EP0457617A1 - Wiederverschliessbare Doppelverpackung mit Originalitätssicherung und Verfahren zu deren Herstellung - Google Patents

Wiederverschliessbare Doppelverpackung mit Originalitätssicherung und Verfahren zu deren Herstellung Download PDF

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Publication number
EP0457617A1
EP0457617A1 EP91304481A EP91304481A EP0457617A1 EP 0457617 A1 EP0457617 A1 EP 0457617A1 EP 91304481 A EP91304481 A EP 91304481A EP 91304481 A EP91304481 A EP 91304481A EP 0457617 A1 EP0457617 A1 EP 0457617A1
Authority
EP
European Patent Office
Prior art keywords
package
recloseable
fastener
double
tandem
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
EP91304481A
Other languages
English (en)
French (fr)
Other versions
EP0457617B1 (de
Inventor
Gerald O. Hustad
Donald E. Lucke
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
Priority to AT9191304481T priority Critical patent/ATE104631T1/de
Publication of EP0457617A1 publication Critical patent/EP0457617A1/de
Application granted granted Critical
Publication of EP0457617B1 publication Critical patent/EP0457617B1/de
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
    • 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
    • B65D33/2533—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 the slide fastener being located between the product compartment and the tamper indicating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/188—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying or incorporating profile-strips, e.g. for reclosable bags
    • 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
    • B65D2401/00—Tamper-indicating means
    • B65D2401/10—Tearable part of the container

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 in which each distinct package has its own associated recloseable seal and to a method for manufacturing such packages in tandem.
  • the freshness of certain processed meats and/or food products depends upon the extent to which the food product package is vacuum packed or gas flushed and subsequently hermetically sealed. Often, the purchaser does not use the food products contained within such packages at once, but rather uses them over an extended period of time. When the initial hermetic seal of the package has been breached during opening of the package, a portion or portions of the package are often removed. In such instances, the package cannot be effectively resealed in a manner to preserve the freshness of the food products stored within. The purchaser must often repack the food products in a different suitably recloseable container.
  • the package of the present invention provides a solution to the above mentioned problem in that it has two distinct package sections each with its own hermetic seal, interior of a package recloseable seal, which extends around the entire periphery of the product so that the recloseable package is liquid tight and suitably retains within the package, fluids of the products contained therein, including water, juices, oils and the like.
  • the recloseable seal is permanently attached at its ends so that each distinct package section can be opened and closed repeatedly to remove portions of the package contents without destroying the integrity of the package.
  • a "zipper" seal consisting of interengaging components such as rib and groove fastener elements is the preferred recloseable seal means.
  • the recloseable seals associated with each distinct package sections are attached to confronting faces of the packaging films.
  • Interengaging fastener elements of the recloseable seals are provided in pairs each having a central interconnecting web and are adhered directly to the opposing package panels.
  • Each interengaging fastener element is permanently anchored to its respective opposing package panel and is sealed at the opposite ends thereof, which decreases the possibility that the package films may tear or separate when the package section is accessed.
  • Central web portions of the tandem package which separate the two distinct package sections preferably contain a tamper-evident feature in the form of a pair of lines of weakening extending therein which must be broken for the user to obtain access to the two package section recloseable seals.
  • the hermetic seal disposed around the periphery of the food product in each package has an easy open or peel seal portion located peripherally adjacent to the recloseable seal.
  • the peel seal is opened with digital pull-apart forces which are also used to open the recloseable seal.
  • the peripheral hermetic seal can maintain a vacuum, pressurized and/or gas-flushed environment within the package.
  • the peel seal area of the hermetic seal will be formed by effecting a face-to-face seal between two plies of plastic film exterior of the product with the strength of the seal permitting separation without destruction or tearing of either ply.
  • Another object of the present invention is to provide a recloseable package which can be easily manufactured in a tandem package assembly wherein each of the tandem packages has a hermetic seal surrounding the packaged product, a recloseable seal exterior of the hermetic seal and a permanently sealed tear strip exterior of the recloseable seal.
  • a further object of the present invention is to provide a tandem package having two distinct package sections containing a food product portion or the like, each package having a separate recloseable seal associated with each food product portion, the two distinct package section being joined by a package central web portion having lines of weakening associated therewith which define distinct package section tear strips.
  • Still another object of the present invention is to provide an improved method of manufacturing recloseable product packages in tandem, wherein each package has a peel seal and a recloseable seal, wherein the recloseable seal elements are attached to the first and second package film.
  • Yet another object of the present invention is to provide an improved method of making recloseable packages in tandem, wherein a double fastener assembly is adhered to confronting surfaces of opposing package panels so as to provide each distinct package with its own tamper-evident tear strip.
  • Figures 4 and 5 illustrate an embodiment of a recloseable package 100 constructed in accordance with the principles of the present invention which is manufactured in tandem and is separated after manufacture along a center line 103 into two distinct counterpart packages 110, 210.
  • the first and second film sheets 116 and 114 which are combined to form the package 100 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 10 and for use in the method of the present invention is one which is impervious to air, oxygen or moisture.
  • each film sheet 116, 114 When the package film sheets 116, 114 are formed from a laminated construction, it is desirable to use a thin, inner layer which is impervious to air, oxygen or moisture in combination with an outer layer having sufficient flexibility and desirable structural characteristics so that the laminate can function as a package sidewall.
  • each film sheet will be shown as a single heat-sealable lamina. In actual practice, each film sheet 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 hermetic, and if desired, peelable seal at thin inner surfaces.
  • a surface of vinylidene chloride polymer plastic films such as "Saran” in contact with a surface of an ethylene vinyl acetate plastic film, or of a "Surlyn” ionomer in contact with a “Surlyn” ionomer mixture or of a polyethylene in contact with a polyethylene mixture can form such desired bonds.
  • the tandem package 100 is assembled by advancing a package first film sheet 116 having a width W t sufficient to accommodate two separate product portions 112, 212 in two distinct package sections 110, 210.
  • An easily separable two-piece interengaged fastener assembly 127 is applied to the central portion of the first film sheet 116 to form a central web portion 105 of the tandem package 100 and which defines the adjoining two distinct package sections 110, 210.
  • the interengaged fastener assembly 127 includes an elongated first, or lower, fastener element strip 130, which contains two parallel fastener elements, shown as rib elements 132, 232 extending along the opposite ends thereof.
  • the two first fastener elements 132, 232 are interconnected by a central first fastener element strip integral web 150 so that the first element strip 130 may be extruded as a continuous length.
  • An elongated second, or upper, fastener element strip 131 also contains two parallel fastener elements, illustrated as groove elements 134, 234 which extend along the opposite ends thereof. Similar to the first rib elements 132, 232, the second groove elements 134, 234 are interconnected by a central second fastener element strip integral web 152 which also permits the second fastener element strip to be extruded in a continuous length.
  • first and second fastener elements need not be limited to any particular number of interengaging fastener elements or limited in the orientation of the rib and groove elements, i.e., upper or lower. Rather, it is preferred that the fastener elements have a sufficient width and depth to be securely interengaged when assembled to withstand the rigorous handling which commonly occurs during transport, retail display and the like without separating. Additionally, the first and second fastener elements of the double fastener assembly 127 can take any number of various characteristics and configurations in addition to the rib and groove configurations illustrated herein.
  • the first and second fastener element strips 130, 131 art preferably interengaged prior to applying the double fastener assembly 127 to the first film sheet 116.
  • the interengaged fastener elements of the first and second integral webs 150, 151 provide each of the two distinct package sections 110, 210 with a recloseable seal 126, 226.
  • first and second webs 150, 151 have a preselected width between the recloseable seal fastener elements which is sufficient to provide a tamper-evident tear strip 160, 260 for each distinct package section as more fully described below.
  • the width of the opposite sides of each of the first and second webs 150, 151, is also wide enough to serve as respective package sealing flanges 135a, 135b which provide the double fastener assembly 127 with respective upper and lower surfaces to adhere the first and second film sheets 116, 114 together.
  • first and second integral webs 150, 151 have respective confronting film sheet portions attached thereto they are thick enough to serve as pairs of package pull flanges 136, 137 and 236, 237 associated with their respective distinct package sections 110, 210.
  • the outside surfaces of the two sealing flanges 136, 137 are adhered respectively to the first and second film sheets.
  • the double fastener assembly 127 may be applied as a unit to the first or bottom film sheet 116 in the form of a continuous strip and trimmed, at a convenient time during the manufacturing process, to define the eventual finished package mouth.
  • the separate rib and groove fastener elements 132, 232 and 134, 234 are permanently attached at the ends of the two package section recloseable seals 126, 226 so that the fastener material is not wasted in the trimming of the packages and so that when the recloseable seal is opened, the purchaser cannot disrupt the integrity of the interior hermetic seals 144, 244 of the two distinct package sections 110, 210.
  • two food product portions 112, 212 such as sliced luncheon meat or the like, are positioned on the bottom film sheet 116 in the two distinct package sections 110, 210.
  • the top film sheet 114 is brought into contact with the two food product portions 112, 212, the bottom film sheet 116 and the double fastener assembly second fastener strip 131, and a vacuum is applied therebetween.
  • a first permanent, hermetic seal 144, 244 is formed in the margins 122, 222 surrounding each food product 112, 212 in the two distinct package sections 110, 210. These outer hermetic seals 144, 244 surround each food product portion 112, 212 on three sides.
  • the hermetic seals 144, 244 may be completely extended around the periphery of the two food product portions 112, 212 by forming an inner peelable hermetic seal 146, 246 in each distinct package section 110, 210 interior of the recloseable seals 126, 226 and exterior of the food product portions 112, 212. It is preferable that the inner hermetic seals 146, 246 are secure, yet peelable hermetic seals which maintain a secure seal during handling and storage that can be peeled back upon the application of digital forces applied to the second recloseable seals 126, 226.
  • the top film sheet 114 may then be adhered to the second sealing flange 135b of the double fastener assembly 127, thereby sealing the two product portions 112, 212 into their respective distinct package sections 110, 210.
  • Means for separating and gaining access to the recloseable seals 126, 226 of the two package section as well as means for indicating prior opening of the package sections are illustrated as parallel lines of weakening 170, 270, which extend longitudinally through the package central web portion 105 between the recloseable seals 126, 226 of the two package sections.
  • the lines of weakening 170, 270 serve as a component of a tamper-evident feature which indicates prior access to the recloseable seals 126, 226.
  • the lines of weakening can be administered to the package central web portion 105 in any suitable manner such as by perforations or scoring. Additionally, either one or both of the first and second fastener element strips 130, 131 of the double fastener assembly 127 may be provided with a visually distinctive layer such as a relatively bright red layer 190 which is either co-extruded with the fastener element strip, such as the first, or bottom fastener element strip 130, or separately adhered thereto.
  • the colored layer 190 serves to provide each of the two package sections 110, 210 with a visually distinctive appearance when either of the lines of weakening 170, 270 are broken.
  • the lines of weakening 170, 270 are exterior of the recloseable seals 126, 226 and interior of the seal between the first and second integral webs 150, 152.
  • the two distinct package sections 110, 210 may be separated from each other along a longitudinal line 103 extending through the center of the package central web portion 105 between the recloseable seals 126, 226.
  • the user grips the package and tears off the tear strip 160 along the line of weakening 170 and exposes a package mouth 195 to gain access to the inner second recloseable seal 126.
  • the excess material of the first and second integral webs 150, 151 extending from the respective fastener elements 132, 134 up to the package mouth 195 serves to provide package pull flanges 136, 137 of substantially similar length which are gripped by the user for applying digital pull apart forces thereto in order to open the recloseable seal 126 of the package section 110.
  • the recloseable seal interengaged fastener elements 132, 134 will separate and open to form a package section mouth 195, thereby allowing access to the inner peelable hermetic seal 146 and the food product portion contained thereby.
  • Figures 1-3 illustrate a package 10 which has been removed from its counterpart package by separating the two along the central web portion center line 3.
  • the top and bottom film sheets 14, 16 cooperatively enclose a food product portion 12 positioned on the first film sheet 16.
  • the food product 12 or the like is desirably positioned on the first film sheet 16 to provide a peripheral margin 22 surrounding it.
  • the film sheets 14, 16 contact each other around the food product 12 to form a continuous edge seal 24 extending around the periphery of the food product.
  • the package 10 has a first recloseable seal 26 disposed above a second, inner peelable hermetic seal 46.
  • the recloseable seal 26 includes a pair of fastener strips 28, 29 with interengaging fastener elements 32, 34 adhered to confronting faces of the first and second film sheets 14, 16.
  • the rear surfaces of the interengaging fastener strips 28, 29 each intrude film sealing surfaces 35a, 35b which extend transversely to the fastener strips 28, 29 and which are sealed to the package film sheets 14, 16 by any suitable means such as heat sealing or adhesive sealing.
  • the sealing flanges 35a, 35b of the interengaging fastener elements 28, 29 are sufficiently wide so that each flange has a large enough surface to adhere to the package film sheets and to serve as package pull flanges 36, 37 to assist the user in separating the recloseable seal fastener elements of the finished package.
  • the two sealing flanges 35a, 35b extend up to and terminate at the package top 65.
  • a line of weakening 70 is disposed parallel to and interior of the package top 65 and defines a tear strip 60 extending at or slightly exterior of the line of weakening 70.
  • the two sealing flanges 135a, 135b may be sealed together along the tear strip 60.
  • Either or both of the sealing flanges 135a, 135b may include a colored layer, shown as a red portion, in the package area above the line of weakening 70.
  • the user grips the tear strip 60 along the package top 65 and tears it off along the line of weakening 70.
  • the package mouth 62 which is formed by the opposing fastener element sealing flanges 35a, 35b is accessed and the user grips the free edges of the pull flanges 36, 37 and applies digital pull apart forces to open the recloseable seal 26. Further exertion of digital forces will separate the peel seal portion 46 of the hermetic seal 44, thereby allowing access to the package contents 12.
  • the recloseable seal 26 is permanently secured together at its ends 80 so that the likelihood of destruction of the integrity of the package 10 is greatly diminished.
  • the packages of the present invention is greatly simplified in that the three major package components, namely, the first or bottom package film 116, the double fastener assembly 127 and the second or covering package film 114 can be supplied to one or more package assembly stations in a continuous fashion to assemble, if desired, a continuous length of tandem packages which can then be separated into separate tandem packages 100 and further separated into individual packages.
  • the three major package components namely, the first or bottom package film 116, the double fastener assembly 127 and the second or covering package film 114 can be supplied to one or more package assembly stations in a continuous fashion to assemble, if desired, a continuous length of tandem packages which can then be separated into separate tandem packages 100 and further separated into individual packages.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Making Paper Articles (AREA)
  • Bag Frames (AREA)
  • Cartons (AREA)
EP91304481A 1990-05-17 1991-05-17 Wiederverschliessbare Doppelverpackung mit Originalitätssicherung und Verfahren zu deren Herstellung Expired - Lifetime EP0457617B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT9191304481T ATE104631T1 (de) 1990-05-17 1991-05-17 Wiederverschliessbare doppelverpackung mit originalitaetssicherung und verfahren zu deren herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US52537490A 1990-05-17 1990-05-17
US525374 1990-05-17

Publications (2)

Publication Number Publication Date
EP0457617A1 true EP0457617A1 (de) 1991-11-21
EP0457617B1 EP0457617B1 (de) 1994-04-20

Family

ID=24092987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91304481A Expired - Lifetime EP0457617B1 (de) 1990-05-17 1991-05-17 Wiederverschliessbare Doppelverpackung mit Originalitätssicherung und Verfahren zu deren Herstellung

Country Status (5)

Country Link
EP (1) EP0457617B1 (de)
JP (1) JPH06340009A (de)
AT (1) ATE104631T1 (de)
CA (1) CA2042692A1 (de)
DE (1) DE69101737D1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0547966A1 (de) * 1991-12-17 1993-06-23 Minigrip, Incorporated Sicherheitsverpackung mit wiederverschliessbaren Druckverschlussbändern
EP0608123A1 (de) * 1993-01-19 1994-07-27 Kraft Foods, Inc. Leicht zu öffnender und zu schliessender Beutel sowie Verfahren und Einrichtung für dessen Herstellung
US5519982A (en) * 1991-05-31 1996-05-28 Kraft Foods, Inc. Pouch having easy opening and reclosing characteristics and method and apparatus for production thereof
US7086782B2 (en) * 1999-05-11 2006-08-08 Sargento Foods, Inc. Resealable bag for filling with food products and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003100915A4 (en) * 2003-11-05 2003-12-18 Patricia Lee Jeffree Improved food storage container
JP2009025581A (ja) * 2007-07-20 2009-02-05 Michiyoshi Nagashima 印刷方法および印刷装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2329439A1 (fr) * 1975-11-03 1977-05-27 Flexico France Sarl Procede et machine pour la reunion d'une feuille a au moins une bande portant un profile d'accouplement, les produits obtenus et leurs parties
US4246288A (en) * 1979-08-09 1981-01-20 W. R. Grace & Co. Reclosable package
CA1265104A (en) * 1985-09-04 1990-01-30 Donald E. Beckett Resealable tamper-evident package
US4923309A (en) * 1989-02-27 1990-05-08 Illinois Tool Works Tamper-evident package
EP0405995A2 (de) * 1989-06-30 1991-01-02 Oscar Mayer Foods Corporation Wiederverschliessbare beutelartige Verpackung mit Originalitätssicherung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2329439A1 (fr) * 1975-11-03 1977-05-27 Flexico France Sarl Procede et machine pour la reunion d'une feuille a au moins une bande portant un profile d'accouplement, les produits obtenus et leurs parties
US4246288A (en) * 1979-08-09 1981-01-20 W. R. Grace & Co. Reclosable package
CA1265104A (en) * 1985-09-04 1990-01-30 Donald E. Beckett Resealable tamper-evident package
US4923309A (en) * 1989-02-27 1990-05-08 Illinois Tool Works Tamper-evident package
EP0405995A2 (de) * 1989-06-30 1991-01-02 Oscar Mayer Foods Corporation Wiederverschliessbare beutelartige Verpackung mit Originalitätssicherung

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5519982A (en) * 1991-05-31 1996-05-28 Kraft Foods, Inc. Pouch having easy opening and reclosing characteristics and method and apparatus for production thereof
US5525363A (en) * 1991-05-31 1996-06-11 Kraft Foods, Inc. Cheese pouch having easy opening and reclosing characteristics
EP0547966A1 (de) * 1991-12-17 1993-06-23 Minigrip, Incorporated Sicherheitsverpackung mit wiederverschliessbaren Druckverschlussbändern
EP0608123A1 (de) * 1993-01-19 1994-07-27 Kraft Foods, Inc. Leicht zu öffnender und zu schliessender Beutel sowie Verfahren und Einrichtung für dessen Herstellung
US7086782B2 (en) * 1999-05-11 2006-08-08 Sargento Foods, Inc. Resealable bag for filling with food products and method
US8523437B2 (en) 1999-05-11 2013-09-03 Sargento Foods, Inc. Resealable bag for filling with food product (s) and method

Also Published As

Publication number Publication date
JPH06340009A (ja) 1994-12-13
CA2042692A1 (en) 1991-11-18
EP0457617B1 (de) 1994-04-20
ATE104631T1 (de) 1994-05-15
DE69101737D1 (de) 1994-05-26

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