Food Science Packaging – Panagiotis Kinigakis, Christie Lynn Langer, Kraft Foods Global Brands LLC

Abstract for “Reclosable container arrangement.”

A bag-like, reclosable container made of semi-rigid, flexible plastic material that can be used to store pourable contents such as snacks, dry cereals, sugar, salt, cake mix, and other similar foodstuffs. The container has a corner dispensing spout that can be sealed with interengaging slide fastener elements.

Background for “Reclosable container arrangement.”

“1. “1.

“The invention is a bag-like reclosable container that is made of flexible material. It is designed to store pourable food products, such as dry cereals or semi-moist foods.

“Currently in packaging technology and in particular the facets thereof that concern themselves with dry cereals, among other foodstuffs in granular form it is the practice to use an inner bag. This inner bag is usually made of a water-impervious flexible plastic material or wax-coated material. It receives and stores the contents until it is time to disperse the dry cereal contents, or portions thereof, as the consumer desires. The inner bag is opened by the consumer along the heat seal. Flexible bags and containers of this type are not usually self-supporting so they are placed inside the outer container. The outer container is normally made of a rigid paperboard or similar laminated material and is rectangularly parallelipiped in shape internally to receive the inner bag. The outer container can be reclosed using overlapping flaps with interengageable tabs and slit fastener systems. This requires two containers to be produced and placed one inside the other. The inner bag is not resealable and can only be closed by folding over its previously opened upper edge. This container arrangement is not only expensive, but also requires the separate manufacturing of flexible plastic/waxed papers bags and rigid paperboard containers. It also makes it difficult to store the contents.

“More recently, to improve upon the above packaging technology and to eliminate the necessity of providing an outer rigid container (generally a rectangular paperboard container housing an inside flexible waxed or plastic bag storing dry pourable foodtuff contents), semi-rigid, self-supporting flexible containers have been created for dry foodstuffs such as dry cereals. This allows for a simpler, more cost-effective package construction. It also eliminates the need to use cardboard or paperboard containers that may attract rodents or insects and may be susceptible to damage from environmental conditions such as humidity and external moisture. Reclosable packaging, which uses cooperating closure elements such as male or female profile members to seal the bag or package, has been developed.

“2. “2.

“Gordon et al, U.S. Pat. No. No. 5,716,473 describes a semi-rigid cereal box made of paperboard with the interior surface coated with a thermoplastic layer and possibly covered with another moisture-imperious layer. The semi-rigid carton has a cross-section that is vertically essentially trapezoidal and has a broad self-supporting bottom. It also includes an upper edge with a sealable corner structure. This corner is used to form a pouring spoon for dispensing dry cereal contents. After the contents of the container have been distributed, it can be closed by pressing the spout sections together. The contact surfaces of adhesive will close the spout. This complex structure requires the use of an adhesive that often has the dry granular, or flaked contents of a container adhering to it during and after pouring. This will prevent the hermetically sealed reclosing and sealing of the container corner pouring structure. This can have an adverse effect on the seal’s integrity and prevents any remaining dry cereals or foodstuff from being stored in a state of freshness for a prolonged period.

“Warr, U.S. Pat. No. No. 5,611,626 describes a flexible plastic bag that can be used to store dry cometibles and other contents in sealed conditions. An upper corner of the rectangular bag is equipped with a tear line to allow for the tearing of a corner section to create a tapered or chamfered corner pouring spout. The adhesive strip on one side of the bag is to be removed from its place on the upper outer portion of the bag and placed adhesively over the pouring spat. This will seal in any remaining contents. This patent describes a complex structure in which the separate strip must manually be removed from the bag and placed on top of the corner of the bag that has the pouring spat to create a reclosable seal. The seal may lose its effectiveness if it is repeatedly removed from the bag and the pouring spout can be opened. This could adversely affect the quality and freshness of the bag’s contents over long-term storage.

“Rescloseable flexible plastic bags or containers have been created in packaging technology. These bags can be reclosed using the slide fasteners. In essence, these are interengageable male and female members or tongue & groove elements made of plastic material. These fasteners are attached to the bag’s open edges. Once the contents are separated, they can be resealed by simply reinforcing the male and female fastener members by applying pressure along their length.

There are many types of slide fasteners that are used in packaging. They can be integrally formed with the bag wall material or as strips which are sealed or fastened to the inner surfaces of the facing or opposing sides of bags or containers. The pressure can be applied along both the lengths of interengageable profiles male and female fastener members to create a general hermetic seal throughout the entire length of the container or bag.

“Thus, Branson, U.S. Pat. No. No. 4,787,755 describes a flexible bag-like container that includes cooperable fastener elements. This structure consists of male and female-shaped elements that are adapted to form a pouring spat. One embodiment has the fasteners attached to the outside of the container in an angle corner configuration to create a corner pouring spat. This can be closed by folding the container material over and joining the profiled fasteners together. This requires a complicated folding-over and fastener alignment procedure that cannot always be easily executed by a user.

Schmidt and U.S. Pat. No. 4,290,467; Van Erden, et al., U.S. Reissue Pat. No. Re 34,347; Bruno, U.S. Pat. No. 4,846,586; Johnson, U.S. Pat. No. No. No. No. 4,745,731, also describing apparatus and methods to produce packaging and container flexible structures using different types of interengagable male and female fastener arrangement.”

“Though the above patent publications generally provide for a sufficient resealing flexible plastic bags or containers to form essentially hermetically seal packaging structures protecting the contents, however, normally the reclosable seals extend along the entire length and edge of the rectangularly shaped plastic container. The bag openings created by the seperation of the male and female fastener elements can be excessively large, leading to rapid and often excessive bag contents dispensing, most commonly by young children. Children or other children may also be able to close the large bag openings created by the removal of bag fastener elements.

“Accordingly, to improve upon the existing bag closure arrangements for semirigid or flexible bags-like containers, which may also allow for the use of outer paperboard cartons and storage containers as commonly used in the packaging dry cereals, this invention is directed at the provision of a sealed rectangular, parallelipiped, or tubular, bag with at least one end corner being provided with a removable dispensing aperture facilitating the resealing. The novel resealable closure or opening is provided by a bag that has a chamfer-shaped corner opening. This allows for a much smaller corner pouring spout than the width.

“With regard to achieving the foregoing bag closing arrangement, the invention allows for the angled corner formation interengageable profiled fastener parts which are complementary male or female members. Such components may be integrally formed with bag material or heat sealed in strips to the interior facing surface of the bag walls. These fastener components can be easily disengaged by simply separating pulling or a “zipperlike” action to the bag so that it forms an open dispensing spout. After the bag has been filled with the required amount of contents, the interengageable male and female profile members can be pressed together to interengage. The pressure will then be maintained along its length to seal the bag.

“The corner section of the bag that is located to the outside of the interengageable profiled sliding fastener member might be given weakening lines. Laser scoring, or perforations that extend in parallel with the fastener member, allows for the tearing of the corner section of the bag. This also permits the production of pulling or separating the flange portions. It is possible to heat seal the bag outside of any perforation or weakening lines, e.g. Laser score is used to ensure that the interior bag is sealed before the slide fastener parts are separated.

“A further aspect of this invention is that the bottom or opposite end of the bag can be constructed with a wider configuration to form a bottom and flanges along opposite sides. This will allow the bag and its contents to be uprightly positioned, such as when it is stored on a shelf or placed on a display shelf. This will eliminate the need for rigid outer paperboard containers that take up space and are not suitable for dry cereal packaging. Instead, the inner bags can be stored in flexible outer containers.

“Accordingly, the object of the present invention is to provide a flexible, reclosable container for pourable contents. This container can include food products or the like. It is generally of a rectangular, parallelipiped or tubular sleevelike construction and includes a corner dispensing opening at the upper edge of at most one side wall.

“Another object is the invention to provide a reclosable container such as that described herein. The reclosable dispensing aperture comprises interengagable male and female members that form a slide fastener.

“Another object of the present invention” is to provide a semi-rigid container that can support pourable contents. In one corner, a pouring spout is located. Closing elements made up of interengagable male and female elements form an externally pressure-sealable fastener.

“A further object of this invention is the provision of a container according to the described herein. In order to allow the tearing off of a corner of the container, and thus forming flanges that can be used to pull apart the reclosable profiled fasteners elements for the dispensing opening, weakening lines or perforations in the container sidewalls are formed in parallel relationship outwardly from the reclosable slip fastener.

FIG. 1. A container containing generally semi-rigid flexible bags 10 is used for packaging dry pourable contents.

The bag 10 can be made from two sheets of plastic material or one tubular sheet depending on the method and apparatus used to make it. The bag’s material is basically a single or multiple layer of plastic, paper, or metallized material. It will preserve the freshness and integrity for long storage periods. If the container or bag 12 is provided with appropriate embossed or imprinted information, legends, or single- or multicolored information that is representative of the contents and the producer or manufacturer of the products, it may also be equipped with suitable single or multi-colored information.

“As shown in particular in FIGS. The bag 10 is in its essence rectangular when viewed from the side. However, the lower portion 14 of the bag sidewalls 16 can expand or be spread apart to form a wider bottom, or bag base 20, which will generally be ovoid, as shown in FIG. 5. The bag’s bottom 20 is ovoid and formed by the bag side wall material 16. The lower edges of these side walls, which have a convex curvilinear configuration relative to one another in horizontal transverse, form a bag bottom that is essentially skirt-like. This flat support structure allows the bag 10 to stand upright when placed on a horizontal surface such as a shelf, cupboard, or similar.

FIG. 7 of these drawings show that the corner dispensing or pouring spat 24 of the bag 10, which is located between the interengagable profiles fastener elements 36 and 38, is designed to be sealed.

The profiled slide fastener 34, which is shown in drawing, comprises a first, 40-inch-long plastic strip that runs along the dispensing orifice 24, and which, in transverse cross-section, forms the profiled male elements 38 and 36. Each strip is made from a separate 42-inch plastic 42 strip. One side may have a single flange 44 and the other a double-sided 46 flange. The interior facing surfaces 48 and 50 of the opposite sidewalls 16, which are made of a similar or slightly more rigid material to the bag 10, or container sidewalls 16, are heat welded or sealed with the 42, 42 strips. The profiled male and feminine elements 36, 38 that form the reclosable slide fastener system 34 can be integrated with the material of plastic bag sidewalls 16. This function is identical to the one described above. The profiled fastener elements described herein are male and female elements with a transverse cross-section that have a round male element designed to engage into a C shaped female element. However, other shapes can be used in the invention to create any type of tongue-and groove interengagable fastener structure.

“As shown in FIG. “As shown in FIG. It is possible to optionally form a frangible heat sealing 52 between the interior sidewalls 16 of the reclosable profiled slide fastener 34 to ensure that the contents of bag 10 are protected.

To open the pouring tap 24, a corner segment 60 is removed from the bag 10. This will produce a pair 62 of gripping flanges near the slide fastener 34. These flanges, when pulled apart, will allow the male and female profiles 36, 38 to separate.

After the bag contents have been distributed to the required quantity, such as dry cereal, it is necessary to press the pressure against the sidewalls 16 from the outside. This will help preserve the freshness and integrity, i.e. Their shelf-life and storage capacity over long periods of time.”

“The bag’s ovoid, self-supporting bottom structure, which is primarily an integral part of the container sidewall materials, requires that the lower ends of the sidewalls 16 extend outwardly. Then, they are tucked in toward the bottom to form the generally ovoid-shaped, curved bottom.

“Referring now, in particular, to the embodiments FIGS. 9 to 12 of the drawings show alternative container constructions. The container could be made of either a flexible material or semi-rigid materials, as shown in the various figures. Elements that are identical or similar in nature to the elements shown in the previous embodiments are identified with the same reference number, FIGS. The drawings 9 and 10 show, respectively, pillows-shaped containers or containers with a knife edge bottom.

Referring to FIG. 9 may contain upper and lower seals 72 and 74 as well as a center fin or lap sealing 76, as shown in FIG. FIG. FIG. 9 is an example of a traditional pillow-type packaging, and can be used for the packaging ready-to-eat cereals. This type of pillow bag is generally made from a vertical form and filler and has a center or offcenter fin seal. FIG. 8 shows an alternative pillow bag 80. In this particular embodiment, the pillow bags are provided with a top seal, bottom seal, and side seals 82. These bags can be made horizontally using fill equipment that employs a variety sealing patterns. FIGS. 7 and 8 show the pillow bags 70 and 80. 9, 10, and 9 are respectively designed to be placed in an outer container. This container is usually rectangular in parallelipiped configuration and may be made of paper board.

“Furthermore, FIGS. FIGS. 11 and 12 show, respectively, standup bags 100 and 90, where the 90-liter standup bag is shown in FIG. 11, includes a top seal of 92 and side seals of 94, 96. These seals may be heat seals, or the like. The bag’s bottom is expanded in the same way as shown in FIG. 1. of the drawings to create a self-supporting, upstanding bag construction. Preferably, it is made of semi-rigid materials as described hereinabove.

“In regard to the 100-liter standup bag shown in FIG. 12 This includes the peripheral seal structures 102-104, 106, 108 and 108. The bottom of the bag could be an expanded self-supporting structure, known as a ‘DOY-PACK \”.”

“The standup bags in FIGS. 11, 12 and 11 can generally be used without the need to use external carton containers structures.”

“Moreover, even though the containers or bags described above are for dry foods products such as cereals, depending on the material used, these structures can be used to store semi-moist products such as coconuts, cheeses, and other frozen food products.

“The advantages of the invention are clearly illustrated by the above structures. The shorter zipper length or slide fasteners that are less than half the width of the container/bag reduces the cost of providing the slide fasteners due to the reduction in material.

The reclosable slide fasteners in the corner of the bag allow for an easy opening. You can either cut the outer corner with a suitable scissors or tear off along weakening lines. These zipper-like slides fasteners provide a seal structure that, preferably, can be a hermetic seal and are easy to align for the reclosure or container.

“The corner spout can be shaped or directed to allow for easy dispensing of product. The novel bag construction can be used for pillow bags as well as stand-up packages.

“From the above, it is clear that the present invention relates to a novel bag arrangement with a unique slide fastener, forming a reclosable corners spout used for the dispensing and sealing of the contents.”

“While the preferred embodiments have been described, it is understood that modifications or changes could be made to the form or details without departing from its spirit. The invention is not to be limited to the form and details herein described nor to any part of the invention as claimed herein.

Summary for “Reclosable container arrangement.”

“1. “1.

“The invention is a bag-like reclosable container that is made of flexible material. It is designed to store pourable food products, such as dry cereals or semi-moist foods.

“Currently in packaging technology and in particular the facets thereof that concern themselves with dry cereals, among other foodstuffs in granular form it is the practice to use an inner bag. This inner bag is usually made of a water-impervious flexible plastic material or wax-coated material. It receives and stores the contents until it is time to disperse the dry cereal contents, or portions thereof, as the consumer desires. The inner bag is opened by the consumer along the heat seal. Flexible bags and containers of this type are not usually self-supporting so they are placed inside the outer container. The outer container is normally made of a rigid paperboard or similar laminated material and is rectangularly parallelipiped in shape internally to receive the inner bag. The outer container can be reclosed using overlapping flaps with interengageable tabs and slit fastener systems. This requires two containers to be produced and placed one inside the other. The inner bag is not resealable and can only be closed by folding over its previously opened upper edge. This container arrangement is not only expensive, but also requires the separate manufacturing of flexible plastic/waxed papers bags and rigid paperboard containers. It also makes it difficult to store the contents.

“More recently, to improve upon the above packaging technology and to eliminate the necessity of providing an outer rigid container (generally a rectangular paperboard container housing an inside flexible waxed or plastic bag storing dry pourable foodtuff contents), semi-rigid, self-supporting flexible containers have been created for dry foodstuffs such as dry cereals. This allows for a simpler, more cost-effective package construction. It also eliminates the need to use cardboard or paperboard containers that may attract rodents or insects and may be susceptible to damage from environmental conditions such as humidity and external moisture. Reclosable packaging, which uses cooperating closure elements such as male or female profile members to seal the bag or package, has been developed.

“2. “2.

“Gordon et al, U.S. Pat. No. No. 5,716,473 describes a semi-rigid cereal box made of paperboard with the interior surface coated with a thermoplastic layer and possibly covered with another moisture-imperious layer. The semi-rigid carton has a cross-section that is vertically essentially trapezoidal and has a broad self-supporting bottom. It also includes an upper edge with a sealable corner structure. This corner is used to form a pouring spoon for dispensing dry cereal contents. After the contents of the container have been distributed, it can be closed by pressing the spout sections together. The contact surfaces of adhesive will close the spout. This complex structure requires the use of an adhesive that often has the dry granular, or flaked contents of a container adhering to it during and after pouring. This will prevent the hermetically sealed reclosing and sealing of the container corner pouring structure. This can have an adverse effect on the seal’s integrity and prevents any remaining dry cereals or foodstuff from being stored in a state of freshness for a prolonged period.

“Warr, U.S. Pat. No. No. 5,611,626 describes a flexible plastic bag that can be used to store dry cometibles and other contents in sealed conditions. An upper corner of the rectangular bag is equipped with a tear line to allow for the tearing of a corner section to create a tapered or chamfered corner pouring spout. The adhesive strip on one side of the bag is to be removed from its place on the upper outer portion of the bag and placed adhesively over the pouring spat. This will seal in any remaining contents. This patent describes a complex structure in which the separate strip must manually be removed from the bag and placed on top of the corner of the bag that has the pouring spat to create a reclosable seal. The seal may lose its effectiveness if it is repeatedly removed from the bag and the pouring spout can be opened. This could adversely affect the quality and freshness of the bag’s contents over long-term storage.

“Rescloseable flexible plastic bags or containers have been created in packaging technology. These bags can be reclosed using the slide fasteners. In essence, these are interengageable male and female members or tongue & groove elements made of plastic material. These fasteners are attached to the bag’s open edges. Once the contents are separated, they can be resealed by simply reinforcing the male and female fastener members by applying pressure along their length.

There are many types of slide fasteners that are used in packaging. They can be integrally formed with the bag wall material or as strips which are sealed or fastened to the inner surfaces of the facing or opposing sides of bags or containers. The pressure can be applied along both the lengths of interengageable profiles male and female fastener members to create a general hermetic seal throughout the entire length of the container or bag.

“Thus, Branson, U.S. Pat. No. No. 4,787,755 describes a flexible bag-like container that includes cooperable fastener elements. This structure consists of male and female-shaped elements that are adapted to form a pouring spat. One embodiment has the fasteners attached to the outside of the container in an angle corner configuration to create a corner pouring spat. This can be closed by folding the container material over and joining the profiled fasteners together. This requires a complicated folding-over and fastener alignment procedure that cannot always be easily executed by a user.

Schmidt and U.S. Pat. No. 4,290,467; Van Erden, et al., U.S. Reissue Pat. No. Re 34,347; Bruno, U.S. Pat. No. 4,846,586; Johnson, U.S. Pat. No. No. No. No. 4,745,731, also describing apparatus and methods to produce packaging and container flexible structures using different types of interengagable male and female fastener arrangement.”

“Though the above patent publications generally provide for a sufficient resealing flexible plastic bags or containers to form essentially hermetically seal packaging structures protecting the contents, however, normally the reclosable seals extend along the entire length and edge of the rectangularly shaped plastic container. The bag openings created by the seperation of the male and female fastener elements can be excessively large, leading to rapid and often excessive bag contents dispensing, most commonly by young children. Children or other children may also be able to close the large bag openings created by the removal of bag fastener elements.

“Accordingly, to improve upon the existing bag closure arrangements for semirigid or flexible bags-like containers, which may also allow for the use of outer paperboard cartons and storage containers as commonly used in the packaging dry cereals, this invention is directed at the provision of a sealed rectangular, parallelipiped, or tubular, bag with at least one end corner being provided with a removable dispensing aperture facilitating the resealing. The novel resealable closure or opening is provided by a bag that has a chamfer-shaped corner opening. This allows for a much smaller corner pouring spout than the width.

“With regard to achieving the foregoing bag closing arrangement, the invention allows for the angled corner formation interengageable profiled fastener parts which are complementary male or female members. Such components may be integrally formed with bag material or heat sealed in strips to the interior facing surface of the bag walls. These fastener components can be easily disengaged by simply separating pulling or a “zipperlike” action to the bag so that it forms an open dispensing spout. After the bag has been filled with the required amount of contents, the interengageable male and female profile members can be pressed together to interengage. The pressure will then be maintained along its length to seal the bag.

“The corner section of the bag that is located to the outside of the interengageable profiled sliding fastener member might be given weakening lines. Laser scoring, or perforations that extend in parallel with the fastener member, allows for the tearing of the corner section of the bag. This also permits the production of pulling or separating the flange portions. It is possible to heat seal the bag outside of any perforation or weakening lines, e.g. Laser score is used to ensure that the interior bag is sealed before the slide fastener parts are separated.

“A further aspect of this invention is that the bottom or opposite end of the bag can be constructed with a wider configuration to form a bottom and flanges along opposite sides. This will allow the bag and its contents to be uprightly positioned, such as when it is stored on a shelf or placed on a display shelf. This will eliminate the need for rigid outer paperboard containers that take up space and are not suitable for dry cereal packaging. Instead, the inner bags can be stored in flexible outer containers.

“Accordingly, the object of the present invention is to provide a flexible, reclosable container for pourable contents. This container can include food products or the like. It is generally of a rectangular, parallelipiped or tubular sleevelike construction and includes a corner dispensing opening at the upper edge of at most one side wall.

“Another object is the invention to provide a reclosable container such as that described herein. The reclosable dispensing aperture comprises interengagable male and female members that form a slide fastener.

“Another object of the present invention” is to provide a semi-rigid container that can support pourable contents. In one corner, a pouring spout is located. Closing elements made up of interengagable male and female elements form an externally pressure-sealable fastener.

“A further object of this invention is the provision of a container according to the described herein. In order to allow the tearing off of a corner of the container, and thus forming flanges that can be used to pull apart the reclosable profiled fasteners elements for the dispensing opening, weakening lines or perforations in the container sidewalls are formed in parallel relationship outwardly from the reclosable slip fastener.

FIG. 1. A container containing generally semi-rigid flexible bags 10 is used for packaging dry pourable contents.

The bag 10 can be made from two sheets of plastic material or one tubular sheet depending on the method and apparatus used to make it. The bag’s material is basically a single or multiple layer of plastic, paper, or metallized material. It will preserve the freshness and integrity for long storage periods. If the container or bag 12 is provided with appropriate embossed or imprinted information, legends, or single- or multicolored information that is representative of the contents and the producer or manufacturer of the products, it may also be equipped with suitable single or multi-colored information.

“As shown in particular in FIGS. The bag 10 is in its essence rectangular when viewed from the side. However, the lower portion 14 of the bag sidewalls 16 can expand or be spread apart to form a wider bottom, or bag base 20, which will generally be ovoid, as shown in FIG. 5. The bag’s bottom 20 is ovoid and formed by the bag side wall material 16. The lower edges of these side walls, which have a convex curvilinear configuration relative to one another in horizontal transverse, form a bag bottom that is essentially skirt-like. This flat support structure allows the bag 10 to stand upright when placed on a horizontal surface such as a shelf, cupboard, or similar.

FIG. 7 of these drawings show that the corner dispensing or pouring spat 24 of the bag 10, which is located between the interengagable profiles fastener elements 36 and 38, is designed to be sealed.

The profiled slide fastener 34, which is shown in drawing, comprises a first, 40-inch-long plastic strip that runs along the dispensing orifice 24, and which, in transverse cross-section, forms the profiled male elements 38 and 36. Each strip is made from a separate 42-inch plastic 42 strip. One side may have a single flange 44 and the other a double-sided 46 flange. The interior facing surfaces 48 and 50 of the opposite sidewalls 16, which are made of a similar or slightly more rigid material to the bag 10, or container sidewalls 16, are heat welded or sealed with the 42, 42 strips. The profiled male and feminine elements 36, 38 that form the reclosable slide fastener system 34 can be integrated with the material of plastic bag sidewalls 16. This function is identical to the one described above. The profiled fastener elements described herein are male and female elements with a transverse cross-section that have a round male element designed to engage into a C shaped female element. However, other shapes can be used in the invention to create any type of tongue-and groove interengagable fastener structure.

“As shown in FIG. “As shown in FIG. It is possible to optionally form a frangible heat sealing 52 between the interior sidewalls 16 of the reclosable profiled slide fastener 34 to ensure that the contents of bag 10 are protected.

To open the pouring tap 24, a corner segment 60 is removed from the bag 10. This will produce a pair 62 of gripping flanges near the slide fastener 34. These flanges, when pulled apart, will allow the male and female profiles 36, 38 to separate.

After the bag contents have been distributed to the required quantity, such as dry cereal, it is necessary to press the pressure against the sidewalls 16 from the outside. This will help preserve the freshness and integrity, i.e. Their shelf-life and storage capacity over long periods of time.”

“The bag’s ovoid, self-supporting bottom structure, which is primarily an integral part of the container sidewall materials, requires that the lower ends of the sidewalls 16 extend outwardly. Then, they are tucked in toward the bottom to form the generally ovoid-shaped, curved bottom.

“Referring now, in particular, to the embodiments FIGS. 9 to 12 of the drawings show alternative container constructions. The container could be made of either a flexible material or semi-rigid materials, as shown in the various figures. Elements that are identical or similar in nature to the elements shown in the previous embodiments are identified with the same reference number, FIGS. The drawings 9 and 10 show, respectively, pillows-shaped containers or containers with a knife edge bottom.

Referring to FIG. 9 may contain upper and lower seals 72 and 74 as well as a center fin or lap sealing 76, as shown in FIG. FIG. FIG. 9 is an example of a traditional pillow-type packaging, and can be used for the packaging ready-to-eat cereals. This type of pillow bag is generally made from a vertical form and filler and has a center or offcenter fin seal. FIG. 8 shows an alternative pillow bag 80. In this particular embodiment, the pillow bags are provided with a top seal, bottom seal, and side seals 82. These bags can be made horizontally using fill equipment that employs a variety sealing patterns. FIGS. 7 and 8 show the pillow bags 70 and 80. 9, 10, and 9 are respectively designed to be placed in an outer container. This container is usually rectangular in parallelipiped configuration and may be made of paper board.

“Furthermore, FIGS. FIGS. 11 and 12 show, respectively, standup bags 100 and 90, where the 90-liter standup bag is shown in FIG. 11, includes a top seal of 92 and side seals of 94, 96. These seals may be heat seals, or the like. The bag’s bottom is expanded in the same way as shown in FIG. 1. of the drawings to create a self-supporting, upstanding bag construction. Preferably, it is made of semi-rigid materials as described hereinabove.

“In regard to the 100-liter standup bag shown in FIG. 12 This includes the peripheral seal structures 102-104, 106, 108 and 108. The bottom of the bag could be an expanded self-supporting structure, known as a ‘DOY-PACK \”.”

“The standup bags in FIGS. 11, 12 and 11 can generally be used without the need to use external carton containers structures.”

“Moreover, even though the containers or bags described above are for dry foods products such as cereals, depending on the material used, these structures can be used to store semi-moist products such as coconuts, cheeses, and other frozen food products.

“The advantages of the invention are clearly illustrated by the above structures. The shorter zipper length or slide fasteners that are less than half the width of the container/bag reduces the cost of providing the slide fasteners due to the reduction in material.

The reclosable slide fasteners in the corner of the bag allow for an easy opening. You can either cut the outer corner with a suitable scissors or tear off along weakening lines. These zipper-like slides fasteners provide a seal structure that, preferably, can be a hermetic seal and are easy to align for the reclosure or container.

“The corner spout can be shaped or directed to allow for easy dispensing of product. The novel bag construction can be used for pillow bags as well as stand-up packages.

“From the above, it is clear that the present invention relates to a novel bag arrangement with a unique slide fastener, forming a reclosable corners spout used for the dispensing and sealing of the contents.”

“While the preferred embodiments have been described, it is understood that modifications or changes could be made to the form or details without departing from its spirit. The invention is not to be limited to the form and details herein described nor to any part of the invention as claimed herein.

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