Openable sealant layer blend

Abstract

A peelable sealant layer blend and film package made therefrom. The blend having 40 to 65 wt% of an ethylene copolymer based on the total weight of the peelable sealant layer; 20 to 40 wt% of an impact modified polystyrene based on the total weight of the peelable sealant layer; 5 to 10 wt% of a styrene block copolymer based on the total weight of the peelable sealant layer; and 10 to 30 wt% an ionomer compound based on the total weight of the peelable sealant layer.

Description

OPENABLE SEALANT LAYER BLENDCROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to U.S. Patent Application Serial No. 63 / 707,929, filed October 16, 2025 and entitled Openable Sealant Layer Blend, the entirety of which is incorporated herein by reference.BACKGROUND

[0002] The subject matter disclosed herein relates to a sealant layer blend, more particularly to a polymeric sealant layer blend with consistent opening force across a range of fill and sealing parameters.

[0003] Fluid filled flexible containers can have a seal area that both secures the product within the container and also ruptures allowing the flow of the fluid product from the container. Having a seal that is suitable for both purposes is challenging. It is especially challenging depending on the type of product being packaged, for example for products packaged at a temperature above ambient air temperature. If the seal is too weak the package can burst causing loss of product and contamination of nearby areas. If the seal is too strong, the package will not burst properly which can cause frustration of unintended operation of the package.

[0004] Such challenges are amplified when a product is filled while hot into a package. Hot products are often used for food safety reasons or to aid in the flow of more viscous products. However, hot products present additional challenges to the packaging, especially seal areas.

[0005] The discussion above is merely provided for general background information and is not intended to be used as an aid in determining the scope of the claimed subject matter.BRIEF DESCRIPTION

[0006] A peelable sealant layer blend and film package made therefrom. The blend having 40 to 65 wt% of an ethylene copolymer based on the total weight of the peelable sealant layer; 20 to 40 wt% of an impact modified polystyrene based on the total weight of the peelable sealantlayer; 5 to 10 wt% of a styrene block copolymer based on the total weight of the peelable sealant layer; and 10 to 30 wt% an ionomer compound based on the total weight of the peelable sealant layer.

[0007] An advantage that may be realized in the practice of some disclosed embodiments of the film package and sealant layer is a narrow distribution of opening force and seal strength across a wide variety of seal parameters.

[0008] In one exemplary embodiment, a film package is disclosed. The film package comprises a first panel having an inner surface; a second panel having an inner surface; portions of the inner surfaces of the first and second panels being in communication with each other to form a pouch defining a main section and a channel section; and a label comprising a peelable sealant layer and an outer layer opposite the sealant layer the outer layer opposite the sealing layer being in direct contact with a portion of the inner surface of the first panel; a portion of the inner surface of the first panel which defines the main section being free from contact of the label. The peelable sealant layer comprising 40 to 65 wt% of an ethylene copolymer based on the total weight of the peelable sealant layer; 20 to 40 wt% of an impact modified polystyrene based on the total weight of the peelable sealant layer; 5 to 10 wt% of a styrene block copolymer based on the total weight of the peelable sealant layer; and 10 to 30 wt% an ionomer compound based on the total weight of the peelable sealant layer.

[0009] In another exemplary embodiment, a sealant layer comprising 40 to 65 wt% of an ethylene copolymer based on the total weight of the sealant layer; 20 to 40 wt% of an impact modified polystyrene based on the total weight of the sealant layer; 5 to 10 wt% of a styrene block copolymer based on the total weight of the sealant layer; and 10 to 30 wt% an ionomer compound based on the total weight of the sealant layer is disclosed.

[0010] In another exemplary embodiment, a method of creating a fluid filled package is disclosed. The method comprises the steps of: providing a film package, filling the film package with a fluid; and sealing the film package thereby sealing the fluid within the film package. The film package comprising a first panel having an inner surface; a second panel having an inner surface; portions of the inner surfaces of the first and second panels being in communication with each other to form a pouch defining a main section and a channel section; and a labelcomprising a peelable sealant layer and an outer layer opposite the sealant layer the outer layer opposite the sealing layer being in direct contact with a portion of the inner surface of the first panel; a portion of the inner surface of the first panel which defines the main section being free from contact of the label. The peelable sealant layer comprising 40 to 65 wt% of an ethylene copolymer based on the total weight of the peelable sealant layer; 20 to 40 wt% of an impact modified polystyrene based on the total weight of the peelable sealant layer; 5 to 10 wt% of a styrene block copolymer based on the total weight of the peelable sealant layer; and 10 to 30 wt% an ionomer compound based on the total weight of the peelable sealant layer.

[0011] This brief description of the invention is intended only to provide a brief overview of subject matter disclosed herein according to one or more illustrative embodiments, and does not serve as a guide to interpreting the claims or to define or limit the scope of the invention, which is defined only by the appended claims. This brief description is provided to introduce an illustrative selection of concepts in a simplified form that are further described below in the detailed description. This brief description is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter. The claimed subject matter is not limited to implementations that solve any or all disadvantages noted in the background.BRIEF DESCRIPTION OF THE DRAWINGS

[0012] So that the manner in which the features of the invention can be understood, a detailed description of the invention may be had by reference to certain embodiments, some of which are illustrated in the accompanying drawings. It is to be noted, however, that the drawings illustrate only certain embodiments of this invention and are therefore not to be considered limiting of its scope, for the scope of the invention encompasses other equally effective embodiments. The drawings are not necessarily to scale, emphasis generally being placed upon illustrating the features of certain embodiments of the invention. In the drawings, like numerals are used to indicate like parts throughout the various views. Thus, for further understanding of the invention, reference can be made to the following detailed description, read in connection with the drawings in which:

[0013] Figs. 1 A and IB are an isometric view of an exemplary product pouch in accordance with some embodiments;

[0014] Fig. 2 is an isometric view of an exemplary product pouch in accordance with some embodiments;

[0015] Fig. 3 is a cross-sectional view of a label in accordance with some embodiments;

[0016] Fig. 4 is a pouch spout in accordance with some embodiments;

[0017] Fig. 5 is a cross-sectional view of a pouch spout in accordance with some embodiments;

[0018] Fig. 6 is a cross-sectional view of a pouch spout in accordance with some embodiments;

[0019] Fig. 7 is a cross-sectional view of a pouch spout in accordance with some embodiments;

[0020] Fig. 8 is a cross-sectional view of a pouch spout in accordance with some embodiments;

[0021] Fig. 9 is a cross-sectional view of a pouch spout in accordance with some embodiments;

[0022] Figs. 10A and 10B depict a dispensing system in accordance with some embodiments;

[0023] Fig. 11 is an isometric view of a pouch spout in accordance with some embodiments;

[0024] Fig. 12 is an isometric view of a pouch spout in accordance with some embodiments;

[0025] Fig. 13 is a heat seal profile chart of Example 1 and Comparative;

[0026] Fig. 14 is seal strength chart of Example 1 and Comparative;

[0027] Fig. 15 is an opening force distribution chart of a large sample size of pouches made from Example 1 and Comparative; and

[0028] Fig. 16 is an opening force distribution chart of a large sample size of pouches made from of Example 1 and Comparative.DETAILED DESCRIPTION

[0029] Pouches that are fdled with a flowable product are disclosed. When a manual force is applied to the exterior of the pouch, the sealant layer ruptures in a channel section leading to a tip and product flows from the pouch. The sealant formulation having a good seal and low opening force through an enhanced range of seal temperatures. In particular, the sealant layer works well for not only cool or room temperature products, but also for products which are hot filled. A “hot filled” product is product that is packaged at a temperature of between 120-200 °F. In other words, products placed into packaging at a heated temperature which often leads to the failure of other seals.

[0030] In one embodiment, a package includes a first panel and a second panel that are sealed to each other to form a pouch. The pouch includes a main section and a channel section. The package further includes a product disposed within the pouch. The product is capable of flowing from the main section through the channel section to a tip of the pouch.

[0031] As used herein, the term “film” is inclusive of plastic web, regardless of whether it is film or sheet such as a laminate, sheet, web, coating, or the like, that can be used to package a product. The film can be a rigid, semi-rigid, or flexible product. In some embodiments, the film is produced as a fully coextruded film, i.e., all layers of the film emerging from a single die at the same time. In some embodiments, the film is made using a flat cast film production process or a round cast film production process. Alternatively, the film can be made using a blown film process, double bubble process, triple bubble process, or adhesive or extrusion coating lamination. The film can have a thickness of 0.25 mm or less, or a thickness of from 0.5 to 30 mils, or from 0.5 to 15 mils, or from 1 to 10 mils, or from 1 to 8 mils, or from 1.1 to 7 mils, or from 1 .2 to 6 mils, or from 1 .3 to 5 mils, or from 1 .5 to 4 mils.

[0032] The multi-layer films described herein may comprise at least, and / or at most, any of the following numbers of layers: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15. As used herein, the term “layer” refers to a discrete film component which is substantially coextensive with the film and has a substantially uniform composition. Where two or more directly adjacent layers have essentially the same composition, then these two or more adjacent layers may be considered a single layer for the purposes of this application. In an embodiment, the multilayer film utilizes microlayers. A microlayer section may include between 10 and 1,000 microlayers in each microlayer section.

[0033] As used herein the term “ethylene copolymer” refers to ethylene homopolymer such as low density polyethylene; ethylene / alpha olefin copolymer such as those defined hereinbelow; and other ethylene copolymers such as ethylene / vinyl acetate copolymer; ethylene / alkyl acrylate copolymer; or ethylene / (meth)acrylic acid copolymer. Ethylene / alpha-olefin copolymer herein refers to copolymers of ethylene with one or more comonomers selected from C4 to CIO alphaolefins such as butene-1, hexene-1, octene-1, etc. in which the molecules of the copolymers comprise long polymer chains with relatively few side chain branches arising from the alphaolefin which was reacted with ethylene. This molecular structure is to be contrasted with conventional high pressure low or medium density polyethylenes which are highly branched with respect to ethylene / alpha-olefin copolymers and which high pressure polyethylenes contain both long chain and short chain branches. Ethylene / alpha-olefin copolymers include one or more of the following: 1) high density polyethylene, for example having a density greater than 0.94 g / cm3, 2) medium density polyethylene, for example having a density of from 0.93 to 0.94 g / cm3, 3) linear medium density polyethylene, for example having a density of from 0.926 to 0.94 g g / cm3, 4) low density polyethylene, for example having a density of from 0.915 to 0.939 g / cm3, 5) linear low density polyethylene, for example having a density of from 0.915 to 0.935 g / cm3, 6) very-low or ultra-low density polyethylene, for example having density below 0.915 g / cm3, and homogeneous ethylene / alpha-olefin copolymers. Homogeneous ethylene / alpha-olefin copolymers include those having a density of less than about any of the following: 0.925, 0.922, 0.92, 0.917, 0.915, 0.912, 0.91, 0.907, 0.905, 0.903, 0.90, and 0.86 g / cm3. Unless otherwise indicated, all densities herein are measured according to ASTM D1505.

[0034] As used herein, “barrier”, “barrier layer”, and the like refer to the ability of a fdm or film layer to serve as a barrier to one or more gases. For example, oxygen barrier layers can comprise, but are not limited to, ethylene / vinyl alcohol copolymer, polyvinyl chloride, polyvinylidene chloride, polyamide, polyester, polyacrylonitrile, and the like, as known to those of ordinary skill in the art. In some embodiments, the barrier film or layer has an oxygen transmission rate of no more than 100 cc O2 / m2*dayatm; less than 50 cc O2 / m2»dayatm; less than 25 cc O2 / m2»day»atm; less than 10 cc O2 / m2»day»atm; less than 5 cc O2 / m2»day*atm; or less than 1 cc O2 / m2»day*atm (tested at 1 mil thick and at 25°C in accordance with ASTM D3985, herein incorporated by reference in its entirety).

[0035] As used herein, “bulk layer” and the like refer to any layer of a film that is present for the purpose of increasing the abuse-resistance, toughness, and / or modulus of a film. In some embodiments, bulk layers can comprise polyolefin, ethylene / alpha-olefm copolymer, ethylene / alpha-olefin copolymer plastomer, low density polyethylene, linear low density polyethylene, and combinations thereof.

[0036] As used herein, “condiment” and the like refer to (but is not limited to) mustard, ketchup, salsa, guacamole, cheese sauce, sour cream, taco sauce, salsa, mayonnaise, tartar sauce, barbecue sauce, syrup, fruit concentrates, gravy, hot fudge, caramel, butterscotch toppings, flowable margarine or butter, horseradish, creamers, cream, yogurt, jams, jelly, peanut butter, spices, salad dressing and the like. In some embodiments, the term “condiment” can include any and all additives that a user can choose to add to any food item for any purpose, e.g. for organoleptic, processing, or preservative purposes.

[0037] As used herein, “container” and the like refer to tubes, bottles, jars, tubs, cylinders, vessels, flasks, chambers, and the like, whether pliable or rigid.

[0038] As used herein, “exterior” and the like refer to the outside portion of an article.

[0039] As used herein, “filled” and the like, with respect to a pouch, refer to a pouch that has been filled with a product in a manner consistent with a commercial filling operation. Thus, a pouch may or may not be 100% filled.

[0040] As used herein, “flexible” and the like refer to materials that are pliable and easily deform in the presence of external forces.

[0041] As used herein, “frangible seal” and the like refer to a seal that is sufficiently durable to allow normal handling and storage, but ruptures or substantially ruptures under applied pressure. In some embodiments, suitable frangible seals will have a peel strength of from 0.5 to less than 5 pounds / inch as measured by ASTM F88.

[0042] As used herein, “heat seal” and the like refer to any seal of a first region of a film surface to a second region of a film surface, wherein the seal is formed by heating the regions to at least their respective seal initiation temperatures. Heat-sealing is the process of joining two or more thermoplastic films or sheets by heating areas in contact with each other to the temperature at which fusion occurs, usually aided by pressure. In some embodiments, heat-sealing can be inclusive of thermal sealing, melt-bead sealing, impulse sealing, dielectric sealing, and / or ultrasonic sealing. The heating can be performed by any one or more of a wide variety of means, such as (but not limited to) a heated bar, hot wire, hot air, infrared radiation, ultrasonic sealing, and the like.

[0043] As used herein, “interior” and the like refer to the inside portion of an article.

[0044] As used herein, “label” and the like refer to a portion of sheet or film material(including multilayer film materials) that can be used to construct a frangible seal in accordance with some embodiments of the frangible seals.

[0045] As used herein, “multilayer film” and the like refer to a thermoplastic film having one or more layers formed from polymeric or other materials that are bonded together by any conventional or suitable method, including one or more of the following methods: coextrusion, extrusion coating, lamination, vapor deposition coating, solvent coating, emulsion coating, or suspension coating.

[0046] As used herein, “outlet” and the like refer to an aperture, orifice, opening, chute, passage, or similar channel through which a product can exit the disclosed packaging system.

[0047] As used herein, “panel” and the like herein refer to a wall or major section of a pouch. A first and second panel can be derived from two pieces of film joined together by any suitable means, such as heat sealing. Alternatively, a single web of film can be folded into a tubular configuration, and longitudinally and transversely sealed to create a pouch exhibiting a first and second panel.

[0048] As used herein, “peelable sealant” and the like refer to any suitable polymer or polymer blend that forms at least a part of a film layer or is applied to a film layer, wherein the peelable sealant exhibits a seal strength that is less than the seal strength of the permanent sealant as described herein. In some embodiments, the peelable sealant can comprise a food grade material.

[0049] As used herein, “permanent sealant” and the like refer to any suitable polymer or polymer blend that forms at least a part of a film layer or is applied to a film layer, wherein the permanent layer exhibits a seal strength that is greater than the seal strength of the peelable sealant as described herein.

[0050] As used herein, “pouch” and the like refer to any of a wide variety of containers known in the art, including (but not limited to) bags, packets, packages, and the like.

[0051] As used herein, “product” and the like refer to any of a wide variety of food or nonfood items that can be packaged in the disclosed systems. In some embodiments, the product is a condiment, and / or a flowable product.

[0052] As used herein, “seal” and the like herein refer to any seal of a first region of a film surface to a second region of a film or substrate surface. In some embodiments, the seal can be formed by heating the regions to at least their respective seal initiation temperatures using a heated bar, hot air, infrared radiation, ultrasonic sealing, and the like. In some embodiments, the seal can be formed by an adhesive. Alternatively, or in addition, in some embodiments the seal can be formed using a UV or e-beam curable adhesive seal.

[0053] As used herein, “seal layer” and the like refer to an outermost film layer or layers involved in heat sealing of the film to itself, to another film layer of the same or another film, and / or another article that is not a film. “Outermost” layer herein includes a layer found on theoutside of a film, i.e. a layer not bounded on both major surfaces by another film layer. Layers involved in heat sealing can include a second layer, adjacent an outermost layer, that assists in or substantially affects or influences the overall strength of the heat seal. Heat sealing can be performed by any one or more of a wide variety of manners known to those of ordinary skill in art, including using heat seal technique (e.g., melt-bead sealing, thermal sealing, impulse sealing, ultrasonic sealing, hot air, hot wire, infrared radiation, and the like), adhesive sealing, UV- curable adhesive sealing, and the like.

[0054] As used herein, “tie layer” and the like refer to an internal film layer having the primary purpose of adhering two layers to one another. In some embodiments, a tie layer can comprise any nonpolar polymer having a polar group grafted thereon, such that the polymer is capable of covalent bonding to polar polymers such as polyamide and ethylene / vinyl alcohol copolymer. In some embodiments, the tie layers can comprise modified polyolefin, modified ethylene / vinyl acetate copolymer, and / or homogeneous ethylene / alpha-olefin copolymer.

[0055] As used herein, “transparent” and the like refer to the ability of a material to transmit incident light with negligible scattering and little absorption, enabling objects to be seen clearly through the material under typical unaided viewing conditions, i.e. the expected use conditions of the material, as measured in accordance with ASTM DI 746.

[0056] As used herein, “valve” and the like refer to any device by which the flow of material can be started, stopped, rerouted or regulated by a movable part that opens, closes, or partially obstructs a passageway through which the material flows. In some embodiments, a suitable valve can comprise any of an umbrella valve, duckbill valve, reed valve, ball valve, flapper valve, poppet valve, Gott valve, check valve, or any suitable combination thereof.

[0057] All compositional percentages used herein are presented on a “by weight” basis, unless designated otherwise.

[0058] As used herein, “impact modified polystyrene” refers to styrene-based copolymers, and particularly polystyrene resins that are modified with rubber particles. The modification of polystyrene is often referred to increasing its impact properties and thus the modified polystyrene can result in higher impact. These high-impact polystyrene blends, commonly referred to by theacronym HIPS, are known in the art of preparing articles with polymers wherein the application for the articles requires less brittleness of more impact resistance than unmodified polystyrene. For example, impact modified polystyrene can be prepared by blending an impact modifier with polystyrene. Such materials are disclosed to be useful for packaging applications. Another method of making impact modified polystyrene is to dissolve a rubber in styrene monomer and then polymerize the monomer. Another non-limiting method of making impact modified polystyrene includes using block copolymers containing conjugated diene monomer.

[0059] As used herein the term “styrene block copolymer” includes block copolymers and terpolymers formed from styrene and at least one additional polymer. Styrene block copolymers include, but are not limited to styrene-butadiene-styrene block copolymers, styrene- ethylene / butylene-styrene copolymers, styrene-isoprene-styrene copolymers styrene-ethylene- styrene copolymer and the like.

[0060] As used herein the term “ionomer compound” refers to a copolymer based on metal salts of copolymers of ethylene and a vinyl monomer with an acid group, such as methacrylic acid, and are cross-linked polymers in which the linkages are ionic (i.e., interchain ionic bonding) as well as covalent bonds. Ionomer resins have positively and negatively charged groups, which are not associated with each other, providing the resin with a polar character. The metal can be in the form of a monovalent or divalent ion such as lithium, sodium, potassium, calcium, magnesium and zinc. Unsaturated organic acids include acrylic acid and methacrylic acid. Unsaturated organic ester includes methacrylate and isobutyl acrylate. Ionomer resin can include a mixture of two or more ethylene / unsaturated organic acid or ester copolymers.

[0061] Depicted in Figs. 1A to IB are an embodiment of a pouch 100 with a product 102 disposed therein. While hand squeezable pouches are shown in this embodiment, use withing a dispenser is contemplated. Non-limiting dispensers are discussed in more detail herein. Turning back to Figs. 1 A to IB, the pouch 100 can be any of a variety of pouches known in the art, including, for example, a stand-up pouch, a gusseted stand-up pouch, a lay-flat pouch, a pouch comprising at least one longitudinal seal, and the like. In some embodiments, the pouch 100 includes a pair of films joined together along a pair of opposing sides and a bottom bridging the sides. Alternatively, in some embodiments, the pouch 100 can be formed from a single film thathas been center folded at one edge, or a pouch that includes one or more lap seals, fin seals, and / or edge seals. In another embodiment, the pouch 100 can comprise a continuous tubular material with no longitudinal seal, but with transverse seals to form transverse ends of the pouch 100. The description of pouches herein as having “first and second panels” should be understood to describe a pouch that when filled with product and laid on a surface, will display a major first surface, wall or panel, and, on the opposite side of the pouch, a second major surface, wall, or panel.

[0062] In the depicted embodiment, the pouch 100 includes a first panel 104 and a second panel 106 that are sealed together about the pouch perimeter with one or more perimeter seals. Perimeter seals can be formed using any suitable method, known and used in the art, such as by the use of heat, pressure, adhesive, and / or mechanical closure. In the depicted embodiment, the perimeter seals include a transverse seal 108 and a channel seal 110. The transverse seal 108 extends directly between longitudinal sides of the pouch 100 to seal one end of the pouch 100. The channel seal 110 extends indirectly between longitudinal sides of the pouch 100 to seal the other end of the pouch 100. The channel seal 110 is shaped to form a tip 112 from which the product 102 can be dispensed and which includes a sealant layer (as defined herein). The pouch 100 includes a main section 114 and a channel section 116. The main section 114 is generally the portion of the pouch 100 between the transverse seal 108 and the channel seal 110. The channel section 116 is generally the portion of the pouch 100 between the start of the channel seal 1 10 and the tip 112.

[0063] Figs. 1 A to IB also depict a series of instances of a process of dispensing the product 102 from the pouch 100. In Fig. 1A, the pouch 100 is sealed closed with the product 102 disposed therein. In some embodiments, the product 102 includes a flowable product, such a condiment or a liquid. For example, in the case where the product 102 is a condiment, the condiment may be mustard, ketchup, salsa, guacamole, cheese sauce, sour cream, taco sauce, salsa, mayonnaise, tartar sauce, barbecue sauce, syrup, fruit concentrates, gravy, hot fudge, caramel, butterscotch toppings, flowable margarine or butter, horseradish, creamers, cream, yogurt, jams, jelly, peanut butter, spices, salad dressing, or any other type of condiment. In examples where the product 102 is a liquid, the liquid may be water, milk, lemonade, oil, or any other type of liquid.

[0064] Tn Fig. IB, pressure 118 is applied to the first and second panels 104 and 106 causing the sealant layer to rupture in the tip 112 so that the tip 112 includes a gap between portions of the first and second panels 104 and 106.. In some embodiments, the pressure 118 can be applied by a user manually. In other embodiments, the channel seal 110 can include a notch or slit that permits a user to remove the end of the channel seal 110 manually by pulling on a tab formed by the notch or slit. In other embodiments, the tip 112 can be manufactured with a gap and the pouch 100 can include a frangible seal that seals the product 102 in the pouch 100 until the frangible seal is broken. Examples of frangible seals are described in U.S. Pat. Nos. 6,983,839, 10,179,343, and U.S. Patent Application Publication No. 2006 / 0093765, the contents of each of which are hereby incorporated by reference in their entirety.

[0065] For example, a user can grasp the pouch 100 and squeeze the first and second panels 104 and 106 toward each other in order to apply the pressure 118. In other embodiments, the pressure 118 can be applied mechanically (e.g., by a dispenser, such as a dispenser system that pushes on the closed end of the pouch 100), pneumatically (e.g., by increasing the gas pressure outside of the pouch 100), or in any other way. The pressure 118 applied to the pouch 100 causes the product 102 is dispensed from the tip 112 as dispensed product 80. Under some conditions, the pressure 118 is sufficient to cause the dispensed product 80 to initially exit the pouch as a stream. Once the stream of the dispensed product 80 reaches a surface (e.g., a table, a tray, a container, a food product, etc ), the dispensed product 80 can accumulate on the surface, as shown in the depicted embodiment.

[0066] The pouch 100 shown in Figs. 1 A to IB has a number of advantages. For example, the pouch 100 may be a convenient package for storing the product 102 before the product 102 is dispensed. The pouch 100 may also be convenient for a user to hold while dispensing the product 102 from the pouch 100. The pouch 100 is also capable of being used to hold and dispense products of different viscosities (e.g., viscoelastic substances, Newtonian fluids, and nonNewtonian fluids). The pouch 100 is also capable of being used to hold and dispense products that are uniform (e.g., water, ketchup, etc.) and non-uniform (e.g., tartar sauce, salsa, pickle relish, etc.).

[0067] As seen in Fig. 2, flexible package 50 includes sealed pouch 60, with product 80 disposed therein. Pouch 60 can be any of a variety of pouches known in the art, including e.g. a stand-up pouch, a gusseted stand-up pouch, a lay-flat pouch, a pouch comprising at least one longitudinal seal, and the like. In some embodiments, pouch 60 can comprise a pair of films joined together along a pair of opposing sides and a bottom bridging the sides. Alternatively, in some embodiments, pouch 60 can be formed from a single film that has been center folded at one edge, or a pouch that includes one or more lap seals, fin seals, and / or edge seals. In another embodiment, pouch 60 can comprise a continuous tubular material with no longitudinal seal, but with transverse seals as disclosed herein. The description of the pouch herein as having “first and second panels” should be understood to describe a pouch that when filled with product and laid on a surface, will display a major first surface, wall or panel, and, on the opposite side of the pouch, a second major surface, wall, or panel.

[0068] In embodiment the flexible package 50 comprises first and second panels 74, 76 that are sealed together about the pouch perimeter with a perimeter seal. Perimeter seals can be formed using any suitable method, known and used in the art, including e.g. the use of heat, pressure, adhesive, and / or mechanical closure. The perimeter seal does not span top edge of pouch spout 72. Rather, the pouch spout 72 includes frangible seal 70 positioned between the first and second panels 74 using a heat seal, ultrasonic seal, static seal, RF seal, adhesive, or a combination thereof. Frangible seals are known to those of ordinary skill in the packaging art. See, for example, U.S. Pat. No. 6,983,839 and U.S. Patent Application Publication No. 2006 / 0093765, the entire disclosures of which are hereby incorporated by reference.

[0069] Referring to Fig. 2, a pouch 60 according to some embodiments is depicted. The pouch 60 comprises first and second panels 74, 76, a first transverse seal 62, a second transverse seal 64, a first side fold 66, a second side fold 68, a longitudinal seal 71, a first pouch end 77, and a second pouch end 78.

[0070] In some embodiments, frangible seal 70 can comprise label 56. Particularly, label 56 includes permanent sealant 51 positioned on first label face 55 and peelable sealant 53 positioned on second label face 57, as shown in Fig. 3. The sealants can comprise part of a film layer, or can be coated, extrusion coated, or applied to the surface of a film using conventional labelingsystems known in the art. As depicted in Figs. 4 and 5, pouch spout 72 can comprise label 56 with permanent sealant 51 positioned on one label face, adjacent to second panel 76, and peelable sealant 53 positioned on the opposing label face, adjacent to first panel 74. In some embodiments, the label is optionally maintained in proper position using one or more spot seals 58. Label 56 can be positioned in any suitable location either fully or partially within pouch spout 72, e.g. adjacent to top edge 54. The label can be any suitable film to provide the permanent sealant and peelable sealant thereon, including mono or multilayer films.

[0071] Permanent sealant 51 can comprise any suitable polymer or polymer blend that makes up at least a portion of a film layer or is applied to a film layer (i.e., a coating). Suitable permanent sealants, for example, can be selected from the group comprising: Ziegler-Natta catalyzed linear low density polyethylenes (such as such as DOWLEX® 2045.03, DOWLEX® 2045.04, and DOWLEX® 2247G), metallocene-catalyzed LLDPE (such as EXCEED® 4518PA and EXCEED® 3518CB), polyolefin “plastomer” grade polyethylenes with high comonomer (such as Dow AFFINITY® PL 1888G, Dow AFFINITY® PL 1850G, Dow AFFINITY® PL 1850, EXACT® 4151, and EXACT® 3024), propylene-ethylene copolymer, LDPE (such as ESCORENE® LD-200.48), ionomer resin, such as SURLYN® 1650, ethylene / vinyl acetate copolymers, ethyl ene / m ethyl (meth)acrylate copolymers, and ethyl ene / butyl acrylate copolymers. Materials used as permanent sealant 51 typically melt with the application of heat and / or pressure to form permanent (non-frangible) seals. Typical seal strengths for the permanent sealant can range from 5 pounds / inch to 15 pounds / inch in accordance with ASTM F88. In some embodiments, the seal strength of the permanent sealant can be greater than the seal strength of the peelable sealant by a difference of at least any of 0.5, 1, 2, 3, 5, 10, 15, 20, or 25 pounds per inch.

[0072] Peelable sealant 53 comprises a blend of an ethylene copolymer, an impact modified polystyrene, a styrene block copolymer and an ionomer. In particular the peelable sealant layer comprises 40 to 65 wt% of an ethylene copolymer; 20 to 40 wt% of an impact modified polystyrene; 5 to 10 wt% of a styrene block copolymer; and 10 to 30 wt% an ionomer compound, all wt% being based on the total weight of the peelable sealant layer. In embodiment the ethylene copolymer is present in an amount of 40 to 65 wt% and has a density of between 0.89 to 0.930 g / cm3as measured in accordance with ASTM D-792.

[0073] Tn embodiments the impact modified polystyrene of the peelable sealant layer is present in an amount of 20 to 40 wt% and comprises a dispersed poly-butadiene phase such as high impact polystyrene. High impact polystyrene is well known in the art as a two-phase system having a polystyrene matrix with polybutadiene disperse phase, and also referred to as toughened polystyrene or rubber-modified polystyrene. High impact polystyrene grades include any grade suitable in the extrusion, molding and / or thermoforming arts. Exemplary HIPS grades include PS 5300 , PS 5310, PS 5400 / 5401. PS 5410, , PS621 / 621 1 , PS 6220, PS 7120, and PS7800, all from INEOS Styrolution Group GmbH: 844E, 845E, 35E, 94 E, 975E, 825 E, 945E, and 960E, all from Total Petrochemcials, Inc.; and EB EC6 00, EB / EC6600, STYRON 421, and STYRON 484, all from Americas Styrenics LLC, and the like. High impact polystyrene is well known in the art as a thermoplastic resin that has elevated toughness and impact-resistance, but low transparency due to light scattering induced by the disperse phase. As known in the art, suitable high impact polystyrene has a density of about 0.89 to 1.20 g / cm3. Suitable high impact polystyrene grades generally range in melt flow from about 1.5 g / 10 min to about 15 g / 10 min at a load of 5.00 kg and a temperature of 200 °C per ASTM D 1238.

[0074] In embodiments the styrene block copolymer of the peelable sealant layer is present in an amount of 5 to 10 wt% and is copolymer or terpolymer of styrene with ethylene, butadiene or isoprene. In embodiments the styrene block copolymer can be any of the typical grades used in polymer resins such as styrene-isoprene-styrene (SIS), styrene-butadiene-styrene (SBS), styrene-isoprene / butadiene-styrene (SIBS) or the hydrogenated derivatives such as styrene- (ethylene-butylene)-styrene (SEBS). Such styrene block copolymers are available for example from Kraton Polymers, Polimeri Europa, Total Petrochemicals, Dexco, Asahi Kasei, and Kuraray such as G1650M, G1652M, G1726M all available from Kraton Polymers and P5051 and P2000 available from Tuftec. In embodiments the styrene block copolymer is chosen from SEBS, SES, SBS and blends thereof. Suitable styrene block copolymers have a density of has a density of 0.89 to 1.20 g / cm3. Suitable styrene block copolymers generally range in melt flow from of more than 1.5 g / 10 min at a load of 5.00 kg and a temperature of 230 °C per ASTM D 1238, of more than 2.5 g / 10 min at a load of 5.00 kg and a temperature of 230 °C per ASTM D 1238. In embodiments the styrene content of the styrene block copolymer is from any of 20 - 39% or 25 - 35%. In embodiments the styrene block copolymer has molecular weight in the range of 50,000 to 200,000.

[0075] Tn embodiments the ionomer compound of the peelable sealant layer is present in an amount of 10 to 30 wt% and is neutralized with a metal in the form of a monovalent or divalent ion such as lithium, sodium, potassium, calcium, magnesium or zinc. In embodiment the ionomer compound is zinc neutralized. Suitable commercial ionomers include for instance Clarix® Zinc Series by A. Schulman, OTEK ionomers by ExxonMobil Chemical Company, and Surlyn ionomers (such as 1650, 1652, 1705-1, 1825) by DuPont, and Ionia 2610 by SK Functional Polymer. Suitable ionomers generally range in melt flow index from 0.5 to 15.0 g / 10 min at a load of 2.16 kg and a temperature of 190 °C per ASTM D1238. In embodiments, the ionomer has a comonomer content of methacrylic acid of from 8 - 16%.

[0076] Returning to Fig. 2, after label 56 has been positioned fully or partially within spout 72, frangible seal 70 can be constructed using the application of heat and / or pressure (i.e., heat sealing). Specifically, the application of heat / pressure activates permanent sealant 51 into an adhesive state. As a result, label 56 becomes permanently sealed to the adjoining pouch panel (second panel 76 in Fig. 8). The application of heat and / or pressure further activates peelable sealant 53, resulting in a frangible seal 70 positioned between label 56 and the adjoining pouch panel (first panel 74 in Fig. 8). As a result, label 56 becomes peelably sealed to first panel 74. The frangible seal can be constructed in any of a variety of patterns, such as straight line, chevron, half-moon, and the like, using e.g., targeted application of heat / pressure. in use, after the frangible seal has been constructed, an increase in pouch pressure (such as from the advancement of a pusher plate in a dispenser) forces peelable sealant 53 to separate from the adjacent pouch panel. As a result, product 80 is able to flow through the pouch spout 72, as depicted by Arrow “A” in Fig. 6.

[0077] Alternatively, frangible seal 70 can be constructed using first and second labels as shown in Figs. 7-9. The two labels include a permanent sealant 51a, 51b respectively positioned on outer label faces 132, adjacent to the pouch panels 76, 74. Either or both of the two labels further comprise peelable sealant 53a, 53b on their respective inner faces 133 (i.e., facing each other). After the labels have been positioned fully or partially within spout 72, frangible seal 70 can be constructed by heat sealing the labels to the pouch fdms as described earlier, creating permanent seals between the labels and front and rear panels. An alternative to the use of heat sealing to create a permanent seal, is the use of a permanent adhesive. Heat sealing creates afrangible seal 70 between the inner faces of the two labels, as a result of peelable sealant 53a, 53b. In some embodiments, the labels can include spot seals 58 to maintain proper positioning in the area outside of the frangible seal. In use, increased pressure within the pouch will rupture frangible seal 70, allowing product to flow between the labels to exit the pouch, as shown by Arrow B in Fig. 9.

[0078] In configurations the spout 72 is located at the end of the channel section 116 along at least a portion of the width of the channel section 116. The label 56 being of less size the panels forming the pouch. In embodiments the label has a length that is less than 25% the length of the first panel, In embodiments, label a width that is less than 50% the width of the first panel.

[0079] The disclosed labels and pouch 60 can be constructed from any of a wide variety of polymeric materials known in the art, including in some embodiments, food safe materials and / or a base film having a food safe material coated thereon. In some embodiments, the label(s) can be a continuous strip of material that spans the entire pouch length in the machine direction, e.g. parallel to the pouch longitudinal seal. In these embodiments, the label(s) can be indexed from a roll and applied (sealed, adhered, or the like) to a pouch. Alternatively, in some embodiments, the label(s) can be an intermittent strip (registered film) positioned in the transverse seal area on one end of pouch 60 in the machine direction, i.e., perpendicular to the longitudinal seal. In these embodiments, the label can be indexed from a roll and applied to the middle of the pouch film web. Alternatively, the frangible strip can run continuously in the transverse or other suitable direction. In some embodiments, the label(s) can be constructed from one or more semi-rigid materials (e.g., EVA sealant / semi-ri id layer / lock down sealant) that can be registered and applied on an end of the pouch parallel to the pouch longitudinal seal. In an alternative embodiment, a food grade cold seal can be used.

[0080] A film used to construct the disclosed pouch and / or label(s) can be multilayer or monolayer. Typically, the films employed will have two or more layers to incorporate a variety of properties, such as, for example, sealability, gas impermeability, and toughness into a single film. Thus, in some embodiments, the films can comprise multilayer films and / or microlayering technology.

[0081] The films used to construct pouch 60 and / or the disclosed labels(s) can include one or more barrier layers, bulk layers, tie layers, abuse layers, and / or sealant layers, e.g., at least one barrier layer such that the pouch has an oxygen transmission rate of no more than about 50 cubic centimeters (at standard temperature and pressure) per square meter per day per 1 atmosphere of oxygen pressure differential measured at 0% relative humidity and 23°C, measured according to ASTM D-3985.

[0082] The polymer components used to fabricate the films can also comprise appropriate amounts of other additives normally included in such compositions. For example, slip agents (such as talc), antioxidants, fillers, dyes, pigments and dyes, radiation stabilizers, antistatic agents, elastomers, and the like can be added to the disclosed films. See, for example, U.S. Pat. Nos. 7,205,040; 7,160,378; 7,160,604; 6,472,081; 6,222,261; 6,221,470; 5,591,520; and 5,061,534, the disclosures of which are hereby incorporated by reference in their entireties. In some embodiments, pouch 60 can be constructed from a food grade material, as would be well known to those of ordinary skill in the art.

[0083] The films used to construct pouch 60 and the disclosed label(s) can have any total thickness so long as they provide the desired properties for the particular packaging operation in which they are to be used. Nevertheless, in some embodiments the disclosed films have a total thickness of from 0.1 mils to 20 mils, such as from 0.2 mils to 10 mils; 0.3 mils to about 8.0 mils; and from 1.0 mils to 5.0 mils. The films used for disclosed label(s) and pouch may be any suitable film included mono or multilayer films.

[0084] The films can be provided in sheet or film form and can be any of the films commonly used for the disclosed type of packaging, and can be constructed by any suitable process including e.g. coextrusion, lamination, extrusion coating, and combinations thereof. See, for example, U.S. Pat. No. 6,769,227, the content of which is herein incorporated by reference in its entirety.

[0085] In some embodiments, the films can be transparent (at least in any non-printed regions) such that the packaged product is at least partially visible through the films. The transparency of the films can be at least about any of the following values: 20%, 25%, 30%, 40%, 50%, 65%, 70%, 75%, 80%, 85%, and 95%.

[0086] Tn some embodiments the films used to construct pouch 60 or label 56 can be pigmented, tinted, or printed. Printing can be employed at any time prior to use of the pouch. In some embodiments, pouch 60 can be inkjet or thermal transfer printed using a device mounted on a packaging machine that forms and seals the pouch. In some embodiments, printing can include branding, product information, use instructions, and / or a mark that identifies the region of the pouch that is to align with the neck of container 40.

[0087] In non-limiting embodiments the second transverse seal 64 can take the form of first transverse seal 62, but without the presence of a frangible seal 70. Alternatively, second transverse seal 64 can take the form of a conventional, linear seal running perpendicular to the longitudinal axis 25 of the pouch. These two alternative configurations are related to the design of the seal bars used, the desired look of the pouch, and the internal pouch volume.

[0088] In an alternative embodiment, the package can be made with the frangible seal positioned in the machine direction, with waste areas at the side of the package perforated for tear off. The lap seal in this embodiment runs from side to side in the package. In another alternative embodiment, the package can be made without a lap seal, but with a fin seal located at the side of the package.

[0089] Tn instances the package is placed in a dispensing system to dispense the product inside the package. Dispensing systems are well known and include any apparatus that can dispense a product from a package, for example in U.S. Pat. Nos. 4,681,524; 5,211,311;5,242,115; 5,462,204; 5,589,226; 5,812,355; and 5,875,922, the contents of which are hereby incorporated by reference. As shown in Figs. 10A -10B, a dispensing systems 30 will typically comprise a mechanical device that can accommodate a packaging system as described herein, and can effect movement of a flowable product, contained in a flexible package, out of the package, through a dispensing valve, and onto an area. An exemplary dispensing system is shown in Figs. 10a and 10b, the dispensing system in one embodiment includes a trigger 32 to activate the dispensing system 10; a piston 34 to drive pusher plate 90 through the container 40 and thus push the flexible package 50 toward the first end 42 of the container; a barrel 36 to house packaging system 20; and a wall 38 against which the container 40 of packaging system20 can abut. The pusher plate 90, is configured, when advanced by the piston into the container, to fit within the container in close proximity to the interior surface of the container.

[0090] After assembly, packaging system 20 can be inserted into a dispensing system 30, as shown in Figs, la and lb. In some embodiments, dispensing system 30 can be of the type that dispenses a portion of the contents of pouch 60 upon each actuation. To this end, dispensing system 30 can include trigger 32 that forms part of an actuating structure. Specifically, trigger 32 can be coupled to piston 34 that is movable within the interior of container 40 via contact with pusher plate 90. The actuating structure functions such that upon each movement of trigger 32, the piston 34 moves towards first end 42 of the container 40, and a bias spring returns the trigger to its original position. In some embodiments, dispensing system 30 includes wall 38 that is configured to abut against the front end of packaging system 20 (i.e. the first end 42 of container 40) so that pressure applied by the trigger 32 is effective to dispense product 80. Packaging system 20 can be used with any of a variety of dispensing systems known in the art. See, for example, U.S. Pat. Nos. 3,687,370; 3,945,569; 4,681,524; 5,462,204; 5,812,355; 5,875,922; 6,286,718; 6,454,138; 6,533,187; 6,691,899; and 7,011,238, the entire contents of which are hereby incorporated by reference.

[0091] To dispense product 80 disposed within pouch 60, a user can initiate trigger 32 on the dispensing system 30. When trigger 32 is pulled, piston 34 advances pusher plate 90 within the interior of container 40. Such movement reduces the volume of pouch 60, thereby collapsing the pouch and increasing the pouch internal pressure. As a result, frangible seal 70 ruptures, allowing product 80 to exit the pouch through spout 72 and valve housing 120. Product may passes through diffuser and out of packaging system 20 through outlets 123. In this way, product can be dispensed in a desired pattern associated with the outlets in the diffuser. For example, a diffuser with four exit outlets will allow dispensing of four areas of product. If configured, a trigger pull corresponds to a metered dose of product is dispensed and the diffuser and valve housing prevent substantial leakage of product.

[0092] Piston 34 will continue to move towards the end of container 40 with continued application of pressure (i.e., each pull of trigger 32), thereby dispensing product 80. When pusher plate 90 has reached an abutting position, the mating relationship ensures that a maximumamount of product housed within pouch 60 has been dispensed. Packaging system 20 can then be removed from dispensing system 30 and replaced with a new system. As set forth above, in some embodiments, container 40, valve housing 120, diffuser, and / or pusher plate 90 can be used repeatedly such that only pouch 60 is replaced.

[0093] In any of the embodiments disclosed herein, the initiation pressure is the pressure required to rupture the sealant layer sufficiently to permit the product to flow through the valve. The initiation pressure of a pouch is a significant factor in the “feel” of the pouch to a user and the effectiveness of the function of the pouch. In one example, if the initiation pressure is lower than a lower pressure threshold, the valve will be very slow to close or may not close at all. Valves with very low initiation pressures may allow product to leak or to be dispensed with very little external force. For example, the product may leak out of the pouch with the small force applied to the pouch when a user merely picks up the pouch. This can result in dispensing the product from the pouch when the user does not intend to dispense the product from the pouch. In some embodiments intended for dispenser systems, the lower pressure threshold is at or about 20 Ib-f when tested according to Opening Test recited in the example section herein.

[0094] In another example, if the initiation pressure is higher than an upper pressure threshold, the user will need to apply a significant force on the exterior of the pouch in order to induce sufficient pressure in the product to dispense the product. Not only may it be difficult for a user to apply such a force to the exterior of the pouch, such a significant force applied by the user can cause damage to the pouch. Examples of such damage include deformation of one of the first and second panels where the user exerts the force, deformation of one of the first and second panels due to bulging from the product, breaching of a seal between the first and second panels, and the like. In addition, when the valve opens only after reaching or exceeding the upper pressure threshold, the flow rate through the valve may be very high due to the high pressure in the product. This may result in the user dispensing a higher volume of the product than desired as soon as the valve is opened. In some embodiments intended for dispenser systems, the upper pressure threshold is at or about 80 Ib-f when tested according to Opening Test recited in the example section herein. In an embodiment, the opening force is between 30 and 70 Ib-f when tested according to Opening Test recited in the example section herein.

[0095] Tn some embodiments, pouches with valves having an initiation pressure in a specific pressure range within the functional pressure range may be particularly adept for certain settings. In some embodiments, it may be advantageous for the specific pressure range to have a lower specific pressure threshold that is higher than the lower pressure threshold of the functional pressure range. For packages included valves having an initiation pressure at or above the lower specific pressure threshold may exhibit desirable “spring back” characteristics, such as faster closing of the valve as the user reduces the force on the exterior of the pouch, greater likelihood that the valve will not leak when dispensing is not intended, and the like. In some embodiments, it may be advantageous for the specific pressure range to have an upper specific pressure threshold that is lower than the upper pressure threshold of the functional pressure range. Valves having an initiation pressure at or below the upper specific pressure threshold may be easier for a user to open (e g., less force needs to be applied to the exterior of the pouch to open the valve), the flow rate of the product out of the pouch may be more easily controlled, and the like. In some embodiments, it may be advantageous for the specific pressure range to have a lower specific pressure threshold that is higher that the lower pressure threshold of the functional pressure range and an upper specific pressure threshold that is lower that the upper pressure threshold of the functional pressure range.

[0096] In some embodiments it is desirable for the pouch spout to reduce spillage of the product inside. One such solution is illustrated in Fig. 11 . Fig. 11 depicts a variation of a pouch 300. The pouch includes a first panel 304 and a second panel 306. In the depicted exploded view, the first and second panels 304 and 306 are separated from each other; however, the first and second panels 304 and 306 would otherwise be sealed to each other to form the pouch 300, including a main section 314 and a channel section 316 of the pouch 300. For example, the first and second panels 304 and 306 can be sealed to each other along one or both longitudinal sides of the main section 314 and the channel section 316. Although not shown in Fig. 11, a product can be disposed in the main section 314 of the pouch 300 and the product is capable of flowing from the main section 314, through the channel section 316, and out of a tip 312. A dispensing path 332 of the product through the channel section 316 and out of the tip 312 is indicated in the figure by an arrow. In the depicted embodiment, the main section 314 has a substantially constant width and the channel section 316 has a narrowing width that narrows from the width of the main section 314 to the width of the tip 312. In the depicted embodiment, the tip 312 issubstantially centered between the sides of the main section 314 (sometimes called a “centered tip” design).

[0097] The pouch 300 includes a valve 324 that extends transversely across the channel section 316. The valve 324 may include a curve that extends transversely across the channel section 316. The curve in the valve 324 is configured such that, when the product flows through the curve (e.g., along the path 332), the product flows by a convex side of the first panel 304 in the curve and a concave side of the second panel 306 in the curve. The curve in the valve 324 includes a portion 334 of the first panel 304 and a portion 336 of the second panel 306. In some embodiments, the portion 334 of the first panel 304 that includes the curve is less rigid than the portion 336 of the second panel 306 that includes the curve. In the depicted embodiment, and optionally, the first panel 304 includes a film 344 and the second panel 306 includes a film 346. The film 346 of the second panel 306 has a rigidity that is greater than the film 344 of the first panel 304 so that, in the valve 324, the product passes by the concave side of the more rigid film 346 and the convex side of the less rigid film 344. For example, the film 346 can have a greater thickness and / or a higher modulus of elasticity than the film 344.

[0098] In embodiments, the first panel 304 includes the film 344 and the second panel 306 includes the film 346 and an optional stiffening layer 340. As can be seen in the depicted embodiment, the path 332 of the product, when passing through the valve 324, passes by the concave side of the stiffening layer 340. In some embodiments, the stiffening layer 340 has a rigidity that is greater than a rigidity of each of the film 344 of the first panel 304 and the film 346 of the second panel 306. In some embodiments, the film 344 and the film 346 have substantially the same rigidity. For example, the film 344 and the film 346 can be formed from a single sheet of film that is folded between the film 344 and the film 346. Where the film 344 and the film 346 have substantially the same rigidity, the portion 336 of the second panel 306 has a greater rigidity than the portion 334 of the first panel 304 due to the additional rigidity of the stiffening layer 340. In some embodiments, the rigidity of the stiffening layer 340 is substantially greater than the rigidity of the film 346. The pouch 300 also includes a frangible seal 342. In some embodiments, the frangible seal 342 is located between the main section 314 and the valve 324. In the depicted embodiment, the frangible seal 342 includes two labels. Other embodiments contemplate a single label where the peelable sealant adheres directly to a panel or stiffeninglayer as described herein. An outer face of a first label is permanently adhered to the film 344 and an outer face of a second label is permanently adhered to one panel or if it present, stiffening layer 340. In other embodiments, the outer face of the second label can be permanently adhered to the film 346. In the exploded view shown in Fig 11, the inner faces of the labels are separated from each other; however, the inner faces of the labels may not otherwise be separated from each other.

[0099] In some embodiments, before the first dispensing of the product from the pouch 300, a peelable sealant layer is positioned adjacent to each of the inner surfaces of the two labels. In this way, the product disposed in the main section 314 is prevented from flowing to the valve 324 by the frangible seal 342. The peelable sealant can have a seal strength, such that a user can break the seal by exerting an external force on the pouch to induce a pressure in the product that exceeds the seal strength of the frangible seal 342.

[0100] In the depicted embodiment shown in Fig. 12, a similar application as that shown in Fig. 11 is depicted. The main section 414 has a substantially constant width, and the channel section 416 has a narrowing width that narrows from the width of the main section 414 to the width of the tip 412. In the depicted embodiment, the tip 412 is substantially aligned with one side of the pouch 400 (sometimes called a “piping bag” design).

[0101] The pouch includes a first panel 404 and a second panel 406. In the depicted exploded view, the first and second panels 404 and 406 are separated from each other; however, the first and second panels 404 and 406 would otherwise be sealed to each other to form the pouch 400, including a main section 414 and a channel section 416 of the pouch 400. For example, the first and second panels 404 and 406 can be sealed to each other along one or both longitudinal sides of the main section 414 and the channel section 416. Although not shown in Fig. 12, a product can be disposed in the main section 414 of the pouch 400 and the product is capable of flowing from the main section 414, through the channel section 416, and out of a tip 412. A dispensing path 432 of the product through the channel section 416 and out of the tip 412 is indicated in the figure by an arrow.

[0102] The pouch 400 includes a valve 424 that extends transversely across the channel section 416. The valve 424 may include a curve that extends transversely across the channelsection 416. The curve in the valve 424 is configured such that, when the product flows through the curve (e.g., along the path 432), the product flows by a convex side of the first panel 404 in the curve and a concave side of the second panel 406 in the curve. The curve in the valve 424 includes a portion 434 of the first panel 404 and a portion 436 of the second panel 406. In some embodiments, the portion 434 of the first panel 404 that includes the curve is less rigid than the portion 436 of the second panel 406 that includes the curve. In the depicted embodiment, and optionally, the first panel 404 includes a film 444 and the second panel 406 includes a film 446. The film 446 of the second panel 406 has a rigidity that is greater than the film 444 of the first panel 404 so that, in the valve 424, the product passes by the concave side of the more rigid film 446 and the convex side of the less rigid film 444. For example, the film 446 can have a greater thickness and / or a higher modulus of elasticity than the film 444.

[0103] In embodiments, the first panel 404 includes the film 444 and the second panel 406 includes the film 446 and an optional stiffening layer 440. As can be seen in the depicted embodiment, the path 432 of the product, when passing through the valve 424, passes by the concave side of the stiffening layer 440. In some embodiments, the stiffening layer 440 has a rigidity that is greater than a rigidity of each of the film 444 of the first panel 404 and the film 446 of the second panel 406. In some embodiments, the film 444 and the film 446 have substantially the same rigidity. For example, the film 444 and the film 446 can be formed from a single sheet of film that is folded between the film 444 and the film 446. Where the film 444 and the film 446 have substantially the same rigidity, the portion 436 of the second panel 406 has a greater rigidity than the portion 434 of the first panel 404 due to the additional rigidity of the stiffening layer 440. In some embodiments, the rigidity of the stiffening layer 440 is substantially greater than the rigidity of the film 446. The pouch 400 also includes a frangible seal 442. In some embodiments, the frangible seal 442 is located between the main section 414 and the valve 424. In the depicted embodiment, the frangible seal 442 includes two labels. Other embodiments contemplate a single label where the peelable sealant adheres directly to a panel or stiffening layer as described herein. An outer face of a first label is permanently adhered to the film 444 and an outer face of a second label is permanently adhered to one panel or if present, stiffening layer 440. In other embodiments, the outer face of the second label can be permanently adhered to the film 446. In the exploded view shown in Fig 12, the inner faces of the labels are separatedfrom each other; however, the inner faces of the labels may not otherwise be separated from each other.

[0104] In some embodiments, before the first dispensing of the product from the pouch 400, a peelable sealant layer is positioned adjacent to each of the inner surfaces of the two labels. In this way, the product disposed in the main section 414 is prevented from flowing to the valve 424 by the frangible seal 442. The peelable sealant can have a seal strength, such that a user can break the seal by exerting an external force on the pouch to induce a pressure in the product that exceeds the seal strength of the frangible seal 442.

[0105] Examples:

[0106] Various labels were manufactured and adhered to test pouches. For consistency, the panels used for the body film are polyethylene based multilayer films having a total thickness of 2.5 mil (0.0635 mm) commercially available as CFP250B from Cryovac. A single label was used with a permeant sealant adhered to one panel and a peelable sealant adhered to the other panel. Figs. 5-6 provide a representative drawing of the assembly.

[0107] A multilayer label having a 3.5 mil thickness was manufactured having the following structure with layer 1 being distinct between the examples as described below.

[0108] Comparative:

[0109] The body film and multilayer label described above were used to make a package with Layer 1 of multilayer label being a blend of: a. 64% Polyethylene, Linear Low Density b. 30% Polystyrene, Impact-Modified (HIPS), and c. 6% Styrene / Ethylene / Butene Terpolymer (SEBS).

[0110] Example 1:[OHl] The body film and multilayer label described above were used to make a package with Layer 1 of multilayer label being a blend of: a. 44% Polyethylene, Linear Low Density, b. 30% Polystyrene, Impact-Modified (HIPS), c. 20% Zinc Neutralized Ionomer, and d. 6% Styrene / Ethylene / Butene Terpolymer (SEBS).

[0112] Hot tack test:

[0113] The samples were sealed using a J&B HotTack Tester model 4000 to evaluate hot tack strength. The samples were measured in accordance with ASTM F1921 sealed at a temperature as reported in Table 1 below with a seal pressure of 0.15 N / mm2with a seal time of 1 second, a cool time of 0.2 seconds, a peel speed of 200 mm / s and a sample width of 25.4mm. The experiment was repeated 3 times for each sample at each temperature and the average of the results is reported below in Table 1.

[0114] Table 1

[0115] As shown in Table 1, and the corresponding graph depicted in Fig. 13, Example 1 showed an improved heat seal profde over the broad temperature range. Especially when sealed at a temperature range of 130-150°C. In embodiments disclosed herein, the package has a hot tack of less than 6 N measured in accordance with ASTM Fl 921 when sealed at a temperature 135-140°C sealed at a pressure of 0.15 N / mm2with a seal time of 1 second, a cool time of 0.2 seconds, a peel speed of 200 mm / s and a sample width of 1 inch. This data is believed to corelate to real world testing in which products packaged with the films of Example 1 demonstrated much more consistent opening characteristics in use.

[0116] Seal strength

[0117] The samples were sealed using a Sencorp Systems, Inc. Model no: 12AS / 1 to evaluate seal strength. The samples were measured in accordance with ASTM F88 with the following parameters. Seal time 1.0 seconds and pressure of 63 psi. The seal bar temperature is that reporting in Table 2 along with the maximum seal strength values. The data is also reproduced in a graphical representation as Fig. 14. Seal strength tested on an Instron Model no: 5543 at a rate of 10 in / min. The samples were prepared on a Twing-Albert J DC Precision Sample Cutter calibrated to produce 1-inch wide samples. The average of four samples for each datapoint was recorded.

[0118] Table 2

[0119] As shown in Table 2, and depicted in Fig. 14, Example 1 demonstrates improved seal performance by having a lower seal strength over a wider sealing temperature as compared to Comparative. Given average human grip strength, having an opening force of less than 1.60 Ibf is desired. Having too high of a seal strength requires increased pressure for opening. In embodiments, the seal strength is less than 1 Ibf / in measured in accordance with ASTM F88 when sealed at a temperature 135-140°C sealed at a pressure of 63 psi with a seal time of 1.0 seconds tested at a rate of lOin / min with a sample size width of 1 inch. In other embodiments, the seal strength is between 0.5 and 1.2 Ibf / in measured in accordance with ASTM F88 when sealed at a temperature throughout any of the ranges of 125-150°C, 125-145°C, 125-140°C, 130- 150°C, 130-145°C, 130-140°C or 135-140°C sealed at a pressure of 63 psi with a seal time of 1.0 seconds tested at a rate of lOin / min with a sample size width of 1 inch.

[0120] Opening test

[0121] To simulate real world results a Mark 10 ESM 303 Compression Tester was used. This instrument compresses the pouch until it opens out of the frangible seal. The instrument takes a reading of the maximum force applied to the pouch at the time the frangible seal opens. The spout of the pouch is angled so that the light blue side is slightly folded over on itself (folded toward the center seal side). Proper orientation is important otherwise product is forced against the pouch body material instead of concentrating force on the label. While the pouch will still open, the recorded force may be slightly higher than expected and more variable. The pouch is held loosely in the middle so that the product is not tight against the spout end. When within the tube, the spout lines up with the slot in the slot piece. From the underside of the slot piece, the spout of the pouch is grasped and pulled though the oval taking care to center the spout from side to side in the oval. When viewing the slot piece from the side, the spout should protrude approximately 1 / 2 inch past the bottom of the piece. Once the pouch is lowered all the way into plastic tube, the 'tail' of the pouch is folded or tucked into the tube to minimize the bag moving past the floating pusher plate during the test. The loaded plastic tube and slot piece are loaded onto a support piece and placed onto the tray. The floating pusher plate is placed on top of the pouch in the plastic tube. The loaded test apparatus is transferred to the instrument.

[0122] Once loaded, ensure that metal pusher plate is centered above the floating pusher plate and the plastic tube. Press the ZERO button on the Force Gauge and the ZERO TRAVEL button on the Digital Control Panel. Press the downward pointing arrow on the Digital Control Panel to begin the compression test. Once the bag opens, the metal pusher will stop advancing and the Force Gauge will automatically return to its initial position. Record the data point from the Force Gauge, which shows the pounds of force required to break the seal. The reading is the small number in the upper right corner of the Force Gauge display. Remove clean and repeat for at least 5 samples.

[0123] A large sample size of pouches was made from the fdms as described as Example 1 and Comparative and filled on an Onpack 3002 with a fill temperature of 170°F +-5 degrees. Approximately 1.9 to 2.1 pounds of product was filled into the pouch. Pouches were sealed after filling at a temperature of 130 - 145 °C with a seal time of 0.3 to 0.5s. The Opening Test as described above was performed to determine the opening force on a bench test to simulate real world applications. A significant sample size was conducted and the distribution plotted in thecharts shown in Figs. 15-16. The results are reported below in Table 3 below and depicted on Figs. 15-16. FT= Field Test.

[0124]

[0125] Figs. 15-16 show the good and repeatable opening force of Example 1 not seen by Comparative which has a wider distribution. The repeatability is evidenced by both different locations and different fill materials. Having a more consistent opening force is desirable and evidenced by results of Example 1 in contrast to the results of Comparative.

[0126] For purposes of this disclosure, terminology such as “upper,” “lower,” “vertical,” “horizontal,” “inwardly,” “outwardly,” “inner,” “outer,” “front,” “rear,” and the like, should be construed as descriptive and not limiting the scope of the claimed subject matter. Further, the use of “including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless limited otherwise, the terms “connected,” “coupled,” and “mounted” and variations thereof herein are used broadly and encompass direct and indirect connections, couplings, and mountings. Unless stated otherwise, the terms “substantially,” “approximately,” and the like are used to mean within 5% of a target value.

[0127] All references to (and incorporations by reference of) ASTM protocols are to the most-recently published ASTM procedure as of the priority (i.e., original) fding date of this patent application in the United States Patent Office unless stated otherwise.

[0128] The principles, representative embodiments, and modes of operation of the present disclosure have been described in the foregoing description. However, aspects of the present disclosure which are intended to be protected are not to be construed as limited to the particular embodiments disclosed. Further, the embodiments described herein are to be regarded as illustrative rather than restrictive. It will be appreciated that variations and changes may be made by others, and equivalents employed, without departing from the spirit of the present disclosure. Accordingly, it is expressly intended that all such variations, changes, and equivalents fall within the spirit and scope of the present disclosure, as claimed.

[0129] This written description uses examples to disclose the invention and also to enable any person skilled in the art to practice the invention, including making and using any devices orsystems and performing any incorporated methods. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal language of the claims.

[0130] Non-limiting Embodiments:A. A film package comprising: a. a first panel having an inner surface; b. a second panel having an inner surface; portions of the inner surfaces of the first and second panels being in communication with each other to form a pouch defining a main section and a channel section; c. a label comprising a peelable sealant layer and an outer layer opposite the sealant layer the outer layer opposite the sealing layer being in direct contact with a portion of the inner surface of the first panel; a portion of the inner surface of the first panel which defines the main section being free from contact of the label; the peelable sealant layer comprising: i . 40 to 65 wt% of an ethylene copolymer based on the total weight of the peelable sealant layer; ii. 20 to 40 wt% of an impact modified polystyrene based on the total weight of the peelable sealant layer; iii. 5 to 10 wt% of a styrene block copolymer based on the total weight of the peelable sealant layer; and iv. 10 to 30 wt% an ionomer compound based on the total weight of the peelable sealant layer.B. The multilayer film of Embodiment A further wherein the sealant layer is in direct contact with a portion of the inner surface of the second panel.C. The multilayer film of any of the previous Embodiments wherein the ethylene copolymer of the sealant layer has a density of between 0.89 to 0.930 g / cm3as measured in accordance with ASTM D-792.D. The multilayer film of any of the previous Embodiments wherein the impact modified polystyrene of the sealant layer comprises a dispersed poly-butadiene phase.E. The multilayer film of any of the previous Embodiments wherein the styrene block copolymer of the sealant layer is a copolymer of styrene with, ethylene or butadiene or a terpolymer of styrene with ethylene and butadiene.F. The multilayer film of Embodiment E wherein the styrene block copolymer is chosen from SEBS, SES and SBS.G. The multilayer film of any of the previous Embodiments wherein the ionomer compound of the sealant layer is a zinc neutralized ionomer compound.H. The multilayer film of any of the previous Embodiments further comprising a spout at the end of the channel section along at least a portion of the width of the channel section, wherein the first panel has first width, and the label has a second width, the second width being less than 50% of the first width and the spout and the label are each located near the proximate end of the pouch.I. The multilayer film structure of Embodiment H wherein the label has a length that is less than 25% the length of the first film panel.J. The multilayer film structure of any of the previous Embodiments wherein the sealant layer has hot tack of less than 6 N measured in accordance with ASTM Fl 921 when sealed at a temperature of 135-140°C sealed at a pressure of 0.15N / mm2with a seal time of 1 second, a cool time of 0.2 seconds, a peel speed of 200 mm / s and a sample width of 1 inch.K. The multilayer fdm structure of Embodiment B wherein the interface between the peelable sealant layer and the inner surface of the second panel has a seal strength of less than 1.0 Ibf / in measured in accordance with ASTM F88 when sealed at a temperature of 135-140°C at a pressure of 63 psi with a seal time of 1.0 seconds tested at a rate of 10 in / min with a 1-inch wide sample.L. The multilayer fdm structure of Embodiment B wherein the interface between the peelable sealant layer and the inner surface of the second panel has a seal strength of between 0.5-1.2 Ibf / in measured in accordance with ASTM F88 when sealed at a temperature throughout any of the ranges of 125-150°C, 125-145°C, 125-140°C, 130-150°C, 130-145°C, 130-140°C or 135-140°C at a pressure of 63 psi with a seal time of 1.0 seconds tested at a rate of 10 in / min with a 1-inch wide sample.M. The multilayer fdm structure of Embodiment I wherein the sealed fdm structure has an opening force of less than 80 Ibf measured according to the Opening Test.N. The multilayer fdm structure of Embodiment M wherein the opening force of at least 10 samples results in a standard deviation of less than 10.O. A sealant layer composition comprising: a. 40 to 65 wt% of an ethylene copolymer based on the total weight of the sealant layer; b. 20 to 40 wt% of an impact modified polystyrene based on the total weight of the sealant layer; c. 5 to 10 wt% of a styrene block copolymer based on the total weight of the sealant layer; and d. 10 to 30 wt% an ionomer compound based on the total weight of the sealant layer.P. The sealant layer composition of Embodiment O wherein the ionomer compound is a zinc ionomer compound.Q. The sealant layer composition of any of Embodiments O-P wherein the impact modified polystyrene of the sealant layer comprises a dispersed poly-butadiene phase.R. The sealant layer composition of any of the Embodiments O-Q wherein the styrene block copolymer of the sealant layer is a copolymer of styrene with, ethylene or butadiene or a terpolymer of styrene with ethylene and butadiene.S. A method for creating a fluid filled package comprising the steps of: providing a film package comprising: a. a first panel having an inner surface; b. a second panel having an inner surface; portions of the inner surfaces of the first and second panels being in communication with each other to form a pouch defining a main section and a channel section; c. a label comprising a peelable sealant layer and an outer layer opposite the sealant layer the outer layer opposite the sealing layer being in direct contact with a portion of the inner surface of the first panel; a portion of the inner surface of the first panel which defines the main section being free from contact of the label; the peelable sealant layer comprising: i. 40 to 65 wt% of an ethylene copolymer based on the total weight of the peelable sealant layer; ii. 20 to 40 wt% of an impact modified polystyrene based on the total weight of the peelable sealant layer; iii. 5 to 10 wt% of a styrene block copolymer based on the total weight of the peelable sealant layer; andiv. 10 to 30 wt% an ionomer compound based on the total weight of the peelable sealant layer; fdling the film package with a fluid; and sealing the film package thereby sealing the fluid within the film package.T. The method of Embodiment S wherein the fluid is filled at a temperature of 120- 200 °F.U. The method of any of Embodiments S-T further wherein the sealant layer is in direct contact with a portion of the inner surface of the second panel.V. The method of any of Embodiments S-U wherein the ethylene copolymer of the sealant layer has a density of between 0.89 to 0.930 g / cm3as measured in accordance with ASTM D-792.W. The method of any of Embodiments S-V wherein the impact modified polystyrene of the sealant layer comprises a dispersed poly-butadiene phase.X. The method of any of Embodiments S-W wherein the styrene block copolymer of the sealant layer is a copolymer of styrene with, ethylene or butadiene or a terpolymer of styrene with ethylene and butadiene.Y. The method of Embodiment X wherein the styrene block copolymer is chosen from SEBS, SES and SBS.Z. The method of any of Embodiments S-Y wherein the ionomer compound of the sealant layer is a zinc neutralized ionomer compound.AA. The method of any of Embodiments S-Z further comprising a spout at the end of the channel section along at least a portion of the width of the channel section, wherein the first panel has first width, and the label has a second width, thesecond width being less than 50% of the first width and the spout and the label are each located near the proximate end of the pouch.BB. The multilayer film structure of Embodiment AA wherein the label has a length that is less than 25% the length of the first film panel.CC. The method of any of Embodiments S-BB wherein the sealant layer has hot tack of less than 6 N measured in accordance with ASTM Fl 921 when sealed at a temperature of 135-140°C sealed at a pressure of 0.15 N / mm2with a seal time of 1 second, a cool time of 0.2 seconds, a peel speed of 200 mm / s and a sample width of 1 inch.DD. The method of Embodiment T wherein the interface between the peelable sealant layer and the inner surface of the second panel has a seal strength of less than 1.0 Ibf / in measured in accordance with ASTM F88 when sealed at a temperature of 135-140°C at a pressure of 63 psi with a seal time of 1.0 seconds tested at a rate of 10 in / min with a 1-inch wide sample.EE. The method of Embodiment T wherein the interface between the peelable sealant layer and the inner surface of the second panel has a seal strength of between 0.5- 1.2 Ibf / in measured in accordance with ASTM F88 when sealed at a temperature throughout any of the ranges of l25-150°C, 125-145°C, 125-140°C, 130-150°C, 130-145°C, 130-140°C or 135-140°C at a pressure of 63 psi with a seal time of 1.0 seconds tested at a rate of 10 in / min with a 1-inch wide sample.FF. The method of Embodiment BB wherein the sealed fdm structure has an opening force of less than 80 Ibf measured according to the Opening Test.GG. The method of Embodiment FF wherein the opening force of at least 10 samples results in a standard deviation of less than 10.HH. The use of any of the previous Embodiments to form a fluid filled pouch or to dispense a fluid from the pouch.PARTS LIST:• 10 system• 20 packaging system• 25 longitudinal axis• 30 system• 32 trigger• 34 piston• 36 barrel• 38 wall• 40 container• 42 first end• 50 pouch• 51 permanent sealant• 51a permanent sealant• 51b permanent sealant• 53 peelable sealant• 53a peelable sealant• 53b peelable sealant• 54 top edge• 55 first label face• 56 label• 57 second label face• 58 spot seals• 60 pouch• 62 first transverse seal• 64 second transverse seal• 66 first side fold• 68 second side fold• 70 frangible seal• 71 longitudinal seal• 72 spout• 74 panel• 76 panel• 77 first pouch end• 78 second pouch end• 80 product• 90 pusher plate• 100 pouch• 102 product• 104 panel• 106 panel• 108 transverse seal• 110 channel seal• 112 tip• 114 main section• 116 channel section• 118 pressure• 120 valve housing• 123 outlets• 132 outer label faces• 133 respective inner faces• 300 pouch• 303 ESM• 304 panel• 306 panel• 312 tip• 314 main section• 316 channel section• 324 valve• 332 path• 334 portion• 336 portion• 340 stiffening layer• 342 frangible seal• 344 film• 346 film• 400 pouch• 404 panel• 406 panel• 412 tip• 414 main section• 416 channel section• 424 valve• 432 path• 434 portion• 436 portion• 440 stiffening layer• 442 frangible seal• 444 film• 446 film

Claims

What is claimed is:

1. A film package comprising: a. a first panel having an inner surface; b. a second panel having an inner surface; portions of the inner surfaces of the first and second panels being in communication with each other to form a pouch defining a main section and a channel section; c. a label comprising a peelable sealant layer and an outer layer opposite the sealant layer the outer layer opposite the sealing layer being in direct contact with a portion of the inner surface of the first panel; a portion of the inner surface of the first panel which defines the main section being free from contact of the label; the peelable sealant layer comprising: v. 40 to 65 wt% of an ethylene copolymer based on the total weight of the peelable sealant layer; vi. 20 to 40 wt% of an impact modified polystyrene based on the total weight of the peelable sealant layer; vii. 5 to 10 wt% of a styrene block copolymer based on the total weight of the peelable sealant layer; and viii. 10 to 30 wt% an ionomer compound based on the total weight of the peelable sealant layer.

2. The film package of claim 1 further wherein the sealant layer is in direct contact with a portion of the inner surface of the second panel.

3. The film package of claim 1 wherein the ethylene copolymer of the sealant layer has a density of between 0.89 to 0.930 g / cm3as measured in accordance with ASTM D-792.

4. The film package of claim 1 wherein the impact modified polystyrene of the sealant layer comprises a dispersed poly-butadiene phase.

5. The film package of claim 1 wherein the styrene block copolymer of the sealant layer is a copolymer of styrene with, ethylene or butadiene or a terpolymer of styrene with ethylene and butadiene.

6. The film package of claim 5 wherein the styrene block copolymer is chosen from SEBS, SES and SBS.

7. The film package of claim 1 wherein the ionomer compound of the sealant layer is a zinc neutralized ionomer compound.

8. The film package of claim 1 further comprising a spout at the end of the channel section along at least a portion of the width of the channel section, wherein the first panel has first width, and the label has a second width, the second width being less than 50% of the first width and the spout and the label are each located near the proximate end of the pouch.

9. The film package of claim 8 wherein the label has a length that is less than 25% the length of the first film panel.

10. The film package of claim 1 wherein the sealant layer has hot tack of less than 6 N measured in accordance with ASTM F1921 when sealed at a temperature of 135-140°C sealed at a pressure of 0.15 N / mm2with a seal time of 1 second, a cool time of 0.2 seconds, a peel speed of 200 mm / s and a sample width of 1 inch.

11. The film package of claim 2 wherein the interface between the peelable sealant layer and the inner surface of the second panel has a seal strength of less than 1.0 Ibf / in measured in accordance with ASTM F88 when sealed at a temperature of 135-140°C at a pressure of 63 psi with a seal time of 1.0 seconds tested at a rate of 10 in / min with a 1-inch wide sample.

12. The film package of claim 2 wherein the interface between the peelable sealant layer and the inner surface of the second panel has a seal strength of between 0.5- 1.2 Ibf / in measured in accordance with ASTM F88 when sealed at a temperature throughout any of the ranges of l25-150°C, 125-145°C, 125-140°C, 130-150°C, 130-145°C, 130-140°C or 135-140°C at a pressure of 63 psi with a seal time of 1.0 seconds tested at a rate of 10 in / min with a 1-inch wide sample.

13. The film package of claim 9 wherein the sealed film structure has an opening force of less than 80 Ibf measured according to the Opening Test.

14. The film package of claim 13 wherein the opening force of at least 10 samples results in a standard deviation of less than 10.

15. A sealant layer composition comprising: a. 40 to 65 wt% of an ethylene copolymer based on the total weight of the sealant layer; b. 20 to 40 wt% of an impact modified polystyrene based on the total weight of the sealant layer; c. 5 to 10 wt% of a styrene block copolymer based on the total weight of the sealant layer; and d. 10 to 30 wt% an ionomer compound based on the total weight of the sealant layer.

16. The sealant layer composition of claim 15 wherein the ionomer compound is a zinc ionomer compound.

17. The sealant layer composition of claim 15 wherein the impact modified polystyrene of the sealant layer comprises a dispersed poly-butadiene phase.

18. The sealant layer composition of claim 15 wherein the styrene block copolymer of the sealant layer is a copolymer of styrene with, ethylene or butadiene or a terpolymer of styrene with ethylene and butadiene.

19. A method for creating a fluid filled package comprising the steps of: providing a film package comprising: a. a first panel having an inner surface; b. a second panel having an inner surface; portions of the inner surfaces of the first and second panels being in communication with each other to form a pouch defining a main section and a channel section; c. a label comprising a peelable sealant layer and an outer layer opposite the sealant layer the outer layer opposite the sealing layer being in direct contact with a portion of the inner surface of the first panel; a portion of the inner surface of the first panel which defines the main section being free from contact of the label; the peelable sealant layer comprising: v. 40 to 65 wt% of an ethylene copolymer based on the total weight of the peelable sealant layer; vi. 20 to 40 wt% of an impact modified polystyrene based on the total weight of the peelable sealant layer; vii. 5 to 10 wt% of a styrene block copolymer based on the total weight of the peelable sealant layer; and viii. 10 to 30 wt% an ionomer compound based on the total weight of the peelable sealant layer; filling the film package with a fluid; and sealing the film package thereby sealing the fluid within the film package.

20. The method of claim 19 wherein the fluid is filled at a temperature of 120-200 °F.

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