EP0427512B1 - Emballage, pour produits alimentaires, refermable et présentant une fermeture à encliquetage - Google Patents

Emballage, pour produits alimentaires, refermable et présentant une fermeture à encliquetage Download PDF

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Publication number
EP0427512B1
EP0427512B1 EP90312139A EP90312139A EP0427512B1 EP 0427512 B1 EP0427512 B1 EP 0427512B1 EP 90312139 A EP90312139 A EP 90312139A EP 90312139 A EP90312139 A EP 90312139A EP 0427512 B1 EP0427512 B1 EP 0427512B1
Authority
EP
European Patent Office
Prior art keywords
projection
peripheral flange
base member
body member
food packaging
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.)
Expired - Lifetime
Application number
EP90312139A
Other languages
German (de)
English (en)
Other versions
EP0427512A1 (fr
Inventor
Gerald O. Hustad
Paul E. Grindrod
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.)
Oscar Mayer Foods Corp
Original Assignee
Oscar Mayer Foods Corp
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Filing date
Publication date
Application filed by Oscar Mayer Foods Corp filed Critical Oscar Mayer Foods Corp
Publication of EP0427512A1 publication Critical patent/EP0427512A1/fr
Application granted granted Critical
Publication of EP0427512B1 publication Critical patent/EP0427512B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container 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
    • B65D77/2068—Means for reclosing the cover after its first opening
    • B65D77/2072—Mechanical means
    • B65D77/2076—Mechanical means provided by the cover itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • B65D75/32—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • B65D75/32—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents
    • B65D75/321—Both sheets being recessed
    • B65D75/322—Both sheets being recessed and forming one compartment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container 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
    • B65D77/2068—Means for reclosing the cover after its first opening
    • B65D77/2072—Mechanical means
    • B65D77/2076—Mechanical means provided by the cover itself
    • B65D77/208—Mechanical means provided by the cover itself the cover having a cap-like or plug-like shape

Definitions

  • the present invention generally relates to food packaging containers and method of forming the containers including locking members for snap locking together a base member thereof and a body member thereof.
  • the snap locking members include at least one mating snap closure assembly having a projection on one of the container members which enters into and snappingly engages an undersized opening in the other member of the packaging container.
  • the projection may be subjected to crimping after it has been thermoformed into the package member.
  • the projection and the undersized opening are formed in the respective peripheral flanges of the base member and body member and at a location that is spaced outwardly from a peelable hermetic seal of the food packaging container.
  • Food packaging containers of the type that include a semi-rigid and/or thermoformed base member and a body member having a bubble portion for defining a cavity that encloses a food product are well known.
  • Packaging containers of this type have long been used for merchandising packaged foods such as sliced luncheon meats, cheeses and the like.
  • the food product is hermetically sealed inside the cavity under vacuum packaging conditions in a manner well known in the art. At times, mechanical pressure may be used in order to generally shape or form the food to the package cavity.
  • EP-A-0367603 which forms part of the prior art under the provisions of Article 54(3) EPC, pertains to a recloseable package having a body member, a base, a hermetic seal between the body member and base and snap locking projections in the sidewalls of the body member and base.
  • EP-A-0222558 provides a recloseable food package of deformable, semi-rigid plastic material with indents, forming a locking means, formed into the package container body and closure member simultaneously after filling and sealing to ensure that both the body container and closure member snap together to close the package after opening.
  • a desired objective of many of these types of packaging containers is to provide a food packaging container that is resealable, at least to the extent that the base and body or bubble portion will be readily reclosed after the hermetic seal has been broken and the package has been opened, typically to remove a portion of the food product within the cavity.
  • Attempts in this regard have included the use of pressure sensitive adhesives which remain tacky through a number of openings and closings.
  • the present invention responds to a need in the art for food packaging containers which are easily openable and easily recloseable in a positive manner to the extent that the consumer is provided with an audible sound signifying that the package has been reclosed in order to provide at least a perception of freshness preservation.
  • the reclosing is easily accomplished without requiring close visual study or careful attention by the consumer.
  • This packaging thus provides the consumer with a clear signal that reclosure has been accomplished to ensure that the cavity will not be inadvertently opened and to provide a non-hermetic barrier for retarding deterioration of the food product within the cavity.
  • Another object of this invention is to provide an improved food packaging container and method of forming same, which container incorporates at least one flange area snap closure assembly that effects an audible snap when the food packaging container is reclosed.
  • Another object of the present invention is to provide an improved food packaging container and method of making same which provide a positive and clear signal to the consumer that the package has been reclosed.
  • Another object of this invention is to provide an improved food packaging container and method of making same, which container can be readily reclosed without requiring a great deal of time, skill or attention on the part of the consumer, which can be further facilitated by a hinge assembly.
  • Another object of the present invention is to provide an improved food packaging container and method of making same, which incorporates reclosure members that do not substantially increase the cost of the container and that are readily visible from the front of the container.
  • the present invention provides a food packaging container, comprising: a base member, having a panel portion for supporting a food product and a peripheral flange portion generally surrounding said base member panel portion; a body member having a bubble portion for cooperating with the base member panel portion to define a cavity to fully enclose the food product therewithin, said body member further including a peripheral flange portion generally surrounding said body member bubble portion; peelable sealing means to provide hermetic sealing of the base member peripheral flange portion to the body member peripheral flange portion after the food product is filled into the cavity, said peelable sealing means providing a perimeter that is generally closely spaced outside of said cavity; and locking means for snap locking said base member to said body member, said locking means including at least one closure assembly, said snap closure assembly including an insertion projection and an undersized opening, said projection having been thermoformed into one of said base member peripheral flange or said body member peripheral flange, said undersized opening being in the other of said body member peripheral flange or said base member peripheral flange, said projection and said under
  • the invention further provides a method for providing a food packaging container, said method comprising: thermoforming a base member having a panel portion for supporting a food product and a peripheral flange portion generally surrounding said base member panel portion, said thermoforming step including thermoforming an insertion projection into said peripheral flange portion of the base member; for cooperating with the base member panel portion to define a cavity to fully enclose the food product therewithin, said thermoforming step further including forming a peripheral flange portion surrounding said body member bubble portion; forming an undersized opening into said peripheral flange portion of the body member, said undersized opening having a periphery, at least a portion of which is smaller than a similarly positioned portion of said insertion projection of the base member; hermetically sealing together a portion of said base member peripheral flange and a portion of said body member peripheral flange to provide a peelable seal along a perimeter that is closely spaced outside of said cavity; and subsequently inserting said thermoformed projection into said undersized opening in order to snap lock said projection and opening together,
  • the food packaging container includes a base and a body which together define a bubble enclosure that provides a cavity within which the food product is tightly closed.
  • the food is hermetically sealed within the cavity by suitable by suitable peelable sealing means.
  • Peripheral flanges of the base and body are positioned outside of the cavity and peelable sealing means, and locking means for snap locking means for snap locking the peripheral flanges together are formed therewithin.
  • the locking means includes at least one closure assembly of a projection and an undersized opening positioned one on the base and the other on the body. The projection and opening are in registry with each other when the base and body are hermetically sealed to each other.
  • the projection is thermoformed into the package base or body, and it is of an adequate size to allow crimping thereof either before or after filling and sealing of the food packaging container. Post-thermoforming crimping of the projection causes or at least greatly enhances the audible snapping sound which is experienced when the base and body are pressed together.
  • the food packaging container generally designated as 11, which is shown in Figures 1, 2 and 3 includes a base member, generally designated as 12, and a body member, generally designated as 13.
  • Body member 13 includes a bubble portion 14, and food product such as a stack of luncheon meat or cheese slices or the like (not shown), is tightly enclosed by and between the bubble portion 14 and a panel portion 15 of the base member 12.
  • the panel portion 15 takes the form of a pedestal which generally nests within the mouth opening of the bubble portion 14.
  • a peelable seal 16 is provided, typically in close proximity to the bubble portion 14, and this peelable seal 16 can be of a generally known construction and/or character so that a vacuum seal condition is maintained within the food packaging container 11 until opening thereof is effected.
  • the peelable seal 16 will be generally along or spaced closely from the inside perimeter of a peripheral flange 17 of the base member 12 and a peripheral flange 18 of the body member 13.
  • At least one snap closure assembly (two snap closure assemblies being visible in Figure 1) is provided in the peripheral flanges 17 and 18.
  • the projection of each snap closure assembly is formed in the base member 12, or the body member 13 and the other undersized opening is formed in the other member.
  • One illustrated snap closure assembly includes base member projection 21 and an undersized opening 22 in the body member.
  • the other illustrated snap closure assembly consists of base member projection 23 and body member undersized opening 24.
  • the base member projections 21, 23 are insertion projections
  • the body member undersized openings 22, 24 are receptor openings that are generally hollow and closely receive the insertion projections which are generally protruding above the surface of the base member.
  • Openings 22, 24 are undersized in that each has an opening peripheral size and/or shape so as to effect an interference fit when the base member projection enters the opening.
  • the entry and/or seating of the projection into the opening is accompanied by an audible snap as projection is thus force fitted into the opening.
  • the opening perimeter will be less than the outer perimeter of the projection cross-section, resulting in an audible snap.
  • at least an engagement portion of the projection has a cross-sectional shape different from the shape of the opening perimeter, at least a part of the opening will be in interfering engagement with the projection whereby the interfering portions will signal an audible snap when the package is closed.
  • the extent of undersizing must be adequate to achieve the needed force fit, but it should not be so great as to cause the opening or the projection to distort or tear.
  • the base member 12 and the body member 13 are formed of a semi-rigid, pre-formed plastic material, and the projections 21 and 23 are thermoformed therewithin and at a location at least 1/8 inch away [3.2 mm] from the cavity area and outside of the peelable seal 16.
  • Each projection has a height which is adequate (typically 1/16 inch [1.6 mm] or more, typically on the order of approximately 1/8 inch [3.2 mm] or more) in order to allow for crimping of the projection either before or after filling and sealing of the food packaging container 11. It is preferred that the crimping action be post-thermoforming and before or after the base member 12 and body member 13 are pressed together.
  • the post-thermoforming crimping of the projections can enhance the audible snap which sounds when the body and base are pressed together.
  • the openings can be easily made after thermoforming, for example during a panel cut-out or trimming step.
  • the projection and opening of this embodiment exhibit a general bowtie shape and provide a relatively large engagement interface and a shape that facilitates crimping the projection, when desired. It can be especially convenient to crimp neck portion 25 of a projection in order to provide especially suitable snap locking means having a reliable audible snap.
  • a hinge assembly 27 can include a permanent-type of glue or adhesive or heat seal 28 for joining respective ends of the base member 12 and body member 13 which are generally opposite from the snap closure assembly.
  • a score line 29 is also preferably included in order to facilitate bending of the semi-rigid base member 12 and/or body member 13.
  • the food packaging container generally designated as 31 in Figure 4, includes base member 32 and a body member 33 having a bubble portion 34.
  • base member projection 35 and body member undersized opening 36 are not entirely identical in shape, and at least one engagement portion of the projection is slightly wider than the opening in at least one location and/or dimension.
  • portions of the insertion projection 35 are slightly wider than the generally corresponding portions of the undersized opening 36.
  • the base member projection 35 enters the undersized opening 36 in the body member 33. Totally non-impeded entry is not possible due to the positioning of protruding wings 37 of the undersized opening 36, while corresponding wings are not included in the base member projection 35.
  • FIG. 6 embodiment illustrates another general form which can be taken by a food packaging container, generally designated as 41.
  • a food packaging container generally designated as 41.
  • This package provides a substantial hinge arrangement by including a hinge portion 42 joining body members 43 and 44 of generally equal volume.
  • Snap closure assemblies 45 and 46 are illustrated.
  • these snap closure assemblies can include post thermoforming crimping of the projection and/or can exhibit a pinching action structure. In any event they are characterized by a close interference fit.
  • each snap closure assembly may be either within the base member or body member, and the corresponding receptor undersized opening component thereof will be within the other member, whether the body member or the base member.
  • a minimum of one such snap closure assembly or as many as six or more such assemblies may be provided in order to achieve the desired reclosable locking action.
  • the projections and undersized openings may take on any number of various shapes. Typically these shapes will readily allow for the interference fit, and/or crimping and/or for pinching action as desired.
  • Figure 7a shows a snap closure assembly structure design modeled after a padlock.
  • Figure 7b gives a structure on the order of that shown in the other embodiments, but also resembling a key providing the general outline of initials such as the illustrated "OM”.
  • Figure 7c provides another illustration of a multi-faceted shape which approximates that of the initials "OM”.
  • Figure 7d illustrates another shape of projection and undersized opening.
  • U.S. Patents No. 3,498,018, No. 4,411,122, No. 4,577,757 and No. 4,688,369 which are incorporated by reference hereinto, describe methods of forming a vacuumized, hermetically sealed package characterized by a predetermined quantity of product which is deformable and is arranged in the form of an upright mass on a pedestal having a sidewall and a peripheral flange for hermetic sealing to a corresponding peripheral flange of the body member.
  • the food product will engage the end panel of the body member bubble, as well as its sidewall.
  • the sidewall of the base panel pedestal telescopes into the bottom edges of the bubble sidewall.
  • the body member is placed in an inverted position, such as generally illustrated in Figure 1 hereof, and sufficient quantity of product is placed thereinto so that the cavity will be substantially filled when the package is assembled.
  • the base member is positioned on the mouth of the bubble so that the pedestal telescopes into the bubble and engages the product.
  • the flange margins of the base member overlie the corresponding margins of the body member. Mechanical pressure can be applied inwardly and onto the outside surface of the pedestal.
  • the area defined by the bottom edges of the bubble sidewall can be sufficient to force the product into close contact with interior surfaces of the base and body members to shape the product to conform to the shape of the cavity and substantially completely fill the space between the cavity and product while vacuumizing the assembly and while sealing the package in a hermetic manner.
  • the projection or projections are formed in the desired peripheral flange, preferably by thermoforming. While crimping can be accomplished before or after filling and sealing of the package, it is preferred to crimp before the base member and body member are assembled together. An audible snap is enhanced by post-thermoforming crimping of neck portions or the like of the projection or projections.
  • reclosability and the ability of the package to then stay closed is achieved at low cost by providing one or more points of frictional interaction outside of the sealed area of the package.
  • An audible snap sound is also provided which enhances the perception of freshness preservation once the package is opened.
  • This invention can be applied to packages of any of various shapes, including those that are generally round and generally square or rectangular, and the bubble portions can take on needed product-conforming shapes. Also, the projection or projections are readily visible to the consumer, even from the front of the package, and they can present a pleasing appearance.
  • high molecular weight polymer adhesives which are peelable and resealable may be used, or easy peel multi-layer rigid films that are heat sealable may be used.
  • crimping of the projection or projections occurs by applying pressure to one or both sides of, the projection (or a portion of it such as the illustrated neck) in order to slightly deform it. Crimping might occur at room temperature, or heat may be applied to the surface of the crimped area and/or imparted thereto by the crimping device itself, in order to utilize solid state forming techniques in order to utilize solid state forming techniques.
  • the thickness of the bubble film is about 13 mil. [0.33 mm] and the thickness of the base film is about 10 mil. [0.25 mm].
  • Exemplary bubble compositions include Barex 210 or polyethylene terephthalate.
  • a suitable base composition can be Barex 210, polyvinyl chloride, or Saranex laminated to Barex 210 or polyvinyl chloride or polystyrene.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Packages (AREA)
  • Closures For Containers (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)

Claims (15)

  1. Conteneur d'emballage pour produits alimentaires (11 ; 31 ; 41), comprenant :
       un élément de base ( 12 ; 32 ; 43), muni d'une portion de panneau (15) destinée à soutenir un produit alimentaire et une portion de collerette périphérique (17) entourant généralement ladite portion du panneau de l'élément de base ;
       un élément du corps ( 13 ; 33 ; 44) présentant une portion thermoformée (14 ; 34) pour s'associer avec la portion du panneau de l'élément de base (15) afin de définir une cavité pour enfermer complètement le produit alimentaire à l'intérieur, ledit élément du corps comportant en outre une portion de collerette périphérique (18) entourant généralement ladite portion thermoformée de l'élément du corps ;
       un moyen d'étanchéité pelable (16) pour fournir une fermeture hermétique de la portion de collerette périphérique de l'élément du corps (18) une fois que la cavité a été remplie par le produit alimentaire, ledit moyen d'étanchéité pelable (16) assurant un périmètre qui est généralement rapproché à l'extérieur de ladite cavité ; et
       un moyen de fermeture pour fermer par encliquetage ledit élément de base avec ledit élément du corps, ledit moyen de fermeture comprenant au moins un ensemble de cliquets (21, 22 ou 23, 24 ; 35, 36 ; 45 ou 46), ladite fermeture à encliquetage comportant une projection d' insertion (21, 23 ; 35) et une ouverture plus petite (22, 24 ; 36), ladite projection (21, 23 ; 35) ayant été thermoformée dans l'une des collerettes périphériques de l'élément de base ou dans ladite collerette périphérique de l'élément du corps, ladite ouverture plus petite (22, 24 ; 36) étant dans l'autre collerette périphérique de l'élément du corps ou dans ladite collerette périphérique de l'élément de base, ladite projection et ladite ouverture plus petite correspondant l'une avec l'autre en un emplacement situé à l'extérieur dudit moyen d'étanchéité pelable (16), et ladite ouverture plus petite (22, 24 ; 36) recoit et s'engage dans le joint à ajustement serré à encliquetage avec ladite projection d'insertion (21, 23 ; 35), ledit enclequitage étant tel qu'il génère un bruit d'encliquetage audible au moment de l'insertion de ladite projection d'insertion dans ladite ouverture plus petite.
  2. Conteneur d'emballage pour produits alimentaires selon la revendication 1, comprenant en outre un moyen de charnière (27 ; 42) joignant ladite collerette périphérique de la portion de base et ladite collerette périphérique de la portion du corps en les faisant pivoter.
  3. Conteneur d'emballage pour produite alimentaires selon la revendication 2, où ledit moyen de charnière (27 ; 42) est prévu en un emplacement généralement opposé à l'emplacement dudit moyen d'encliquetage.
  4. Conteneur d'emballage pour produits alimentaires selon l'une quelconque des revendications 1 à 3, où ladite projection d'insertion (21, 23 ; 35) comporte une portion ondulée.
  5. Conteneur d'emballage pour produits alimentaires selon l'une quelconque des revendications 1 à 4, où ladite projection a une portion du rebord ondulée.
  6. Conteneur d'emballage pour produits alimentaires selon l'une quelconque des revendications 1 à 5, où ladite projection (21, 23) a une forme générale de noeud papillon comprenant une portion du rebord central ondulée (25).
  7. Conteneur d'emballage pour produits alimentaires selon l'une quelconque des revendications 1 à 6, où ladite portion du panneau de l'élément de base (15) est un appui en saillie présentant une paroi en forme d'anneau qui se niche à l'intérieur de ladite portion thermoformée de l'élément du corps.
  8. Conteneur d'emballage pour produits alimentaires selon l'une quelconque des revendications 1 à 7, où une desdites projections (21, 23 ; 35) ou ouvertures plus petites (22, 24 ; 36) a une portion en forme d'aile en saillie (37 qui se déforme pour assurer une action de fixation par pincement lorsque ledit ensemble d'encliquetage est joint ensemble.
  9. Conteneur d'emballage pour produite alimentaires selon l'une quelconque des revendications 1 à 8, où ladite ouverture plus petite (26) comprend une partie en saillie (37) qui se déforme au moment de s'engager en glissant avec une portion de la paroi (38) de ladite projection d'insertion.
  10. Procédé de fabrication d'un conteneur d'emballage pour produits alimentaires (11 ; 31 ; 41), ledit procédé comprenant les étapes suivantes :
       thermoformer un élément de base (12 ; 32 ; 43) présentant une portion de panneau (15) pour soutenir un produit alimentaire et une portion de collerette périphérique (17) entourant généralement ladite portion du panneau de l'élément de base, ladite étape de thermoformage comprenant le thermoformage d'une projection d'insertion (21, 23 ; 35 ; 45 ou 46) dans ladite portion de collerette périphérique de l'élément de base ;
       thermoformer un élément du corps (13 ; 33 ; 44) présentant une portion thermoformée (14 ; 34) pour coopérer avec la portion du panneau de l'élément de base (15) afin de définir une cavité pour enfermer complètement le produit alimentaire à l'intérieur, ladite étape de thermoformage comprenant en outre la formation d'une portion de collerette périphérique (18) entourant ladite portion thermoformée de l'élément du corps ;
       former une ouverture plus petite (22, 24 ; 36 ; 45 ou 46) dans ladite portion de collerette périphérique (18) de l'élément du corps, ladite ouverture plus petite présentant une périphérie dont au moins une portion est plus petite qu'une portion positionnée de la même manière que ladite projection d'insertion (21, 23 ; 35 ; 45 ou 46) de l'élément de base ;
       fermer ensemble hermétiquement une portion de ladite collerette périphérique de l'élément de base (17) et une portion de ladite collerette périphérique de l'élément du corps (18) pour assurer un moyen de fermeture pelable (16) le long d'un périmètre qui est rapproché à l'extérieur de ladite cavité ; et ensuite
       insérer ladite projection thermoformée (21, 23 ; 35 ; 45 ou 46) dans ladite ouverture plus petite (22, 24 ; 36 ; 45 ou 46) afin de fermer ensemble par enclequitage ladite projection et l'ouverture, de ce fait un bruit d'encliquetage audible est produit au moment de fermer ensemble par encliquetage ladite projection et l'ouverture.
  11. Procédé selon la revendication 10, comprenant en outre l'ondulation d'au moins une portion de ladite projection thermoformée afin de former une portion ondulée de celle-ci
  12. Procédé selon la revendication 11, où ladite étape d'ondulation a lieu avant ladite étape d'insertion.
  13. Procédé selon l'une quelconque des revendications 10 à 12, où ladite étape de formation de l'ouverture plus petite comprend la formation d'une portion en saillie de ladite ouverture plus petite.
  14. Procédé selon l'une quelconque des revendications 10 à 13, comprenant en outre les extrémités respectives desdites portions de collerette périphérique attachées ensemble par l'intermédiaire d'une charnière.
  15. Procédé selon l'une quelconque des revendications 10 à 14, où ladite étape de fermeture hermétique est précédée du remplissage de ladite cavité par un produit alimentaire.
EP90312139A 1989-11-09 1990-11-06 Emballage, pour produits alimentaires, refermable et présentant une fermeture à encliquetage Expired - Lifetime EP0427512B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43492189A 1989-11-09 1989-11-09
US434921 1989-11-09

Publications (2)

Publication Number Publication Date
EP0427512A1 EP0427512A1 (fr) 1991-05-15
EP0427512B1 true EP0427512B1 (fr) 1994-10-12

Family

ID=23726240

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Application Number Title Priority Date Filing Date
EP90312139A Expired - Lifetime EP0427512B1 (fr) 1989-11-09 1990-11-06 Emballage, pour produits alimentaires, refermable et présentant une fermeture à encliquetage

Country Status (5)

Country Link
EP (1) EP0427512B1 (fr)
JP (1) JPH03226463A (fr)
AT (1) ATE112744T1 (fr)
CA (1) CA2027709A1 (fr)
DE (1) DE69013291D1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19859042A1 (de) * 1998-12-21 2000-06-29 Convenience Food Sys Bv Wiederverschließbare Kunststoffverpackung mit mindestens einer Noppe
DE19859043A1 (de) 1998-12-21 2000-06-29 Convenience Food Sys Bv Wiederverschließbare Kunststoffverpackung mit einem Klettverschluß
DE10120366A1 (de) 2001-04-25 2002-10-31 Convenience Food Sys Wallau Kunststoffverpackung mit mindestens einer versiegelten Noppe
DE102005033273A1 (de) † 2005-07-15 2007-01-25 Multivac Sepp Haggenmüller Gmbh & Co. Kg Verpackung aus Bahnmaterial und Verfahren zu deren Herstellung
US9232808B2 (en) 2007-06-29 2016-01-12 Kraft Foods Group Brands Llc Processed cheese without emulsifying salts
NZ591354A (en) 2010-02-26 2012-09-28 Kraft Foods Global Brands Llc A low-tack, UV-cured pressure sensitive acrylic ester based adhesive for reclosable packaging
MX2012009796A (es) 2010-02-26 2012-09-12 Kraft Foods Global Brands Llc Envase teniendo un sujetador susceptible de volver a cerrarse a base de adhesivo y metodos para el mismo.
RU202835U1 (ru) * 2020-08-13 2021-03-10 Общество с ограниченной ответственностью "ПАКГРАД" Лоток для пищевых продуктов

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0222558A2 (fr) * 1985-11-01 1987-05-20 Oscar Mayer Foods Corporation Procédé de formage d'un emballage refermable
EP0367603A2 (fr) * 1988-11-03 1990-05-09 Oscar Mayer Foods Corporation Emballage pour aliments comprenant des moyens de fermeture

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3311229A (en) * 1965-01-21 1967-03-28 Nat Patent Dev Corp Tablet package
US4498588A (en) * 1984-05-03 1985-02-12 Champion International Corporation Reclosable packaging system and method for forming same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0222558A2 (fr) * 1985-11-01 1987-05-20 Oscar Mayer Foods Corporation Procédé de formage d'un emballage refermable
EP0367603A2 (fr) * 1988-11-03 1990-05-09 Oscar Mayer Foods Corporation Emballage pour aliments comprenant des moyens de fermeture

Also Published As

Publication number Publication date
ATE112744T1 (de) 1994-10-15
EP0427512A1 (fr) 1991-05-15
CA2027709A1 (fr) 1991-05-10
JPH03226463A (ja) 1991-10-07
DE69013291D1 (de) 1994-11-17

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