EP0427512A1 - 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
EP0427512A1
EP0427512A1 EP90312139A EP90312139A EP0427512A1 EP 0427512 A1 EP0427512 A1 EP 0427512A1 EP 90312139 A EP90312139 A EP 90312139A EP 90312139 A EP90312139 A EP 90312139A EP 0427512 A1 EP0427512 A1 EP 0427512A1
Authority
EP
European Patent Office
Prior art keywords
peripheral flange
projection
base member
food packaging
packaging container
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
EP90312139A
Other languages
German (de)
English (en)
Other versions
EP0427512B1 (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
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 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.
  • 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.
  • 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 reclosable 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.
  • 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 enclosed.
  • the food is hermetically sealed within the cavity 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 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.
  • 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 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 1116 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)
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 true EP0427512A1 (fr) 1991-05-15
EP0427512B1 EP0427512B1 (fr) 1994-10-12

Family

ID=23726240

Family Applications (1)

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)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19859043A1 (de) * 1998-12-21 2000-06-29 Convenience Food Sys Bv Wiederverschließbare Kunststoffverpackung mit einem Klettverschluß
WO2000037335A1 (fr) 1998-12-21 2000-06-29 Convenience Food Systems B.V. Emballage plastique refermable dote d'au moins une nope
WO2002087992A1 (fr) 2001-04-25 2002-11-07 Convenience Food Systems Wallau Gmbh & Co. Kg Emballage plastique comportant au moins un bouton scelle
US8763890B2 (en) 2010-02-26 2014-07-01 Intercontinental Great Brands Llc Package having an adhesive-based reclosable fastener and methods therefor
EP1743847B2 (fr) † 2005-07-15 2014-10-22 Multivac Sepp Haggenmüller GmbH & Co. KG Emballage en feuille et procédé de fabrication
US9382461B2 (en) 2010-02-26 2016-07-05 Intercontinental Great Brands Llc Low-tack, UV-cured pressure sensitive adhesive suitable for reclosable packages
US9532584B2 (en) 2007-06-29 2017-01-03 Kraft Foods Group Brands Llc Processed cheese without emulsifying salts
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
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0222558A3 (fr) * 1985-11-01 1988-09-07 Oscar Mayer Foods Corporation Procédé de formage d'un emballage refermable
US4945710A (en) * 1988-11-03 1990-08-07 Oscar Mayer Foods Corporation Method of forming a reclosable package

Patent Citations (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

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6691886B1 (en) 1998-12-21 2004-02-17 Convenience Food Systems B.V. Resealable plastic packaging container with hook and loop closure
WO2000037334A1 (fr) 1998-12-21 2000-06-29 Convenience Food Systems B.V. Emballage plastique refermable dote d'une fermeture auto-agrippante
WO2000037335A1 (fr) 1998-12-21 2000-06-29 Convenience Food Systems B.V. Emballage plastique refermable dote d'au moins une nope
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
EP1140654B1 (fr) * 1998-12-21 2003-04-02 CFS GmbH Kempten Emballage plastique refermable dote d'une fermeture auto-agrippante
WO2002087992A1 (fr) 2001-04-25 2002-11-07 Convenience Food Systems Wallau Gmbh & Co. Kg Emballage plastique comportant au moins un bouton scelle
US7322473B2 (en) 2001-04-25 2008-01-29 Convenience Food Systems Wallau Gmbh & Co. Kg Plastic packaging with at least one welded knob
EP1743847B2 (fr) † 2005-07-15 2014-10-22 Multivac Sepp Haggenmüller GmbH & Co. KG Emballage en feuille et procédé de fabrication
US9532584B2 (en) 2007-06-29 2017-01-03 Kraft Foods Group Brands Llc Processed cheese without emulsifying salts
US9382461B2 (en) 2010-02-26 2016-07-05 Intercontinental Great Brands Llc Low-tack, UV-cured pressure sensitive adhesive suitable for reclosable packages
US8763890B2 (en) 2010-02-26 2014-07-01 Intercontinental Great Brands Llc Package having an adhesive-based reclosable fastener and methods therefor
US10287077B2 (en) 2010-02-26 2019-05-14 Intercontinental Great Brands Llc Low-tack, UV-cured pressure sensitive adhesive suitable for reclosable packages
RU202835U1 (ru) * 2020-08-13 2021-03-10 Общество с ограниченной ответственностью "ПАКГРАД" Лоток для пищевых продуктов

Also Published As

Publication number Publication date
JPH03226463A (ja) 1991-10-07
CA2027709A1 (fr) 1991-05-10
EP0427512B1 (fr) 1994-10-12
ATE112744T1 (de) 1994-10-15
DE69013291D1 (de) 1994-11-17

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