EP0443867A1 - Emballage refermable avec moyens pour indiquer l'ouverture non-autorisée - Google Patents

Emballage refermable avec moyens pour indiquer l'ouverture non-autorisée Download PDF

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Publication number
EP0443867A1
EP0443867A1 EP91301423A EP91301423A EP0443867A1 EP 0443867 A1 EP0443867 A1 EP 0443867A1 EP 91301423 A EP91301423 A EP 91301423A EP 91301423 A EP91301423 A EP 91301423A EP 0443867 A1 EP0443867 A1 EP 0443867A1
Authority
EP
European Patent Office
Prior art keywords
package
web
seal
recloseable
opposing
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.)
Withdrawn
Application number
EP91301423A
Other languages
German (de)
English (en)
Inventor
Todd Steven Marnocha
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 EP0443867A1 publication Critical patent/EP0443867A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2516—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener
    • B65D33/2525—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener located between the fastener and the product compartment

Definitions

  • the present invention relates generally to recloseable packages for hermetically sealing consumable products between generally opposing package side panels, and more particularly to recloseable packages for food products and the like having a peelable seal which secures together a product access edge of the package and which has a tamper-evident feature indicating prior opening of the package.
  • Flexible packages which have an inner, hermetic peelable seal and an outer zipper seal are presently known for packaging various food products, such as wieners, bacon, sliced luncheon meats, chops, cheese and the like.
  • a common use of such packaging is to vacuum seal the food produce between two sheets of film material to form a generally rectangularly shaped package which is hermetically sealed (e.g., heat sealed) with a single, non-recloseable seal about three sides and which has an access opening at the fourth side which includes both a hermetic, non-recloseable seal and a reclosure seal.
  • the access opening consists of an outer zipper reclosure seal and an inner, non-recloseable, peel seal
  • the package may be opened and then reclosed without showing outwardly visible evidence of such openings.
  • a package which has been opened and thereafter reclosed, but from which no contents have been removed would have an outward appearance comparable to a package which retains its inner, hermetic peel seal.
  • a consumer who purchases and thereafter opens a previously-opened package would, of course, especially for vacuum-packed products, be able to determine that the hermetic seal has been broken. Determining that a gas-flushed package had been previously opened might possibly be more difficult. It would, however, be preferred that it be readily apparent to the consumer in the store (i.e., before purchase) that the package had been previously opened.
  • Packages constructed in accordance with the principles of the present invention are tamper evident so that it is apparent to the consumer that the package has been opened upon casual examination of the package. Due to the hermetic peel seal, the package is liquid tight and suitably retains with the package, fluids of products contained therein, including water, juices, oils and the like.
  • the package has a first, recloseable seal which can be opened and closed repeatedly in order to remove portions of the package contents.
  • a "zipper" seal consisting of interengaging rib and groove fastener elements is the preferred recloseable seal means.
  • the package has a second, hermetic inner seal which is an easy-open or peel seal.
  • the peel seal is generally parallel to the recloseable seal and is opened with digital pull-apart forces which may be a continuation of the forces used to open the recloseable seal.
  • the peel seal can maintain a vacuum, pressurized and/or a modified gaseous environment within the flexible package.
  • the peel seal will be formed by effecting a face-to-face seal between two plys of plastic film with the strength of the seal permitting separation without destruction or tearing of either ply.
  • the package of this invention further includes a tamper-evident feature which is disposed in the package neck area between the recloseable seal and the hermetic peel seal which must be disrupted in order to gain access to the product.
  • the disruption of the tamper-evident feature will provide visible evidence of the fact that entry to the contents of the bag, through the reclosure seal and the inner peel seal, may have occurred.
  • the present invention is directed to an improved recloseable package which provides readily discernible evidence of tampering.
  • evidence of tampering or prior opening of the package is accomplished by way of a flexible web which extends between the rib and groove fastener elements of a recloseable seal and which must be broken to reach the peel seal.
  • the recloseable package has a first, recloseable seal assembly disposed near the access edge of the package and has a second, peelable hermetic seal disposed beneath the recloseable seal and near the product contained in the package.
  • the recloseable seal assembly includes a web extending between the two opposing sidewalls, which web contains an area of frangibility.
  • Another object of the present invention is to provide a recloseable package for food products having a recloseable seal disposed near an opening of the package, a peelable hermetic seal disposed near the food product and a tamper-evident strip which extends beneath the recloseable seal and above the peel seal and which strip indicates tampering with the peel seal.
  • Yet another object of the present invention is to provide an improved product package that incorporates a first, recloseable seal having integral tamper-evident characteristics in combination with a second hermetic peelable seal without incurring any, or only minimal, cost upcharge.
  • Still another object of the present invention is to provide a flexible food product package which has a recloseable seal and a peelable hermetic seal disposed parallel to each other proximate to an access edge of the food product package, the package having a frangible web extending between two opposing package sidewalls proximate to the recloseable seal, the frangible web having a central fold line so that, when folded upon itself, the web extends beneath the recloseable seal.
  • FIG. 1 illustrates a first embodiment of a tamper-evident recloseable package 10 constructed in accordance with the principles of the present invention.
  • the packages 10 of the present invention are particularly suitable for sealing a food product, shown in the drawings as wieners 12, between two sheets or panels 14, 16 of flexible film material.
  • the package panels 14, 16 forming the packages according to the present invention can be made from a variety of materials including plastic films, multi-layered laminates or co-extrusions, thermoformable materials and the like.
  • a preferred plastic film for assembly of the packages of the present invention is one which is impervious to air, oxygen or moisture.
  • each package panel will be shown as a single heat-sealable lamina.
  • each bag panel will likely be a laminate of two or more layers which will provide sufficient protection to the product (e.g., oxygen and moisture barriers) and which can form a peelable, hermetic seal at their inner surfaces.
  • a surface of "Saran" a vinylidene chloride-vinyl chloride copolymer, in contact with a surface of ethylene vinyl acetate can form such bonds.
  • the basic package 10 is formed by positioning the two film sheets in an opposing, abutting relationship and securing the film sheets 14, 16 on three sides by non-peelable seals 18 along the periphery or permiter 20 of the package 10.
  • a package mouth or access area 22 is defined.
  • the peripheral sealing can be accomplished by processes well known by the art such as heat sealing or adhesive sealing.
  • the package also has a first, recloseable seal 24 illustrated as a conventional interengaging fastener assembly 26 such as a rib and groove fastener assembly.
  • the interengaging fastener assembly 26 includes a length of a formed rib element strip 28 disposed proximate and generally parallel to the package mouth 22 on a face 30 of an interior package sidewall 32.
  • the rib 50 projects outwardly from the rib element strip 28 a sufficient distance to be securely interengaged with and held by its confronting and complementary groove element strip 29.
  • the separate, formed groove element strip 29 is disposed opposite the rib element strip 28 on the confronting face 31 of the opposing package sidewall 33.
  • the groove element strip 29 includes two outwardly extending walls 52 which define a channel or groove 54 therebetween.
  • the groove 54 is or sufficient width to firmly engage the rib 50 when the confronting interengaging fastener strips 28, 29 are pressed together.
  • the interengaging fastener element strips 28, 29 are disposed a sufficent distance beneath the package mouth 22 to provide two opposing pull flanges 60, 61 on the opposing package sidewalls 32, 33.
  • the extending profiles of the interengaging fastener element strips 28, 29 aid in gripping the pull flanges 60, 61 when opening the package 10.
  • Both the recloseable seal 24 and the interengaging fastener assembly 26 can take any number of various characteristics and configurations in addition to those described herein.
  • a peelable seal area 36 is provided proximate to the food product 12 and generally parallel to the recloseable seal 24.
  • the peel seal area 36 may be formed by impressing the opposing package sidewalls 32, 33 with a heat seal bar (not shown) to thereby form a peelable seal 37 which is opened by digital forces between the package front panel 14 and the package rear panel 16.
  • the peel seal area 36 can also be formed by application of an adhesive to secure the package panels together.
  • a separate, frangible web 38 of package film which connects the interengaging fastener elements 28, 29 together to form a fastener-web assembly 39.
  • the frangible web 38 has a preferred predetermined maximum extended width, W, which is less than the distance, L, between the top of the peel seal 37 and the interengaging fastener elements 28, 29 such that the web must be broken before the peel seal can be reached and/or is opened.
  • W maximum extended width
  • the maximum extended width, W, of the web can be somewhat greater than L, but less than twice the distance L to achieve the benefits of the present invention.
  • the web 38 is provided with severance means, in the form of a frangible portion 44 of the web, illustrated as a line of weakening 40, which may take the form of a score line, perforations and the like, disposed in the general central portion 42 of the web 38 and generally parallel to the interengaging fastener elements 28, 29.
  • the line of weakening 40 extends for the length of the frangible web 38 and defines two web portions 46, 47 when the web 38 is separated.
  • the line of weakening 40 may be positioned somewhat offset from the center of the web 38 so that it can be more readily be determined from the exterior that the package 10 had been opened. Once the package walls have been pulled far enough apart to break the web 38 along the line of weakening 40, because the separated web portions 46, 47 remain attached to the package sidewalls even upon complete opening, there is no waste to discard when the package 10 is opened.
  • the frangible web line of weakening 40 may also serve as a fold line extending within the web central portion 42 so that when the web 38 is folded upon itself along the line of weakening, the frangible portion 44 (and the web itself) depends downwardly beneath the recloseable seal 24, when the package 10 is sealed. Because the frangible web 38 is located entirely between the peel seal 36 and the recloseable seal 24, it will be appreciated that the tamper evident feature or the present invention requires no additional space on the package 10, particularly because it is completely interior of and does not extend beyond the recloseable seal 24.
  • the web 38 is illustrated as a separate film member 49 which is adhered to the confronting faces 30, 31 of the package opposing sidewalls 32, 33 at the mouth 22 of the package 10.
  • the recloseable interengaging fastener element strips 28, 29 are then adhered to the opposing ends 51, 53 of a common face 48 of the web 38.
  • the adherence together of both the web 38 and the recloseable seal interengaging fastener elements 28, 29 may be accomplished by any suitable means, such as heat sealing or by adhesive.
  • the frangible web 38 can be easily added to a package having a recloseable seal with minimal packaging machine and/or material modifications.
  • FIGS. 5-6 Another embodiment of a recloseable, tamper-evident food product package 70 incorporating the principles of the present invention is shown in FIGS. 5-6.
  • the basic structure of this second embodiment, such as the recloseable seal interengaging fastener elements 72, 73 and the peel seal 74 is the same as that described for the first embodiment.
  • the package 70 utilizes a one-piece, integral fastener-web assembly 76 wherein the opposed interengaging fastener elements 72, 73, illustrated as rib and groove elements, are formed integral with the frangible web 78.
  • the interengaging fastener elements 72, 73 will be formed on the web 78 as it is extruded or otherwise manufactured.
  • the fastener-web assembly 76 is also provided with severance means, in the form of a frangible portion 80 of the web 78, illustrated as a line of weakening 82, which may take the form of a score line, perforations and the like, disposed in the general central portion 84 of the web 78 and extending therein generally parallel to the interengaging fastener elements 72, 73.
  • severance means in the form of a frangible portion 80 of the web 78, illustrated as a line of weakening 82, which may take the form of a score line, perforations and the like, disposed in the general central portion 84 of the web 78 and extending therein generally parallel to the interengaging fastener elements 72, 73.
  • the user grips the two pull flanges 60, 61 at the top of the package 10 and applies digital pull apart forces thereto.
  • the recloseable interengaging fastener elements 28, 29 will separate and will pull the frangible web 38 up from its downwardly depending general v-shape to an extended shape. (See FIGS. 3 & 6). Further exertion or digital forces will separate the web 38 along its line of weakening 40, thereby allowing access to the peel seal 36, which then may be opened by the user upon application of additional digital forces. Therefore, the only way in which access is gained into the package 10 is by breaking the line of weakening 40.
  • the frangible web 38 provides a tamper evident device for the package 10.
  • the frangible web 38 is unbroken and located below or interior of the recloseable seal 24.
  • the recloseable seal 24 has been opened to a sufficient extent to allow acces to the peel seal 37, it will be apparent that access has been gained or attempted to be gained into the package. Therefore, an inspection as to whether there has been tampering with the package 10 or the peel seal 37 can be easily done.
  • closing of the package for storage of the enclosed products 12 is accomplished by reclosing the interengaging fastener elements 28, 29.
  • the inwardly directed orientation of the web portions 46, 47 reduces any possibility that they will interfere with closure of the fastener elements 28, 29.
  • the packages of the present invention can be formed in a variety of ways.
  • the package 10 may be formed from two, separate package panels 14, 16 in which three sides thereof are initially appropriately sealed to define the outer limits of the package 10 or the package 10 may be formed from a continuous sheet of package film which is folded upon itself to define the bottom edge of the package, whereupon the side edges of the package may be appropriately sealed at predetermined intervals to define individual packages.
  • the package mouth structure is completed.
  • the multi-part fastener web assembly 35 or the one piece web assembly 76 may then be attached to the package mouth confronting faces 30, 31 in any conventional manner such as by heat sealing or adhesive.
  • the web Prior to attachment, the web is scored or perforated to define its line of weakening 40, and the web is folded upon itself such that the central portion 42 of the frangible web 38 depends beneath the recloseable seal 24.
  • the package 10 may be filled with its products 12 either prior to or after completion of the package mouth.
  • the peel seal 37 will be closed after filling the package with the product 12, and the fastener-web assembly 35 is subsequently attached to the upper opposing sidewalls 32, 33.
  • the package 10 may be filled with its intended product 12 through an open side or an open bottom of the package after the formation of the package mouth has been accomplished. In such cases, it is evident that the fastener-web assembly 35 will be attached to the package opposing sidewalls 32, 33 prior to filling of the package.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
EP91301423A 1990-02-22 1991-02-22 Emballage refermable avec moyens pour indiquer l'ouverture non-autorisée Withdrawn EP0443867A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48391690A 1990-02-22 1990-02-22
US483916 1990-02-22

Publications (1)

Publication Number Publication Date
EP0443867A1 true EP0443867A1 (fr) 1991-08-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91301423A Withdrawn EP0443867A1 (fr) 1990-02-22 1991-02-22 Emballage refermable avec moyens pour indiquer l'ouverture non-autorisée

Country Status (3)

Country Link
EP (1) EP0443867A1 (fr)
JP (1) JPH04215954A (fr)
CA (1) CA2035195A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1338525A2 (fr) * 2002-02-04 2003-08-27 Illinois Tool Works Inc. Emballage refermable
US6616333B2 (en) 2000-09-22 2003-09-09 Kraft Foods Holdings, Inc. Fastener closure arrangement for flexible packages
US6675558B2 (en) 2001-04-18 2004-01-13 Kraft Foods Holdings, Inc. Method for manufacturing flexible packages having slide closures
US6688080B2 (en) 2001-04-18 2004-02-10 Kraft Foods Holdings, Inc. Method for manufacturing flexible packages having slide closures
US6688079B2 (en) 2001-04-18 2004-02-10 Kraft Foods Holdings, Inc. Method for manufacturing flexible packages having slide closures
US6769229B2 (en) 2001-08-30 2004-08-03 Kraft Foods Holdings, Inc. Method for manufacturing flexible packages having slide closures
US6834474B2 (en) 1999-07-29 2004-12-28 Kraft Foods Holdings, Inc. Package with zipper closure
US8122687B2 (en) 2003-07-31 2012-02-28 Kraft Foods Global Brands Llc Method of making flexible packages having slide closures
WO2015179365A1 (fr) * 2014-05-19 2015-11-26 Illinois Tool Works Inc. Améliorations apportées à une fermeture à nervures multiples espacées

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1072043A (ja) * 1996-08-27 1998-03-17 Meiwa Packs:Kk 包装用袋
US6461043B1 (en) * 2000-05-24 2002-10-08 Colgate Palmolive Company Reclosable bag
JP2005231677A (ja) * 2004-02-19 2005-09-02 Dainippon Printing Co Ltd チャックテープ付き袋
JP4783033B2 (ja) * 2005-02-18 2011-09-28 株式会社共和 不正開封防止袋体

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2417385A1 (fr) * 1978-02-16 1979-09-14 Flexico France Sarl Procede de fabrication d'elements extrudes destines a constituer des sacs, et elements obtenus
FR2546481A1 (fr) * 1983-05-27 1984-11-30 Flexico France Sarl Sachet inviolable, du type en matiere plastique extrudee, a bandes de fermeture a profiles d'accouplement; bandes de fermeture destinees a equiper un tel sachet
EP0302144A2 (fr) * 1987-08-06 1989-02-08 Minigrip Europe Gmbh Sac refermable avec une fermeture du type fermeture à glissière et une fermeture interne non refermable
EP0405995A2 (fr) * 1989-06-30 1991-01-02 Oscar Mayer Foods Corporation Récipient flexible refermable à dispositif de garantie

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2417385A1 (fr) * 1978-02-16 1979-09-14 Flexico France Sarl Procede de fabrication d'elements extrudes destines a constituer des sacs, et elements obtenus
FR2546481A1 (fr) * 1983-05-27 1984-11-30 Flexico France Sarl Sachet inviolable, du type en matiere plastique extrudee, a bandes de fermeture a profiles d'accouplement; bandes de fermeture destinees a equiper un tel sachet
EP0302144A2 (fr) * 1987-08-06 1989-02-08 Minigrip Europe Gmbh Sac refermable avec une fermeture du type fermeture à glissière et une fermeture interne non refermable
EP0405995A2 (fr) * 1989-06-30 1991-01-02 Oscar Mayer Foods Corporation Récipient flexible refermable à dispositif de garantie

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6834474B2 (en) 1999-07-29 2004-12-28 Kraft Foods Holdings, Inc. Package with zipper closure
US6616333B2 (en) 2000-09-22 2003-09-09 Kraft Foods Holdings, Inc. Fastener closure arrangement for flexible packages
US6688080B2 (en) 2001-04-18 2004-02-10 Kraft Foods Holdings, Inc. Method for manufacturing flexible packages having slide closures
US6688079B2 (en) 2001-04-18 2004-02-10 Kraft Foods Holdings, Inc. Method for manufacturing flexible packages having slide closures
US6823647B2 (en) 2001-04-18 2004-11-30 Kraft Foods Holdings, Inc. Apparatus for manufacturing flexible packages having slides closures
US6829873B2 (en) 2001-04-18 2004-12-14 Kraft Foods Holdings, Inc. Apparatus for manufacturing flexible packages having slide closures
US6675558B2 (en) 2001-04-18 2004-01-13 Kraft Foods Holdings, Inc. Method for manufacturing flexible packages having slide closures
US6769229B2 (en) 2001-08-30 2004-08-03 Kraft Foods Holdings, Inc. Method for manufacturing flexible packages having slide closures
EP1338525A2 (fr) * 2002-02-04 2003-08-27 Illinois Tool Works Inc. Emballage refermable
EP1338525A3 (fr) * 2002-02-04 2004-05-26 Illinois Tool Works Inc. Emballage refermable
US8122687B2 (en) 2003-07-31 2012-02-28 Kraft Foods Global Brands Llc Method of making flexible packages having slide closures
WO2015179365A1 (fr) * 2014-05-19 2015-11-26 Illinois Tool Works Inc. Améliorations apportées à une fermeture à nervures multiples espacées
US10011397B2 (en) 2014-05-19 2018-07-03 Illinois Tool Works Inc. Enhancements to spaced multi-rib closure

Also Published As

Publication number Publication date
CA2035195A1 (fr) 1991-08-23
JPH04215954A (ja) 1992-08-06

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