Combination container and bag

Bag-on-container assemblies and bag-in-container assemblies are disclosed. The container may include a paperboard box having a front wall, a rear wall, a pair of opposed side walls, a plurality of flaps capable of forming a bottom wall and a plurality of flaps capable of forming a top wall. The inside surfaces of the box walls, including the outwardly facing strips, may have a thermal plastic coating thereon. The bag component of each type of assembly may include a closure member for to enable resealing of the bag component.

FIELD OF THE INVENTION

The present invention relates to packaging and containers. More particularly, the present invention relates to a combined container and bag and to its method of manufacture.

BACKGROUND OF THE INVENTION

Flowable materials including foodstuffs such as cereals and the like and numerous other products have been sold in packaging such as boxes for many years. Such packaging is desirable since the packages protect the product from spoilage and physical damage. These packages also stack easily for shipping and for display on shelves. Packages such as boxes employ an inner bag that contains the product within the box. After the bag is opened and the desired amount of product removed, the bag is resealed, usually by folding the top of the bag over upon itself.

Such inner bags, however, are frequently difficult to open and almost never reseal effectively.

Recently, products have been proposed wherein the bag is outside of the box rather than inside the box. U.S. Pat. No. 6,908,422, shows a paperboard box inserted into a plastic bag that has a closeable zippered top. The box is inserted while in its collapsed form and is manipulated into an open position when it is desired to fill the box. This can create problems during use since the entire box is in the bag and can damage the bag when attempting to open the box.

Published U.S. Patent Application No. U.S. 2005/0194386 is directed to a zippered, plastic bag box cover for resealing paperboard boxes. The zippered plastic bag is positioned at the top of the box. The bag has an open bottom and elastic strip around the bottom edge of the bag to secure the bag to the box. This arrangement does not appear to provide an effective seal.

A similar arrangement is shown in U.S. Pat. No. 7,160,029. In the embodiment shown in FIG. 9b thereof, the lower edge of the bag includes a strip of adhesive at the bottom of the bag. While this may create a better seal in some instances, this seal does nothing to enable closure of the inner bag, nor to improve closure on the other end of the carton, thereby leaving the product inside the carton to be relatively unprotected from spoilage due to moisture and oxygen infiltration.

There is, therefore, a need for a combined container and bag that is capable of effectively sealing to the container. There is also a further need for a combined container and bag wherein the bag may be resealed after the bag has been opened.

SUMMARY OF THE INVENTION

In a first embodiment, there is provided a container that includes a container member and bag member, preferably a resealable bag member, where the bag member is disposed over the container member to produce a bag-on-container type assembly.

In a second embodiment, the bag member may be disposed within the container member to produce a bag-in-container type assembly.

In both bag-on-container and bag-in-container type assemblies, the container member may have any desired configuration such as tubular containers and box type containers. Preferably, the container member is in the form of a box that includes a front wall, a rear wall, a pair of opposed sidewalls and a plurality of flaps. The box may be formed from a box blank that includes a plurality of flaps that may be manipulated to form a bottom wall of the box container. The front, rear and sidewalls, as well as flaps, may be manipulated to form a box type container.

Where the container member is in the form of a box, in one aspect, the upper end of each of the front wall, rear wall and side walls of the box may be folded outwardly and downwardly to enable interior surfaces of the upper ends of the box walls to form outwardly facing strips on the box blank. These facing strips may bear one or more coatings thereon such as thermoplastic coatings, adhesive coatings or combinations thereof to aid in securing of a bag member to the strips of the box blank to yield a bag-on-container type container.

Advantageously, a container that includes the container member and bag member in either bag-on-container type assembly or as a bag-in-container type assembly may enable achievement of product packing volumes greater than conventional packaging of equal size. This may enable use of fewer pallets, fewer trucks and less energy consumption in product shipment.

Advantageously, a container that includes the container member and bag member in either bag-on-container type assembly or as a bag-in-container type assembly may enable achievement of moisture ingress protection to as low as about 1 gram pr year to about 2 gms per year.

Other features and advantages of the invention will be readily apparent from the following detailed description of a preferred embodiment thereof taken in conjunction with the drawings.

SUMMARY OF THE INVENTION

In one aspect, a bag-on-container assembly is disclosed. The bag-on-container assembly includes a container member and a resealable bag member having an open end and a closed end, the container member having an access portion configured to provide an opening in the container member to access the interior of the container member wherein the open end of the bag member is secured to the exterior of container member over the access portion of the container member, and wherein the bag member is secured to the container member by a joining means suitable for achieving an airtight seal between the container member and the bag member. The closed end of the bag member may include a closure means to enable resealing of the closed end of the bag member. The closure means may be a linear fastener of a predetermined length such as a zipper.

The bag member of the bag-on-container assembly may have lower edge portions that bear adhesive to enable the bag member to be secured to container member such as by heat sealing to achieve an air tight seal.

The container member of the bag-on-container assembly may be in the form of a box that has front, rear and side walls wherein the upper ends of each of said front, rear and side walls are adapted to fold outwardly and downwardly whereby at least one interior surface of each of the upper ends provides one or more strips that has a thermal plastic coating thereon to enable the bag member to be heat sealed to one or more of the strips.

In another aspect, the invention relates to a bag-in-container assembly that includes a container member and a resealable, bag member having an open end and a closed end. The container member has an access portion configured to provide an opening in the container member to access the interior of the container member wherein the open end of the bag member is secured to at least one interior surface of the container member within the access portion of the container member. The closed end of the bag member may include a closure means such as a zipper to enable resealing of the closed end of the bag member. The zipper may be located at a corner of the closed end of the bag member. The bag member has lower edge portions that may bear adhesive to enable the bag member to be secured to an interior surface of the container member such as by heat sealing. The lower edge portions of the bag member may be secured to the interior of the container member above the bottom surface of the container member.

In a further aspect, the invention relates to a method of forming a bag-on-container assembly by providing a box blank suitable for forming a container member having a front wall, a rear wall, a pair of opposed side walls and a plurality of flaps capable of forming a bottom wall and wherein said front, rear and side walls have upper ends and lower ends and inside surfaces and outside surfaces. A bag member having an open end and a closed end, wherein the bag member has downwardly extending front and rear walls, is sealed to an exterior portion of the box blank while the blank is in a flat planar condition, and thereafter, the box blank is expanded to form a bag-on-container assembly. The bag member may include a resealable closure means such as a zipper to enable resealing of the closed end of the bag member. The zipper may be located at a corner of the bag member.

In yet another aspect, the invention relates to a method of forming a bag-in-container assembly. The method entails providing a mandrel suitable for supporting a bag member and a container member thereon, placing the bag member on the mandrel and placing the container member over the bag member on the mandrel, and applying pressure to the container member to join the bag member to the container member to yield a bag-in-container assembly.

Having summarized the invention, the invention is further described below by reference to the following detailed description.

DETAILED DESCRIPTION OF THE INVENTION

As used herein, the term “bag member” is understood to mean a receptacle formed from a material that may be sealed at one end whereby the receptacle has a closed end and an open end.

As used herein, the term airtight seal is understood to mean <0.1 liters/year of gas exchange between the seal between the bag and container and the atmosphere.

In the embodiments and variations in the bag-on-container and the bag-in-container assemblies of the invention a wide variety of materials may be employed. Materials that may be employed in manufacture of container member12employed in the bag-on-container and bag-in-container type assemblies include but are not limited to celluloses, metals, plastics and combinations thereof such as laminates of one or more of celluloses, metals and plastics. Laminates may include two or more layers. The materials employed in container member12may be metalized, coated with glass, or otherwise treated to enhance barrier properties.

Metals that may be employed to form container member12include but are not limited to aluminum, iron alloys such as steel, tin, and combinations thereof. Celluloses that may be employed to form container member12include but are not limited to celluloses such as cardboard, paperboard, cellophanes and combinations thereof. The celluloses may bear one or more coatings of materials such as one or more thermoplastics.

Thermoplastics that may be employed as coatings include but are not limited to olefins such as polyethylene, polybutylene and polypropylene, and copolymers thereof, ionomers such as ethylene copolymers that include acid groups partially neutralized with metal salts such as zinc, sodium, magnesium and lithium and combinations thereof. These ionomers are available from DuPont under the trade name Surlyn. The thickness of coatings such as thermoplastic coatings on cellulose materials such as paperboard and cardboard may vary from about 0.0001 inch to about 0.004 inches, preferably about 0.0003 inches to about 0.003 inches, more preferably about 0.0005 inches to about 0.002 inches.

Plastics that may be employed to form container member12include but are not limited to thermoplastics as well as thermosetting plastics. Thermoplastics that may be employed to form container member12include but are not limited to olefins such as polyethylene, polybutylene and polypropylene as well as copolymers thereof. Other polymers that may be employed include but are not limited to polyamides such as nylons, polyesters, polyvinylcarbonates, and cellophane and combinations thereof. Thermoplastics that may be employed include but are not limited to woven polyethylene such as Tyvek from DuPont.

Thermosetting plastics that may be employed to form container member12include but are not limited to polyimides, epoxies and mixtures thereof.

Adhesives that may be employed in bag-on-container type assemblies as well as in bag-in-container type assemblies include but are not limited to natural adhesives, synthetic adhesives, pressure sensitive adhesives or mixtures thereof. Adhesives employed typically may be bonded at temperatures of about 0° F. to about 300° F., preferably about 50° F. to about 200° F., more preferably about 72° F. to about 125° F.

The materials employed in bag member14for use in bag-on-container and bag-in-container type assemblies may be porous, non-porous or semi-permeable and may be made from a variety of materials. These materials include but are not limited to metals, celluloses, thermoplastics and combinations thereof such as laminates thereof.

Metals that may be employed to form bag member14include but are not limited to aluminum, tin, copper, silver, gold and combinations thereof such as laminates thereof. Metals may be employed in the form of foils that have a thickness of about 0.000001 inch to about 0.003 inch, preferably about 0.0003 inch to about 0.002 inch, more preferably about 0.00035 inch to about 0.0007 inch.

Thermoplastics that may be employed to form bag member14include but are not limited to olefins such as polyethylene, polypropylene, polybutylene and copolymers thereof. Other polymers that may be employed to form bag member14include but are not limited to polyamides such as nylon, polyesters such as polyethylene terephthalate, polyvinylchloride. Typically, the thickness of thermoplastic materials employed to form bag member14is about 0.0005 inches to about 0.0070 inches, preferably about 0.001 inch to about 0.006 inch, more preferably about 0.0015 inch to about 0.005 inch.

Laminates that may be employed to form bag member14include laminates of metal and thermoplastic where the thermoplastic is in the form of a continuous coating on the metal or discontinuous coating on the metal. Permeable materials such as micro-perforated thermoplastics, micro-perforated metal, semi-permeable membranes and combinations thereof also may be used in bag member14.

Where micro-perforated thermoplastic materials are employed, the thickness of the thermoplastic material employed to form bag member14is sufficient to enable bag member14to be manipulated into a desired configuration.

Referring toFIGS. 1-9where like reference numerals designate like elements, there are shown bag-on-container and bag-in-container type assemblies. Container member12employed in bag-on-container assemblies, as well as in a bag-in-container type assemblies such as that described hereinafter, may have any desired cross-sectional configuration. Cross-sectional configurations of container member12may include but are not limited to rectangular, square, hexagonal, circular, oval and combinations thereof.

Container member12may be scored, as well as alternatively perforated in various locations to facilitate opening of container member12to expose bag member14as well as alternatively to gain direct access to contents within container member12such as where bag member14is disposed over container member12.

In an illustrative but non-limiting example, container member12is scored or perforated vertically along the length of one or more portions of container member12. One or more horizontal scores or perforations also may be placed on container member12. The vertical and horizontal scores or perforations, alone or in combination, may facilitate access to the contents of container member12. The horizontal and vertical scores or perforations may intersect. In this illustrative example, scores or perforations are placed vertically and horizontally. It is understood, however, that scores or perforations may be placed at any desired location on container member12.

In both bag-on-container and bag-in-container type container assemblies, bag member14may be secured to container member12by a joining means such as adhesive, magnetic media, hook and claw fasteners such as Velcro. Adhesive bonding with or without application of heat. In a bag-on-container type assembly, adhesive may be present on interior surfaces of bag member14and bonded to the exterior of container member12in both a box blank, flattened condition as well as where container member12is in an expanded condition. Adhesive also may be present on selected portions of container member12or on the entire surface of container member12.

Container member12employed in each of the bag-on-container and bag-in-container type assemblies may be in any desired configuration. Where a box blank such as box blank52is employed to produce container member12, the edges of box blank52may be treated by skiving and hemming, or by hemming or flame treating to minimize presence of exposed, sharp edges and to improve resistance to fats/oils and liquids.

Container member12employed in each of the bag-on-container and bag-in-container type assemblies may be formed from materials that have a wide range of thicknesses. Typically, the thickness of the materials employed is about 0.003 inches or greater.

Where metals are employed to form container member12, the thickness of the metal may be about 0.00025 inch to about 0.007 inch, preferably about 0.0003 inch to about 0.004 inch, more preferably about 0.00035 inch to about 0.001 inch;

Where celluloses such as paperboard are employed to form container member12, the thickness of the paperboard may be about 0.008 inch to about 0.024 inch, preferably about 0.010 inch to about 0.018 inch, more preferably about 0.012 inch to about 0.016 inch;

Where plastics such as any one or more of thermoplastics and thermosetting plastics are employed to form container member12, the thickness of the plastic may be about 0.0001 inch to about 0.004 inch, preferably about 0.0075 inch to about 0.002 inch.

Corrugated structures as well as single wall, double wall and triple wall constructions also may be employed to form container member12. Corrugated structures that may be employed include but are not limited to structures such as micro-flute and e-flute structures as well as other grades of corrugated materials such as grades A, B C or D and the like. Corrugated structures may be metal fluted such as steel with paperboard and such as aluminum foil with paperboard.

Container member12preferably is in the form of a box that includes front wall18, rear wall20, opposed side walls22and24and a plurality of flaps26,28and30. Flaps26,28and30may be folded inwardly to form the bottom wall of container member12. The upper end of each of front wall18, rear wall20and side walls22,24may be folded outwardly and downwardly to form attachment strips such as strips32and34. Strips32and34may be may vary in width. Typically, the width of strips32and34is about 0.01% to about 50%, preferably about 0.05% to about 20% more preferably about 5% to about 10% of the width of one of the front, rear or side walls of container member12. Strips32and34may be folded back onto the outer surfaces of its respective wall and may be affixed to those outer surfaces by means such as glue.

In another aspect, container member12may be in the form of a box that has a hermetically sealed bottom. Hermetically sealed bottom sections may be made according to procedures described in U.S. Pat. No. 4185765, the teachings of which are incorporated by reference herein in their entirety. The hermetic seal may be formed by conduction heat sealing, induction sealing, ultrasonic sealing, drag sealing or combinations thereof.

In another embodiment of container member12, as shown inFIG. 10, container member12may include reinforcing member80. In this embodiment, reinforcing member80may be located, for example, to join opposing surfaces18and20of container member12. Reinforcing member80may be formed of the same or different materials as container member12

Bag member14that may be employed in any of the bag-on-container and bag-in-container type assemblies includes front wall36and rear wall38. The top portions of walls36and38are joined and the lower portions are open to form an open bottomed bag member14. In this configuration, bag member14is adapted to envelop a desired portion of container member12to produce a bag-on-container assembly. Also, in this configuration, bag member14may be adapted to be secured to the interior of container member12.

Front wall36of bag member14may include lower edge portions40for attachment to container member12in both bag-on-container and bag-in-container type assemblies. Similarly, rear wall38of bag member14may include lower edge portion42for attachment to container member12in both bag-on-container and bag-in-container type assemblies.

FIG. 1shows a bag-on-container type assembly10that includes a container member12in combination with bag member14where bag member14is disposed over the exterior of container member12. Bag member14may be disposed over a portion of the exterior of container member12or the entire exterior of container member12. Bag member14may be resealable or non-resealable, preferably resealable. Bag member14may be porous or non-porous, preferably non-porous.

Where bag member14is resealable, bag member14may be opened and resealed for multiple dispensing of product from container member12. Where bag member14is resealable, bag member14may be resealed by means of resealable closure16. Where zippers are employed as a resealable closure16, the zippers may be any one or more of press-to-close zippers and slidable type zippers. Closures such as zippers may be positioned to enable opening of bag member14across the entire length, width or height of bag member14. Resealable closures also may be positioned at any other location on bag member14such as at one or more corners of bag member14.

Bag member14, where employed in manufacture of a bag-on-container type assembly, may be non-sealable or resealable, preferably resealable. Where bag member14is resealable, bag member14may employ a resealable closure16at a desired location of bag member14, such as the top of bag member14as well as at one or more corners of bag member14as shown inFIG. 9.

A resealable closure such as a zipper may be located at, such as, any one or more of the left side or the right sides of container member12. The resealable closures may be positioned to enable bag member14to open to form a spout type orifice for dispensing product from container member12.

Bag member14may be secured to container member12by various methods such as heat sealing and adhesive bonding. Where bag member14is joined to a container member12formed from a box blank such as box blank52, lower edge portions40and42of bag member14may be sealed to strips32and34on container member12while container member12is in its box blank form such as in its flattened state as shown inFIG. 3.

Lower edges40and42of bag member14, as shown inFIG. 3, may be sealed to box blank52such as by heat sealing such as during manufacture of bag-on-container type assemblies. Thereafter, box blank may be expanded and bottom flaps26,28and30folded and secured together to yield container member12.

A portion or all of the interior surfaces of container member12employed in each of the bag-on-container and bag-in-container type assemblies, such as those portions that form strips32and34, may be coated with materials such as protectant materials, adhesive materials or combinations thereof. Protectant materials that may be employed include but are not limited to thermoplastics such as polyethylene or copolymers thereof. Advantageously, when the interior surfaces of container member12are coated with thermoplastics such as polyethylene, exposed surfaces of strips such as strips32and34that bear thermoplastic are available for bonding to bag member14.

A portion or the entire exterior of box blank52employed to form container member12may be coated with a protective material such as a thermoplastic such as polyethylene or copolymers thereof. The protective material may function to further protect the contents in container member12and may enable bag member14to be heat sealed to container member12.

When forming a bag-on-container type assembly, bag member14may be heat shrunk onto the exterior of container member12. In this aspect, bag member14may be formed from heat shrinkable materials such as polypropylene or copolymers thereof. The heat shrinkable material may be employed in combination with one or more adhesives on the heat shrinkable material as well as alternatively on the exterior of container member12as illustrated schematically inFIG. 7.

During manufacture of a bag-on-container type assembly, as illustrated schematically inFIG. 7, bag member14is placed over container member12and then bag member14and container member12are heated to cause bag member14to shrink onto the exterior of container member12.

Bag member14, where employed in manufacture of a bag-in-container type assembly, may be non-sealable or resealable, preferably resealable. Where bag member14is resealable, bag member14may employ a resealable closure16at a desired location of bag member14, such as at the top of bag member14as well as at one or more corners of bag member14as shown inFIG. 9.

Bag member14may be adhered to a portion of one or more interior surfaces of container member12, or to all of the interior surfaces of container member12, to produce a bag-in-container type container assembly100. The top of bag member14, when employed in bag-in-container assembly100, may extend above the top surface of container member12. The top of bag member14also may be flush with the top of container member12or may lie below the top of container member12. The bottom of bag member14, when employed in a bag-in-container type assembly100, may extend up to the bottom of container member12.

Various portions of container member12, when employed in a bag-in-container type assembly, may be opened to expose bag member14within container member12for removal of product from container member12. Container member12may be resealed over bag member14. Resealing of container member12may be achieved by adhesives such as low tack adhesives such as rubber type adhesives, organic copolymer adhesives, acrylic adhesives or mixtures thereof. These adhesives may be distributed on desired portions of container member12where resealing of those portions of container member12is desired.

Resealable closure16, where employed in a resealable bag member14for use in any of bag-on-container assemblies and bag-in-container assemblies, may be in a wide variety of forms such as zippers, magnetic media, adhesive tape, loop and hook fasteners such as Velcro or combinations thereof. Zippers for use with bag member14may be press to close type, slider type or combinations thereof depending on the type of container system and the product intended for storage in container member12employed in the container system. Press to close type zipper and slider type zipper closures are available from Zip-Pak Co. and from Pactiv Corp.

FIGS. 6 and 7schematically illustrate a process for producing a bag-on-container type assembly10that includes container member12in the form of a box and bag member14disposed on container12. During manufacture of a bag-on-container type assembly as illustrated inFIG. 6, rolls44and46of bag forming material are arranged to be used to form front wall36and rear wall38of bag member14on box blank52. Male and female components48and50of a closure member16such as a zipper are arranged on rolls44and46of bag forming materials. A box blank52with the upper ends folded to form strips32and34is positioned at the lower edge of rolls44and46of the bag forming materials.

After having positioned rolls44,46of bag forming materials and box blank52, opposed heat sealing dies54and56are employed to heat seal components48and50of closure member16to bag forming materials provided by rolls44and46. Heat sealing dies54,56enable heat sealing of bag forming materials provided by rolls44and46to any of adhesives, thermoplastic coatings or combinations thereof present on strips32and34of box blank52. Container member12may include a reinforcement member such as reinforcement80as shown inFIG. 10. In this aspect, container member12may be made with box blank52A as shown inFIG. 10A. Reinforcement member80may be present in box blank52at a desired location. Bag member14then may be secured to container member12to produce a bag-on-container type assembly. Where adhesive bonding is employed to adhere bag member14to container member12employed in each of the bag-on-container and bag-in-container type assemblies, the adhesive may be applied as an overall coating, or in a pattern where desired. Heat sealing of bag member14to container member12may be performed at about 200° F. to about 450° F., preferably about 250° F. to about 425° F., more preferably about 300° F. to about 400° F. Heat sealing may be performed for about 0.1 sec to about 2 sec, preferably about 0.3 sec to about 1 sec, more preferably about 0.5 sec to about 0.75 sec. Heat sealing may be performed in one step or a plurality of steps, preferably in one step. Heat sealing may be performed by generation of heat by well-known techniques such as conduction, induction, ultrasonic vibration and combinations thereof. Preferably, heat sealing is performed by conduction such as by use of heated rollers. Where heated rollers are employed, pressure applied during heat sealing may vary from about 5 PSI to about 1000 PSI, preferably about 50 PSI to about 700 PSI, more preferably about 150 PSI to about 500 PSI.

As shown inFIG. 7, cutting means such as laser, mechanical knives or combinations thereof, preferably mechanical knives such as knife blades58and60, may be used to sever the bag forming materials provided by rolls44and46to form bag member14. Thereafter, box blank52is expanded and filled with product62that may be fed through supply means such as hopper64.

During manufacture of a bag-in-container type container assembly, as shown schematically inFIG. 11, a bag member14is placed onto mandrel90. Bag member14preferably includes resealable closure16. Mandrel90is configured to be able to conform to the interior of container member12. Bag member14may, such as on lower edges40,42thereof, include an adhesive. Alternatively, as well as in addition to adhesive present on bag member14, the interior of container member12may be coated with a bondable material such as a thermoplastic, adhesive or combinations thereof.

In manufacture, pressure may be applied to container member12while mounted on the mandrel. The amount of pressure may vary depending on the material employed in container member12, as well as the temperature of the mandrel90over bag member14. The pressure and time of application is sufficient, however, to cause container member12to intimately conform to the shape of mandrel90and to bond bag member14to at least a portion of the interior surfaces of container member12. Typically, the temperature of mandrel90is about 200° F. to about 450° F., preferably about 250° F. to about 425° F., more preferably about 300° F. to about 400° F., the pressure is about 5 PSI to about 1000 PSI, preferably about 50 PSI to about 700 PSI, more preferably about 150 PSI to about 500 PSI and is applied for about 0.1 sec to about 2 sec, preferably about 0.3 sec to about 1 sec, more preferably about 0.5 sec to about 0.75 sec. Mandrel90may be heated or cooled, preferably heated. Mandrel90also may be employed independent of heating or cooling. Mandrel90may be expanded while heating to enable bonding of bag member14to at least a portion of the interior surfaces of container member12such as where interior surfaces of container member12are coated with a thermoplastic. Bag member14also may be bonded to interior surfaces of container member12by coating bag member14with an adhesive and placing container member12onto bag member14disposed on mandrel90.

Alternatively, a bag-in-container type assembly may be made by first securing bag member14that preferably include a closure means thereon, such as a zipper type closure, to the interior surface of a box blank and then applying glue to the side seams of the box blank to retain bag member14within container member12at a desired location within container member14. Opposing sides of the box blank then may be folded and secured to each other. Container member12optionally may be devoid of top flaps to enable bag member14to extend beyond container member12. In either embodiment where container member12includes top flaps or is devoid of top flaps, bag member14may folded back into container member12. Where container member12includes top flaps, those flaps may be closed to conceal bag member14within container member.

The bag-on-container type assemblies of the invention are able to achieve very high levels of protection against permeation of gases such as water vapor into product present in bag member14within container member12. To illustrate, a bag-on-container assembly was made by adhering a resealable bag member14to the exterior of a container member12where container member12is in the form of box that has a rectangular cross section and a heat-sealed hermetic bottom.

As an illustration of the protection provided against permeation of gases, a bag-on-container assembly is pressurized with one-PSI air pressure. Air flow is controlled by a precision regulator and an in-line flow meter for delivery to via a needle. An adhesive backed foam is used to minimize possible leakage around the needle. The bag on the bag-on-container assembly inflated under the supplied air pressure to register a one-PSI internal pressure. The flow meter, delineated in 0-30 liters/hour, fell to about zero, confirming that an airtight seal is achieved. This decrease in flow rate shows a level of protection not achievable by known packaging.