageously be provided that the tray is made by thermoforming a thermoformable plastic sheet about 0.4 mm thick.

Le thermoformage est une technique de fabrication de conditionnements répandue, simple et peu onéreuse, et la forme extérieure de la paroi latérale d'une telle barquette reproduit alors la forme intérieure de cette paroi, et notamment la présence de l'épaulement annulaire d'appui pour limiter l'engagement des barquettes les unes dans les autres lorsqu'elles sont empilées avant remplissage.Thermoforming is a widespread, simple and inexpensive packaging manufacturing technique, and the outer shape of the side wall of such a tray then reproduces the inner shape of this wall, and in particular the presence of the annular shoulder support to limit the engagement of the trays into each other when stacked before filling.

Avantageusement, on peut prévoir que la barquette est réalisée en polyester, en polypropylène, en polychlorure de vinyle, en polyéthylène téréphtalate amorphe, ou en acide polylactique.Advantageously, it can be provided that the tray is made of polyester, polypropylene, polyvinyl chloride, amorphous polyethylene terephthalate, or polylactic acid.

Ces matières compatibles avec les aliments rendent la barquette utilisable pour contenir des aliments. De plus, ces matières sont transparentes et permettent au consommateur de vérifier le bon état des aliments qu'il s'apprête à acheter.These food compatible materials make the tray usable for holding food. In addition, these materials are transparent and allow the consumer to check the condition of the food he is about to buy.

Il est particulièrement difficile d'assurer une étanchéité satisfaisante d'un obturateur à base de carton, notamment lorsque la barquette est destinée à être maintenue dans une ambiance humide en chambre froide, car le carton a tendance à changer de dimension et de volume lors d'une reprise d'humidité, alors que le corps de barquette en matière plastique est beaucoup moins sensible à l'humidité.It is particularly difficult to ensure a satisfactory seal of a cardboard-based shutter, especially when the tray is intended to be maintained in a humid environment in a cold room, because the carton tends to change size and volume during moisture recovery, while the plastic container body is much less sensitive to moisture.

Pour résoudre ce problème, l'épaulement annulaire d'appui doit présenter une surface suffisante de contact pour l'obturateur. En pratique, de bons résultats peuvent être obtenus en prévoyant que l'épaulement annulaire d'appui présente une largeur utile d'au moins 4 mm, la largeur utile étant la largeur de la zone de contact avec l'obturateur.To solve this problem, the annular support shoulder must have a sufficient contact area for the shutter. In practice, good results can be obtained by providing that the annular bearing shoulder has a useful width of at least 4 mm, the effective width being the width of the contact area with the shutter.

En outre, selon un mode de réalisation avantageux, depuis l'épaulement annulaire d'appui jusqu'au trottoir périphérique d'operculage, la face intérieure de la paroi périphérique latérale peut présenter un tronçon oblique allant en se rétrécissant en direction du trottoir périphérique d'operculage, pour forcer l'obturateur à base de carton en appui sur l'épaulement annulaire d'appui.In addition, according to an advantageous embodiment, from the annular support shoulder to the peripheral lidding sidewalk, the inner face of the lateral peripheral wall may have an oblique section going narrowing towards the peripheral lidding sidewalk, to force the cardboard-based shutter resting on the annular support shoulder.

Le tronçon oblique peut se raccorder directement à l'épaulement annulaire d'appui.The oblique section can be connected directly to the annular support shoulder.

En alternative, entre l'épaulement annulaire d'appui et le tronçon oblique, la face intérieure de la paroi périphérique latérale peut présenter un premier tronçon cylindrique de hauteur inférieure à l'épaisseur de l'obturateur à base de carton.Alternatively, between the annular support shoulder and the oblique section, the inner face of the lateral peripheral wall may have a first cylindrical section of height less than the thickness of the cardboard-based shutter.

Dans les deux cas, de bons résultats d'étanchéité, et une bonne facilité d'introduction et de mise en place de l'obturateur, peuvent être obtenus en prévoyant que le tronçon oblique présente un angle d'inclinaison d'environ 25°, et de préférence une hauteur H1 de tronçon oblique d'environ 3 à 3,5 mm.In both cases, good sealing results, and a good ease of introduction and placement of the shutter, can be obtained by providing that the oblique section has an angle of inclination of about 25 °, and preferably a height H1 oblique section of about 3 to 3.5 mm.

Pour faciliter encore l'introduction et la mise en place de l'obturateur pour refermer la barquette, on peut avantageusement prévoir que, entre le tronçon oblique et le trottoir périphérique d'operculage, la face intérieure de la paroi périphérique latérale présente un tronçon supérieur à plus grand diamètre se raccordant au tronçon oblique par un épaulement d'engagement.To further facilitate the introduction and placement of the shutter to close the tray, it is advantageous that between the oblique section and the peripheral lidding sidewalk, the inner face of the lateral peripheral wall has an upper section. larger diameter connecting to the oblique section by an engagement shoulder.

De façon avantageuse, on peut prévoir que la barquette est associée à :

  • un film plastique apte à être scellé sur le trottoir périphérique d'operculage pour réaliser un opercule obturant l'ouverture principale, et
  • des moyens de rigidification en carton, aptes à rigidifier le film plastique selon au moins un pourtour de rigidification, réalisant un obturateur à base de carton apte à être retenu par l'épaulement annulaire d'appui et les moyens de retenue dans le plan de fermeture pour obturer l'ouverture principale.
Advantageously, it can be provided that the tray is associated with:
  • a plastic film adapted to be sealed on the peripheral lidding sidewalk to make a seal closing the main opening, and
  • cardboard stiffening means, able to stiffen the plastic film according to at least one stiffening periphery, producing a cardboard-based shutter adapted to be retained by the annular support shoulder and the retaining means in the closure plane to close the main opening.

Une telle barquette présente à la fois les avantages d'une barquette operculée et ceux d'une barquette refermable de façon étanche par un obturateur à base de carton.Such a tray has both the advantages of a sealed tray and those of a closable container tightly sealed by a cardboard-based shutter.

De plus, une telle barquette est fermée par un unique élément, l'obturateur, qui peut prendre deux positions de fermeture : une première position de fermeture dans laquelle le film plastique joue son rôle d'opercule, et une seconde position de fermeture dans laquelle le film plastique rigidifié joue le rôle d'obturateur.In addition, such a tray is closed by a single element, the shutter, which can take two closed positions: a first closed position in which the plastic film acts as a seal, and a second closed position in which the stiffened plastic film acts as a shutter.

On peut avantageusement prévoir que les moyens de rigidification en carton sont superposés à la face externe du film plastique.It can advantageously be provided that the stiffening means made of cardboard are superimposed on the outer face of the plastic film.

Les moyens de rigidification peuvent avantageusement être collés au film plastique.The stiffening means may advantageously be glued to the plastic film.

On peut avantageusement prévoir que le film plastique est débordant au-delà du pourtour de rigidification, pour être scellé sur le trottoir périphérique d'operculage.Advantageously, it is possible for the plastic film to protrude beyond the stiffening periphery to be sealed on the peripheral lidding sidewalk.

De façon avantageuse, on peut prévoir que l'obturateur comprend au moins une languette de préhension.Advantageously, it can be provided that the shutter comprises at least one gripping tab.

La languette de préhension constitue un moyen de préhension facilitant la traction de l'obturateur pour son ouverture.The gripping tab is a gripping means facilitating the pulling of the shutter for opening.

Le carton est un matériau avantageux pour réaliser un obturateur léger et ayant un faible impact environnemental. Cependant, le carton entraîne des difficultés pour réaliser une obturation étanche en atmosphère humide et froide, et il convient de choisir la qualité du carton et son épaisseur pour garantir une rigidité suffisante dans les conditions de l'usage prévu de la barquette. Pour cela, on peut avantageusement prévoir que les moyens de rigidification sont en carton kraft dont l'épaisseur est choisie pour présenter une rigidité suffisante pour une obturation étanche de la barquette lorsque l'obturateur est en position refermée. En pratique, on choisira une épaisseur de carton qui est fonction de la surface de l'ouverture principale de la barquette.Cardboard is an advantageous material for achieving a lightweight shutter with low environmental impact. However, the carton causes difficulties in achieving sealing in wet and cold atmosphere, and should choose the quality of the board and its thickness to ensure sufficient rigidity in the conditions of the intended use of the tray. For this, it can be advantageously provided that the stiffening means are kraft paperboard whose thickness is chosen to have sufficient rigidity for sealing the tray when the shutter is in the closed position. In practice, one will choose a thickness of cardboard which is a function of the surface of the main opening of the tray.

Selon un premier mode de réalisation, les moyens de rigidification peuvent être solidarisés au film plastique selon le pourtour de rigidification.According to a first embodiment, the stiffening means may be secured to the plastic film according to the stiffening perimeter.

De la sorte, en position refermée, le film plastique assure une double fonction : d'une part, il isole les moyens de rigidification en carton vis-à-vis des aliments contenus dans la barquette, de sorte qu'il n'est alors pas besoin d'utiliser un carton plastifié si les aliments sont humides ou liquides ; d'autre part, il réalise un joint d'étanchéité entre le pourtour de rigidification et la face intérieure de la paroi périphérique latérale. La durée de conservation des aliments est augmentée par rapport aux barquettes comprenant un obturateur repositionnable connues à ce jour.In this way, in the closed position, the plastic film has a dual function: on the one hand, it insulates the cardboard stiffening means vis-à-vis the food contained in the tray, so that it is then no need to use a laminated cardboard if the food is wet or liquid; on the other hand, it provides a seal between the stiffening perimeter and the inner face of the lateral peripheral wall. The shelf life of food is increased compared to trays with a repositionable shutter known to date.

Selon un second mode de réalisation, les moyens de rigidification peuvent être sous la forme d'une plaque à deux excroissances opposées se raccordant à la partie centrale de plaque par des lignes de prédécoupe, les moyens de rigidification étant solidarisés au film plastique selon les seules excroissances opposées, la partie centrale de plaque étant ainsi détachable du film plastique et ayant une forme appropriée pour constituer l'obturateur.According to a second embodiment, the stiffening means may be in the form of a plate with two opposite protrusions connecting to the central part of the plate by precut lines, the stiffening means being secured to the plastic film according to the only ones protruding, the central plate portion being thus detachable from the plastic film and having a shape suitable for constituting the shutter.

De la sorte, on réalise un obturateur constitué par la seule partie centrale de plaque en carton, et on évite l'aspect peu esthétique d'un rebord d'obturateur formé par la partie périphérique de l'opercule en film mince de matière plastique.In this way, a shutter constituted by the single central portion of the cardboard plate is produced, and the unsightly appearance of a shutter rim formed by the peripheral portion of the thin plastic film cover is avoided.

Le procédé de remplissage de la barquette selon l'invention par des aliments comprend les étapes suivantes :

  • se munir d'une barquette selon le premier aspect de l'invention ;
  • remplir la barquette avec des aliments qu'elle doit contenir ;
  • sceller un film plastique sur le trottoir périphérique de la barquette ;
  • coller une plaque de rigidification en carton sur le film plastique, réalisant ainsi l'obturateur.
The method of filling the tray according to the invention with food comprises the following steps:
  • provide a tray according to the first aspect of the invention;
  • fill the tray with food that it must contain;
  • seal a plastic film on the peripheral sidewalk of the tray;
  • stick a cardboard stiffening plate on the plastic film, thus achieving the shutter.

Ce procédé est facile à mettre en oeuvre, il ne nécessite que l'ajout d'une machine de collage en fin de ligne de production par rapport à une ligne de production classique.This method is easy to implement, it only requires the addition of a bonding machine at the end of the production line compared to a conventional production line.

D'autres objets, caractéristiques et avantages de la présente invention ressortiront de la description suivante de modes de réalisation particuliers, faite en relation avec les figures jointes, parmi lesquelles :

  • la figure 1 est une vue générale en perspective d'une barquette selon un premier mode de réalisation de l'invention, dépourvue d'obturateur ;
  • la figure 2 est une vue générale en perspective de la barquette de la figure 1 avec un ensemble d'obturation, illustrant une position avant scellage ;
  • la figure 3 est une vue de côté de la barquette de la figure 1 avec l'ensemble d'obturation, illustrant la position après scellage ;
  • la figure 4 est une vue générale en perspective de la barquette de la figure 1 avec l'ensemble d'obturation, illustrant la position après scellage ;
  • la figure 5 est une vue générale en perspective de la barquette de la figure 1 avec l'ensemble d'obturation détaché du trottoir d'operculage et conformé en obturateur en position refermée ;
  • la figure 6 est une vue générale en perspective d'une barquette selon un second mode de réalisation de l'invention, dans la position après scellage de l'ensemble d'obturation ;
  • la figure 7 est une vue générale en perspective de la barquette de la figure 6, dans la position refermée ;
  • la figure 8 est une vue générale en perspective d'une barquette selon un troisième mode de réalisation de l'invention, dépourvue d'obturateur ;
  • la figure 9 est une vue générale en perspective de la barquette de la figure 8, avec un ensemble d'obturation en position surélevée avant scellage ;
  • la figure 10 est une vue générale en perspective de la barquette de la figure 8, avec l'ensemble d'obturation en position d'obturation après scellage ;
  • la figure 11 est une vue générale en perspective de la barquette de la figure 8 en position refermée ;
  • la figure 12 est une vue de côté de la barquette de la figure 8 en position refermée ;
  • la figure 13 est une vue générale en perspective d'une barquette selon un quatrième mode de réalisation de l'invention, avec l'ensemble d'obturation en position surélevée avant scellage ;
  • la figure 14 est une vue générale en perspective de la barquette de la figure 13, dans la position d'obturation après scellage ;
  • la figure 15 est une vue en perspective d'une barquette selon un cinquième mode de réalisation de l'invention, illustrant une réalisation différente des moyens de retenue ;
  • la figure 16 est une vue de côté de la barquette de la figure 15 ;
  • la figure 17 est une vue de détail en coupe verticale du bord supérieur périphérique de la barquette des figures 15 et 16 ;
  • la figure 18 est une vue de dessus d'un moyen de rigidification en carton selon une réalisation, destiné à être fixé selon un pourtour de rigidification à un film plastique d'operculage ;
  • la figure 19 est une vue de dessus illustrant un moyen de rigidification en carton selon une autre réalisation, destiné à être fixé selon deux excroissances opposées à un film plastique d'operculage et à en être détaché pour constituer l'obturateur ; et
  • la figure 20 est un diagramme illustrant le choix du grammage de carton en fonction de la surface de l'ouverture principale de la barquette.
Other objects, features and advantages of the present invention will become apparent from the following description of particular embodiments, with reference to the accompanying drawings, in which:
  • the figure 1 is a general perspective view of a tray according to a first embodiment of the invention, without shutter;
  • the figure 2 is a general perspective view of the tray of the figure 1 with a shutter assembly, illustrating a position prior to sealing;
  • the figure 3 is a side view of the tray of the figure 1 with the shutter assembly, illustrating the position after sealing;
  • the figure 4 is a general perspective view of the tray of the figure 1 with the shutter assembly, illustrating the position after sealing;
  • the figure 5 is a general perspective view of the tray of the figure 1 with the shutter assembly detached from the lidding sidewalk and shaped as a shutter in the closed position;
  • the figure 6 is a general perspective view of a tray according to a second embodiment of the invention, in the position after sealing of the closure assembly;
  • the figure 7 is a general perspective view of the tray of the figure 6 in the closed position;
  • the figure 8 is a general perspective view of a tray according to a third embodiment of the invention, without shutter;
  • the figure 9 is a general perspective view of the tray of the figure 8 , with a closure assembly in an elevated position prior to sealing;
  • the figure 10 is a general perspective view of the tray of the figure 8 , with the shutter assembly in the closed position after sealing;
  • the figure 11 is a general perspective view of the tray of the figure 8 in closed position;
  • the figure 12 is a side view of the tray of the figure 8 in closed position;
  • the figure 13 is a general perspective view of a tray according to a fourth embodiment of the invention, with the closure assembly in raised position before sealing;
  • the figure 14 is a general perspective view of the tray of the figure 13 , in the closed position after sealing;
  • the figure 15 is a perspective view of a tray according to a fifth embodiment of the invention, illustrating a different embodiment of the retaining means;
  • the figure 16 is a side view of the tray of the figure 15 ;
  • the figure 17 is a detail view in vertical section of the peripheral upper edge of the tray of Figures 15 and 16 ;
  • the figure 18 is a top view of a cardboard stiffening means according to one embodiment, intended to be fixed according to a stiffening perimeter to a plastic lidding film;
  • the figure 19 is a top view illustrating a cardboard stiffening means according to another embodiment, intended to be fixed in two protrusions opposite to a plastic lidding film and to be detached to form the shutter; and
  • the figure 20 is a diagram illustrating the choice of paperboard weight according to the surface of the main opening of the tray.

Les figures 1 à 7 illustrent un premier et un second modes de réalisation d'une barquette selon l'invention. Dans ces deux modes de réalisation, la barquette est de contour rectangulaire. Les figures 1 à 5 illustrent une première barquette avec un obturateur non-ajouré. Les figures 6 et 7 illustrent une seconde barquette avec un obturateur ajouré ayant une lumière 14.The Figures 1 to 7 illustrate first and second embodiments of a tray according to the invention. In these two embodiments, the tray is of rectangular shape. The Figures 1 to 5 illustrate a first tray with a non-perforated shutter. The figures 6 and 7 illustrate a second tray with a perforated shutter having a light 14.

Les figures 8 à 14 illustrent un troisième et un quatrième modes de réalisation d'une barquette selon l'invention. Dans ces deux modes de réalisation, la barquette est de contour sensiblement circulaire. Les figures 8 à 12 illustrent une troisième barquette avec un obturateur comprenant une languette de préhension. Les figures 13 et 14 illustrent une quatrième barquette avec un obturateur comprenant deux languettes de préhension.The Figures 8 to 14 illustrate third and fourth embodiments of a tray according to the invention. In these two embodiments, the tray is of substantially circular contour. The Figures 8 to 12 illustrate a third tray with a shutter comprising a gripping tab. The figures 13 and 14 illustrate a fourth tray with a shutter comprising two gripping tabs.

Les figures 15 à 17 illustrent un cinquième mode de réalisation d'une barquette selon l'invention, dans laquelle les moyens de retenue sont continus selon tout le pourtour de la barquette.The Figures 15 to 17 illustrate a fifth embodiment of a tray according to the invention, wherein the retaining means are continuous along the entire periphery of the tray.

Les mêmes moyens essentiels sont repérés par les mêmes références numériques sur chacune des figures.The same essential means are identified by the same reference numerals in each of the figures.

La figure 1 illustre une barquette 1 dépourvue d'obturateur. La barquette 1 est sensiblement rectangulaire et présente quatre coins C1, C2, C3 et C4.The figure 1 illustrates a tray 1 without shutter. The tray 1 is substantially rectangular and has four corners C1, C2, C3 and C4.

Elle comprend une cavité 2 limitée par une paroi périphérique latérale 3 et un fond 4, et ouverte selon une ouverture principale opposée au fond 4.It comprises a cavity 2 limited by a lateral peripheral wall 3 and a bottom 4, and open in a main opening opposite the bottom 4.

La barquette 1 comprend un trottoir périphérique 5 d'operculage, bordant l'ouverture principale, conformé selon un plan d'operculage PO.The tray 1 comprises a peripheral sidewalk 5 lidding, bordering the main opening, shaped according to a sealing plane PO.

La barquette 1 comprend en outre, sur la face intérieure de la paroi périphérique latérale 3, des moyens de butée sous forme d'un épaulement 6, et des moyens de retenue sous forme de nervures telles que les nervures 7c-7f, de longueur L.The tray 1 further comprises, on the inner face of the lateral peripheral wall 3, abutment means in the form of a shoulder 6, and retaining means in the form of ribs such as the ribs 7c-7f, of length L .

L'épaulement 6 est contenu dans un plan de fermeture PF sensiblement parallèle au plan d'operculage PO et déporté à l'écart du plan d'operculage PO en direction du fond 4 de la barquette.The shoulder 6 is contained in a closure plane PF substantially parallel to the sealing plane PO and offset away from the sealing plane PO towards the bottom 4 of the tray.

L'épaulement 6 est conformé pour recevoir un obturateur 9 (figures 2 à 5) en position refermée et s'opposer à son déplacement en direction du fond 4. L'épaulement 6 est continu dans les modes de réalisation illustrés, pour assurer une étanchéité de fermeture de la barquette lors de l'adaptation d'un obturateur 9.The shoulder 6 is shaped to receive a shutter 9 ( Figures 2 to 5 ) in the closed position and oppose its movement in the direction of the bottom 4. The shoulder 6 is continuous in the illustrated embodiments, to ensure a closing seal of the tray during the adaptation of a shutter 9.

Les nervures 7c-7f sont conformées pour s'opposer au déplacement d'un obturateur 9 (figures 2 à 5) en direction de l'extérieur à l'écart de la position refermée, et pour plaquer l'obturateur 9 sur l'épaulement 6.The ribs 7c-7f are shaped to oppose the displacement of a shutter 9 ( Figures 2 to 5 ) towards the outside away from the closed position, and to press the shutter 9 on the shoulder 6.

L'épaulement 6 et les nervures 7c-7f constituent des moyens d'encliquetage conformés pour recevoir et maintenir un obturateur 9 (figures 2 à 5) dans une position refermée obturant l'ouverture principale et dans laquelle l'obturateur 9 (figures 2 à 5) est contenu dans un plan de fermeture PF distinct du plan d'operculage PO.The shoulder 6 and the ribs 7c-7f constitute latching means shaped to receive and hold a shutter 9 (FIG. Figures 2 to 5 ) in a closed position closing the main opening and in which the shutter 9 ( Figures 2 to 5 ) is contained in a closing plane PF separate from the sealing plane PO.

Compte tenu de l'utilisation qui est prévue pour la barquette selon l'invention, le plan de fermeture PF est prévu à faible distance sous le plan d'operculage PO.Given the use that is provided for the tray according to the invention, the closing plane PF is provided at a short distance under the sealing plane PO.

Par exemple, pour une barquette d'environ 150 mm de longueur, 130 mm de profondeur, 60 mm de hauteur, l'épaulement 6 est prévu à environ 6 mm sous le plan d'operculage PO, et les nervures 7c-7f sont prévues 1 mm au-dessus de l'épaulement 6. Les nervures 7c-7f peuvent être sous la forme d'un prisme présentant les dimensions suivantes : 15 mm de longueur, 3 mm de hauteur et 1 mm de profondeur, comportant une face inférieure d'appui oblique pour forcer l'obturateur 9 en appui sur l'épaulement 6. La face inférieure d'appui oblique peut faire un angle d'inclinaison d'environ 25° par rapport à la paroi périphérique latérale 3 de la barquette. Les nervures 7c-7f peuvent être avantageusement prévues à une distance d'environ 10 mm de chaque coin.For example, for a tray about 150 mm long, 130 mm deep, 60 mm high, the shoulder 6 is provided at about 6 mm under the sealing plane PO, and the ribs 7c-7f are provided 1 mm above the shoulder 6. The ribs 7c-7f may be in the form of a prism having the following dimensions: 15 mm in length, 3 mm in height and 1 mm in depth, comprising a lower face of oblique support to force the shutter 9 to bear on the shoulder 6. The underside of oblique support can make an angle of inclination of about 25 ° relative to the lateral peripheral wall 3 of the tray. The ribs 7c-7f may advantageously be provided at a distance of about 10 mm from each corner.

La figure 2 illustre la barquette 1 avant scellage de l'obturateur 9.The figure 2 illustrates the tray 1 before sealing the shutter 9.

L'obturateur 9 comprend un film plastique 10 et une plaque de rigidification 11 en carton. Le film plastique 10 déborde au-delà de la plaque de rigidification 11 en carton pour permettre son scellage sur le trottoir périphérique 5 d'operculage.The shutter 9 comprises a plastic film 10 and a stiffening plate 11 made of cardboard. The plastic film 10 protrudes beyond the cardboard stiffening plate 11 to allow its sealing on the lidding peripheral sidewalk 5.

Sur la figure 3, on distingue les nervures 7a et 7b prévues sur la partie antérieure de la paroi latérale 3. De même, des nervures 7g et 7h, non représentées sur les figures 1 à 7, sont prévues sur la partie droite de la face latérale 3.On the figure 3 , there are ribs 7a and 7b provided on the front portion of the side wall 3. Similarly, ribs 7g and 7h, not shown on the Figures 1 to 7 , are provided on the right side of the side face 3.

Comme illustré sur la figure 5, en position refermée, le film plastique 10 déborde au-delà de la plaque de rigidification 11 et réalise un joint d'étanchéité entre la plaque de rigidification 11 et la face intérieure de la paroi périphérique latérale 3. Simultanément, le film plastique 10 isole la plaque de rigidification 11 en carton vis-à-vis du contenu éventuellement humide de la barquette 1.As illustrated on the figure 5 in the closed position, the plastic film 10 protrudes beyond the stiffening plate 11 and provides a seal between the stiffening plate 11 and the inner face of the lateral peripheral wall 3. Simultaneously, the plastic film 10 isolates the cardboard stiffening plate 11 vis-à-vis the possibly wet content of the tray 1.

Dans ce mode de réalisation, le film plastique 10 comprend une languette de préhension 12, et la plaque de rigidification 11 comprend une languette de préhension 13.In this embodiment, the plastic film 10 comprises a gripping tab 12, and the stiffening plate 11 comprises a gripping tab 13.

La languette de préhension 12 est prévue dans le coin C1, et la languette de préhension 13 est prévue dans le coin C3.The gripping tab 12 is provided in the corner C1, and the gripping tab 13 is provided in the corner C3.

Les languettes de préhension 12 et 13 sont diamétralement opposées.The gripping tabs 12 and 13 are diametrically opposed.

Le remplissage et l'utilisation de la barquette 1 vont maintenant être décrits.The filling and use of the tray 1 will now be described.

Le remplissage de la barquette 1 comprend les étapes suivantes :

  • se munir d'une barquette 1 selon le premier aspect de l'invention ;
  • remplir la barquette 1 avec des aliments qu'elle doit contenir ;
  • sceller un film plastique 10 sur le trottoir périphérique 5 de la barquette 1 ;
  • coller une plaque de rigidification 11 sur le film plastique 10, réalisant ainsi l'obturateur 9.
The filling of the tray 1 comprises the following steps:
  • provide a tray 1 according to the first aspect of the invention;
  • fill the tray 1 with food that it must contain;
  • sealing a plastic film 10 on the peripheral sidewalk 5 of the tray 1;
  • sticking a stiffening plate 11 on the plastic film 10, thereby forming the shutter 9.

Pour le scellage, le film plastique 10 est positionné au-dessus de la barquette 1 de façon à ce que son pourtour extérieur soit en correspondance du trottoir périphérique 5.For sealing, the plastic film 10 is positioned above the tray 1 so that its outer periphery is in correspondence of the peripheral sidewalk 5.

Le film plastique 10 est ensuite descendu jusqu'à ce que le pourtour du film plastique 10 soit en contact avec le trottoir périphérique 5. Le scellage peut alors être réalisé. La barquette 1 de la figure 4 est alors obtenue.The plastic film 10 is then lowered until the periphery of the plastic film 10 is in contact with the peripheral sidewalk 5. The sealing can then be performed. The tray 1 of the figure 4 is then obtained.

La plaque de rigidification 11, préalablement imprimée sur une ou deux faces le cas échéant, est ensuite collée sur la face externe du film plastique 10 pour réaliser l'obturateur 9.The stiffening plate 11, previously printed on one or both sides if necessary, is then glued on the outer face of the plastic film 10 to make the shutter 9.

Pour l'utilisation de la barquette 1, le consommateur peut désolidariser l'obturateur 9 de la barquette 1 en tirant sur la languette de préhension 12. La barquette 1 est alors ouverte, le consommateur peut accéder aux aliments contenus dans la barquette 1.For the use of the tray 1, the consumer can disengage the shutter 9 of the tray 1 by pulling on the gripping tab 12. The tray 1 is then open, the consumer can access the food contained in the tray 1.

Pour refermer la barquette 1, le consommateur engage l'obturateur 9 dans la cavité 2 jusqu'à ce qu'il porte sur l'épaulement 6 et soit retenu par les nervures 7a-7h. La barquette 1 de la figure 5 est ainsi obtenue.To close the tray 1, the consumer engages the shutter 9 in the cavity 2 until it bears on the shoulder 6 and is retained by the ribs 7a-7h. The tray 1 of the figure 5 is thus obtained.

Pour ouvrir de nouveau la barquette 1, le consommateur peut utiliser l'une ou l'autre des languettes de préhension 12 et 13. Le consommateur peut s'il le souhaite refermer à nouveau la barquette 1.To open the tray 1 again, the consumer can use either of the gripping tabs 12 and 13. The consumer can if he wishes to close the tray 1 again.

Dans ce mode de réalisation, la plaque de rigidification 11 n'est pas ajourée. La surface de communication est donc maximale.In this embodiment, the stiffening plate 11 is not perforated. The communication surface is therefore maximum.

Les figures 6 et 7 illustrent un mode de réalisation dans lequel la plaque de rigidification 11 de l'obturateur 9 présente une ouverture 14. L'obturateur 9 est ainsi ajouré de façon à laisser visible une partie des aliments contenus dans la barquette 1, de façon à attirer le consommateur.The figures 6 and 7 illustrate an embodiment in which the stiffening plate 11 of the shutter 9 has an opening 14. The shutter 9 is thus perforated so as to leave visible part of the food contained in the tray 1, so as to attract the consumer .

Les figures 8 à 12 illustrent un mode de réalisation dans lequel la barquette 1 a un contour sensiblement circulaire, et l'obturateur 9 comprend une unique languette de préhension 12.The Figures 8 to 12 illustrate an embodiment in which the tray 1 has a substantially circular contour, and the shutter 9 comprises a single gripping tab 12.

Les mêmes moyens essentiels sont repérés par les mêmes références numériques que sur les figures des modes de réalisation précédemment décrits.The same essential means are identified by the same reference numerals as in the figures of the embodiments described above.

La figure 8 illustre une barquette 1 à contour circulaire et dépourvue d'obturateur 9 (figures 9 à 12). L'épaulement 6 est continu. Sur la figure, seules des nervures 7g, 7h, 7a, 7b et 7e sont visibles. On comprendra que des nervures 7d, 7e et 7f sont prévues sur la partie antérieure cachée de la paroi latérale 3. Les nervures 7a-7h sont illustrées de sorte que les nervures 7b, 7d, 7f, 7h présentent une longueur L1 et que les nervures 7a, 7c, 7e, 7g présentent une longueur L2, avec L1 égal environ au double de L2.The figure 8 illustrates a tray 1 with a circular contour and no shutter 9 ( Figures 9 to 12 ). The shoulder 6 is continuous. In the figure, only ribs 7g, 7h, 7a, 7b and 7e are visible. It will be understood that ribs 7d, 7e and 7f are provided on the concealed front part of the side wall 3. The ribs 7a-7h are illustrated so that the ribs 7b, 7d, 7f, 7b have a length L1 and the ribs 7a, 7c, 7e, 7g have a length L2, with L1 equal to about twice L2.

Par exemple, pour une barquette d'environ 150 mm de diamètre, et 60 mm de hauteur, les nervures 7b, 7d, 7f et 7h présentent une longueur L1 d'environ 40 mm, et les nervures 7a, 7c, 7e et 7g présentent une longueur L2 d'environ 20 mm.For example, for a tray of about 150 mm in diameter, and 60 mm in height, the ribs 7b, 7d, 7f and 7h have a length L1 of about 40 mm, and the ribs 7a, 7c, 7e and 7g present a length L2 of about 20 mm.

Le remplissage et l'utilisation comprennent les mêmes étapes pour l'ensemble des modes de réalisation illustrés.The filling and use include the same steps for all the illustrated embodiments.

Les figures 13 et 14 illustrent un quatrième mode de réalisation. La seule différence par rapport au troisième mode de réalisation réside dans les deux languettes de préhension 12 et 13, diamétralement opposées.The figures 13 and 14 illustrate a fourth embodiment. The only difference with respect to the third embodiment lies in the two tongues 12 and 13, diametrically opposed.

On considère maintenant le mode de réalisation illustré sur les figures 15 à 19, dans lequel les mêmes moyens essentiels sont repérés par les mêmes références numériques que sur les figures des modes de réalisation précédemment décrits.We now consider the embodiment illustrated on the Figures 15 to 19 , in which the same essential means are identified by the same reference numerals as in the figures of the previously described embodiments.

Sur les figures 15 et 16, on distingue à nouveau la cavité 2, la paroi périphérique latérale 3, le fond 4, le trottoir périphérique 5 d'operculage, l'épaulement annulaire d'appui 6.On the Figures 15 and 16 , there is again the cavity 2, the lateral peripheral wall 3, the bottom 4, the peripheral sidewalk 5 lidding, the annular support shoulder 6.

Dans ce mode de réalisation, les moyens de retenue sont sous la forme d'une nervure 7 annulaire continue dont la forme est mieux visible sur la vue en coupe de la figure 17.In this embodiment, the retaining means are in the form of a continuous annular rib 7 whose shape is better visible in the sectional view of the figure 17 .

Comme on le voit sur cette figure 17, l'épaulement annulaire d'appui 6 présente une largeur utile L3 que l'on choisit égale à au moins 4 mm.As we see on this figure 17 , the annular support shoulder 6 has a useful width L3 that is chosen to be at least 4 mm.

Depuis l'épaulement annulaire d'appui 6 jusqu'au trottoir périphérique 5 d'operculage, la face intérieure de la paroi périphérique latérale 3 présente un tronçon oblique 70 allant en se rapprochant du centre de la barquette 1 en direction du trottoir périphérique 5 d'operculage. Le tronçon oblique 70 présente un angle d'inclinaison A dont la valeur peut avantageusement être d'environ 25°. Sa hauteur H1 peut avantageusement être d'environ 3 à 3,5 mm.From the annular support shoulder 6 to the peripheral sidewalk 5 of lidding, the inner face of the lateral peripheral wall 3 has an oblique section 70 going closer to the center of the tray 1 towards the peripheral sidewalk 5 d lidding. The oblique section 70 has an angle of inclination A whose value may advantageously be about 25 °. Its height H1 may advantageously be about 3 to 3.5 mm.

L'épaulement annulaire d'appui 6 se raccorde au tronçon oblique 70 par un premier tronçon cylindrique 71 de faible hauteur, sa hauteur devant être inférieure à l'épaisseur de l'obturateur 9 destiné à être engagé sur l'épaulement annulaire d'appui 6 pour refermer la barquette 1.The annular support shoulder 6 is connected to the oblique section 70 by a first cylindrical section 71 of low height, its height to be less than the thickness of the shutter 9 intended to be engaged on the annular support shoulder 6 to close the tray 1.

Comme on le voit encore sur cette figure 17, entre le tronçon oblique 70 et le trottoir périphérique 5 d'operculage, la face intérieure de la paroi périphérique latérale 3 présente un tronçon supérieur 72 à plus grand diamètre se raccordant au tronçon oblique 70 par un épaulement d'engagement 73.As we still see on this figure 17 , between the oblique section 70 and the peripheral lining sidewalk 5, the inner face of the lateral peripheral wall 3 has a larger diameter upper section 72 connecting to the oblique section 70 by an engagement shoulder 73.

La hauteur H entre l'épaulement annulaire d'appui 6 et le trottoir périphérique 5 d'operculage est d'environ 6 mm. La largeur du trottoir périphérique 5 d'operculage est d'environ 5 mm, pour assurer une bonne fixation étanche de l'opercule.The height H between the annular support shoulder 6 and the peripheral sidewalk 5 lidding is about 6 mm. The width of the sidewalk lidding 5 is about 5 mm, to ensure good sealing of the lid.

Les dimensions ainsi illustrées sur la figure 17 pour l'épaulement annulaire d'appui 6 et les moyens de retenue en forme de nervure 7 annulaire continue constituent un bon compromis pour réaliser une bonne étanchéité de fermeture par un obturateur 9 en carton sans augmenter sensiblement la largeur hors tout de la barquette 1.The dimensions thus illustrated on the figure 17 for the annular support shoulder 6 and the continuous annular rib-shaped retaining means 7 constitute a good compromise for achieving a good seal of closure by a shutter 9 cardboard without substantially increasing the overall width of the tray 1.

Le corps de barquette 1 illustré sur les figures 15 à 17 présente un contour rectangulaire ou carré à coins arrondis. Une même structure de moyens de retenue à nervure annulaire continue 7 pourrait tout aussi bien s'adapter à un corps de barquette présentant une autre forme de contour, par exemple un contour circulaire comme illustré sur la figure 8.The container body 1 illustrated on the Figures 15 to 17 has a rectangular or square contour with rounded corners. The same structure of retaining means with continuous annular rib 7 could equally well be adapted to a container body having another shape of contour, for example a circular contour as illustrated on FIG. figure 8 .

La figure 18 illustre une plaque de rigidification 11 à contour carré destinée à s'adapter dans le corps de barquette 1 illustré sur les figures 15 et 16 pour constituer l'obturateur 9 lorsqu'elle est associée à un film plastique formant opercule. Dans ce cas, la plaque de rigidification 11 comporte également une lumière 14 permettant sa préhension. Pour cela, la plaque de rigidification 11 est solidarisée au film plastique selon le pourtour de rigidification 110. On notera que le film plastique obture la lumière 14 pour garantir l'étanchéité de l'obturateur 9.The figure 18 illustrates a stiffening plate 11 with a square contour intended to fit in the tray body 1 illustrated on the Figures 15 and 16 to form the shutter 9 when associated with a plastic film forming a lid. In this case, the stiffening plate 11 also comprises a light 14 for gripping. For this, the stiffening plate 11 is secured to the plastic film according to the stiffening perimeter 110. Note that the plastic film closes the light 14 to ensure the sealing of the shutter 9.

La figure 19 illustre un autre mode de réalisation de la plaque de rigidification 11 à contour carré destiné à s'adapter dans le corps de barquette 1 illustré sur les figures 15 et 16 pour constituer l'obturateur 9. Dans ce cas, la plaque de rigidification 11 est également associée à un film plastique formant opercule. Toutefois, la plaque de rigidification 11 comporte alors deux excroissances 111 et 112 opposées l'une par rapport à l'autre et se raccordant à la partie centrale rectangulaire de la plaque 11 par des lignes de prédécoupe respectives 113 et 114. La plaque de rigidification 11 est solidarisée au film plastique selon les seules excroissances opposées 111 et 112. Elle comporte également une excroissance formant languette de préhension 13, sur un côté dépourvu des excroissances 111 et 112, et reliée à la partie centrale rectangulaire de la plaque 11 par une ligne de pliage 115.The figure 19 illustrates another embodiment of the stiffening plate 11 with a square contour intended to fit into the tray body 1 illustrated on the FIG. Figures 15 and 16 to form the shutter 9. In this case, the stiffening plate 11 is also associated with a plastic film forming a lid. However, the stiffening plate 11 then comprises two protuberances 111 and 112 opposite one another and connecting to the rectangular central portion of the plate 11 by respective precut lines 113 and 114. The stiffening plate It is secured to the plastic film according to the only opposite protuberances 111 and 112. It also comprises a protrusion forming a gripping tongue 13, on a side devoid of the protrusions 111 and 112, and connected to the rectangular central portion of the plate 11 by a line folding 115.

De la sorte, la partie centrale rectangulaire de la plaque 11 est détachable du film plastique par sectionnement le long des lignes de prédécoupe 113 et 114, pour former à elle seule l'obturateur destiné à s'engager dans la barquette 1 selon les figures 15 et 16.In this way, the rectangular central portion of the plate 11 is detachable from the plastic film by cutting along the precut lines 113 and 114, to form by itself the shutter intended to engage in the tray 1 according to the Figures 15 and 16 .

Dans tous les modes de réalisation, le carton formant la plaque de rigidification 11 devra être choisi ni trop rigide (400 g/m2) ni trop souple (200 g/m2). Il pourra généralement être d'environ 300 g/m2.In all embodiments, the board forming the stiffening plate 11 should be chosen neither too rigid (400 g / m 2 ) nor too soft (200 g / m 2 ). It can generally be about 300 g / m 2 .

En pratique, il conviendra de choisir l'épaisseur du carton de façon à ce que la plaque présente une rigidité juste suffisante pour une obturation étanche de la barquette 1 lorsque l'obturateur 9 est en position refermée. La rigidité nécessaire dépend de la dimension de l'ouverture principale de la barquette 1. On comprend que, lorsque l'ouverture principale est petite, une obturation étanche peut être assurée avec une plaque de rigidification 11 dont le carton est relativement flexible. Par contre, lorsque l'ouverture principale est grande, une obturation étanche nécessite une plaque de rigidification 11 dont le carton est beaucoup plus rigide. En pratique, on pourra choisir le grammage du carton, et donc son épaisseur, en suivant le diagramme illustré sur la figure 20, dans lequel on a porté en ordonnée le grammage en grammes par mètre carré du carton, et on a porté en abscisse la surface en décimètres carrés de l'ouverture principale de la barquette 1.In practice, it will be necessary to choose the thickness of the carton so that the plate has a rigidity just sufficient to seal tightly of the tray 1 when the shutter 9 is in the closed position. The rigidity required depends on the size of the main opening of the tray 1. We understand that, when the main opening is small, sealing can be ensured with a stiffening plate 11 whose cardboard is relatively flexible. On the other hand, when the main opening is large, a sealed closure requires a stiffening plate 11 whose cardboard is much more rigid. In practice, we can choose the weight of the cardboard, and therefore its thickness, by following the diagram shown on the figure 20 , in which the grammage in grams per square meter of the carton was plotted on the ordinate, and the area in square decimetres of the main opening of the tray 1 was plotted on the abscissa.

La présente invention n'est pas limitée aux modes de réalisation qui ont été explicitement décrits, mais elle en inclut les diverses variantes et généralisations contenues dans le domaine des revendications ci-après.The present invention is not limited to the embodiments which have been explicitly described, but it includes the various variants and generalizations thereof within the scope of the claims below.

Claims (15)

Barquette (1) pour contenir des aliments, comprenant : - au moins une cavité (2) limitée par une paroi périphérique latérale (3) et un fond (4) et ouverte selon une ouverture principale opposée au fond (4), - un trottoir périphérique (5) d'operculage, bordant l'ouverture principale, conformé selon un plan d'operculage (PO), et apte à recevoir un opercule pour obturer l'ouverture principale, - un épaulement annulaire d'appui (6), dépassant de la face intérieure de la paroi périphérique latérale (3) et disposé selon un plan de fermeture (PF) distinct du plan d'operculage (PO), sensiblement parallèle au plan d'operculage (PO) et déporté à l'écart du plan d'operculage (PO) en direction du fond (4) de la barquette (1), et conformé pour recevoir un obturateur (9) à base de carton en position refermée et pour s'opposer à son déplacement en direction du fond (4), - des moyens de retenue (7, 7a-7h) conformés pour s'opposer au déplacement de l'obturateur (9) en direction de l'extérieur à l'écart de la position refermée, caractérisée en ce que : - la barquette (1) est réalisée par thermoformage d'une feuille de matière plastique thermoformable, ou par moulage par injection, - les moyens de retenue (7, 7a-7h) sont conformés pour retenir l'obturateur (9) à base de carton en appui sur l'épaulement annulaire d'appui (6) et pour assurer ainsi une étanchéité de fermeture. Tray (1) for holding food, comprising: at least one cavity (2) bounded by a lateral peripheral wall (3) and a bottom (4) and open at a main opening opposite the bottom (4), - A peripheral sidewalk (5) lidding, bordering the main opening, shaped according to a sealing plane (PO), and adapted to receive a lid to close the main opening, an annular support shoulder (6) protruding from the inner face of the lateral peripheral wall (3) and arranged in a closure plane (PF) distinct from the sealing plane (PO), substantially parallel to the plane of sealing (PO) and offset away from the sealing plane (PO) towards the bottom (4) of the tray (1), and shaped to receive a shutter (9) based on cardboard in the closed position and for oppose his movement towards the bottom (4), - Retaining means (7, 7a-7h) shaped to oppose the displacement of the shutter (9) towards the outside away from the closed position, characterized in that : the tray (1) is produced by thermoforming a sheet of thermoformable plastic material, or by injection molding, - The retaining means (7, 7a-7h) are shaped to retain the shutter (9) based on cardboard bearing on the annular support shoulder (6) and thus to provide a sealing tightness. Barquette (1) selon la revendication 1, caractérisée en ce qu'elle est réalisée par thermoformage d'une feuille de matière plastique thermoformable d'environ 0,4 mm d'épaisseur.Tray (1) according to claim 1, characterized in that it is made by thermoforming a thermoformable plastic sheet of about 0.4 mm thick. Barquette (1) selon l'une des revendications 1 ou 2, caractérisée en ce qu'elle est réalisée en polyester, en polypropylène, en polychlorure de vinyle, en polyéthylène téréphtalate amorphe, ou en acide polylactique.Tray (1) according to one of claims 1 or 2, characterized in that it is made of polyester, polypropylene, polyvinyl chloride, amorphous polyethylene terephthalate, or polylactic acid. Barquette (1) selon l'une quelconque des revendications 1 à 3, caractérisée en ce que l'épaulement annulaire d'appui (6) présente une largeur utile (L3) d'au moins 4 mm.Tray (1) according to any one of claims 1 to 3, characterized in that the annular support shoulder (6) has a useful width (L3) of at least 4 mm. Barquette (1) selon l'une quelconque des revendications 1 à 4, caractérisée en ce que, depuis l'épaulement annulaire d'appui (6) jusqu'au trottoir périphérique (5) d'operculage, la face intérieure de la paroi périphérique latérale (3) présente un tronçon oblique (70) allant en se rétrécissant en direction du trottoir périphérique (5) d'operculage, pour forcer l'obturateur (9) à base de carton en appui sur l'épaulement annulaire d'appui (6).Tray (1) according to any one of claims 1 to 4, characterized in that , from the annular support shoulder (6) to the peripheral sidewalk (5) sealing, the inner face of the peripheral wall lateral section (3) has an oblique section (70) narrowing towards the peripheral liner (5) for forcing the cardboard-based shutter (9) against the annular supporting shoulder ( 6). Barquette (1) selon la revendication 5, caractérisée en ce que, entre l'épaulement annulaire d'appui (6) et le tronçon oblique (70), la face intérieure de la paroi périphérique latérale (3) présente un premier tronçon cylindrique (71) de hauteur inférieure à l'épaisseur de l'obturateur (9) à base de carton.Tray (1) according to claim 5, characterized in that , between the annular bearing shoulder (6) and the oblique section (70), the inner face of the lateral peripheral wall (3) has a first cylindrical section ( 71) of lower height than the thickness of the shutter (9) based on cardboard. Barquette (1) selon l'une des revendications 5 ou 6, caractérisée en ce que le tronçon oblique (70) présente un angle d'inclinaison (A) d'environ 25°.Tray (1) according to one of claims 5 or 6, characterized in that the oblique section (70) has an inclination angle (A) of about 25 °. Barquette (1) selon l'une quelconque des revendications 5 à 7, caractérisée en ce que, entre le tronçon oblique (70) et le trottoir périphérique d'operculage (5), la face intérieure de la paroi périphérique latérale (3) présente un tronçon supérieur (72) à plus grand diamètre se raccordant au tronçon oblique (70) par un épaulement d'engagement (73).Tray (1) according to any one of claims 5 to 7, characterized in that , between the oblique section (70) and the peripheral lidding sidewalk (5), the inner face of the lateral peripheral wall (3) has a larger diameter upper section (72) connecting to the oblique section (70) by an engagement shoulder (73). Barquette (1) selon l'une quelconque des revendications 1 à 8, caractérisée en ce qu'elle est associée à : - un film plastique (10) apte à être scellé sur le trottoir périphérique (5) d'operculage pour réaliser un opercule obturant l'ouverture principale, et - des moyens de rigidification (11) en carton, aptes à rigidifier le film plastique (10) selon au moins un pourtour de rigidification, réalisant un obturateur (9) à base de carton apte à être retenu par l'épaulement annulaire d'appui (6) et les moyens de retenue (7, 7a-7h) dans le plan de fermeture (PF) pour obturer l'ouverture principale. Tray (1) according to any one of claims 1 to 8, characterized in that it is associated with: a plastic film (10) able to be sealed on the peripheral sidewalk (5) for sealing a lid closing the main opening, and - stiffening means (11) made of cardboard, able to stiffen the plastic film (10) according to at least one stiffening perimeter, producing a shutter (9) based on cardboard adapted to be retained by the annular shoulder support (6) and the retaining means (7, 7a-7h) in the closure plane (PF) to close the main opening. Barquette (1) selon la revendication 9, caractérisée en ce que les moyens de rigidification (11) en carton sont superposés à la face externe du film plastique (10).Tray (1) according to claim 9, characterized in that the stiffening means (11) of cardboard are superimposed on the outer face of the plastic film (10). Barquette (1) selon l'une des revendications 9 ou 10, caractérisée en ce que le film plastique (10) est débordant au-delà du pourtour de rigidification, pour être scellé sur le trottoir périphérique (5) d'operculage.Tray (1) according to one of claims 9 or 10, characterized in that the plastic film (10) is protruding beyond the stiffening perimeter, to be sealed on the peripheral sidewalk (5) lidding. Barquette (1) selon l'une quelconque des revendications 9 à 11, caractérisée en ce que l'obturateur (9) comprend au moins une languette de préhension (12).Tray (1) according to any one of claims 9 to 11, characterized in that the shutter (9) comprises at least one gripping tab (12). Barquette (1) selon l'une quelconque des revendications 9 à 12, caractérisée en ce que les moyens de rigidification (11) sont en carton kraft dont l'épaisseur est choisie pour présenter une rigidité suffisante pour une obturation étanche de la barquette (1) lorsque l'obturateur (9) est en position refermée.Tray (1) according to any one of claims 9 to 12, characterized in that the stiffening means (11) are kraft paperboard whose thickness is chosen to have sufficient rigidity for sealing the tray (1 ) when the shutter (9) is in the closed position. Barquette (1) selon la revendication 13, caractérisée en ce que les moyens de rigidification (11) sont solidarisés au film plastique (10) selon le pourtour de rigidification (110).Tray (1) according to claim 13, characterized in that the stiffening means (11) are secured to the plastic film (10) according to the stiffening perimeter (110). Barquette (1) selon la revendication 13, caractérisée en ce que les moyens de rigidification (11) sont sous la forme d'une plaque à deux excroissances (111, 112) opposées se raccordant à la partie centrale de plaque par des lignes de prédécoupe (113, 114), les moyens de rigidification (11) étant solidarisés au film plastique (10) selon les seules excroissances (111, 112) opposées, la partie centrale de plaque étant ainsi détachable du film plastique (10) et ayant une forme appropriée pour constituer l'obturateur (9).Tray (1) according to claim 13, characterized in that the stiffening means (11) are in the form of a plate with two opposite protrusions (111, 112) connecting to the central part of the plate by precut lines (113, 114), the stiffening means (11) being secured to the plastic film (10) according to the only protuberances (111, 112) opposite, the central plate portion being thus detachable from the plastic film (10) and having a shape suitable for constituting the shutter (9).
EP15154479.8A 2014-02-10 2015-02-10 Tray for food products with resealable lid Active EP2905240B8 (en)

Applications Claiming Priority (1)

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FR1451018A FR3017374B1 (en) 2014-02-10 2014-02-10 RETRACTABLE TRUNK TRAY

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EP2905240B1 EP2905240B1 (en) 2017-04-26
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US11254466B2 (en) 2018-08-21 2022-02-22 Intercontinental Great Brands Llc Food storage tray
USD964862S1 (en) 2018-08-21 2022-09-27 Intercontinental Great Brands Llc Tray

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FR3096972B1 (en) * 2019-06-06 2021-05-07 Groupe Guillin Sa Device for closing a pot intended to contain at least one product, packaging device comprising such a closing device and methods of manufacturing such a closing device and such a packaging device

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WO2019079735A1 (en) * 2017-10-21 2019-04-25 Zipporo LLC Sealable container system
US11254466B2 (en) 2018-08-21 2022-02-22 Intercontinental Great Brands Llc Food storage tray
USD964862S1 (en) 2018-08-21 2022-09-27 Intercontinental Great Brands Llc Tray
US11724855B2 (en) 2018-08-21 2023-08-15 Intercontinental Great Brands Llc Food storage tray

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FR3017374B1 (en) 2016-06-10
ES2634813T3 (en) 2017-09-29
EP2905240B1 (en) 2017-04-26
FR3017374A1 (en) 2015-08-14
EP2905240B8 (en) 2017-08-02

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