Connect public, paid and private patent data with Google Patents Public Datasets

Reclosable thermoformed flexible packages and method of making same

Download PDF

Info

Publication number
US20050194282A1
US20050194282A1 US10795476 US79547604A US2005194282A1 US 20050194282 A1 US20050194282 A1 US 20050194282A1 US 10795476 US10795476 US 10795476 US 79547604 A US79547604 A US 79547604A US 2005194282 A1 US2005194282 A1 US 2005194282A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
flexible
panel
surface
seal
rear
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.)
Abandoned
Application number
US10795476
Inventor
Amy Kraimer
Edward Haedt
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.)
Curwood Inc
Original Assignee
Curwood Inc
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

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/16End- or aperture-closing arrangements or devices
    • B65D33/25Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508Riveting; 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 and operated without a slider
    • B65D33/2516Riveting; 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 and operated without a slider comprising tamper-indicating means, e.g. located within the fastener
    • B65D33/2533Riveting; 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 and operated without a slider comprising tamper-indicating means, e.g. located within the fastener the slide fastener being located between the product compartment and the tamper indicating means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00Miscellaneous auxiliary devices operating on sheets, blanks, webs, binding material, containers, or packages, and not otherwise provided for
    • B65B61/18Miscellaneous auxiliary devices operating on sheets, blanks, webs, binding material, containers, or packages, and not otherwise provided for for making package-opening or unpacking elements
    • B65B61/188Miscellaneous auxiliary devices operating on sheets, blanks, webs, binding material, containers, or packages, and not otherwise provided for for making package-opening or unpacking elements by applying or incorporating profile-strips, e.g. for reclosable bags
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/16End- or aperture-closing arrangements or devices
    • B65D33/18End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
    • B65D33/20End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps using pressure-sensitive adhesive
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/16End- or aperture-closing arrangements or devices
    • B65D33/25Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2591Riveting; 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 and operated with a slider
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D81/00Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2069Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas in a special atmosphere
    • B65D81/2084Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas in a special atmosphere in a flexible container

Abstract

A reclosable flexible package containing an article comprising a front flexible panel and a rear flexible panel. The reclosable flexible package has at least one panel comprising a thermoplastic film which is thermoformed; a reclosable fastener means; at least one line of structural weakness in the exterior surface of the front flexible panel and at least one line of structural weakness in the exterior surface of the rear flexible panel; and a tamper-evident structure. The tamper-evident structure includes a first portion comprising the front flexible panel extending from the at least one line of structural weakness in the exterior surface of the front flexible panel to a top seal (or top seal portion) and from the at least one line of structural weakness in the exterior surface of the rear flexible panel to a top seal (or top seal portion).

Description

    BACKGROUND OF THE INVENTION
  • [0001]
    The present invention relates generally to reclosable flexible packages and more specifically, to reclosable flexible packages which are thermoformed and may be hermetically sealed if desired. The invention is also concerned with a method of manufacturing the packages according to the present invention.
  • [0002]
    Over the years, there have been a number of improvements to conventional flexible bags and packages for containing food and non-food items which have resulted in greater convenience to the consumer. Most notable improvements in the art have been the addition of reclosable and security features to the flexible package designs. For example, goods that are not used completely when the package is initially opened rely on a closure mechanism to reseal the package and keep the remaining contents fresh and contained therein. Reclosability may be accomplished by the use of a mechanical fasteners of various types. A common type of resealing mechanical fastener is the “zipper-type” having two interlocking zipper members and may include a slider device mounted on top of the fastener. The slider device which is connected to the two interlocking members, helps to engage the interlocking zipper members when the slider device is moved in a first direction along the zipper, thereby closing the package. The slider device also helps pry apart or disengage the interlocking zipper members when the slider device is moved in an opposite direction along the zipper, thereby opening the package. Non-mechanical fasteners have also been used to provide reclosability which include peelable and resealable strips and adhesives.
  • [0003]
    Since reclosable packages can easily be opened, tamper-evident features have been added which alert the consumer to any breach of security prior to purchase. Often the tamper-evident feature is a structural feature such as a hood or shroud which covers part or all of the reclosable fastener which must be removed in order to operate to the reclosable fastener.
  • [0004]
    By way of example, attention is directed to the following U.S. patents as representative of various approaches of packages having a reclosable and/or tamper-evident features with which the present invention relates by way of improvement:
  • [0005]
    U.S. Pat. Nos. 4,246,288 and 4,437,293 disclose a reclosable package and a method and apparatus for making such a reclosable package.
  • [0006]
    U.S. Pat. No. 4,823,961 to Griesbach et al. and U.S. Pat. No. 4,925,316 to Van Erden et al., describe hermetically sealed non-thermoformed packages having a reclosable fastener means comprising interlocking closure strips being operable responsive to digital pull-apart force for accessing the contents reserved in the package.
  • [0007]
    U.S. Pat. No. 5,246,720 to Buchko describes a flexible reclosable package which is thermoformed and includes an interlocking fastener means. A score-line is provided adjacent to the top seal which facilitates the removal of the top to gain access into the package.
  • [0008]
    U.S. Pat. No. 6,360,513 to Strand et al. discloses a non-thermoformed reclosable bag for filling with a food product. The package is provided with a zipper-type interlocking fastener means and slider device which is covered with a folded-hood structure that serves as a tamper-evident feature. Two score-lines are also included to help remove the folded-hood structure.
  • [0009]
    U.S. Pat. No. 6,517,242 to Buchman describes non-thermoformed packages having a reclosable fastener means comprising a zipper-type interlocking closure fastener with a slider device. Disclosed are packages that are provided with a tamper-evident feature of various structures. Lines of structural weaknesses are also provided with which to aid in the removal of the tamper-evident structure.
  • [0010]
    U.S. Patent Application No. 2003/0219176 to Koccher et al. and U.S. Patent Application No. 2003/02318811 to Hodson et al. also describe non-thermoformed packages having a reclosable fastener means comprising a zipper-type interlocking reclosable fastener means with a slider device, and lines of weakness in the package panels.
  • [0011]
    U.S. Patent Application No. 2003/0219173 to Schneider discloses a thermoformed package having a reclosable fastener means comprising a zipper-type interlocking reclosable fastener means with a slider device and a tamper-evident structure which covers the reclosable fastener means. A line of structural weakness is provided in the non-thermoformed package panel to help in the removal of the tamper-evident structure.
  • [0012]
    Notwithstanding the fairly high state of development in the art, packaging manufacturers are continually striving to improve the functionality of their flexible packages.
  • SUMMARY OF THE INVENTION
  • [0013]
    The present invention is directed to thermoformed flexible packages suitable for packaging food and non-food items. In accordance with the present invention, the packages are provided with a reclosable fastener means which allow the consumer to open and reclose the package at his or her own discretion. The packages are further provided with a tamper-evident structure which preserves the integrity of the package before purchase and may be easily removed to gain access to the reclosable fastener means of the package. Accordingly, the packages may further be hermetically sealed to protect the food and non-food items contained therein.
  • [0014]
    The packages of the present invention include a front flexible panel having an interior surface and an exterior surface and comprising a first thermoplastic film. The packages also include a rear flexible panel having an interior surface and an exterior surface and comprising a second thermoplastic film which is thermoformed. The front flexible panel and rear flexible panel each have a perimeter having a first peripheral side edge and an opposing second peripheral side edge, connected by a peripheral top edge and an opposing bottom peripheral edge. The interior surface of the front flexible panel is joined to the interior surface of the rear flexible panel by either a contiguous seal or a plurality of seals. The contiguous seal includes a first side seal portion, an opposing second side seal portion, and a top seal portion, an opposing bottom seal portion in which the seal portions are connected to form a seal perimeter between the front flexible panel and rear flexible panel thereby forming a receptacle cavity. Alternatively, the plurality of seals includes a first side seal, an opposing second side seal, and a top seal, an opposing bottom seal in which the seals are connected to form a perimeter between the front flexible panel and rear flexible panel thereby forming a receptacle cavity.
  • [0015]
    The package further includes a reclosable fastener means which allow a consumer to gain access to the receptacle cavity of the package. The reclosable fastener means is disposed between the interior surface of the front flexible panel and the interior surface of the rear flexible panel. A tamper-evident structure is also incorporated into the package to encompass the reclosable fastener means thereby giving the consumer a visual indication that the integrity of the package has been compromised. The tamper-evident structure serves as a barrier to the reclosable fastener means by having a first portion comprising the front flexible panel which extends from at least one line of structural weakness in the exterior surface of the front panel to either the top seal portion or top seal, and a second portion comprising the rear flexible panel which extends from at least one line of structural weakness in the exterior surface of the rear panel to either the top seal portion or the top seal.
  • [0016]
    To facilitate the removal of the tamper-evident structure, the package further includes at least one line of structural weakness in the exterior surface of the front panel which extends transversely from one side peripheral edge of the package to the opposite second side peripheral edge, and at least one line of structural weakness in the exterior surface of the rear panel which extends transversely from one side peripheral edge of the package to the opposite second side peripheral edge. The at least one line of structural weakness in the exterior surface of the front panel and the at least one line of structural weakness in the exterior surface of the rear panel are both positioned below and adjacent to the reclosable fastener means.
  • [0017]
    In one embodiment, the inventive package includes an interior surface of the front flexible panel joined to the interior surface of the rear flexible panel by a contiguous seal such that the contiguous seal comprises a first side seal portion, an opposing second side seal portion, and a top seal portion, an opposing bottom seal portion. The seal portions are connected to form a seal perimeter between the front flexible panel and rear flexible panel thereby forming a receptacle cavity.
  • [0018]
    Each seal portion may be either a hermetic seal or a non-hermetic seal, preferably, a hermetic seal.
  • [0019]
    In another embodiment, the inventive package includes an interior surface of the front flexible panel joined to the interior surface of the rear flexible panel by a plurality of seals comprising a first side seal, an opposing second side seal, and a top seal, an opposing bottom seal. The seals are connected to form a perimeter between the front flexible panel and rear flexible panel thereby forming a receptacle cavity.
  • [0020]
    Preferably, the first side seal extends longitudinally between the peripheral top sedge and the peripheral bottom edge and is positioned proximate to the first peripheral side edge; the second side seal is opposite to the first side seal and extends longitudinally between the peripheral top sedge and the peripheral bottom edge and is positioned proximate to the second peripheral side edge; the top seal extends transversely from the first peripheral side edge to the second peripheral side edge and is positioned proximate to the peripheral top edge; and the bottom seal is opposite to the top seal and extends transversely from the first peripheral side edge to the opposing second peripheral side edge and is positioned proximate to the peripheral bottom edge.
  • [0021]
    Each seal may be either a hermetic seal or non-hermetic seal, preferably, a hermetic seal.
  • [0022]
    In a particular embodiment, the present invention is directed to a thermoformed reclosable package having a reclosable fastener comprising a peelable resealing strip.
  • [0023]
    In another particular embodiment, the present invention is directed to a thermoformed reclosable package having a reclosable fastener comprising a first interlocking member and a second interlocking member. Preferably, the first interlocking member and the second interlocking member are adapted to engage and disengage with each other.
  • [0024]
    In another particular embodiment, the present invention is directed to a thermoformed reclosable package having a reclosable fastener comprising a first interlocking member, a second interlocking member and a slider device. Preferably, the first interlocking member includes an attachment flange. Preferably, the second interlocking member includes an attachment flange.
  • [0025]
    In still another particular embodiment, the inventive package includes a reclosable fastener means comprising a first interlocking member having a attachment flange which is sealed to the interior surface of the front flexible panel, and a second interlocking member having a attachment flange which is sealed to the interior surface of the rear flexible panel.
  • [0026]
    Preferably, the at least one line of structural weakness in the exterior surface of the front flexible panel has a depth which is less than the entire thickness of the front flexible panel.
  • [0027]
    Preferably, the at least one line of structural weakness in the exterior surface of the rear flexible panel has a depth which is less than the entire thickness of the rear flexible panel.
  • [0028]
    Preferably, the taper-evident structure covers a portion of the reclosable fastener means, more preferably, the taper-evident structure covers the entire reclosable fastener means.
  • [0029]
    In yet another particular embodiment, the inventive package includes a frangible seal joining the interior surface of the front flexible panel to the interior surface of the rear flexible panel and extends transversely from the first peripheral side edge to the opposing second peripheral side edge and is positioned below and adjacent to the at least one line of structural weakness in the exterior surface of the front flexible panel and the at least one line of structural weakness in the exterior surface of the rear flexible panel.
  • [0030]
    This disclosure is also directed to a process of manufacturing the reclosable thermoformed packages for containing an article.
  • [0031]
    In one particular embodiment, the present invention is directed to a method comprising dispensing a rear flexible panel from a first roll in which the rear flexible panel comprises a first thermoplastic film; providing a reclosable fastener means; tacking the reclosable fastener means to the interior surface of the rear flexible panel; thermoforming the rear flexible panel; placing an article onto the rear flexible pane; dispensing a front flexible panel from a second roll to cover the article; joining the reclosable fastener means to both the interior surface of the rear flexible panel and the interior surface of the front flexible panel to form a seal perimeter between the front flexible panel and the rear flexible panel thereby defining a receptacle cavity therewithin, such that the seal perimeter includes an aperture adapted to allow the receptacle cavity to communicate with the outside of said package; modifying the atmosphere within the receptacle cavity through said aperture in said seal perimeter; and sealing the aperture of the seal perimeter.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0032]
    FIG. 1 is a partially schematic, front plan view of one embodiment of a thermoformed flexible package according to the present invention with a turned up corner having of a first example of a reclosable fastener means.
  • [0033]
    FIG. 2 is a schematic, cross-sectional view of one embodiment of the thermoformed flexible package taken along line 2-2 of FIG. 1.
  • [0034]
    FIG. 3 is a partially schematic, front plan view of another embodiment of a thermoformed flexible package according to the present invention with a turned up corner having of a second example of the reclosable fastener means.
  • [0035]
    FIG. 4 is a schematic view of one embodiment of a preferred process of manufacturing thermoformed flexible packages according to the present invention.
  • DETAILED DESCRIPTION OF THE INVENTION
  • [0036]
    As used herein, the term “thermoformed” refers to a thermoplastic film or sheet which has been heated until softened and then formed, molded, drawn, or vacuum pulled into a desired shape. In the thermoforming process, a thermoplastic film sheet is fed through an oven and heated to bring it to a thermoformable temperature. The sheet is heated to a softening point and may be either immediately shaped to the desired configuration or advanced to a forming station and then drawn to a predetermined shape. Differential pressure is maintained until the film has cooled.
  • [0037]
    As used herein, the phrase “thermoplastic film” refers to any mono-layer or multilayer polymeric materials that soften when exposed to heat and returns to its original condition when cooled to room temperature. In general, thermoplastic films may include, but are not limited to, natural polymers, biodegradable polymers, and synthetic polymers such as polyolefins, including polyethylenes, polypropylenes, polybutylenes, polyamides, polyesters, ethylene/vinyl alcohol copolymers, polyvinylidene chlorides and the like. Thermoplastic materials may also include any synthetic polymer that are cross-linked by either radiation or chemical reaction during a manufacturing process operation.
  • [0038]
    As used herein, the term “multilayer” refers to a plurality of layers in a single film structure generally in the form of a sheet or web which can be made from a polymeric material or a non-polymeric material bonded together by any conventional means known in the art, i.e., coextrusion, extrusion coating, and lamination, vacuum vapor deposition coating, solvent coating, emulsion coating, or suspension coating or combination of one or more thereof. The multilayer films may include as many layers as desired.
  • [0039]
    As used herein, the term “polymer” refers to the product of a polymerization reaction, and is inclusive of homopolymers and copolymers, including bipolymers, terpolymers, etc. In general, the layers of a film can consist essentially of a single polymer, or can have still additional polymers together therewith, i.e., blended therewith.
  • [0040]
    As used herein, the phrase “structural weakness” refers to perforations, holes, score lines, laser score lines, tear lines, tear strips, cut patterns, and microperforations in a film structure specifically designed to minimize the digital force required to tear apart a portion of a film or sheet and create a predetermined tear path for removal of a portion of the film. It should be understood that the use of the phrase “structural weakness” should include an area of the package that is intentionally designed to be easily torn by the consumer to allow exposure to the reclosable fastener means.
  • [0041]
    As used herein, the terms “joining” and “sealing” are used interchangeably and are defined as directly adhering the subject surface to the object surface using an adhesive, a cold-seal, heat-seal or other means known to those skilled in the art.
  • [0042]
    As defined herein, the term “cold-seal” refers to the union of a surface (or portion thereof) of one film to a surface (or portion thereof) of another film or of two different portions of a surface of the same film by means of an adhesive material.
  • [0043]
    As used herein, the term “heat-seal” refers to the union of a surface (or portion thereof) of one film to a surface (or portion thereof) of another film or of two different portions of a surface of the same film using heat and pressure. The heat-seal is achieved by bringing two surfaces or portions of a surface into contact, or at least close proximity, with one another and then applying sufficient heat and pressure to a predetermined area of the two surfaces to cause the contacting surfaces to become molten and intermix with one another, thereby forming as essentially inseparable fusion bond between the two surfaces in the predetermined area when the heat and pressure are removed therefrom and the area is allowed to cool.
  • [0044]
    As used herein, the phrase “hermetic seal” refers a seal on a container or package that has been completely closed by fusion (heat) or other comparable means so as to prevent any external atmosphere from entering the package through the sealed area.
  • [0045]
    As used herein, the term “tacking” refers to the step of adhering or sealing a surface of one object to a surface of a second object by either fusion (heat) or an adhesive such that the two surface are bonded temporarily. Generally, tacking a surface of one object to another surface of a second object results in a non-hermetic seal.
  • [0046]
    Although the disclosure hereof is detailed and sufficient to enable those skilled in the art to practice the invention, the physical embodiments herein disclosed merely exemplify the invention which may be embodied in other specific structures or methods. While the preferred embodiment has been described, the details may be changed without departing from the invention, which is defined by the claims.
  • [0047]
    The present invention is both a method and a structure resulting from the method. The method of the present invention, while unique and fully described herein, may be used on machinery known to a person of ordinary skill in the art.
  • [0048]
    While reclosable flexible packages using various reclosable fastener means and tamper-evident structures are well known, it is believed that the advantages of the present invention are not apparent from the known reclosable packages of the prior art.
  • [0049]
    Attention is directed to the present invention which will be described hereunder in detail with reference to the accompanying drawings mentioned above, wherein like numerals represent like parts throughout the several views.
  • [0050]
    FIG. 1 is a schematic, front plan view of a thermoformed flexible package of one embodiment of the reclosable fastener means according to the present invention. As shown, package 10 is depicted with a turned up corner comprising a front flexible panel 11 having an interior surface 12 a (See FIG. 2) and an exterior surface 12 b and a rear flexible panel 13 having an interior surface 14 a (See FIG. 2) and an exterior surface 14 b, the latter (i.e., rear flexible panel 13) being thermoformed to provide a receptacle cavity 15 (See FIG. 2) for containing a food or non-food item. The interior surfaces and exterior surfaces of front and rear flexible panels 11 and 13 are relative to the package 10.
  • [0051]
    It should be appreciated by a person of ordinary skill in the art that the front flexible panel 11 may comprises any mono-layer or multilayer thermoplastic film suitable for packaging food and non-food items and should not be limited to any particular film composition. It should also be appreciated by those skilled in the art that the rear flexible panel 13 may be any mono-layer or multilayer thermoplastic film capable of being thermoformed and suitable for packaging food and non-food items. The rear flexible panel 13 may comprise thermoplastics which include, but is not limited to, polyesters, preferably, polyethylene terephthalates, most preferably, non-oriented polyethylene terephthalates, polyamides, preferably, cast polyamides and blends thereof, such as those films described in U.S. patent application Ser. No. 10/237,949 to Schell et al., entitled “Packaging Films Containing Coextruded Polyester And Nylon Layers”, which is expressly incorporated herein by reference.
  • [0052]
    It should also be appreciated by a person of ordinary skill in the art that the mon-layer or multilayer thermoplastic films in view of the present invention and described hereinabove may be provided by conventional film forming processes which include, but are not limited to, for example, extrusion, coextrusion, single- or double-bubble blown film extrusion, cast extrusion, lamination, coating lamination or similar processes or a combination thereof.
  • [0053]
    The depicted package 10 has a first peripheral side edge 16 and opposing second peripheral side edge 17. The first peripheral side edge 16 and opposing second peripheral side edge 17 are connected by a peripheral top side 18 and opposing peripheral bottom side edge 19. It is understood that the terms “top” and “bottom” are relative terms used in respect to package 10 as shown in FIGS. 1-3. It is further understood that package 10 can be oriented in different directions, so that, for example, peripheral top side 18 would not be at the top most portion of the figure but would be positioned else where.
  • [0054]
    Interior surface 12 a (See FIG. 2) of front flexible panel 11 is joined to interior surface 14 a (See FIG. 2) of rear flexible panel 13 by a plurality of seals which include a first side seal 20, an opposing second side seal 21, and a top seal 22, an opposing bottom seal 23. The seals are connected to form a seal perimeter 24 between front flexible panel 11 and rear flexible panel 13 thereby forming a receptacle cavity 15 (See FIG. 2) of package 10. First side seal 20, opposing second side seal 21, and top seal 22, opposing bottom seal 23 may each be a cold-seal or a heat-seal, preferably, a heat-seal, most preferably, a hermetic heat-seal.
  • [0055]
    A reclosable fastener means 25 having a slider device 26 is provided across the top portion of package 10 extending from first peripheral side edge 16 to second peripheral side edge 17. A slider device 26 is mounted on reclosable fastener means 25 to facilitate opening and closing of the reclosable fastener. Suitable reclosable fastener means according to the present invention may include, but are not limited to, those reclosable fastener means having interlocking members, preferably, interlocking members and a slider device. Suitable reclosable fastener means, in general, are known and are taught, for example, in U.S. Pat. Nos. 5,063,644; 5,301,394; 5,442,837; 5,964,532; 6,409,384; 6,439,770; 6,524,002; 6,527,444; 6,609,827; 6,616,333; 6,632,021; 6,663,283; 6,666,580; 6,679,027; and U.S. Patent Application Nos. 2002/0097923; and 2002/0196987, each of which is incorporated by reference herein. It will be noted that the reclosable fastener means is not limited to any particular number of interlocking members and/or slider device structure. It will be appreciated that the reclosable fastener means may be chosen which does not include a slider device and/or interlocking members.
  • [0056]
    Referring to FIG. 1, on the exterior surface 12 b of front flexible panel 11 is at least one line of structural weakness 27 and on the exterior surface 14 b of rear flexible panel 13 is at least one line of structural weakness 28. Formation of the at least one line of structural weakness 27 and 28 may be accomplished by methods disclosed in U.S. Pat. Nos. 3,626,143; 3,909,582; 4,778,058; 4,834,245; 5,001,325; 5,613,779; 5,630,308; and 6,427,420, which are hereby incorporated by reference. It will be appreciated that both at least one line of structural weaknesses 27 and 28 may be provided in a variety of shapes including curves or sinusoidal and may also be provided either continuously or intermittently across exterior surface 12 b of front flexible panel 11 and across exterior surface 14 b of rear flexible panel 13 from first peripheral side edge 16 to second peripheral side edge 17. While at least one line of structural weaknesses 27 may be provided having a depth of the entire thickness of front flexible panel 11 and at least one line of structural weaknesses 28 may be provided having a depth of the entire thickness of rear flexible panel 13 rear flexible panel 13, e.g. by intermittent perforations or slits, it is preferred that each of the at least one line of structural weaknesses has a depth of less than the entire thickness of the panel that it is formed on. It will be appreciated that one or both of the at least one line of structural weakness 27 and 28 may be provided in any length across each panel between from first peripheral side edge 16 to second peripheral side edge 17. It will be understood that each of the at least one line of structural weakness 27 and 28 may positioned in anywhere between top peripheral edge 18 and opposing bottom peripheral edge 19 with the proviso that each of the at least one line of structural weakness is positioned below the reclosable fastener means 25. Package 10 has a tamper-evident structure 29 which is further described below with respect to FIG. 2.
  • [0057]
    FIG. 2 illustrates a cross-sectional view of one embodiment of package 10 taken along line 2-2 of FIG. 1. It should be especially noted that FIG. 2 is a schematic drawing and therefore not to scale having features exaggerated or otherwise dimensioned to facilitate clarity of description. As best seen in FIG. 2, package 10 has a tamper-evident structure 29 having a first portion 30 comprising front flexible panel 11 which extends from the at least one line of structural weakness 27 to the top seal 22 and a second portion 31 comprising rear flexible panel 13 which extends from the structural weakness 28 to the top seal 22. It will be appreciated that tamper-evident structure 29 provides an envelope within which reclosable fastener means 25 (and, if included, slider device 26) reside. It will also be noted that the tamper-evident structure 29 is positioned over reclosable fastener means 25 (and, if included, slider device 26) as a barrier to the reclosable fastener means 25 and slider device 26. It will be also appreciated that to gain access to the receptacle cavity 15 (See FIG. 2), the tamper-evident structure 29 needs to be either partially or entirely removed, thereby further giving a visual indication that the integrity of the package has been compromised. It will be further appreciated that both of the at least one line of structural weaknesses 27 and 28 serve to facilitate the removal of the tamper-evident structure 29.
  • [0058]
    The reclosable fastener means 25 is shown comprising a first interlocking member 32 with an attachment flange 33 and a second interlocking member 34 with an attachment flange 35. It will be appreciated that first and second interlocking members 32 and 34 may each include an attachment flange which may be integral to the first and second interlocking members. As is shown in FIG. 2, the first interlocking member 32 is adhered to the interior surface 12 a of the front flexible panel 11 via attachment flange 33 and the second interlocking member 34 is adhered to the interior surface 14 a of rear flexible panel 13 via attachment flange 35. A receptacle cavity 15 of package 10 is provided between the interior surface 12 a of front flexible panel 11 and the interior surface 14 a of rear flexible panel 13 being delimited by first seal 20 (See FIG. 1), opposing second side seal 21 (See FIG. 1), and top seal 22, opposing bottom seal 23.
  • [0059]
    FIG. 3 is a partially schematic, front plan view of another embodiment of a thermoformed flexible package 10′ according to the present invention with a turned up corner and includes a second example of the reclosable fastener means. Package 10′ is depicted having interior surface 12a of front flexible panel 11′ joined to interior surface 14a of rear flexible panel 13′ by a contiguous seal 36. Contiguous seal 36 includes a first seal portion 37, an opposing second side seal portion 38, and a top seal portion 39, an opposing bottom seal portion 40. The seal portions are connected to form a seal perimeter 24′ between front flexible panel 11′ and rear flexible panel 13′ thereby forming receptacle cavity 15′. Reclosable fastener means 25′ is depicted without a slider device. Reclosable fastener means 25′ may further comprise, if desired, a first interlocking member 32′ (not shown) and a second interlocking member 34′ (not shown) and attachment flanges 33′ and 35′ (both not shown). Reclosable fastener means 25′ is provided across the top portion of package 10′ extending from first peripheral side edge 16′ to second peripheral side edge 17′. Suitable reclosable fastener means of this type, in general, are known to those skilled in the art and have been described in detail in U.S. Pat. Nos. 4,782,951; 4,786,190; 4,823,961; 4,925,316; 5,014,856; and 5,050,736, the disclosures of which are hereby incorporated by reference.
  • [0060]
    Alternatively, the reclosable fastener means may comprise either an adhesive or a peelable resealing strip, both of which are suitable for use in the present invention. These types of reclosable systems, in general, are known to those skilled in the art and are taught in, for example, U.S. Pat. Nos. 3,454,210; 4,415,087; 5,078,509; 5,089,320; 5,172,854; 5,382,472; and 5,882,749, the disclosures of which are hereby incorporated by reference.
  • [0061]
    Referring again to FIG. 3, on the exterior surface 12b of front flexible panel 11′ is at least one line of structural weakness 27′ and on the exterior surface 14b of rear flexible panel 13′ is at least one line of structural weakness 28′. Package 10′ is also depicted as having an optional frangible seal 41. Frangible seal 41 joins the interior surface 12a of front flexible panel 11′ to the interior surface 14a of rear flexible panel 13′ and is provided transversely across from first side seal 20′ to opposing second side seal 21′ disposed adjacent to and below the structural weaknesses 27′ and 28′. Frangible seal 41 may be used to provide an additional tamper-evident feature to packages according to the present invention.
  • [0062]
    FIG. 4 is a schematic view of one embodiment of a preferred process of manufacturing thermoformable flexible packages according to the present invention. The process line progresses from left to right so that the final filled package, such as, for example, package 10 as illustrated in FIG. 1, is at the right side of the figure. Starting at the left-hand side of FIG. 4, rear flexible panel 13 having an interior surface 14 a, an exterior surface 14 b and at least one line of structural weakness 28 (See FIG. 1) in exterior surface 14 b, is dispensed from roll 42. A reclosable fastener means 25 having first interlocking member (See FIG. 2) with attachment flange (See FIG. 2), and second interlocking member (See FIG. 2) with attachment flange (See FIG. 2) is provided from roll 43 and then tacked to the interior surface 14 a of rear flexible panel 13 at point 44. A heating device 45 may be used to soften exterior surface 14 b (underside) of rear flexible panel 13 so that rear flexible panel 13 may be thermoformed at point 46. Next, an article such as a food or non-food item is placed onto rear flexible panel 13 at point 47.
  • [0063]
    The next step of the inventive process is dispensing front flexible panel 11 having interior surface 12 a, exterior surface 12 b and at least one line of structural weakness 27 in exterior surface 12 b from roll 48 to cover the article at point 49. Specifically, front flexible panel 11 is disposed such that the at least one line of structural weakness 27 in exterior surface 12 b is parallel with and, preferably, superimposed over the at least one line of structural weakness 28 in exterior surface 14 b of rear flexible panel 13 as depicted in FIG. 2.
  • [0064]
    Reclosable fastener means 25 is then joined to both interior surface 12 a of front flexible panel 11 and interior surface 14 a rear flexible panel 13 at point 50. Alternatively, if interlocking members 32 and 34 are present as part of the reclosable fastener means 25, then interlocking member 32 is joined to interior surface 12 a of front flexible panel 11 and interlocking member 34 is joined to interior surface 14 a of rear flexible panel 13. Alternatively, if attachment flanges 33 and 35 are present as part of interlocking members 32 and 34, respectively, then reclosable fastener means 24 is secured to package 10 by joining attachment flange 33 to interior surface 12 a and attachment flange 35 to interior surface 14 a as depicted in FIG. 2.
  • [0065]
    Next, at point 51, front flexible panel 11 is joined to rear flexible panel 13 to form a seal perimeter 24 (See FIG. 1) between front flexible panel 11 and rear flexible panel 13 thereby forming a receptacle cavity 15 (See FIG. 2) of package 10. Preferably, seal perimeter 24 is formed such that an aperture 52 (not shown) is formed which is adapted to allow receptacle cavity 15 to communicate with the outside of package 10 Subsequently, at point 53, the atmosphere within receptacle cavity 15 is modified through the aperture 52. Modifying the atmosphere within receptacle cavity 15 may include, for example, but is not limited to, withdrawing the air inside the receptacle cavity and/or flushing the receptacle cavity with nitrogen or argon gas. Finally, aperture 52 is sealed at point 54 which may be performed under vacuum and/or modified-atmosphere conditions.
  • [0066]
    It should be understood that the relative order in which the process steps of the inventive method are carried out may vary such that the step of thermoforming the rear flexible panel may be performed either after the step of dispensing a rear flexible panel and before the step of providing a reclosable fastener means or after the step of tacking the reclosable fastener means to the interior surface of the rear flexible panel.
  • [0067]
    Many modifications and other embodiments of the invention will come to mind to one skilled in the art to which this invention pertains having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the invention is not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (34)

1. A package containing an article, said package comprising:
(a) a front flexible panel comprising a first thermoplastic film, wherein said front flexible panel includes an interior surface and an exterior surface relative to said package;
(b) a rear flexible panel opposing said front flexible panel and comprising a second thermoplastic film, wherein said rear flexible panel includes an interior surface and an exterior surface relative to said package, wherein said second thermoplastic film is thermoformed,
(c) wherein said front flexible panel and said rear flexible panel each have a perimeter having a first peripheral side edge and an opposing second peripheral side edge, connected by a peripheral top edge, and an opposing peripheral bottom edge,
(d) wherein said interior surface of said front flexible panel is joined to said interior surface of said rear flexible panel by either a contiguous seal or a plurality of seals; wherein
(i) said contiguous seal comprises a first side seal portion, an opposing second side seal portion, and a top seal portion, an opposing bottom seal portion, wherein said seal portions are connected to form a seal perimeter between said front flexible panel and said rear flexible panel thereby forming a receptacle cavity;
(ii) said plurality of seals comprises a first side seal, an opposing second side seal, and a top seal, an opposing bottom seal, wherein said plurality of seals are connected to form a seal perimeter between said front flexible panel and said rear flexible panel thereby forming a receptacle cavity;
(e) a reclosable fastener means to provide an entree to said receptacle cavity, wherein said reclosable fastener means is positioned between said interior surface of said front flexible panel and said interior surface of said rear flexible panel;
(f) at least one line of structural weakness in said exterior surface of said front flexible panel extending transversely from said first peripheral side edge to said second peripheral side edge, positioned below and adjacent to said reclosable fastener means;
(g) at least one line of structural weakness in said exterior surface of said rear flexible panel extending transversely between said first peripheral side edge and said second peripheral side edge, positioned below and adjacent to said reclosable fastener means; and
(h) a tamper-evident structure having a first portion comprising said front flexible panel which extends from said at least one line of structural weakness in said exterior surface of said front flexible panel to either said top seal portion or said top seal, and a second portion comprising said rear flexible panel which extends from said at least one line of structural weakness in said exterior surface of said rear flexible panel to either said top seal portion or said top seal.
2. A package containing an article according to claim 1, wherein
(a) said first side seal extends longitudinally between said peripheral top edge and said peripheral bottom edge and is positioned proximate to said first peripheral side edge;
(b) said second side seal is opposite to said first side seal and extends longitudinally from said peripheral top edge to said peripheral bottom edge and is positioned proximate to said second peripheral side edge;
(c) said top seal extends transversely from said first peripheral side edge to said second peripheral side edge and is positioned proximate to said peripheral top edge;
(d) said bottom seal is opposite to said top seal and extends transversely from said first peripheral side edge to said second peripheral side edge and is positioned proximate to said peripheral bottom edge.
3. A package containing an article according to claim 1, wherein said package is hermetically sealed.
4. A package containing an article according to claim 1, wherein said reclosable fastener means comprises a first interlocking member and a second interlocking member.
5. A package containing an article according to claim 4, wherein said first interlocking member of said reclosable fastener means further comprises an attachment flange.
6. A package containing an article according to claim 5, wherein said attachment flange of said first interlocking member is sealed to said interior surface of said front flexible panel.
7. A package containing an article according to claim 4, wherein said second interlocking member of said reclosable fastener means further comprises an attachment flange.
8. A package containing an article according to claim 7, wherein said attachment flange of said second interlocking member is sealed to said interior surface of said rear flexible panel.
9. A package containing an article according to claim 4, wherein said first interlocking member of said reclosable fastener means and said second interlocking member of said reclosable fastener means are adapted to engage and disengage with each other.
10. A package containing an article according to claim 1, wherein said reclosable fastener means further comprises a slider device connected to said first interlocking member and said second interlocking member.
11. A package containing an article according to claim 1, wherein said reclosable fastener means is a peelable resealing strip.
12. A package containing an article according to claim 1, wherein said at least one line of structural weakness in said exterior surface of said front panel has a depth of less than the entire thickness of said front panel.
13. A package containing an article according to claim 1, wherein said at least one line of structural weakness in said exterior surface of said rear panel has a depth of less than the entire thickness of said rear panel.
14. A package containing an article according to claim 1, wherein said tamper-evident structure covers a portion of said reclosable fastener means.
15. A package containing an article according to claim 14, wherein said tamper-evident structure covers the entire said reclosable fastener means.
16. A package containing an article according to claim 1, further comprising a frangible seal joining said interior surface of said front panel to said interior surface of said rear flexible panel and extends transversely from said first peripheral side edge to said second peripheral side edge, and is positioned below and adjacent to said at least one line of structural weakness in said exterior surface of said front flexible panel and at least one line of structural weakness in said exterior surface of said rear flexible panel.
17. A package containing an article according to claim 1, wherein said contiguous seal is a heat-seal.
18. A package containing an article according to claim 1, wherein said plurality of seals are each a heat-seal.
19. A package containing an article according to claim 1, wherein said first thermoplastic film and said second thermoplastic film are the same thermoplastic film.
20. A package containing an article comprising:
(a) a front flexible panel comprising a first thermoplastic film, wherein said front flexible panel includes an interior surface and an exterior surface relative to said package;
(b) a rear flexible panel opposing said front flexible panel and comprising a second thermoplastic film, wherein said rear flexible panel includes an interior surface and an exterior surface relative to said package, wherein said second thermoplastic film is thermoformed;
(c) wherein said front flexible panel and said rear flexible panel each have a perimeter having a first peripheral side edge and an opposing second peripheral side edge, connected by a peripheral top edge, and an opposing peripheral bottom edge,
(d) wherein said interior surface of said front flexible panel is joined to said interior surface of said rear flexible panel by a plurality of seals; wherein said plurality of seals comprises
(i) a first side seal extending longitudinally between said peripheral top edge and said peripheral bottom edge and positioned proximate to said first peripheral side edge;
(ii) a second side seal opposite to said first side seal and extending longitudinally from said peripheral top edge to said peripheral bottom edge and positioned proximate to said second peripheral side edge;
(iii) a top seal extending transversely from said first peripheral side edge to said second peripheral side edge and positioned proximate to said peripheral top edge;
(iv) a bottom seal opposite to said top seal and extending transversely from said first peripheral side edge to said second peripheral side edge and positioned proximate to said peripheral bottom edge;
(v) wherein said plurality of seals are connected to form a seal perimeter between said front flexible panel and said rear flexible panel thereby forming a receptacle cavity;
(e) a reclosable fastener means to provide an entree to said receptacle cavity, wherein said reclosable fastener means is positioned between said interior surface of said front flexible panel and said interior surface of said rear flexible panel and comprises a first interlocking member and a second interlocking member adapted to engage and disengage with each other;
(f) at least one line of structural weakness in said exterior surface of said front flexible panel extending transversely from said first peripheral side edge to said second peripheral side edge, positioned below and adjacent to said reclosable fastener means;
(g) at least one line of structural weakness in said exterior surface of said rear flexible panel extending transversely between said first peripheral side edge and said second peripheral side edge, positioned below and adjacent to said reclosable fastener means; and
(h) a tamper-evident structure having a first portion comprising said front flexible panel which extends from said at least one line of structural weakness in said exterior surface of said front flexible panel to said top seal and a second portion comprising said rear flexible panel which extends from said at least one line of structural weakness in said exterior surface of said rear flexible panel to said top seal.
21. A package containing an article according to claim 20, wherein said first interlocking member of reclosable fastener means further comprises an attachment flange.
22. A package containing an article according to claim 21, wherein said attachment flange of said first interlocking member is sealed to said interior surface of said front flexible panel.
23. A package containing an article according to claim 20, wherein said second interlocking member of reclosable fastener means further comprises an attachment flange.
24. A package containing an article according to claim 23, wherein said attachment flange of second interlocking member is sealed to said interior surface of said rear flexible panel.
25. A package containing an article according to claim 20, wherein said at least one line of structural weakness in said exterior surface of said front flexible panel has a depth of less than the entire thickness of said front flexible panel.
26. A package containing an article according to claim 20, wherein said at least one line of structural weakness in said exterior surface of said rear flexible panel has a depth of less than the entire thickness of said rear flexible panel.
27. A package containing an article according to claim 20, further comprising a frangible seal joining said interior surface of said front panel to said interior surface of said rear panel and extending transversely from said first peripheral side edge to said second peripheral side edge, wherein said frangible seal is positioned below and adjacent to said at least one line of structural weakness in said exterior surface of said front flexible panel and at least one line of structural weakness in said exterior surface of said rear flexible panel.
28. A package containing an article according to claim 20, wherein said plurality of seals are each a heat-seal.
29. A package containing an article according to claim 20, wherein said first thermoplastic film and said second thermoplastic film are the same thermoplastic film.
30. A package containing an article comprising:
(a) a front flexible panel comprising a first thermoplastic film, wherein said front flexible panel includes an interior surface and an exterior surface relative to said package;
(b) a rear flexible panel opposing said front flexible panel and comprising a second thermoplastic film, wherein said rear flexible panel includes an interior surface and an exterior surface relative to said package, wherein said second thermoplastic film is thermoformed;
(c) wherein said front flexible panel and said rear flexible panel each have a perimeter having a first peripheral side edge and an opposing second peripheral side edge, connected by a peripheral top edge, and an opposing peripheral bottom edge,
(d) wherein said interior surface of said front flexible panel is joined to said interior surface of said rear flexible panel by a plurality of seals; wherein said plurality of seals comprises:
(i) a first side seal extending longitudinally between said peripheral top edge and said peripheral bottom edge and positioned proximate to said first peripheral side edge;
(ii) a second side seal opposite to said first side seal and extending longitudinally from said peripheral top edge to said peripheral bottom edge and positioned proximate to said second peripheral side edge;
(iii) a top seal extending transversely from said first peripheral side edge to said second peripheral side edge and positioned proximate to said peripheral top edge;
(iv) a bottom seal opposite to said top seal and extending transversely from said first peripheral side edge to said second peripheral side edge and positioned proximate to said peripheral bottom edge;
(v) wherein said plurality of seals are connected to form a seal perimeter between said front flexible panel and said rear flexible panel thereby forming a receptacle cavity;
(e) a reclosable fastener means to provide an entree to said receptacle cavity, wherein said reclosable fastener means is positioned between said interior surface of said front flexible panel and said interior surface of said rear flexible panel and comprises
(i) a first interlocking member having an attachment flange,
(ii) a second interlocking member having an attachment flange,
(iii) wherein said attachment flange of said first interlocking member is sealed to said interior surface of said front flexible panel,
(iv) wherein said attachment flange of said second interlocking member is sealed to said interior surface of said rear flexible panel,
(v) a slider device connected to said first interlocking member and said second interlocking member,
(vi) wherein said first interlocking member and said second interlocking member are adapted to engage and disengage with each other;
(f) at least one line of structural weakness in said exterior surface of said front flexible panel extending transversely from said first peripheral side edge to said second peripheral side edge, positioned below and adjacent to said reclosable fastener means;
(g) at least one line of structural weakness in said exterior surface of said rear flexible panel extending transversely between said first peripheral side edge and said second peripheral side edge, positioned below and adjacent to said reclosable fastener means; and
(h) a tamper-evident structure having a first portion comprising said front flexible panel which extends from said at least one line of structural weakness in said exterior surface of said front flexible panel to said top seal and a second portion comprising said rear flexible panel which extends from said at least one line of structural weakness in said exterior surface of said rear flexible panel to said top seal.
31. A package containing an article according to claim 30, further comprising a frangible seal joining said interior surface of said front flexible panel to said interior surface of said rear flexible panel and extending transversely from said first peripheral side edge to said second peripheral side edge, said frangible seal is positioned below and adjacent to said at least one line of structural weakness in said exterior surface of said front flexible panel and at least one line of structural weakness in said exterior surface of said rear flexible panel.
32. (canceled)
33. A method of manufacturing a reclosable thermoformed flexible package containing an article comprising:
(a) providing both a front flexible panel and a rear flexible panel,
(i) wherein said front flexible panel comprises a first thermoplastic film, an internal surface and an external surface and at least one line of structural weakness in said external surface,
(ii) wherein said rear flexible panel comprises a thermoformable second thermoplastic film, an internal surface and an external surface and at least one line of structural weakness in said external surface;
(b) dispensing a rear flexible panel from a first roll;
(c) providing a reclosable fastener means;
(d) tacking said reclosable fastener means to said interior surface of said rear flexible panel;
(e) thermoforming said rear flexible panel, wherein said thermoforming of said rear flexible panel is performed either after said dispensing said rear flexible panel from said first roll and before said providing said reclosable fastener means or after said tacking said reclosable fastener means to said interior surface of said rear flexible panel;
(f) placing an article onto said rear flexible panel;
(g) dispensing a front flexible panel from a second roll to cover said article, wherein said front flexible panel comprises;
(h) joining said reclosable fastener means to both said interior surface of said rear flexible panel and to said interior surface of said front flexible panel;
(i) joining said front flexible panel to said rear flexible panel to form a seal perimeter between said front flexible panel and said rear flexible panel thereby defining a receptacle cavity therewithin, such that an aperture is formed in said seal perimeter which is adapted to allow said receptacle cavity to communicate with the outside of said package;
j) modifying the atmosphere within said receptacle cavity through said aperture in said seal perimeter; and
(k) sealing said aperture of said seal perimeter.
34. A package containing an article according to claims 1, 20 or 30, wherein said at least one line of structural weakness in said external surface of both said front flexible panel and said rear flexible panel are each formed by a mechanical cutting device.
US10795476 2004-03-08 2004-03-08 Reclosable thermoformed flexible packages and method of making same Abandoned US20050194282A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10795476 US20050194282A1 (en) 2004-03-08 2004-03-08 Reclosable thermoformed flexible packages and method of making same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10795476 US20050194282A1 (en) 2004-03-08 2004-03-08 Reclosable thermoformed flexible packages and method of making same
EP20050251325 EP1584570A1 (en) 2004-03-08 2005-03-04 Reclosable thermoformed flexible package and method of making same

Publications (1)

Publication Number Publication Date
US20050194282A1 true true US20050194282A1 (en) 2005-09-08

Family

ID=34912467

Family Applications (1)

Application Number Title Priority Date Filing Date
US10795476 Abandoned US20050194282A1 (en) 2004-03-08 2004-03-08 Reclosable thermoformed flexible packages and method of making same

Country Status (2)

Country Link
US (1) US20050194282A1 (en)
EP (1) EP1584570A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7967510B2 (en) 2006-08-08 2011-06-28 Kellogg Company Flexible container for pourable product
US8701919B2 (en) 2010-07-16 2014-04-22 Cascades Canada Ulc Plastic container
WO2015002651A1 (en) * 2013-07-03 2015-01-08 Curwood, Inc. Scored package
US9617048B2 (en) 2011-12-02 2017-04-11 The Hillshire Brands Company Peelable and resealable packaging

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103153803B (en) * 2010-09-21 2015-11-25 艾利丹尼森公司 Supporting the monitoring device having a reclosable vacuum storage bag and method of use

Citations (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626143A (en) * 1969-04-02 1971-12-07 American Can Co Scoring of materials with laser energy
US3909582A (en) * 1971-07-19 1975-09-30 American Can Co Method of forming a line of weakness in a multilayer laminate
US4240241A (en) * 1979-08-09 1980-12-23 W. R. Grace & Co. Method and apparatus for making a reclosable package
US4382513A (en) * 1981-02-06 1983-05-10 W. R. Grace & Co., Cryovac Div. Packages having readily peelable seals
US4481669A (en) * 1978-06-26 1984-11-06 W. R. Grace & Co., Cryovac Div. Multi-walled plastics bag
US4691370A (en) * 1986-04-04 1987-09-01 Talon, Inc. Reclosable bulk material bag with slide fastener
US4778058A (en) * 1987-03-19 1988-10-18 Kabushiki Kaisha Hosokawa Yoko Pouch or sack for packing and laminate film therefor and method for producing the pouch
US4782951A (en) * 1986-03-20 1988-11-08 Oscar Mayer Foods Corporation Reclosable package and method of making reclosable package
US4786190A (en) * 1986-08-11 1988-11-22 Minigrip, Inc. Reclosable package having outer reclosable closure and inner non-reclosable closure
US4823961A (en) * 1986-03-20 1989-04-25 Oscar Mayer Foods Corporation Reclosable package
US4834245A (en) * 1988-08-05 1989-05-30 Kabushiki Kaisha Hosokawa Yoko Pouch having tearing zone for taking out content packed therein
US4919272A (en) * 1984-12-03 1990-04-24 Asahi Chemical Polyflex Easily openable tightly sealed bag
US4925316A (en) * 1986-08-11 1990-05-15 Minigrip, Inc. Reclosable bag having an outer reclosable zipper type closure and inner non-reclosable closure
US5001325A (en) * 1988-09-07 1991-03-19 Lpf Verpakkingen B.V. Method of providing score lines in packaging material
US5014856A (en) * 1986-03-20 1991-05-14 Oscar Mayer Foods Corporation Reclosable package
US5050736A (en) * 1988-07-12 1991-09-24 Oscar Mayer Foods Corporation Reclosable package
US5063069A (en) * 1989-03-23 1991-11-05 Zip-Pak Incorporated Zippered closure for thermoformed package
US5064664A (en) * 1990-04-04 1991-11-12 Oscar Mayer Foods Corporation Package having engraved lettering peel seal tamper-evidence message
US5066543A (en) * 1990-02-28 1991-11-19 Shell Oil Company Film, sheet and laminate capable of forming easy-open packagings
US5074416A (en) * 1990-12-14 1991-12-24 Oscar Mayer Foods Corporation Package with recloseable board seal
US5077064A (en) * 1990-04-04 1991-12-31 Oscar Mayer Foods Corporation Easy-open recloseable peggable package
US5103979A (en) * 1989-10-11 1992-04-14 Oscar Mayer Foods Corp. Package having peel seal tamper-evidence message
US5121997A (en) * 1990-10-09 1992-06-16 Illinois Tool Words Inc. Perforated tear strip for easy-open flexible containers
US5158499A (en) * 1990-07-09 1992-10-27 American National Can Company Laser scoring of packaging substrates
US5180599A (en) * 1991-03-08 1993-01-19 Oscar Mayer Foods Corporation Peelable adhesive-based package seal and method of making same
US5246720A (en) * 1990-03-21 1993-09-21 Buchko Raymond G Reclosable package and method of making same
US5312659A (en) * 1991-06-25 1994-05-17 Toyo Seikan Kaisha Ltd. Laminated film bag for packaging food
US5512337A (en) * 1990-04-04 1996-04-30 American National Can Company Packages with controlled easy open features
US5582853A (en) * 1990-04-05 1996-12-10 Kraft Foods, Inc. Multi-seal recloseable flexible package for displaying thinly sliced food products
US5613779A (en) * 1994-11-30 1997-03-25 Kabushiki Kaisha Hosokawa Yoko Pouch
US5669715A (en) * 1996-08-16 1997-09-23 Tenneco Packaging Tamper-evident reclosable plastic bag with slider
US5783266A (en) * 1994-03-11 1998-07-21 Gehrke; Russ Easy-open individual sealed serving packaging
US5786050A (en) * 1993-01-06 1998-07-28 Toyo Seikan Kaisha, Ltd. Easy opening pouch
US5826737A (en) * 1996-02-20 1998-10-27 Colgate-Palmolive Company Thermoformed reclosable container
US5874155A (en) * 1995-06-07 1999-02-23 American National Can Company Easy-opening flexible packaging laminates and packaging materials made therefrom
US5964532A (en) * 1996-08-07 1999-10-12 Tenneco Packaging Inc. Reclosable fastener strip with tamper evident feature
US6068933A (en) * 1996-02-15 2000-05-30 American National Can Company Thermoformable multilayer polymeric film
US6070723A (en) * 1999-01-11 2000-06-06 Portage Plastics Corp. Reclosable package and method
US6131369A (en) * 1998-10-22 2000-10-17 Illinois Tool Works Inc. Method of applying slider to package having reclosable zipper
US6138439A (en) * 1999-05-21 2000-10-31 Illinois Tool Works Inc. Methods of making slide-zippered reclosable packages on horizontal form-fill-seal machines
US6327837B1 (en) * 1999-07-15 2001-12-11 Illinois Tool Works Inc. Slide-zipper assembly with peel seal and method of making packages with slide zipper assembly
US20020019687A1 (en) * 2000-08-03 2002-02-14 Toyota Jidosha Kabushiki Kaisha Vehicle controller and vehicle control method
US6360513B1 (en) * 1999-05-11 2002-03-26 Sargento Foods Inc. Resealable bag for filling with food product(s) and method
US6372274B2 (en) * 1998-06-22 2002-04-16 Cryovac, Inc. Process for making a packaged product
US6409384B1 (en) * 2000-08-10 2002-06-25 Pactiv Corporation Zipper slider with grab tab
US20020097923A1 (en) * 1999-12-21 2002-07-25 Dobreski David V. Fasteners for reclosable packages with barrier properties
US6427420B1 (en) * 1996-12-31 2002-08-06 Unisabi Method for the manufacture of a laser-precut pack and pack
US6439770B2 (en) * 1999-05-11 2002-08-27 Pactiv Corporation Reclosable bags having a tamper-evident retaining member extending through a slider
US6461043B1 (en) * 2000-05-24 2002-10-08 Colgate Palmolive Company Reclosable bag
US6467956B1 (en) * 2000-04-05 2002-10-22 Reynolds Consumer Products, Inc. Tamper evident package having slider device, and methods
US6474866B2 (en) * 2000-01-18 2002-11-05 Reynolds Consumer Products, Inc. Reclosable package having a zipper closure, slider device and tamper-evident structure
US6479137B1 (en) * 2000-05-09 2002-11-12 Exxon Mobil Oil Corporation Controlled directional tear laminates
US6488972B1 (en) * 1996-07-08 2002-12-03 Cryovac, Inc. Hermetically sealed package, and method and machine for manufacturing it
US6488410B2 (en) * 2001-01-16 2002-12-03 Illinois Tool Works Inc. Tamper-evident reclosable packaging with slide/zipper assembly and header
US6517242B1 (en) * 2001-10-24 2003-02-11 Reynolds Consumer Products, Inc. Reclosable package; and methods
US6524002B2 (en) * 2000-07-31 2003-02-25 Reynolds Consumer Products, Inc. Slider device, packages, and methods
US6527444B1 (en) * 2001-06-15 2003-03-04 Reynolds Consumer Products, Inc. Tamper-evident bag having zipper-protective cover and methods
US6562165B1 (en) * 2000-08-15 2003-05-13 S.C. Johnson Home Storage, Inc. Method for laminating closure member to film web
US6609827B2 (en) * 1998-06-17 2003-08-26 Illinois Tool Works, Inc. Bag having slider-actuated complementary closure strips and a leakproofing structure
US6616333B2 (en) * 2000-09-22 2003-09-09 Kraft Foods Holdings, Inc. Fastener closure arrangement for flexible packages
US20030179955A1 (en) * 2002-03-20 2003-09-25 Rehwinkel Gary E. Reclosable polymeric bags with tamper evident features
US6627695B2 (en) * 2000-02-28 2003-09-30 Mitsubishi Polyester Film Gmbh White, biaxially oriented and UV-resistant polyester film with cycloolefin copolymer (COC), its use and process for its production
US6630237B2 (en) * 2001-02-05 2003-10-07 Cryovac, Inc. Peelably sealed packaging
US20030198407A1 (en) * 2002-03-20 2003-10-23 Rehwinkel Gary E. Reclosable bags with tamper evident features and methods of mking the same
US20030219176A1 (en) * 2002-05-23 2003-11-27 Kraft Foods Holdings, Inc. Flexible package having slider closure
US20030219173A1 (en) * 2002-05-23 2003-11-27 Schneider John H. Tamper-evident package and method to make such a package
US20030231811A1 (en) * 2002-06-07 2003-12-18 Hodson Jay D. Internally scored film, package and methods of making the same
US6666580B2 (en) * 1998-05-05 2003-12-23 Flexico-France Method for producing bags comprising closure profiles actuated by a slider
US6679027B2 (en) * 2000-11-29 2004-01-20 Reynolds Consumer Products, Inc. Resealable closure mechanism having a slider device and methods
US6880973B2 (en) * 2001-09-25 2005-04-19 Illinois Tool Works Inc. Tamper evident reclosable package

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU90952A1 (en) * 2002-08-30 2004-03-01 Amcor Flexibles Europe As Tote Bag

Patent Citations (79)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626143A (en) * 1969-04-02 1971-12-07 American Can Co Scoring of materials with laser energy
US3909582A (en) * 1971-07-19 1975-09-30 American Can Co Method of forming a line of weakness in a multilayer laminate
US4481669A (en) * 1978-06-26 1984-11-06 W. R. Grace & Co., Cryovac Div. Multi-walled plastics bag
US4240241A (en) * 1979-08-09 1980-12-23 W. R. Grace & Co. Method and apparatus for making a reclosable package
US4382513A (en) * 1981-02-06 1983-05-10 W. R. Grace & Co., Cryovac Div. Packages having readily peelable seals
US4919272A (en) * 1984-12-03 1990-04-24 Asahi Chemical Polyflex Easily openable tightly sealed bag
US4823961A (en) * 1986-03-20 1989-04-25 Oscar Mayer Foods Corporation Reclosable package
US4782951A (en) * 1986-03-20 1988-11-08 Oscar Mayer Foods Corporation Reclosable package and method of making reclosable package
US5014856A (en) * 1986-03-20 1991-05-14 Oscar Mayer Foods Corporation Reclosable package
US4691370A (en) * 1986-04-04 1987-09-01 Talon, Inc. Reclosable bulk material bag with slide fastener
US4786190A (en) * 1986-08-11 1988-11-22 Minigrip, Inc. Reclosable package having outer reclosable closure and inner non-reclosable closure
US4925316A (en) * 1986-08-11 1990-05-15 Minigrip, Inc. Reclosable bag having an outer reclosable zipper type closure and inner non-reclosable closure
US4778058A (en) * 1987-03-19 1988-10-18 Kabushiki Kaisha Hosokawa Yoko Pouch or sack for packing and laminate film therefor and method for producing the pouch
US5050736A (en) * 1988-07-12 1991-09-24 Oscar Mayer Foods Corporation Reclosable package
US4834245A (en) * 1988-08-05 1989-05-30 Kabushiki Kaisha Hosokawa Yoko Pouch having tearing zone for taking out content packed therein
US5001325A (en) * 1988-09-07 1991-03-19 Lpf Verpakkingen B.V. Method of providing score lines in packaging material
US5063069A (en) * 1989-03-23 1991-11-05 Zip-Pak Incorporated Zippered closure for thermoformed package
US5103979A (en) * 1989-10-11 1992-04-14 Oscar Mayer Foods Corp. Package having peel seal tamper-evidence message
US5066543A (en) * 1990-02-28 1991-11-19 Shell Oil Company Film, sheet and laminate capable of forming easy-open packagings
US5246720A (en) * 1990-03-21 1993-09-21 Buchko Raymond G Reclosable package and method of making same
US5512337A (en) * 1990-04-04 1996-04-30 American National Can Company Packages with controlled easy open features
US5064664A (en) * 1990-04-04 1991-11-12 Oscar Mayer Foods Corporation Package having engraved lettering peel seal tamper-evidence message
US5878549A (en) * 1990-04-04 1999-03-09 American National Can Company Packages with controlled easy-open features
US5077064A (en) * 1990-04-04 1991-12-31 Oscar Mayer Foods Corporation Easy-open recloseable peggable package
US5582853A (en) * 1990-04-05 1996-12-10 Kraft Foods, Inc. Multi-seal recloseable flexible package for displaying thinly sliced food products
US5158499A (en) * 1990-07-09 1992-10-27 American National Can Company Laser scoring of packaging substrates
US5630308A (en) * 1990-07-09 1997-05-20 American National Can Company Laser scoring of packaging substrates
US5121997A (en) * 1990-10-09 1992-06-16 Illinois Tool Words Inc. Perforated tear strip for easy-open flexible containers
US5074416A (en) * 1990-12-14 1991-12-24 Oscar Mayer Foods Corporation Package with recloseable board seal
US5180599A (en) * 1991-03-08 1993-01-19 Oscar Mayer Foods Corporation Peelable adhesive-based package seal and method of making same
US5312659A (en) * 1991-06-25 1994-05-17 Toyo Seikan Kaisha Ltd. Laminated film bag for packaging food
US5786050A (en) * 1993-01-06 1998-07-28 Toyo Seikan Kaisha, Ltd. Easy opening pouch
US5783266A (en) * 1994-03-11 1998-07-21 Gehrke; Russ Easy-open individual sealed serving packaging
US5613779A (en) * 1994-11-30 1997-03-25 Kabushiki Kaisha Hosokawa Yoko Pouch
US5874155A (en) * 1995-06-07 1999-02-23 American National Can Company Easy-opening flexible packaging laminates and packaging materials made therefrom
US6068933A (en) * 1996-02-15 2000-05-30 American National Can Company Thermoformable multilayer polymeric film
US6562476B2 (en) * 1996-02-15 2003-05-13 Pechiney Emballage Flexible Europe Thermoformable multilayer polymeric film
US5826737A (en) * 1996-02-20 1998-10-27 Colgate-Palmolive Company Thermoformed reclosable container
US6488972B1 (en) * 1996-07-08 2002-12-03 Cryovac, Inc. Hermetically sealed package, and method and machine for manufacturing it
US5964532A (en) * 1996-08-07 1999-10-12 Tenneco Packaging Inc. Reclosable fastener strip with tamper evident feature
US5669715A (en) * 1996-08-16 1997-09-23 Tenneco Packaging Tamper-evident reclosable plastic bag with slider
US6427420B1 (en) * 1996-12-31 2002-08-06 Unisabi Method for the manufacture of a laser-precut pack and pack
US6666580B2 (en) * 1998-05-05 2003-12-23 Flexico-France Method for producing bags comprising closure profiles actuated by a slider
US6609827B2 (en) * 1998-06-17 2003-08-26 Illinois Tool Works, Inc. Bag having slider-actuated complementary closure strips and a leakproofing structure
US6632021B2 (en) * 1998-06-17 2003-10-14 Illinois Tool Works Inc. Bag having slider-actuated complementary closure strips and a leakproofing structure
US6372274B2 (en) * 1998-06-22 2002-04-16 Cryovac, Inc. Process for making a packaged product
US6131369A (en) * 1998-10-22 2000-10-17 Illinois Tool Works Inc. Method of applying slider to package having reclosable zipper
US6070723A (en) * 1999-01-11 2000-06-06 Portage Plastics Corp. Reclosable package and method
US6663283B1 (en) * 1999-05-11 2003-12-16 Pactiv Corporation Reclosable bags having a tamper-evident member extending over a zipper proximate to a slider
US6439770B2 (en) * 1999-05-11 2002-08-27 Pactiv Corporation Reclosable bags having a tamper-evident retaining member extending through a slider
US6360513B1 (en) * 1999-05-11 2002-03-26 Sargento Foods Inc. Resealable bag for filling with food product(s) and method
US6910806B2 (en) * 1999-05-11 2005-06-28 Sargento Foods, Inc. Resealable bag for filling with food product(S) and method
US6138439A (en) * 1999-05-21 2000-10-31 Illinois Tool Works Inc. Methods of making slide-zippered reclosable packages on horizontal form-fill-seal machines
US6327837B1 (en) * 1999-07-15 2001-12-11 Illinois Tool Works Inc. Slide-zipper assembly with peel seal and method of making packages with slide zipper assembly
US20020131653A1 (en) * 1999-12-21 2002-09-19 Dobreski David V. Reclosable packages with barrier properties
US20020097923A1 (en) * 1999-12-21 2002-07-25 Dobreski David V. Fasteners for reclosable packages with barrier properties
US6499878B1 (en) * 1999-12-21 2002-12-31 Pactiv Corporation Reclosable packages with barrier properties
US6474866B2 (en) * 2000-01-18 2002-11-05 Reynolds Consumer Products, Inc. Reclosable package having a zipper closure, slider device and tamper-evident structure
US6572266B2 (en) * 2000-01-18 2003-06-03 Reynolds Consumer Products, Inc. Reclosable package having a zipper closure, slider device and tamper-evident structure
US6627695B2 (en) * 2000-02-28 2003-09-30 Mitsubishi Polyester Film Gmbh White, biaxially oriented and UV-resistant polyester film with cycloolefin copolymer (COC), its use and process for its production
US6467956B1 (en) * 2000-04-05 2002-10-22 Reynolds Consumer Products, Inc. Tamper evident package having slider device, and methods
US6479137B1 (en) * 2000-05-09 2002-11-12 Exxon Mobil Oil Corporation Controlled directional tear laminates
US6461043B1 (en) * 2000-05-24 2002-10-08 Colgate Palmolive Company Reclosable bag
US6524002B2 (en) * 2000-07-31 2003-02-25 Reynolds Consumer Products, Inc. Slider device, packages, and methods
US20020019687A1 (en) * 2000-08-03 2002-02-14 Toyota Jidosha Kabushiki Kaisha Vehicle controller and vehicle control method
US6409384B1 (en) * 2000-08-10 2002-06-25 Pactiv Corporation Zipper slider with grab tab
US6562165B1 (en) * 2000-08-15 2003-05-13 S.C. Johnson Home Storage, Inc. Method for laminating closure member to film web
US6616333B2 (en) * 2000-09-22 2003-09-09 Kraft Foods Holdings, Inc. Fastener closure arrangement for flexible packages
US6679027B2 (en) * 2000-11-29 2004-01-20 Reynolds Consumer Products, Inc. Resealable closure mechanism having a slider device and methods
US6488410B2 (en) * 2001-01-16 2002-12-03 Illinois Tool Works Inc. Tamper-evident reclosable packaging with slide/zipper assembly and header
US6630237B2 (en) * 2001-02-05 2003-10-07 Cryovac, Inc. Peelably sealed packaging
US6527444B1 (en) * 2001-06-15 2003-03-04 Reynolds Consumer Products, Inc. Tamper-evident bag having zipper-protective cover and methods
US6880973B2 (en) * 2001-09-25 2005-04-19 Illinois Tool Works Inc. Tamper evident reclosable package
US6517242B1 (en) * 2001-10-24 2003-02-11 Reynolds Consumer Products, Inc. Reclosable package; and methods
US20030179955A1 (en) * 2002-03-20 2003-09-25 Rehwinkel Gary E. Reclosable polymeric bags with tamper evident features
US20030198407A1 (en) * 2002-03-20 2003-10-23 Rehwinkel Gary E. Reclosable bags with tamper evident features and methods of mking the same
US20030219176A1 (en) * 2002-05-23 2003-11-27 Kraft Foods Holdings, Inc. Flexible package having slider closure
US20030219173A1 (en) * 2002-05-23 2003-11-27 Schneider John H. Tamper-evident package and method to make such a package
US20030231811A1 (en) * 2002-06-07 2003-12-18 Hodson Jay D. Internally scored film, package and methods of making the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7967510B2 (en) 2006-08-08 2011-06-28 Kellogg Company Flexible container for pourable product
US8408793B2 (en) 2006-08-08 2013-04-02 Kellogg Company Flexible container for pourable product
US8701919B2 (en) 2010-07-16 2014-04-22 Cascades Canada Ulc Plastic container
US9617048B2 (en) 2011-12-02 2017-04-11 The Hillshire Brands Company Peelable and resealable packaging
WO2015002651A1 (en) * 2013-07-03 2015-01-08 Curwood, Inc. Scored package

Also Published As

Publication number Publication date Type
EP1584570A1 (en) 2005-10-12 application

Similar Documents

Publication Publication Date Title
US4846585A (en) Easy open bag structure
US5069355A (en) Easy-opening composite closure for hermetic sealing of a packaging container by double seaming
US5174659A (en) Reclosable flexible bag
US6659645B1 (en) Stand-up bag
US6131248A (en) Peelable seal on closure mechanism and method therefor
US3783089A (en) Heat sealed,readily peelable or tearable structure suitable for closures,labels,packaging,etc.
US5806984A (en) Recloseable bag with profile strip fastener assembly
US6412254B1 (en) Resealable package having slider device, tamper-evident structure, and methods of manufacturing
US5050736A (en) Reclosable package
US7322473B2 (en) Plastic packaging with at least one welded knob
US4782951A (en) Reclosable package and method of making reclosable package
US4756629A (en) System for producing non-compatible zipper film
US6302290B1 (en) Container sealing assembly
US5107658A (en) Method of making a reclosable package
US6062467A (en) Dispensing assembly for a lined carton and process and apparatus thereof
US6830377B2 (en) Reclosable packaging with gas barrier incorporated in zipper
US6234675B1 (en) Multicompartment thermoplastic bag
US6519917B2 (en) Method and apparatus for making gussetted package
US6210038B1 (en) Closure arrangement having a peelable seal indicator
US4823961A (en) Reclosable package
US4848928A (en) Package with reclosable fin and method
US5443154A (en) Easy separating package and method
US6371644B1 (en) Reclosable seal, package, method and apparatus
US6270257B1 (en) Reclosable bag with profile strip fastener assembly having improved opening feature
US20060111226A1 (en) Methods of making reclosable packages for vacuum, pressure and/or liquid containment

Legal Events

Date Code Title Description
AS Assignment

Owner name: CURWOOD, INC., WISCONSIN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KRAIMER, AMY L.;HAEDT, EDWARD L.;REEL/FRAME:015059/0441

Effective date: 20040308