WO2015183913A2 - Emballages refermables - Google Patents

Emballages refermables Download PDF

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Publication number
WO2015183913A2
WO2015183913A2 PCT/US2015/032616 US2015032616W WO2015183913A2 WO 2015183913 A2 WO2015183913 A2 WO 2015183913A2 US 2015032616 W US2015032616 W US 2015032616W WO 2015183913 A2 WO2015183913 A2 WO 2015183913A2
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WO
WIPO (PCT)
Prior art keywords
package
score
flexible film
opening
closure layer
Prior art date
Application number
PCT/US2015/032616
Other languages
English (en)
Other versions
WO2015183913A3 (fr
Inventor
Louis Peter FENECH III
Original Assignee
Intercontinental Great Brands Llc
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 Intercontinental Great Brands Llc filed Critical Intercontinental Great Brands Llc
Publication of WO2015183913A2 publication Critical patent/WO2015183913A2/fr
Publication of WO2015183913A3 publication Critical patent/WO2015183913A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5827—Tear-lines provided in a wall portion
    • B65D75/5833—Tear-lines provided in a wall portion for tearing out a portion of the wall
    • B65D75/5838—Tear-lines provided in a wall portion for tearing out a portion of the wall combined with separate fixed tearing means, e.g. tabs

Definitions

  • Reclosable flexible packages are described herein and, in particular, flexible packages having adhesive-based reclosure features.
  • Flexible film packages are well known in the art for storing and shipping products. These flexible film packages can provide a lightweight package with a hermetic seal. A partial or substantial hermetic seal makes such flexible film packages useful for storing a variety of discrete consumer products for extended time periods. Such products can include food products, including crackers, chewing gum, chocolate, cookies, cheese sandwiches, biscuits, candy, meat products, dried fruits and vegetables, and the like. Further, such flexible film packages may be used for non-food applications, such as medical, pharmaceutical, or industrial packaging applications. Depending on the product, some of these flexible film packages also may optionally contain structural supports, such as a frame or tray. Flexible film packages have several advantages. They can be manufactured at substantially lower cost than rigid containers, are lightweight (resulting in lower transportation costs), and can reduce space required for storage.
  • One type of flexible film package can be a single web of material, which is formed or wrapped around a product horizontally or vertically during production. These 'flow-wrap' type packages are formed by enveloping or wrapping the product with the web of material and forming a longitudinal seal, such as a fin, bottom, or lap seal with two edge portions of the web of material. A pair of end seals may then be formed in the web to form and seal the packages. In other embodiments, packages formed from more than a single web of material and with numerous side-seals can be formed. Because these types of packages can provide
  • hermetically sealed enclosures they are suitable for packaging food products and other products requiring protection against contamination by moisture, oxygen, and ambient atmosphere.
  • these types of packages are highly desirable for packing and shipping, consumers sometimes have difficulty opening them to access its contents. For example, consumers often open such packages by grasping two film portions of a package and pulling them apart to rupture one of the seals. In other instances, a consumer may cut the flexible film to create a package opening.
  • neither of the aforementioned package opening methods allows resealing or even reclosing the package.
  • a package reclose or reseal feature is desirable in some instances though. Consumers may not always use all the discrete products within a container on its initial opening.
  • a package may have a reclosable flap covered by a label having exposed adhesive to attach to a surface of the package film.
  • Fold lines e.g., a living hinge
  • laser scoring can be used to define the package flap opening.
  • the reclose feature may provide for product containment or a partial barrier to moisture and gas resulting in a partially hermetic seal.
  • the reclose feature may provide a complete or partial hermetic seal, and may help to retain the shelf-life or freshness of a food product contained within the package.
  • Flexible packages having label based reclose features may also include adhesive-free or adhesive-deadened tabs on the label to allow a user to manually grasped and lift the label to gain access to the package contents.
  • Reclosable flexible packages are described herein and, in particular, flexible packages having adhesive-based reclosure features.
  • the packages described herein can be advantageously manufactured from a single portion of material, such as a web of flexible film.
  • the material can be scored with one or more lines of weakness to define one or more package openings.
  • the packages described herein may include easy open flexible slug or flow-wrap film type packages, which can have an initial seal against ambient atmosphere (e.g., a gas/oxygen and moisture barrier) for extended periods of time and have a pressure sensitive closure layer (label) laminated above a continuous score (tear) line in the flow-wrap film, which can provide a package opening.
  • the embodiments can be easily opened and reclosed or resealed, while maintaining package integrity.
  • the embodiments can also maintain an opening to allow clean hand-to-mouth product access.
  • the packages described herein include an easily removable closure layer attached thereto, which can be partially removed (Fig. 2) or even completely peeled off (Fig. 3) in order to provide a reclose or reseal label by either recovering the opening or by reclosing the package as a tack down strip.
  • a tack down strip the consumer can roll down or fold the package film portion having the opening as the product is eaten or removed and applying the label to portions of the package to keep the package from opening.
  • the packages described herein may have three distinct closed configurations.
  • the package may be configured in a second, reclosed or resealed configuration where the closure label or layer is reapplied onto its original, or nearly original position, above the opening formed by a score line.
  • the package also may be configured in a third, reclosed configuration where the label is completely separated or removed from its original position on the package and reapplied to the package in an entirely different position and used as an adhesive label to retain the package in its third closed configuration.
  • a package can include a flexible film forming a body having an initial configuration defining an interior contents cavity and having a first pair of opposing edge portions forming a first end seal, a second pair of opposing edge portions forming a second end seal, and a third pair of opposing edge portions forming a longitudinal seal extending from the first end seal to the second end seal; a continuous score formed in the flexible film defining an opening to the contents cavity upon initial rupturing and subsequent package opening; a removably attached closure layer covering the score and extending over a portion of the body on unsealed portions of the flexible film; a pressure sensitive adhesive disposed between the closure layer and the flexible film; the closure layer having a tack free gripping portion to facilitate removal of the closure layer from the flexible film and to rupture the continuous score upon initial removal and form an opening; and the closure layer being multifunctional, having a first function to reclose the opening by covering the opening and a second function as an adhesive strip to tack down portions of the body deformable to
  • the pressure sensitive adhesive can have a predetermined affinity between the closure layer and the flexible film such that the score ruptures upon removal of the closure layer.
  • the body is deformable to cover the opening by a fold of the flexible film over the opening.
  • the body is deformable to cover the opening by rolled flexible film over the opening.
  • the closure layer can extend transverse to the longitudinal seal and the continuous line can be curvilinear.
  • the longitudinal seal may be a fin or lap seal.
  • the continuous score can have four radiused right angles having a radius in the range of 1 to 8 mm, and preferably about 4 mm (e.g., 4 mm).
  • the score and closure layer can be closer to the first end seal than the second end seal.
  • the score can extend no more than 50 percent of a circumference of the package.
  • the score can extend to no more than 50 percent of a circumference of the package transverse to the longitudinal seal.
  • a continuous score forms a closed-loop such that a portion of the film into which the continuous score is formed defines a panel that can be easily and completely detached from a remainder of the flexible film.
  • a package can include a flexible film forming a body having an initial configuration defining an interior contents cavity; a score formed in the flexible film defining an opening to the contents cavity upon initial rupturing; a removably attached closure layer covering the score and extending over a portion of the body; a pressure sensitive adhesive disposed between the closure layer and the flexible film; and the closure layer having a function as an adhesive strip to tack down portions of the body, the body deformable to cover the opening as interior contents are removed.
  • the flexible film can be a laminate structure.
  • One exemplary laminate structure can include an oriented polypropylene layer having a thickness in a range of 11 microns to 18 microns, preferably about 15 microns (e.g., 15 microns) laminated to a metalized bi-axially oriented polypropylene layer having a thickness in a range of 11 microns to 18 microns, preferably about 15 microns (e.g., 15 microns).
  • Another exemplary laminate structure can include a layer of polyethylene terephthalate having a thickness in a range of 10 microns to 14 microns, preferably about 12 microns (e.g., 12 microns) laminated to a bi-axially oriented polypropylene having a thickness in a range of 10 microns to 20 microns, preferably about 15 microns to about 17 microns (e.g., 15 microns to about 17 microns).
  • the laminate structure can also include an ink and primer layer disposed between the oriented polypropylene layer and the metalized bi-axially oriented polypropylene layer.
  • the flexible film can be metalized cast polypropylene. More specifically, this form can include a flexible film having a total thickness in a range of 10 microns to 20 microns, preferably about 15 microns (e.g., 15 microns) and have a vacuum metalized cast polypropylene.
  • the closure layer can be a bi-axially oriented polypropylene having a thickness in a range of about 12 microns to 50 microns (e.g., 12 microns to 50 microns), corresponding to about 12 microns to 2 mils.
  • the closure layer can be a clear bi-axially oriented polypropylene in a range of about 12 microns to 20 microns (e.g., 12 microns to 20 microns).
  • the closure layer can dimensioned to extend in the range of about 3 mm to 40 mm (e.g., 3 mm to 40 mm) beyond the continuous score, preferably in the range of about 5 mm to 20 mm (e.g., 5 mm to 20 mm), and most preferably about 8 mm (e.g., 8 mm).
  • a package in another form, can include a flexible film forming a body having an initial configuration defining an interior contents cavity and having a first pair of opposing edge portions forming a first end seal, a second pair of opposing edge portions forming a second end seal, and a third pair of opposing edge portions forming a longitudinal seal extending from the first end seal to the second end seal; a score formed in the flexible film defining an opening to the contents cavity upon initial rupturing and subsequent package opening; a removably attached closure layer covering the score and extending over a portion of the body on unsealed portions of the flexible film; a pressure sensitive adhesive disposed between the closure layer and the flexible film; and the closure layer being multifunctional, having a first function to reclose the opening by covering the opening and a second function as an adhesive strip to tack down portions of the body deformable to cover the opening in a second configuration as interior contents are removed.
  • the score can be curvilinear.
  • a second score can be provided forming a first pair of
  • a blank to form a package can include a continuous web of flexible film having a width and a longitudinal axis; at least one discrete closure layer applied to a portion of the continuous web of flexible film and along the longitudinal axis with pressure sensitive adhesive; and the continuous web and the at least one continuous closure layer configured to be formed into a series of identical package forming blanks, the flexible film of each identical package forming blank having a score formed therein that coincides with at least a portion of the closure layer and that subsequently forms a package opening when ruptured upon initial opening and the discrete closure layer is removed.
  • the blank can have at least one discrete closure layer that is a bi-axially oriented polypropylene having a thickness in a range of about 12 microns to 50 microns (e.g., 12 microns to 50 microns); and the continuous web of flexible film can be a laminate of an oriented polypropylene layer having a thickness in a range of about 1 1 microns to 18 microns, (e.g., 1 1 microns to 18 microns), preferably about 15 microns (e.g., 15 microns) laminated to a metalized bi-axially oriented polypropylene layer having a thickness in a range of about 1 1 microns to 18 microns (e.g., 11 microns to 18 microns).
  • a bi-axially oriented polypropylene having a thickness in a range of about 12 microns to 50 microns (e.g., 12 microns to 50 microns)
  • the continuous web of flexible film can be a laminate of
  • FIG. 1 illustrates a front perspective view of an exemplary package having a removable closure layer in a closed position
  • FIG. 2 illustrates a front perspective view of the package of FIG. 1 with the closure layer in a partially open position
  • FIG. 3 illustrates a perspective view of the package of FIG. 1 in an open position with the closure layer being fully detached along the line of weakness from the package body;
  • FIG. 4 illustrates a front perspective view of the package of FIG. 1 with the closure layer tacked onto a folded and rolled portion of the package film covering the package opening and to the package body;
  • FIG. 5 illustrates a top elevational view of the package of FIG. 1 ;
  • FIG. 6 illustrates a bottom elevational view of the package of FIG. 1 ;
  • FIG. 7 illustrates a front elevational view of the package of FIG. 1 ;
  • FIG. 8 illustrates a rear elevational view of the package of FIG. 1 ;
  • FIG. 9 illustrates a left side elevational view of the package of FIG. 1 ;
  • FIG. 10 illustrates a right side elevational view of the package of FIG. 1 ;
  • FIG. 11 illustrates a cross-section of the package of FIG. 5 taken along line XI-XI thereof;
  • FIG. 12 illustrates an expanded view of area XII of FIG. 11 thereof
  • FIG. 13 illustrates a front perspective view of another exemplary package having a removable closure layer in a closed position
  • FIG. 14 illustrates a front perspective view of another exemplary package having a removable closure layer in a closed position
  • FIG. 15 illustrates a front perspective view of another exemplary package having a removable closure layer in a closed position
  • FIG. 16 illustrates a front perspective view of another exemplary package having a removable closure layer in a closed position
  • FIG. 17 illustrates a front perspective view of the package of FIG. 16 with the closure layer in a partially open position
  • FIG. 18 illustrates a front perspective view of another exemplary package having a removable closure layer in a closed position
  • FIG. 19 illustrates a front perspective view of the package of FIG. 18 with the closure layer tacked onto a folded and rolled portion of the package film, which portion is covering the package opening, and to the package body;
  • FIG. 20 illustrates a front perspective view of another exemplary package having a removable closure layer in a closed position
  • FIG. 21 illustrates a front perspective view of another exemplary package having a removable closure layer in a closed position
  • FIG. 22 illustrates a front perspective view of another exemplary package having a removable closure layer in a closed position
  • FIG. 23 illustrates a front perspective view of another exemplary package having a removable closure layer in a closed position
  • FIG. 24 illustrates a front perspective view of another exemplary package having a removable closure layer in a closed position
  • FIG. 25 illustrates a front perspective view of another exemplary package having a removable closure layer in a closed position
  • FIG. 26 illustrates a front perspective view of another exemplary package having a removable closure layer in a closed position
  • FIG. 27 illustrates a front perspective view of the package of FIG. 26 with the closure layer in a partially open position
  • FIG. 28 illustrates a top plan view of an exemplary sheet of material, which can be part of a larger web of material that can be used to form the package of FIG. 1 ;
  • FIG. 29 illustrates a portion of a cross-section of the exemplary sheet of material of FIG. 28 taken along line XXIX-XXIX thereof;
  • FIG. 30 illustrates a top plan view of an exemplary sheet of material, which can be part of a larger web of material that can be used to form the package of FIG. 26;
  • FIG. 31 illustrates a portion of a cross-section of the exemplary sheet of material of FIG. 30 taken along line XXI-XXI thereof.
  • Reclosable flexible packages are described herein and, in particular, flexible packages having adhesive-based reclosure features.
  • the packages described herein can be advantageously manufactured from a single portion of material, such as a web of flexible film.
  • the material can be scored with one or more lines of weakness to define one or more package openings.
  • flow-wrapped or slug packages having a cut or scored window covered beyond its periphery by a removably attached closure layer (e.g., an adhesive label).
  • a removably attached closure layer e.g., an adhesive label
  • the adhesive label can be partially peeled upward from the flexible film with a portion or panel of the flexible film forming an opening or a window in the flexible film to expose the package interior.
  • the label's exposed adhesive can subsequently be used to cover the opening such that the closure layer is applied onto its original or nearly original
  • the label and the panel adhered together can be completely removed from the package.
  • a user can roll down (or fold) an end of the slug package as product is removed and utilize the exposed adhesive of the removed closure label to tack down the rolled (folded) end.
  • the reclosable packages described herein solve the problem of, for example, typical slug type packages being difficult to open, since the consumer normally has to open the package through an end seal, which can be difficult and cause tearing.
  • the present packages also provide the consumer with a number of closure configurations including the ability to roll down the package to make it smaller as they consume the product.
  • Another advantage of the present packages is the greater design flexibility in the shape and size of the opening. Labels disposed on reclosable packages typically remain at least partially attached to the package, even after initial opening. Such packages are reclosed via closure of a panel and the label and thus could limit the size of the opening and type of film material to maintain package integrity. For example, an extremely large label and panel could make reapplying the label after initial opening over the large opening quite difficult. This would be especially true as more contents are removed and the package changes its original shape.
  • the package opening can be considerably larger and/or the film considerably thinner than known in the art.
  • Another advantage of the present packages is the potential to produce a series of blanks to produce the present packages on existing flow-wrap or slug-wrap packing equipment without modification.
  • the packages described herein may have at least a partial, initial seal against ambient atmosphere and are easily openable and reclosable. More particularly, the initial seal, which is present prior to initial opening of the flexible film package, may provide at least a partial barrier against ambient atmosphere including gas and moisture for an extended period of time. For example, the initial seal of the flexible film package may provide a light barrier and also a gas and moisture barrier for at least 6 to 8 months prior to initial opening. In some applications, a gas and moisture barrier may be desired for even longer periods of time prior to initial opening.
  • the flexible film packages are generally resealable or reclosable such that the shelf-life of food products contained therein is not unnecessarily shortened due to exposure to the ambient atmosphere once the flexible film package is initially opened, or to at least provide for product containment.
  • the flexible film packages may have a reseal feature that provides a reclosable seal that is present subsequent to initial opening of the package. While the present disclosure is described for food product applications, it also can be applied to nonfood, medical, pharmaceutical, industrial packaging applications and the like.
  • the flexible film package is generally configured to accommodate multiple servings of a food product.
  • the reclose characteristics of the flexible film package can help to contain product after initial opening and/or to retain freshness or shelf-life of product remaining within the package subsequent to initial opening.
  • the use of the label as a tack down strip further allows the package to decrease in size as product is removed.
  • the seals of the flexible film package such as any longitudinal seals, including, for example, a fin or lap seal, and any end seals may be hermetic (and also may have varying degrees of hermeticity, such as partial or substantial hermetic seals) to help retain the shelf-life of any food products contained therein.
  • the seals may be formed by a variety of processes, such as, for example, hot seal, cold seal, low tack seal, sonic waves, and combinations thereof.
  • Any reclosable seals of the flexible package such as that formed around the package opening, may be formed, in part, by a pressure sensitive adhesive located between the flexible film and an the elongated closure layer. This reclosable seal feature may be formed by a variety of manufacturing processes.
  • the flexible film packages may have a variety of configurations, including, for example, a bag (including a gusseted bag), a pouch, three-sided seal and four-sided seal flexible packages, and in a variety of shapes, such as a cylindrical-shape, a column-shaped, or a rectilinear-shape, among others.
  • the flexible film package may have squared edges, such as that found on a primarily rectilinear-shaped package, or may have more curvilinear-shaped edges, such as that found on more circular or ovoid-shaped packages.
  • the flexible film package may be formed around the food product, such as a package having a sleeve configuration, which is wrapped around a discrete stack or stacks of food products.
  • the flexible film packages may be fully or partially formed and then filled with the food products, which may be helpful for various discrete food products.
  • the various configurations may be easily opened and resealed while maintaining package integrity.
  • the flexible film forms a slug- package having two end seals and one longitudinal seal.
  • the package has two opposing edge portions that meet to form a longitudinal seal extending from a first end seal (e.g., leading end seal) to a second end seal (e.g., trailing end seal).
  • the flexible film has a score that defines a package opening upon initial rupture or initial opening.
  • a closure layer ("label") generally extends over the score on the flexible film.
  • a pressure sensitive adhesive may be located between the flexible film and the elongated closure layer to laminate the two.
  • the elongated closure layer may have a tack-free gripping portion used to grab, pull, and release at least a portion of the elongated closure layer or label from the flexible film and the panel of flexible film adhered thereto to form the package opening.
  • the flexible film packages described herein include a score that defines a package opening upon initial rupture or initial opening of the package.
  • the term "score" as used herein may describe any type of mechanically-formed or cut score line, a laser-formed score, or any other scoring means that would compromise the integrity of the film without rupturing it (i.e., a line of weakness).
  • a score may be disposed partially through the depth of the flexible film, or it may be a cut through the entire depth of the film over a given line. If partially cut through the film, the score also may be formed on either side of the flexible film such that the score may be cut into the exterior or interior surface of the flexible film.
  • the score can be formed into the flexible film from the interior surface of the flexible film and extends through the flexible film and substantially through the pressure sensitive adhesive.
  • the score is added to the side of the film directed to the interior of the package.
  • the score may also be a discontinuous line such as a set of perforations, which also may be either partially through the depth of the flexible film or completely through the entire depth of the flexible film.
  • Score lines can include a multitude of configurations to suit desired packaging and product specifications.
  • score line in many of the figures described below form a continuous line and can be curvilinear.
  • the continuous line can have four radiused right angles having a radius in the range of 1 to 8 mm, and preferably about 4 mm (e.g., 4 mm). It is noted though that several score configurations are possible within the scope of the present designs.
  • film the score line allows a user access to product contained within the package.
  • package product can include cookies, confectioneries, crackers, chewing gum, chocolate bars, wrapped candy, particulate products (e.g., coffee), and the like.
  • Score line can be of various depths and widths within film and can be formed by various cutting means such as the use of a laser or die cutter.
  • the tear strength of score line must be at least weaker than the adhesive strength of a pressure sensitive adhesive (PSA) between the film and the label to allow the film window to peel back with label.
  • PSA 54 can be configured to have an opening (separating) force of 350 gms/inch and a closing (adhering) force of 200 grams/inch. It is noted though that other opening and closing force ranges would be considered to fall within the scope of the presented package design.
  • the pressure sensitive adhesive can have a predetermined affinity between the closure layer and the flexible film such that the score ruptures upon removal of the closure layer.
  • score line only goes through a portion of the package to not affect the barrier properties (e.g., gas or moisture) of the package.
  • label 26 would not need to provide the initial hermetic barrier, though optionally and inherently, it can.
  • the optional label barrier properties could result from inherent characteristic of the label material, or through an added barrier layer to label. It is noted that even in embodiments where score can affect barrier qualities of film, the application of label should compensate for the compromised barrier created by the score where the entire scored portion of film is covered by label.
  • the score can form an opening to extend no more than 50 percent of a circumference of the package. In one embodiment, the score can extend to no more than 50 percent of a circumference of the package transverse to its longitudinal seal.
  • the score can extend to no more than 50 percent of a circumference of the package transverse to its longitudinal seal.
  • PIFs package integrity features
  • the closure layer of the package is disposed on the flexible film over the score.
  • the closure layer can be a label such as a label with a backing, a release liner or a linerless label. Though a linerless label may be similar to tape, a linerless label oftentimes requires additional printing.
  • the closure layer may include a second flexible film with pressure sensitive adhesive disposed between the flexible film and the second flexible film. As discussed below (See, e.g., FIGS. 26-27, and 30-31), the pressure sensitive adhesive may be an interstitial layer to a laminated film structure such that the pressure sensitive adhesive is laminated between the flexible film and the second flexible film layers.
  • the closure layer may be transparent, opaque, or optionally printed.
  • the closure layer may include any of a variety of flexible or semi-rigid polymers such as, for example, an oriented polypropylene (OPP), including a bi-axial OPP, a polyethylene terephthalate (PET) layer.
  • OPP oriented polypropylene
  • PET polyethylene terephthalate
  • the continuous closure layer may have a thickness about in the range of about 1.2 mil to 5 mil a preferably about 2 mil.
  • PET may be desirable because of its thermal resistance in creating non-peelable seals.
  • the closure layer may be applied to cover at least the score line. Further, the closure layer preferably extends beyond the score line to provide sufficient marginal region around the score to effectively reseal the package opening once the score has been initially opened or ruptured. Also, the closure layer extends beyond the score line to all its function as a tack-down strip.
  • Linerless labels can be a face stock having a pressure sensitive adhesive coating on one side but can be rolled into a spool without a liner. This can be accomplished by a release coating applied to the side opposite the adhesive coating or in the alternative a homo-polymer such as polypropylene. Face stocks can include standard paper, film, plastic, fabric, foil, direct thermal, and the like. Linerless labels are available with removable and repositionable adhesives. Alternatively, an adhesive covered flexible film can be used for label 26.
  • the closure layer can extend transverse to the longitudinal fin seal and the continuous line can be curvilinear. Score and closure layer can be closer to the first end seal than the second end seal.
  • the closure layer can be a bi-axially oriented polypropylene having a thickness in a range of about 12 microns to 50 microns (e.g., 12 microns to 50 microns), corresponding to about 12 microns to 2 mils.
  • the closure layer can be a clear bi-axially oriented polypropylene in a range of about 12 microns to 20 microns (e.g., 12 microns to 20 microns).
  • the closure layer can dimensioned to extend in the range of about 3 mm to 40 mm (e.g., 3 mm to 40 mm) beyond the continuous score, preferably in the range of about 5 mm to 20 mm (e.g., 5 mm to 20 mm), and most preferably about 8 mm (e.g., 8 mm).
  • the closure layer preferably has an adhesive free portion to form a peel tab.
  • This adhesive free area can be formed by UV light deactivation, covering the adhesive portion with an additional layer of non-adhesive material, simply not applying adhesive to that portion of the label during manufacture, and the like.
  • the width of the tab preferably has a depth in the peel direction in the range of 3 mm to 40 mm, with about 10 mm (e.g., 10 mm) preferable. Any number of configurations are possible, such as radial tab shown in the figures, so long that it can provide a finger grip to initiate opening of the package.
  • the pressure sensitive adhesive (PSA) between the flexible film and the closure layer helps produce the reclosing characteristics of the package opening.
  • the pressure sensitive adhesive is preferably neutral or non-reactive to the product to be packaged.
  • the pressure sensitive adhesive may be suitable for reseating in a variety of conditions, such as ambient and refrigerated conditions, to note but a few.
  • the pressure sensitive adhesive may provide a partial hermetic seal even in refrigerated conditions (i.e., the pressure sensitive adhesive can be operable in a temperature range of about -10 to 90 degrees Celsius; and preferably in the range of about 2 to 7 degrees Celsius).
  • the pressure sensitive adhesive may be applied directly to the film but also may be applied to ink or another coating on the film. By one approach, the pressure sensitive adhesive remains attached to the closure layer, even after the closure layer is repeatedly opened and reclosed.
  • the film forming the package body of the packages described herein can be a flexible sheet material rolled or formed as a blank and made of laminate or co-extruded film structures, with cast or blown film layers, and the like. Examples can include a single layer polymer, such as polypropylene, polyethylene, polylactic acid (PLA), polyester, and the like. Film thickness also can be a function of the desired barrier to gas, moisture, and light; level of desired structural integrity, and the desired depth of the score line (described below).
  • the film can be a heat sealable copolymer, in some embodiments, the heat sealable polymer forms a seal between 50 and 300 degrees Celsius.
  • the film also can be a pressure sealing film (e.g., a cold seal film or otherwise where no heat is needed). In some
  • this pressure sealing film forms a seal between a pressure of about 0.7 and 7.0 Kg/cm, and preferably at about 5.6 Kg/cm.
  • the film can preferably be a 1.2 to 5 mils laminate, such as a polyethylene terephthalate (PET) layer and an oriented polypropylene (OPP) layer, or optionally be a single layer polymer.
  • PET polyethylene terephthalate
  • OPP oriented polypropylene
  • the PET layer can have a thickness in the range of about 0.4 to 1.0 mill (preferably about 0.48 mil) and the OPP layer can have a thickness in the range of about 0.6 to 1.2 mil (preferably about 0.7 mil).
  • a PET layer is flexible to semi-rigid, depending on its thickness. PET is preferred in that it is very lightweight, strong, and can have high transparency when desired for package specifications. It also can be useful as an oxygen (gas) and moisture barrier.
  • the OPP layer can add further strength and be a further barrier to permeability. Lamination components can be joined by adhesives or by extrusions.
  • the film can optionally have additional laminate layers.
  • a sealant layer (not shown) can be added to facilitate the formation of seals that enclose product during packaging. As such, the sealant layer would be oriented on the film surface directed to the interior of the package.
  • the sealant layer can be a variety of polymer sealants, such as a heat activated polymer sealant layer like ethylene vinyl acetate (EVA), ionomer plastic (such as one sold under the trade name SURLYN by DuPont), metallocene, organoclay, and the like. Cold sealant and pressure sealants are also possible within the scope of the presented embodiments. It is noted that food grade sealants would be used when food products are anticipated.
  • stiffeners can be added to the flexible film to increase the stiffness of the film. These stiffeners may be in addition to the stiffness adjustments that can be made by changing the thicknesses or densities of the previously mentioned laminate layers. These stiffeners can be added as a component of the extruded film or as a separate layer.
  • a laminate layer such as a polyamide polymer (e.g., nylon) may be included in the laminate film structure of flexible film web.
  • nylon may be added as a laminate layer that is held to the remainder of the film structure by an adhesive.
  • the nylon layer may be positioned in between other layers such that the other flexible film layers are attached on each side of the nylon layer (i.e., a tie layer).
  • the nylon layer can comprise about 6 to 10 percent of the film thickness or about 0.004 mm.
  • the nylon layer comprises about 8 percent of the film thickness.
  • the nylon layer may comprise about 0.004mm thick layer.
  • Optional film layers also can include ink layers.
  • one specific laminate can include ink and a primer disposed between a PET and OPP layer.
  • Package integrity features also can be included.
  • Metalized layers and various combinations of laminates are also possible within the preferred embodiments.
  • the film can be a laminate such as a polyethylene terephthalate (PET) layer and an oriented polypropylene (OPP) layer, or optionally the film can be a single layer polymer.
  • PET polyethylene terephthalate
  • OPP oriented polypropylene
  • a PET layer is flexible to semi-rigid, depending on its thickness. PET is often preferred in that it is very lightweight, strong, and can have high transparency when desired for package specifications. It also can be useful as an oxygen (gas) and moisture barrier.
  • the OPP layer can add further strength and be a further barrier to permeability.
  • Lamination components can be joined by adhesives or by extrusions.
  • Optional film layers also can include ink layers.
  • one specific laminate can include ink and a primer disposed between a PET and OPP layer. Metalized layers and various combinations of laminates are also possible within the preferred embodiments.
  • Additional laminate layers can include a sealant layer, such as a heat sealant layer to facilitate the formation of seals that enclose product during packaging.
  • a sealant layer such as a heat sealant layer to facilitate the formation of seals that enclose product during packaging.
  • the sealant layer would be oriented on the film surface directed to the interior of the package.
  • the sealant layer can be a variety of polymer sealants such as a heat activated polymer sealant layer like ethylene vinyl acetate (EVA), ionomer plastic (such as one sold under the trade name SURLYN by DuPont), metallocene, organoclay, and the like.
  • EVA ethylene vinyl acetate
  • ionomer plastic such as one sold under the trade name SURLYN by DuPont
  • metallocene organoclay
  • Cold sealant and pressure sealants are also possible within the scope of the presented embodiments. It is noted that food grade sealants would be used when food products are anticipated.
  • a laminate structure for the film can be an oriented polypropylene layer having a thickness in a range of 11 microns to 18 microns, preferably about 15 microns (e.g., 15 microns) laminated to a metalized bi-axially oriented polypropylene layer having a thickness in a range of 11 microns to 18 microns, preferably about 15 microns (e.g., 15 microns).
  • Another exemplary laminate structure can include a layer of polyethylene
  • these laminate structures can also include an ink and primer layer disposed between the oriented polypropylene layer and the metalized bi-axially oriented polypropylene layer.
  • the flexible film can be metalized cast polypropylene. More specifically, this form can include a flexible film having a total thickness in a range of 10 microns to 20 microns, preferably about 15 microns (e.g., 15 microns) and have a vacuum metalized cast polypropylene.
  • a package can include a flexible film forming a body defining an interior contents cavity and having a first pair of opposing edge portions forming a first end seal, a second pair of opposing edge portions forming a second end seal, and a third pair of opposing edge portions forming a longitudinal fin seal extending from the first end seal to the second end seal; a continuous score formed in the flexible film defining an opening to the contents cavity upon initial rupturing and subsequent package opening; a removably attached closure layer covering the score and extending over a portion of the body on unsealed portions of the flexible film; a pressure sensitive adhesive disposed between the closure layer and the flexible film; the closure layer having a tack free gripping portion to allow removal of the closure layer from the flexible film and to rupture the continuous score and form an opening by permitting a portion of the flexible film to be separated from the remainder of the flexible film; and the closure layer being multifunctional, having a first function to reseal or
  • a package can include a flexible film forming a body defining an interior contents cavity and having a first pair of opposing edge portions forming a first end seal, a second pair of opposing edge portions forming a second end seal, and a third pair of opposing edge portions forming a longitudinal fin seal extending from the first end seal to the second end seal; a score formed in the flexible film defining an opening to the contents cavity upon initial rupturing; a removably attached closure layer covering the score and extending over a portion of the body on unsealed portions of the flexible film; a pressure sensitive adhesive disposed between the closure layer and the flexible film; and the closure layer being multifunctional, having a first function to reseal or reclose the opening over the score line and a second function as an adhesive strip to tack down portions of the body, the body being deformable to cover the opening.
  • the score can be curvilinear.
  • a second score can be provided forming a tamper-evident
  • Package shape can be primarily influenced by the products contained within the package, in part, due to the flexibility of the laminate film.
  • the flexible film may be configured as a flow-wrap or overwrap around a support structure, such as an internal rigid support or product tray.
  • each label corresponds to the following general elements as follows: -00 package embodiment, -02 body/film, -04 label, -06 first end seal, -08 second end seal, -10 longitudinal seal, -12 score, -14 tab, and -16 temper evident feature.
  • the remaining digits to the left of these figure labels correspond to a particular illustrated
  • FIGS. 1- 12 illustrate a package 100 having a film body, score, label, and adhesive as described above.
  • package 100 has a flexible film 102 forming a package body.
  • Film body 102 has a first end seal 106 (leading), a second end seal 108 (trailing) and a longitudinal seal 1 10.
  • seals 106, 108 and 110 are non-peelable.
  • Film body 102 also has a score 112 that defines an opening and an optional score 114 to form "dog-bone" a tamper evident feature 116 that breaks or snaps upon initial opening to indicate that the package is being opened for the first time.
  • a closure layer or label 104 is disposed and affixed to film 102 by a pressure sensitive adhesive (PSA) 120 (FIG. 2 and 12) over scores 112 and 116.
  • the closure layer 104 (label) includes an adhesive free tab 114.
  • Tab 114 can be peeled back (transverse to the longitudinal seal in FIG. 1) to form an opening until the label and film window or panel 122 are partially removed (FIG. 2) or completely removed (FIG. 3) to expose the package contents 118.
  • the score and, thus the opening are preferably sized to allow removal of 1-4 products on its longitudinal axis.
  • package contents 118 may reclose the package by replacing the label to its original (or near original) location prior to use, such as shown in FIG. 1 , which at least partially reseals the opening with the pressure sensitive adhesive disposed around the score 112.
  • the user can remove the closure layer 104 and a panel 122 from a remainder of the package and deform film 102, such as shown in FIG. 4, to cover the opening by a fold of the flexible film over the opening and reclose the package 100 by using the closure layer 104 with the panel 122 to secure the package into its folded closed configuration.
  • film 102 is deformable to cover the opening by rolling the flexible film 124 over the opening.
  • package 100 includes a label 104 that opens in a direction transverse to longitudinal seal 110 and disposed nearer to first end seal 106 than to the second end seal 108.
  • FIG. 13 illustrates another package form.
  • Package 200 as shown has a flexible film 202 forming a package body.
  • Film body 202 has a first end seal 206 (leading), a second end seal 208 (trailing) and a longitudinal seal 210.
  • Film body 202 also has a score 212 to define an opening and a panel 222 and an optional score 214 to form "dog-bone" a tamper evident feature 216.
  • PSA pressure sensitive adhesive
  • closure layer 204 label
  • label 204 opening is directed transverse to the end seal and disposed nearer to first end seal 206.
  • FIG. 14 illustrates another package form.
  • Package 300 as shown has a flexible film 302 forming a flat package body having a top panel and a bottom panel suitable for products such as chocolate bars.
  • Film body 302 has a first end seal 306 (leading), a second end seal 308 (trailing) and a longitudinal seal 310.
  • Film body 302 also has a score 312 to define an opening and a panel 322 and an optional score 314 to form "dog-bone" a tamper evident feature 316.
  • PSA pressure sensitive adhesive
  • closure layer 304 label
  • label 304 opening is directed transverse to the longitudinal seal and disposed nearer to first end seal 306.
  • FIG. 15 illustrates another package form.
  • Package 400 as shown has a flexible film 402 forming a flat package body having a top panel and a bottom panel suitable for products such as chocolate bars.
  • Film body 402 has a first end seal 406 (leading), a second end seal 408 (trailing) and a longitudinal seal 410.
  • Film body 402 also has a score 412 to define an opening and a panel 422 and an optional score 414 to form "dog-bone" a tamper evident feature 416.
  • PSA pressure sensitive adhesive
  • closure layer 404 label
  • label 404 opening is directed transverse to the longitudinal seal and disposed nearer to first end seal 406, but is also wrapped around a package edge so that it extends from front panel 420 to bottom panel 422.
  • the package shape can be a pouch having a front panel and a rear panel defined by fold lines in the film. It is noted again though that given the flexibility of the laminate film, package shape can be influenced by the product contents or internal trays.
  • FIGS. 16-17 illustrate another package form.
  • Package 500 as shown has a flexible film 502 forming a flat pouch package body having a top panel suitable for vertical form and fill applications.
  • Film body 502 has side seals 507 and 509).
  • Film body 502 also has a score 512 to define an opening and a panel 522 and an optional score 514 to form "dog-bone" a tamper evident feature 516.
  • Disposed and affixed to film 502 by a pressure sensitive adhesive (PSA) over scores 512 and 516 is a closure layer 504 (label) and an adhesive free tab 514.
  • label 504 opening is directed transverse to the side seals 507 and 509.
  • FIGS. 18-19 illustrate another package form.
  • Package 500 as shown has a flexible film 502 forming a flat pouch package body having a top panel suitable for vertical form and fill applications.
  • Film body 502 has side seals 507 and 509.
  • Film body 502 also has a score 512 to define an opening and an optional score 514 to form "dog-bone" a tamper evident feature 516.
  • Disposed and affixed to film 502 by a pressure sensitive adhesive (PSA) over scores 512 and 516 is a closure layer 504 (label) and an adhesive free tab 514.
  • label 504 opening is directed transverse to the side seals 507 and 509.
  • FIG. 17 shows a partially peeled label 504 exposing content 518.
  • FIGS. 18-19 illustrate another package form.
  • Package 600 as shown has a flexible film 602 forming a flat pouch package body having a top panel suitable for vertical form and fill applications.
  • Film body 602 has side seals 607 and 609.
  • Film body 602 also has a score 612 to define an opening and a panel 622 and an optional score 614 to form "dog-bone" a tamper evident feature 616.
  • PSA pressure sensitive adhesive
  • closure layer 604 label
  • label 604 opening is directed general parallel to the side seals 607 and 609.
  • FIG. 19 shown an open package reclosed using the tack down functionality of label 604.
  • FIG. 20 illustrates another package form.
  • Package 700 as shown has a flexible film 702 forming a flat package body having a three-sided seal and top panel 720 and a bottom panel suitable for products such as sticks of chewing gum.
  • Film body 702 has three-sided seal 711 and a folded film edge 722.
  • Film body 702 also has a score 712 to define an opening and a panel 722 and an optional score 714 to form "dog-bone" a tamper evident feature 716.
  • label 704 opening is directed generally parallel to the folded film edge 723.
  • FIG. 21 illustrates another package form.
  • Package 800 as shown has a flexible film 802 forming a flat package body having a three-sided seal and top panel 820 and a bottom panel suitable for products such as sticks of chewing gum.
  • Film body 802 has three-sided seal 811 and a folded film edge 822.
  • Film body 802 also has a score 812 to define an opening and a panel 222 and an optional score 814 to form "dog-bone" a tamper evident feature 816.
  • FIG. 22 illustrates another package form.
  • Package 900 as shown has a flexible film 902 forming a pouch package body having folding side panels 920.
  • Film body 902 has a first end seal 906 (leading), a second end seal 908 (trailing) and a longitudinal seal 910.
  • Film body 902 also has a score 912 to define an opening and a panel 922 and an optional score 914 to form "dog-bone" a tamper evident feature 916.
  • label 904 opening is directed transverse to longitudinal seal 910.
  • FIG. 23 illustrates another package form.
  • Package 1000 as shown has a flexible film 1002 forming a pouch package body having folding side panels 1020.
  • Film body 1002 has a first end seal 1006 (leading), a second end seal 1008 (trailing) and a longitudinal seal 1010.
  • Film body 1002 also has a score 1012 to define an opening and a panel 1022 and an optional score 1014 to form "dog-bone" a tamper evident feature 1016.
  • PSA pressure sensitive adhesive
  • closure layer 1004 label
  • label 1004 opening is directed transverse to end seals 1006 and 1008.
  • FIG. 24 illustrates another package form.
  • Package 1100 as shown has a flexible film 1102 forming a package having a generally rectilinear side profile such as for a sleeve of crackers.
  • Film body 1102 has a first end seal 1106 (leading), a second end seal 1108 (trailing) and a longitudinal seal 1110.
  • Film body 1102 also has a score 1112 to define an opening and a panel 1122 and an optional score 1114 to form "dog-bone" a tamper evident feature 1116.
  • PSA pressure sensitive adhesive
  • closure layer 1104 label
  • label 1104 opening is directed transverse to longitudinal seal 1110.
  • FIG. 25 illustrates another package form.
  • Package 1200 as shown has a flexible film 1202 forming a package having a generally rectilinear side profile such as for a sleeve of crackers.
  • Film body 1202 has a first end seal 1206 (leading), a second end seal 1208 (trailing) and a longitudinal seal 1210.
  • Film body 1202 also has a score 1212 to define an opening and a panel 1222 and an optional score 1214 to form "dog-bone" a tamper evident feature 1216.
  • PSA pressure sensitive adhesive
  • closure layer 1204 label
  • an adhesive free tab 1214 Disposed and affixed to film 1202 by a pressure sensitive adhesive (PSA) over scores 1212 and 1216 is a closure layer 1204 (label) and an adhesive free tab 1214.
  • PSA pressure sensitive adhesive
  • FIGS. 26 and 27 illustrate another package form.
  • Package 1300 as shown has a flexible film laminate 1302.
  • Film body 1302 has a first end seal 1306 (leading), a second end seal 1308 (trailing) and a longitudinal seal 1310.
  • film 1302 is a laminate of two films held together by a pressure sensitive adhesive interstitial layer.
  • a label can be formed from a top film layer by a top cut 1311 and the window cut of the inner laminate by a bottom cut 1313 to form a built in label 1315 having a panel 1322.
  • An optional "dog-bone" score can form a tamper evident feature 1316.
  • Built in label 1315 can also have a PSA deadened area 1314.
  • label 1315 opening is directed transverse to longitudinal seal 1310.
  • label 1315 can be partially or fully peeled to expose contents 1318.
  • a blank to form a package can include a continuous web of flexible film having a width and a longitudinal axis; at least one discrete closure layer applied to a portion of the continuous web of flexible film and along the longitudinal axis with pressure sensitive adhesive; and the continuous web and the at least one continuous closure layer configured to be formed into a series of identical package forming blanks, the flexible film of each identical package forming blank having a score formed therein that coincides with at least a portion of the closure layer and that subsequently forms a package opening when ruptured and the discrete closure layer is removed.
  • the blank can have at least one discrete closure layer that is a bi-axially oriented polypropylene having a thickness in a range of about 12 microns to 50 microns (e.g., 12 microns to 50 microns); and the continuous web of flexible film can be a laminate of an oriented polypropylene layer having a thickness in a range of about 11 microns to 18 microns, (e.g., 11 microns to 18 microns), preferably about 15 microns (e.g., 15 microns) laminated to a metalized bi-axially oriented polypropylene layer having a thickness in a range of about 11 microns to 18 microns (e.g., 11 microns to 18 microns).
  • a blank 125 for the package of FIG. 1 shows an area 126 for the first end seal, area 128 for the second end seal, and area 130 for the longitudinal seal.
  • Label 104 has a tab 114, and the film has a score 112 to form an opening and a panel 222 and an optional temper evident feature 116.
  • Blank 125 can be arranged in connected series on a continuous film web to form a roll of blanks.
  • FIG. 29 shows in cross section an exemplary film laminate having a first laminate layer 103 and a second laminate layer 105. Laminate layers can be configured as described above.
  • a blank 1325 for the package of FIG. 26 shows an area 1326 for the first end seal, area 1328 for the second end seal, and area 1330 for the longitudinal seal.
  • Built in label 1315 has a tab 1314, and the film has an optional temper evident feature 1316.
  • Blank 1325 can be arranged in connected series on a continuous film web to form a roll of blanks.
  • FIG. 31 shows in cross section an exemplary film laminate for the built in label 1315 having a first laminate layer 1315 and a second laminate layer 1317 affixed to each other by PSA 1320.
  • Laminate layers can be configured as described above.
  • Outer laminate layer 1315 has a top cut 1311 to form the built in label 1315 and lower laminate 1317 has a bottom cut 1313 to form the opening and a panel 1322. As shown in FIG. 31 , deadened area 1321 forms a peel tab 1314.
  • Methods for producing the flexible film packages may include forming a score in a portion of a continuous web of flexible film having a longitudinal axis and applying a closure layer in the form of a discrete label over the score along the longitudinal axis with a pressure sensitive adhesive.
  • the label is applied prior to scoring the film.
  • the method also may include forming a continuous longitudinal seal from two opposing edges of the continuous web of flexible material and forming a first end seal and a second end seal.
  • an adhesive-free grasping portion may be formed at a first end of the flexible package.
  • the flexible packages may be formed in off-line and in-line processes with respect to the packaging of product and also may be formed in both horizontal and vertical form-fill-seal operations, among others.
  • a method of packaging products in a series of packages may include feeding a continuous film web having longitudinal edges and a predetermined width between the longitudinal edges.
  • the continuous film web is scored to define an opening in the film web upon initial rupture opening once the label is completely removed from the continuous film web and an adhesive, such as a pressure sensitive adhesive that provides a degree of releaseability and reclosability, is provided between the label and the film.
  • an adhesive such as a pressure sensitive adhesive that provides a degree of releaseability and reclosability
  • the method may provide products in a series for packaging, and the continuous film web and label wrapped around the products.
  • a longitudinal seal such as a fin or lap seal, is provided along the longitudinal edges of the continuous film web, and a leading and trailing end seals may be provided between adjacent packages of the series of packages.
  • a longitudinal fin-seal can be formed as two film edges are joined and sealed by heated wheels.
  • a sealant layer can be applied to the film to facilitate the type of desired seal.
  • This internal adhesive can be applied up to 100 percent of the interior surface or only where it is needed to provide a seal.
  • the method to assemble the package can use heat seals, cold seals, extrusion and adhesive lamination, or co-extrusion. When the products are enveloped and sealed within the flow film, the flow film/label laminate can be cut into individual packages.
  • One exemplary method of making one package embodiment can use a packaging apparatus that positions the film above the product, and then wraps the film downwards to form the fin-seal beneath the product.
  • the label can be registered on the film.
  • the film Prior, during or after adding label, the film can be scored on the film surface directed to the interior of the package, though the top surface could also be scored. Preferably, though scoring occurs after the label is applied. As described above, score can be made by laser, mechanical means such as a knife, and the like.
  • a longitudinal fin-seal can be formed as the film/label laminate form around a product.
  • the sealant layers can be heated wheels pressed together, which activates the heat sealant layer on the interior layer.
  • the heated wheels can be heated to between about 85 and 205 degrees Celsius. Again, line speed and film thickness are also a factor in the seal formation and its peelability and hermeticity.
  • the fin-seal can be oriented to the rear panel of package. It is noted though that fin-seal can be oriented on any side of package 20.
  • end-seals can be formed by adjacent upper and lower seal jaws, which heat seal the ends of the package.
  • a knife can fully separate individual packages or alternately partially cut or perforate the cut between the packages to hold them together.
  • the method of manufacturing the flexible package may affect the particular seals, folds, and various other features of particular flexible pouches.
  • the present embodiments are made from a high-speed form-fill-seal (FFS) operation that can produce up to 800 packages per minute.
  • FFS form-fill-seal

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Bag Frames (AREA)
  • Closures For Containers (AREA)

Abstract

Emballage pouvant comprendre un film flexible formant un corps ayant une configuration initiale délimitant une cavité de contenu intérieur et comprenant un premier joint d'extrémité, un second joint d'extrémité et un joint longitudinal s'étendant du premier joint d'extrémité au second joint d'extrémité ; une rainure formée dans le film flexible délimitant une ouverture sur la cavité de contenu lors de la rupture initiale ; une couche de fermeture fixée amovible recouvrant l'entaille et s'étendant sur une partie du corps sur des parties non scellées du film flexible ; un adhésif sensible à la pression situé entre la couche de fermeture et le film flexible ; et la couche de fermeture étant multifonctionnelle, ayant une première fonction pour refermer l'ouverture en recouvrant l'ouverture et une seconde fonction en tant que bande adhésive pour faire adhérer des parties du corps déformable pour recouvrir l'ouverture dans une seconde configuration quand le contenu intérieur est retiré.
PCT/US2015/032616 2014-05-30 2015-05-27 Emballages refermables WO2015183913A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201462005705P 2014-05-30 2014-05-30
US62/005,705 2014-05-30

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WO2015183913A2 true WO2015183913A2 (fr) 2015-12-03
WO2015183913A3 WO2015183913A3 (fr) 2016-01-28

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WO (1) WO2015183913A2 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
DE102020002522A1 (de) 2020-04-25 2021-10-28 Bernd Kowalewski Klebbarer Verschlussstreifen als Vorrichtung und Verfahren zum temporären Verschließen von Auftragsdüsen

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SE0104399D0 (sv) * 2001-12-27 2001-12-27 Regath Hb Etikett
DE10232959A1 (de) * 2002-07-19 2004-02-19 Hochland Ag Verpackung und Verfahren zu ihrer Herstellung
DE102007030267A1 (de) * 2007-06-28 2009-01-08 Focke & Co.(Gmbh & Co. Kg) Packung für stückige oder körnige Güter
ES2525843T3 (es) * 2010-05-18 2014-12-30 Intercontinental Great Brands Llc Envase flexible cerrable repetidamente y métodos de fabricación del mismo

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020002522A1 (de) 2020-04-25 2021-10-28 Bernd Kowalewski Klebbarer Verschlussstreifen als Vorrichtung und Verfahren zum temporären Verschließen von Auftragsdüsen
DE102020002522B4 (de) 2020-04-25 2022-11-10 Bernd Kowalewski Verwendung eines Verschlussstreifens mit Klebeflächen zum temporären Verschließen einer Auftragsdüse

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AR100650A1 (es) 2016-10-19
WO2015183913A3 (fr) 2016-01-28

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