EP0443723A1 - Wiederverschliessbare Verpackung mit produkttragender Folie - Google Patents

Wiederverschliessbare Verpackung mit produkttragender Folie Download PDF

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Publication number
EP0443723A1
EP0443723A1 EP91300545A EP91300545A EP0443723A1 EP 0443723 A1 EP0443723 A1 EP 0443723A1 EP 91300545 A EP91300545 A EP 91300545A EP 91300545 A EP91300545 A EP 91300545A EP 0443723 A1 EP0443723 A1 EP 0443723A1
Authority
EP
European Patent Office
Prior art keywords
product
package
board
recloseable
backing
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.)
Ceased
Application number
EP91300545A
Other languages
English (en)
French (fr)
Inventor
Dean E. Schwarz
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 EP0443723A1 publication Critical patent/EP0443723A1/de
Ceased 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
    • 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

Definitions

  • the present invention relates generally to recloseable packages for hermetically sealing consumable products supported on a backing board and contained on the backing board by an opposing sheet of package film, and more particularly to recloseable packages for food products and the like in which the recloseable seal fastener elements are attached to the backing board and the opposing package film sheet.
  • Certain processed meats and/or food products sold to consumers are sold in packages in which the processed meats or food products are mounted on a backing board.
  • the freshness of these food products such as bacon, sliced luncheon meats, cheeses and the like contained within these packages depends upon the extent to which the package is vacuum packed or gas flushed and subsequently hermetically sealed.
  • the purchaser does not use the food products contained within such packages at once, but rather uses them over an extended period of time.
  • 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. Accordingly, a need exists for an improved food product package of the backing board type which has a recloseable seal.
  • the improved packages of the present invention provide significant advantages in that the hermetic seal extends around the entire periphery of the product interior of the recloseable seal so that the package is liquid tight and suitably retains within the package, fluids of the products contained therein, including water, juices, oils and the like, while the package recloseable seal is adhered to the product backing board so that the package 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 hermetic seal disposed on one surface of the product backing board around the periphery of the product has an easy open or peel seal portion located adjacent the product and interior of the recloseable seal.
  • the recloseable seal is opened with digital pull-apart forces which are also used to open the peal 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 a plastic film and the product backing board around the periphery of the product with the strength of the seal permitting separation without destruction or tearing of the plastic film.
  • the recloseable seal of the package of this invention is attached to an access edge of the product backing board as well as an access edge of the plastic film sheet.
  • One of the recloseable seal interengaging fastener elements is adhered directly to the backing board while the other of the interengaging fastener elements is adhered directly to the package plastic film sheet.
  • the two interengaging fastener elements are firmly anchored to both the backing board and the package film, which decreases the possibility that the packaging material may tear or separate when the hermetic seal is opened.
  • Another object of the present invention is to provide a recloseable package for food products and the like having a recloseable seal disposed near an opening of the package and attached to the product backing board and a hermetic seal interior of the recloseable seal, the hermetic seal having a peelable seal area adjacent to and interior of the recloseable seal.
  • Yet another object of the present invention is to provide an improved product package having a peel seal and a recloseable seal, wherein the recloseable seal elements are attached to an inner product supporting bacon board and to the outer plastic packaging film sheet.
  • FIG 1 illustrates a 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 perishable food product, shown in Figures 1 and 2 as luncheon meat slices 12, between one sheet or panel 14, of a flexible packaging film material and a product backing board 18.
  • the film sheet 14 which forms one sidewall of the package 10 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 and/or moisture.
  • each film sheet 14 When the package film sheet 14 is 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 film.
  • 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.
  • laminates comprised of vinylidene chloride polymer plastic films, such as "Saran", polyvinyl chloride, or ethylene vinyl acetate plastic film are suitable.
  • film sheet 14 is of a laminated construction, it is preferable to have a layer of ethylene vinyl acetate on the surface of the film sheet which will contact the product backing board 18.
  • FIGS 1 and 2 illustrate a package 10 in which one film sheet 14 encloses a plurality of luncheon meat slices 12 positioned on a generally rectangular, and substantially rigid product tray or backing board 18, sometimes referred to as "bacon" boards.
  • the backing board 18 is also preferably constructed from a material which is impervious to air, oxygen and/or moisture.
  • a somewhat rigid thermoplastic sheet is used to provide a support surface 20 for the luncheon meat 12 and to serve as the other sidewall of the package 10.
  • Backing boards formed from polyvinyl chloride or Barex have been found to exhibit the preferred desired rigidity and film sealing capabilities.
  • Cardboard may also be used as the product backing board provided that it has been previously rendered impervious to oxygen, air and/or mositure, such as by wax impregnation.
  • the luncheon meat slices 12 or the like are desirably positioned on the backing board 18 within a means for retaining the luncheon meat in a packaged product area 16, illustrated as a raised portion or wall 15 of the backing board 18. Not only does the raised portion 15 retain the luncheon meat 12 within the packaged product area 16, but also it confines any juices, oils, or fluids from the luncheon meat within the product area 16.
  • the raised portion 15 can be formed integrally within the backing board 18 (most easily accomplished when the backing board 18 is made of a thermoplastic material) or alternately, can be formed by attaching a separate member to the backing board 18.
  • the film sheet 14 and the backing board 18 are combined by contacting each other around the luncheon meat 12 to form an inside border area 22 within the raised portion 15 and a peripheral margin 42 extending around the periphery of the product as positioned on the backing board 18.
  • a vacuum is applied to the space between the film sheet 14 and luncheon meat 12
  • the film sheet 14 is drawn inwardly about the luncheon meat 12 or the like to conform to the contour thereof to provide the package 10 with improved rigidity for withstanding rigorous handling during transport and retail display and the like.
  • the surface of the film sheet 14 which contacts the backing board 18 is formed from a layer of ethylene vinyl acetate
  • the inherent adhesive qualities of the ethylene vinyl acetate laminate form a secure, yet peelable, hermetic continuous edge seal 24 outside the board raised portion 15, which maintains a secure seal during handling and storage that can be peeled back upon the application of digital forces applied through an outer recloseable seal 26 or the like.
  • the package has a first, outer recloseable seal 26 illustrated as a conventional interengaging fastener assembly 27 such as a rib and groove fastener assembly.
  • a conventional interengaging fastener assembly 27 such as a rib and groove fastener assembly.
  • the interengaging fastener assembly 27 is illustrated as one that is particularly secure for the illustrated type of package 10, namely having a length of a formed double rib element strip 28 and a similar length of a formed double groove strip 29, it will be noted that the interengaging fastener elements 28 and 29 of the recloseable seal 26 are not limited to any particular number of interengaging fastener elements.
  • the ribs 30 project outwardly from the double rib element strip 28 a sufficient distance to be securely interengaged with and held by their confronting and complementary counterparts in the double groove element strip 29.
  • the double groove element strip 29 shown includes three outwardly extending walls 32 which define two channels or grooves 34 therebetween.
  • the grooves 34 are of sufficient width to firmly engage the ribs 30 when the confronting interengaging fastener strips 28, 29 are pressed together.
  • Both the recloseable seal 26 and the interengaging fastener assembly 27 can take any number of various characteristics and configurations in addition to those described herein.
  • the rear surfaces of the interengaging fastener elements 28, 29 include attachment means in the form of flanges 36a, 36b which extend transversely to the fastener elements 28, 29. These flanges 36a, 36b are of a sufficient width to provide appropriate surfaces to adhere and seal both the film sheet 14 and the backing board 18 to the recloseable seal fastener elements 28, 29. When the flanges 36a, 36b are sufficiently wide, it is desirable to locate the interengaging fastener elements 28, 29 toward the bottom of the flanges so that the uppermost portions 60 of the flanges 36a, 36b will serve as pull flanges 61 which easily enable the user to obtain easy access to the recloseable seal 26.
  • the flanges 36a, 36b can be separate members which are formed apart from the rib and groove elements and subsequently attached thereto by any suitable means such as heat sealing or adhesive sealing.
  • the flanges 36a, 36b can be integrally formed with their respective fastener elements 28, 29.
  • One sealing flange 36b of the interengaging fastener elements 28, 29 is disposed so that the longitudinal surface 40b of the flange 36b is opposite and adjacent to the backing board 18.
  • the interengaging fastener assembly 27 is attached to the backing board 18 by adhering the fastener element flange longitudinal surface 40b to the backing board access edge 38.
  • the fastener assembly 27 may be adhered to the backing board 18 by heat sealing, ultrasonic welding or the like.
  • the interengaging fastener assembly 27 is preferably of the same length as the backing board 18 and the interengaging fastener elements 28, 29 are attached together at their opposite ends 70 so that the fastener material is not wasted in the trimming of the package 10 and so that it does not interfere with the peripheral hermetic seal 44 of the package.
  • the product 12 is positioned on the backing board 18 within the upraised portion 15 thereof to form a product board assembly.
  • the film sheet 14 is brought into contact with the backing board 18, and a vacuum is applied therebetween.
  • a second, hermetic seal 44 is formed around the periphery of the product and interior of the first outer, recloseable seal 26.
  • the film sheet 14 is then permanently adhered to the recloseable seal 26 along the longitudinal surface 40a of the fastener element flanges 36a, by heat sealing, ultrasonic welding, by sealing with an adhesive, or by any other suitable means. Any air present between the film sheet 14 and the backing board 18 when the product 12 is inserted can be evacuated and/or the product 12 gas-flushed if desired.
  • the hermetic seal 44 may be entirely of a peelable nature with the hermetic seal portion thereof having a stronger bond effected between the film and the backing board peripheral margin 42 than in the peelable seal portion 46 interior of the recloseable seal 26 so that the hermetic seal 44 is, for all intents and purposes, non-peelable.
  • hermetic seal 44 is positioned interior of the recloseable seal 26, the likelihood of "leakers”, i.e., packages wherein the product juices or oils escape from the product area 16 and enter the recloseable seal area, is greatly diminished.
  • a continuous strip of the recloseable seal interengaged fastener elements 28, 29 may be fed and applied to the access edge 38 of a continuous length of the backing board 18.
  • the continuous strip of interengaged fastener elements 28, 29 are preferably trimmed even with the edges of the backing board 18 and are attached together at their ends 70 to form the package mouth 80. Accordingly, there is no wasting of the recloseable seal material.
  • An individual backing board 18 may then be dimensioned and cut from the continuous length and transferred to a product application area.
  • a preselected amount of luncheon meat 12 is then deposited on the backing board 18 within the previously formed upraised portion 15 to form a product-backing board assembly, which is subsequently transferred to a packaging station where the film sheet 14 may be fed from supply rolls into a position opposite the product support surface 20 of the product-backing board assembly and into contact therewith at a peripheral margin 42 extending around the product-backing board assembly.
  • the film sheet 14 is adhered to the recloseable seal fastener element flange surface 40a, and is further bonded to the backing board 18 at the peripheral margin 42 thereof to form the package hermetic seal.
  • a package label 75 shown in phantom
  • other package graphics may be applied to the film sheet in a conventional manner.
  • the user grips the two pull flanges 60, 61 of the interengaged fastener element flanges 36a, 36b and applies digital pull apart forces to open the peel seal portion 46 of the hermetic seal 44.
  • the recloseable seal 26 will separate up to their attached ends 70 and open, thereby allowing access to the inner peelable seal.
  • the recloseable seal fastener elements 28, 29 will open to form a package mouth 80 and because the recloseable seal 26 is adhered to the backing board 18 and attached at its ends 70, the likelihood of destruction of the integrity of the package 10 is greatly diminished.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
EP91300545A 1990-02-20 1991-01-24 Wiederverschliessbare Verpackung mit produkttragender Folie Ceased EP0443723A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48217390A 1990-02-20 1990-02-20
US482173 1990-02-20

Publications (1)

Publication Number Publication Date
EP0443723A1 true EP0443723A1 (de) 1991-08-28

Family

ID=23915004

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91300545A Ceased EP0443723A1 (de) 1990-02-20 1991-01-24 Wiederverschliessbare Verpackung mit produkttragender Folie

Country Status (3)

Country Link
EP (1) EP0443723A1 (de)
JP (1) JPH04215953A (de)
CA (1) CA2035196A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6539762B2 (ja) * 2018-04-19 2019-07-03 株式会社生産日本社 製品入り外袋の巻き取り品又はつづら折り品、それらの製造方法及び袋体の供給方法
JP7261618B2 (ja) * 2019-03-06 2023-04-20 株式会社生産日本社 製品入り外袋、製品入り外袋の巻き取り品又はつづら折り品、それらの製造方法及び袋体の供給方法並びに嵌合具付き筒状外袋及び筒状外袋の使用方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4246288A (en) * 1979-08-09 1981-01-20 W. R. Grace & Co. Reclosable package
US4371553A (en) * 1980-08-01 1983-02-01 James River-Dixie/Northern, Inc. Package including product support insert
EP0395362A1 (de) * 1989-04-24 1990-10-31 Reynolds Consumer Products, Inc. Verfahren zum Herstellen von wiederverschliessbaren Verpackungen, dabei verwendete Profilstreifen und so hergestellte Verpackungen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4246288A (en) * 1979-08-09 1981-01-20 W. R. Grace & Co. Reclosable package
US4371553A (en) * 1980-08-01 1983-02-01 James River-Dixie/Northern, Inc. Package including product support insert
EP0395362A1 (de) * 1989-04-24 1990-10-31 Reynolds Consumer Products, Inc. Verfahren zum Herstellen von wiederverschliessbaren Verpackungen, dabei verwendete Profilstreifen und so hergestellte Verpackungen

Also Published As

Publication number Publication date
JPH04215953A (ja) 1992-08-06
CA2035196A1 (en) 1991-08-21

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