EP2132108A1 - Easy-opening flexible container - Google Patents

Easy-opening flexible container

Info

Publication number
EP2132108A1
EP2132108A1 EP08737775A EP08737775A EP2132108A1 EP 2132108 A1 EP2132108 A1 EP 2132108A1 EP 08737775 A EP08737775 A EP 08737775A EP 08737775 A EP08737775 A EP 08737775A EP 2132108 A1 EP2132108 A1 EP 2132108A1
Authority
EP
European Patent Office
Prior art keywords
flexible
sealing member
dispensing aperture
pouch
flexible sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08737775A
Other languages
German (de)
French (fr)
Other versions
EP2132108B1 (en
Inventor
Kilian John O'neill
Mark Francis Olivier
Philip Andrew Sawin
Michael Patrick Hayden
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Procter and Gamble Co
Original Assignee
Procter and Gamble Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39689166&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2132108(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Procter and Gamble Co filed Critical Procter and Gamble Co
Priority to PL08737775T priority Critical patent/PL2132108T3/en
Publication of EP2132108A1 publication Critical patent/EP2132108A1/en
Application granted granted Critical
Publication of EP2132108B1 publication Critical patent/EP2132108B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/08—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession
    • B65D83/0805—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession through an aperture in a wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5827—Tear-lines provided in a wall portion
    • B65D75/5833—Tear-lines provided in a wall portion for tearing out a portion of the wall
    • B65D75/5838—Tear-lines provided in a wall portion for tearing out a portion of the wall combined with separate fixed tearing means, e.g. tabs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861—Spouts
    • B65D75/5872—Non-integral spouts
    • B65D75/5877—Non-integral spouts connected to a planar surface of the package wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5894—Preformed openings provided in a wall portion and covered by a separate removable flexible element
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/24—Towel dispensers; Toilet paper dispensers
    • A47K10/32—Dispensers for paper towels or toilet paper
    • A47K2010/3266—Wet wipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2575/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D2575/52—Details
    • B65D2575/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D2575/586—Opening or contents-removing devices added or incorporated during package manufacture with means for reclosing

Definitions

  • This invention relates to a flexible container enclosing articles to be dispensed through an aperture.
  • a flexible pouch is formed of a flexible sheet material. Access into the interior of the pouch is typically provided by way of a dispensing aperture in the sheet material.
  • the dispensing aperture is typically closed by a flexible sealing member to prevent contamination and/or drying of the article(s) contained inside the pouch prior to use.
  • the flexible sealing member is typically adhered to the pouch by means of an adhesive.
  • a lifting tab is typically provided for use in lifting the flexible sealing member in order to expose the dispensing aperture and thereby gain access to the interior of the pouch.
  • a typical rigid closure element includes two elements that interlock, such as a base that is adhered to the pouch and a hinged lid.
  • a rigid closure element may fail to seal tightly and thereby fail to prevent contamination of the article(s) and/or moisture loss from article(s) such as wet wipes.
  • One solution has been to provide both a flexible sealing member to close the dispensing aperture and a rigid closure element to cover both the flexible sealing member and the dispensing aperture.
  • the requirement for its placement during manufacture is simply that the flexible sealing member or the rigid closure element must close the dispensing aperture, thereby preventing exposure of the enclosed article(s).
  • the flexible sealing member or the rigid closure element may be made substantially larger than the dispensing aperture, such that minor misplacement does not result in a failure to close the dispensing aperture.
  • both a flexible sealing member and a rigid closure element are present, their placements are interrelated. For example, relative misplacement of the rigid closure element may obstruct the lifting tab on the flexible sealing member and thereby prevent the user from lifting the flexible sealing member for access to the enclosed article(s).
  • the rigid closure element is typically strongly secured to the flexible pouch, the user is then forced to open the flexible container in some other way, such as cutting or tearing the flexible pouch.
  • a flexible pouch that has been cut or torn open typically cannot be resealed, and the original purpose of enclosing the article(s) inside the flexible container is thus defeated.
  • the relative misplacement of either the flexible sealing member or the rigid closure element may also result in higher manufacturing cost due to the scrapping of defective product and/or the necessity to spend more on equipment, training, and inspection in order to minimize the number of defective products reaching the users. In addition, users who encounter defective products may lose faith in the product.
  • a flexible container includes a flexible pouch having a dispensing aperture through which an interior space is accessible from outside the flexible pouch, a flexible sealing member releasably attached to the flexible pouch and covering the dispensing aperture, and a rigid closure element surrounding the dispensing aperture.
  • the flexible sealing member has at least two lifting tabs for lifting the flexible sealing member and thereby exposing the dispensing aperture.
  • the rigid closure element has a base attached to the flexible pouch and lid connected to the base by a hinge. At least one of the lifting tabs is likely to not be obstructed by the rigid closure element when the lid is in an open condition, thereby remaining usable for lifting the flexible sealing member to expose the dispensing aperture, even if another lifting tab is obstructed by the rigid closure element.
  • Figure 1 shows a perspective view of an exemplary flexible container.
  • Figure 2 shows a perspective view of another exemplary flexible container.
  • disposed refers to an element being attached and positioned in a particular place or position in a unitary structure with other elements.
  • attach refers to elements being connected or united by fastening, adhering, bonding, etc. by any method suitable for the elements being attached together and their constituent materials. Many suitable methods for attaching elements together are well-known, including adhesive bonding, pressure bonding, thermal bonding, etc. Such attachment methods may be used to attach elements together over a particular area either continuously or intermittently. Unless indicated otherwise, elements that are described as being attached to each other are attached directly together, with either nothing or only bonding material, e.g., an adhesive, between them. Elements may be attached "permanently", i.e., attached in such a way that one or both of the elements and/or any bonding material that is present must be damaged in order to separate them.
  • This permanent attachment excludes temporary attachment, such as fastening elements together by means of fasteners that may be unfastened.
  • elements may be attached "releasably", i.e., attached in such a way that neither of the elements needs to be damaged in order to separate them.
  • laminate refers to elements being attached together in a layered arrangement.
  • cohesive refers to the property of a material that, once set, sticks to itself but does not to any significant degree stick to other materials.
  • water-permeable and water-impermeable refer to the penetrability of materials in the context of the intended usage of disposable absorbent articles. Specifically, the term “water-permeable” refers to a layer or a layered structure having pores, openings, and/or interconnected void spaces that permit liquid water to pass through its thickness in the absence of a forcing pressure. Conversely, the term “water-impermeable” refers to a layer or a layered structure through the thickness of which liquid water cannot pass in the absence of a forcing pressure. As is well known in the art, a common method for measuring the permeability to water of the materials is a hydrostatic pressure test, also called a hydrostatic head test or simply a "hydrohead” test.
  • nonwoven refers to a sheet, web, or batt of directionally or randomly oriented fibers, made by bonding or entangling the fibers through mechanical, thermal, or chemical means.
  • Nonwoven materials exclude paper and products which are woven, knitted, tufted, or felted by wet milling.
  • the fibers are preferably but not necessarily man-made synthetics.
  • a flexible container may have any shape suitable for enclosing its contents, such as a stack or a roll of substrate sheets, such as wipes.
  • the flexible container may be cylindrical, polygonal, or parallelepipedal in shape.
  • FIG. 1 and Figure 2 illustrates an exemplary embodiment of a flexible container 1 in which a flexible pouch 2 is formed of a flexible polymeric sheet material 3, which may be water-impermeable if the need to contain moisture or the need to exclude moisture exists, or may be water-permeable if neither of these needs exists.
  • the flexible pouch 2 has a top wall 4, an opposing bottom wall (not shown in the figures for clarity), opposing end walls 6 and 7, a front side wall 8, and an opposing rear side wall (not shown in the figures for clarity), arranged in a generally parallelepipedal configuration.
  • the opposing end walls 6 and 7 are closed by end seals 9 and 10.
  • the walls define and enclose the interior space 11 of the flexible pouch 2.
  • the flexible pouch 2 has a dispensing aperture 12 in its top wall 4. Such a dispensing aperture may be made in another of the walls, instead of or in addition to the top wall.
  • the dispensing aperture 12 may be fully formed in the manufacturing process or may be defined, but not cut out, by perforation of the sheet material 3.
  • the exemplary dispensing aperture 12 shown in the figures has a relatively simple oval shape.
  • the dispensing aperture 12 may have a different relatively simple shape, such as a rectangular shape, or may have a relatively complex shape, such as a generally rectangular shape with rounded corners, or a shape with multiple protrusions. In general, the dispensing aperture 12 may have any shape suitable for access into the interior space 11 of the flexible pouch 2.
  • a flexible sealing member 13 overlies the dispensing aperture 12 and extends beyond the dispensing aperture in all directions so as to also overlie the immediately surrounding area and thereby cover the entirety of the dispensing aperture 12.
  • the flexible sealing member 13 is formed of a flexible material, which may be identical to the sheet material 3 of which the flexible pouch 2 is formed.
  • the flexible sealing member 13 is releasably attached to the flexible pouch 2 by any method suitable for the materials involved, including, for example, adhesive attachment, cohesive attachment, or a combination of suitable methods.
  • the formation of the dispensing aperture 12 may be completed by the user when lifting the flexible sealing member 13, at which time the attachment of the flexible sealing member 13 to the sheet material 3 may cause the weakened sheet material 3 to tear where it was perforated.
  • the flexible sealing member 13 has lifting tabs 14 and 15 located along the periphery of the flexible sealing member 13. These lifting tabs 14 and 15 adapted to be grasped by a user and used to lift the flexible sealing member 13 away from the surface of the flexible pouch 2 to thereby expose the dispensing aperture 12.
  • opposing lifting tabs 14 and 15 are located along the periphery of the flexible sealing member 13 near the opposing end walls 6 and 7 of the flexible pouch 2.
  • Such lifting tabs may be provided along the periphery of the flexible sealing member 13 near the side walls of the flexible pouch 2, instead of or in addition to the locations shown in Figure 1.
  • such lifting tabs may be provided anywhere along the periphery of the flexible sealing member 13, instead of or in addition to the locations shown in Figure 1 or previously described.
  • the lifting tabs 14 and 15 are located along the periphery of the flexible sealing member 13 in adjacent quadrants of the flexible sealing member 13, i.e., one lifting tab 14 is located relatively nearer the end wall 6 of the flexible pouch 2 and the other lifting tab 15 is located relatively nearer the front side wall 8 of the flexible pouch 2.
  • the exemplary flexible sealing member 13 shown in the figures has a relatively simple oval shape and each of the lifting tabs 14 and 15 is shown in the figures as having the relatively simple shape of a segment of the oval.
  • the flexible sealing member 13 may have a different relatively simple shape, such as a rectangular shape, or may have a relatively complex shape, such as a generally rectangular shape with rounded corners, or a shape with multiple protrusions.
  • the flexible sealing member 13 may have any shape suitable for covering the aperture 12.
  • each of the lifting tabs 14 and 15 may have a different relatively simple shape, such as a rounded shape or a rectangular shape, or may have a relatively complex shape, such as a shape with multiple protrusions.
  • each of the lifting tabs 14 and 15 may have any shape suitable for being grasped by the user.
  • the exemplary lifting tabs 14 and 15 shown in the figures generally conform to the general contour of the flexible sealing member 13.
  • the lifting tabs 14 and 15 may have the forms of distinct protuberances projecting outward from the general contour of the flexible sealing member 13. The provision of multiple lifting tabs reduces the likelihood that the user will not be able to lift the flexible sealing member to gain access to the article(s) enclosed inside the interior space of the flexible pouch. In particular, if relative misplacement of the flexible sealing member and the rigid closure element results in the obstruction of one of the lifting tabs, another lifting tab will likely remain usable.
  • lifting tab is defective in some way, such as by being adhered securely to the flexible pouch, it is likely that another lifting tab will remain usable.
  • the provision of multiple lifting tabs makes it possible to open the dispensing aperture with either hand, thus facilitating access to the enclosed article(s) by both left-handed and right-handed users, as well as by a user whose one hand is occupied in a task, such as holding a child, and who therefore must use his or her free hand, which may be left or right, to reach for the enclosed article(s).
  • the lifting tabs may be free of attachment to the flexible pouch or may be attached relatively weakly in comparison to the remainder of the flexible sealing member, such as by an adhesive having a low peel force or simply by a lighter coverage of adhesive than is used to attach the remainder of the flexible sealing member to the flexible pouch.
  • Another way of attaching the lifting tabs relatively weakly to the flexible pouch is to provide an adhesive on one surface and a silicone coating on the mating surface. Relatively weakly attached lifting tabs may be desirable because they may remain adhered to the flexible pouch wall during its manufacturing process and thereby decrease the possibility of entanglement in the manufacturing equipment.
  • a rigid closure element 16 is attached onto the top wall 4 of the flexible pouch 2.
  • This rigid closure element 16 has a base 17 and a lid 18.
  • a base and a lid may be connected by a relatively flexible flap forming a hinge 19 as shown in the figures, or may be connected by a multi-piece hinge mechanism.
  • the lid 18 is shown in an "open” condition in which the flexible sealing member 13 and the dispensing aperture 12 are accessible.
  • the base 17 and the lid 18 may engage in any suitable manner such that the lid will remain in a "closed” configuration once engaged with the base 17.
  • the base 17 and the lid 18 must be disengaged such that the lid 18 can be swung on the hinge 19 to the "open" condition shown in the figures.
  • the exemplary rigid closure element 16 shown in the figures has a relatively simple rectangular shape.
  • the rigid closure element 16 may have a different relatively simple shape, such as a round shape or an oval shape, or may have a relatively complex shape, such as a generally rectangular shape with rounded corners, or a shape with multiple protrusions.
  • the rigid closure element 16 may have any shape suitable for covering the aperture 12.
  • the base 17 is attached to the sheet material 3 of the flexible sealing member 13 by any method suitable for the materials involved. This attachment may be permanent or releasable. As shown in Figure 1, the base 17 is disposed so as to surround the dispensing aperture 12 at a distance from it.
  • the rigid closure element 16 is preferably placed so as to likewise surround the flexible sealing member 13 at a distance from it, thereby leaving both of the lifting tabs 14 and 15 accessible and usable.
  • some degree of relative misplacement of the rigid closure element 16 and the flexible sealing member 13 may be acceptable because of the provision of the multiple lifting tabs 14 and 15, which increases the likelihood that at least one of the lifting tabs will remain usable, even if the relative misplacement is so great that another lifting tab is obstructed.
  • Each of the flexible pouch, the flexible sealing member, and the rigid closure element may be formed partially or wholly of a polymeric material, as is typical in the art.
  • the polymeric material(s) utilized in the flexible pouch and/or the flexible sealing member may have the form of a film and may include only a single layer or multiple layers in a laminate structure.
  • Such a laminate structure may include more than one film and/or may include a layer or layers in other forms, such as a fibrous sheet or a foil.
  • the rigid closure element may be formed partially or wholly of a moldable thermoplastic material, such as polypropylene, polyethylene, polystyrene, acrylonitryl butadiene styrene (ABS), polyester, polyvinyl chloride, polycarbonate or elastomer, or a blend of these materials.
  • a moldable thermoplastic material such as polypropylene, polyethylene, polystyrene, acrylonitryl butadiene styrene (ABS), polyester, polyvinyl chloride, polycarbonate or elastomer, or a blend of these materials.
  • the rigid closure element may also, or alternatively, be formed partially or wholly of other materials, such as cardboard, corrugated paper, wood, cardstock, paper, ceramic, and combinations thereof.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

A flexible container (1) including a flexible pouch (2) having a dispensing aperture (12) through which an interior space (11) is accessible from outside the flexible pouch (2), a flexible sealing member (13) releasably attached to the flexible pouch (2) and covering the dispensing aperture (12), and a rigid closure element (16) surrounding the dispensing aperture (12). The flexible sealing member (13) has at least two lifting tabs (14, 15) for lifting the flexible sealing member (13) and thereby exposing the dispensing aperture (12). The rigid closure element (16) has a base (17) permanently attached to the flexible pouch (2) and lid (18) connected to the base (17) by a hinge (19). At least one of the lifting tabs (14, 15) is likely to not be obstructed by the rigid closure element (16) when the lid (18) is in an open condition, thereby remaining usable for lifting the flexible sealing member (13) to expose the dispensing aperture (12), even if another lifting tab (14, 15) is obstructed by the rigid closure element (16).

Description

EASY-OPENING FLEXIBLE CONTAINER
FIELD OF THE INVENTION
This invention relates to a flexible container enclosing articles to be dispensed through an aperture.
BACKGROUND OF THE INVENTION
Many types of household and personal care articles, such as dust cloths, wipes, wet wipes, facial cloths, and baby cloths may be packaged inside flexible containers. In a typical flexible container for packaging such goods, a flexible pouch is formed of a flexible sheet material. Access into the interior of the pouch is typically provided by way of a dispensing aperture in the sheet material.
The dispensing aperture is typically closed by a flexible sealing member to prevent contamination and/or drying of the article(s) contained inside the pouch prior to use. The flexible sealing member is typically adhered to the pouch by means of an adhesive. At one end of the flexible sealing member, a lifting tab is typically provided for use in lifting the flexible sealing member in order to expose the dispensing aperture and thereby gain access to the interior of the pouch.
Some flexible containers are outfitted with rigid closure elements. A typical rigid closure element includes two elements that interlock, such as a base that is adhered to the pouch and a hinged lid. However, such a rigid closure element may fail to seal tightly and thereby fail to prevent contamination of the article(s) and/or moisture loss from article(s) such as wet wipes. One solution has been to provide both a flexible sealing member to close the dispensing aperture and a rigid closure element to cover both the flexible sealing member and the dispensing aperture.
When only a flexible sealing member or only a rigid closure element is present, the requirement for its placement during manufacture is simply that the flexible sealing member or the rigid closure element must close the dispensing aperture, thereby preventing exposure of the enclosed article(s). In order to facilitate meeting this requirement, the flexible sealing member or the rigid closure element may be made substantially larger than the dispensing aperture, such that minor misplacement does not result in a failure to close the dispensing aperture. However, when both a flexible sealing member and a rigid closure element are present, their placements are interrelated. For example, relative misplacement of the rigid closure element may obstruct the lifting tab on the flexible sealing member and thereby prevent the user from lifting the flexible sealing member for access to the enclosed article(s). Since the rigid closure element is typically strongly secured to the flexible pouch, the user is then forced to open the flexible container in some other way, such as cutting or tearing the flexible pouch. Of course, a flexible pouch that has been cut or torn open typically cannot be resealed, and the original purpose of enclosing the article(s) inside the flexible container is thus defeated.
The relative misplacement of either the flexible sealing member or the rigid closure element may also result in higher manufacturing cost due to the scrapping of defective product and/or the necessity to spend more on equipment, training, and inspection in order to minimize the number of defective products reaching the users. In addition, users who encounter defective products may lose faith in the product.
Hence, it would be beneficial to provide a flexible container having both a flexible sealing member and a rigid closure element configured such that the problems described above would be less likely to occur.
SUMMARY OF THE INVENTION
A flexible container includes a flexible pouch having a dispensing aperture through which an interior space is accessible from outside the flexible pouch, a flexible sealing member releasably attached to the flexible pouch and covering the dispensing aperture, and a rigid closure element surrounding the dispensing aperture. The flexible sealing member has at least two lifting tabs for lifting the flexible sealing member and thereby exposing the dispensing aperture. The rigid closure element has a base attached to the flexible pouch and lid connected to the base by a hinge. At least one of the lifting tabs is likely to not be obstructed by the rigid closure element when the lid is in an open condition, thereby remaining usable for lifting the flexible sealing member to expose the dispensing aperture, even if another lifting tab is obstructed by the rigid closure element.
BRIEF DESCRIPTION OF THE DRAWING
Figure 1 shows a perspective view of an exemplary flexible container. Figure 2 shows a perspective view of another exemplary flexible container. DETAILED DESCRIPTION OF THE INVENTION
The term "disposed" refers to an element being attached and positioned in a particular place or position in a unitary structure with other elements.
The term "attach" refers to elements being connected or united by fastening, adhering, bonding, etc. by any method suitable for the elements being attached together and their constituent materials. Many suitable methods for attaching elements together are well-known, including adhesive bonding, pressure bonding, thermal bonding, etc. Such attachment methods may be used to attach elements together over a particular area either continuously or intermittently. Unless indicated otherwise, elements that are described as being attached to each other are attached directly together, with either nothing or only bonding material, e.g., an adhesive, between them. Elements may be attached "permanently", i.e., attached in such a way that one or both of the elements and/or any bonding material that is present must be damaged in order to separate them. This permanent attachment excludes temporary attachment, such as fastening elements together by means of fasteners that may be unfastened. Alternatively, elements may be attached "releasably", i.e., attached in such a way that neither of the elements needs to be damaged in order to separate them.
The term "laminate" refers to elements being attached together in a layered arrangement.
The term "cohesive" refers to the property of a material that, once set, sticks to itself but does not to any significant degree stick to other materials.
The terms "water-permeable" and "water-impermeable" refer to the penetrability of materials in the context of the intended usage of disposable absorbent articles. Specifically, the term "water-permeable" refers to a layer or a layered structure having pores, openings, and/or interconnected void spaces that permit liquid water to pass through its thickness in the absence of a forcing pressure. Conversely, the term "water-impermeable" refers to a layer or a layered structure through the thickness of which liquid water cannot pass in the absence of a forcing pressure. As is well known in the art, a common method for measuring the permeability to water of the materials is a hydrostatic pressure test, also called a hydrostatic head test or simply a "hydrohead" test. Suitable well known compendial methods for hydrohead testing are approved by INDA (formerly the International Nonwovens and Disposables Association, now The Association of the Nonwoven Fabrics Industry) and EDANA (European Disposables And Nonwovens Association). The term "nonwoven" refers to a sheet, web, or batt of directionally or randomly oriented fibers, made by bonding or entangling the fibers through mechanical, thermal, or chemical means. Nonwoven materials exclude paper and products which are woven, knitted, tufted, or felted by wet milling. The fibers are preferably but not necessarily man-made synthetics.
A flexible container may have any shape suitable for enclosing its contents, such as a stack or a roll of substrate sheets, such as wipes. For example, the flexible container may be cylindrical, polygonal, or parallelepipedal in shape.
Each of Figure 1 and Figure 2 illustrates an exemplary embodiment of a flexible container 1 in which a flexible pouch 2 is formed of a flexible polymeric sheet material 3, which may be water-impermeable if the need to contain moisture or the need to exclude moisture exists, or may be water-permeable if neither of these needs exists. The flexible pouch 2 has a top wall 4, an opposing bottom wall (not shown in the figures for clarity), opposing end walls 6 and 7, a front side wall 8, and an opposing rear side wall (not shown in the figures for clarity), arranged in a generally parallelepipedal configuration. The opposing end walls 6 and 7 are closed by end seals 9 and 10. The walls define and enclose the interior space 11 of the flexible pouch 2.
The flexible pouch 2 has a dispensing aperture 12 in its top wall 4. Such a dispensing aperture may be made in another of the walls, instead of or in addition to the top wall. The dispensing aperture 12 may be fully formed in the manufacturing process or may be defined, but not cut out, by perforation of the sheet material 3. The exemplary dispensing aperture 12 shown in the figures has a relatively simple oval shape. The dispensing aperture 12 may have a different relatively simple shape, such as a rectangular shape, or may have a relatively complex shape, such as a generally rectangular shape with rounded corners, or a shape with multiple protrusions. In general, the dispensing aperture 12 may have any shape suitable for access into the interior space 11 of the flexible pouch 2.
A flexible sealing member 13 overlies the dispensing aperture 12 and extends beyond the dispensing aperture in all directions so as to also overlie the immediately surrounding area and thereby cover the entirety of the dispensing aperture 12. The flexible sealing member 13 is formed of a flexible material, which may be identical to the sheet material 3 of which the flexible pouch 2 is formed. The flexible sealing member 13 is releasably attached to the flexible pouch 2 by any method suitable for the materials involved, including, for example, adhesive attachment, cohesive attachment, or a combination of suitable methods. In embodiments in which the dispensing aperture 12 is only defined, but not cut out, by perforation in the manufacturing process, the formation of the dispensing aperture 12 may be completed by the user when lifting the flexible sealing member 13, at which time the attachment of the flexible sealing member 13 to the sheet material 3 may cause the weakened sheet material 3 to tear where it was perforated.
The flexible sealing member 13 has lifting tabs 14 and 15 located along the periphery of the flexible sealing member 13. These lifting tabs 14 and 15 adapted to be grasped by a user and used to lift the flexible sealing member 13 away from the surface of the flexible pouch 2 to thereby expose the dispensing aperture 12. In the embodiment of Figure 1, opposing lifting tabs 14 and 15 are located along the periphery of the flexible sealing member 13 near the opposing end walls 6 and 7 of the flexible pouch 2. Such lifting tabs may be provided along the periphery of the flexible sealing member 13 near the side walls of the flexible pouch 2, instead of or in addition to the locations shown in Figure 1. Similarly, such lifting tabs may be provided anywhere along the periphery of the flexible sealing member 13, instead of or in addition to the locations shown in Figure 1 or previously described. For example, in the embodiment of Figure 2, the lifting tabs 14 and 15 are located along the periphery of the flexible sealing member 13 in adjacent quadrants of the flexible sealing member 13, i.e., one lifting tab 14 is located relatively nearer the end wall 6 of the flexible pouch 2 and the other lifting tab 15 is located relatively nearer the front side wall 8 of the flexible pouch 2.
The exemplary flexible sealing member 13 shown in the figures has a relatively simple oval shape and each of the lifting tabs 14 and 15 is shown in the figures as having the relatively simple shape of a segment of the oval. The flexible sealing member 13 may have a different relatively simple shape, such as a rectangular shape, or may have a relatively complex shape, such as a generally rectangular shape with rounded corners, or a shape with multiple protrusions. In general, the flexible sealing member 13 may have any shape suitable for covering the aperture 12. Likewise, each of the lifting tabs 14 and 15 may have a different relatively simple shape, such as a rounded shape or a rectangular shape, or may have a relatively complex shape, such as a shape with multiple protrusions. In general, each of the lifting tabs 14 and 15 may have any shape suitable for being grasped by the user. The exemplary lifting tabs 14 and 15 shown in the figures generally conform to the general contour of the flexible sealing member 13. In some embodiments, the lifting tabs 14 and 15 may have the forms of distinct protuberances projecting outward from the general contour of the flexible sealing member 13. The provision of multiple lifting tabs reduces the likelihood that the user will not be able to lift the flexible sealing member to gain access to the article(s) enclosed inside the interior space of the flexible pouch. In particular, if relative misplacement of the flexible sealing member and the rigid closure element results in the obstruction of one of the lifting tabs, another lifting tab will likely remain usable. Likewise, if one lifting tab is defective in some way, such as by being adhered securely to the flexible pouch, it is likely that another lifting tab will remain usable. Additionally, the provision of multiple lifting tabs makes it possible to open the dispensing aperture with either hand, thus facilitating access to the enclosed article(s) by both left-handed and right-handed users, as well as by a user whose one hand is occupied in a task, such as holding a child, and who therefore must use his or her free hand, which may be left or right, to reach for the enclosed article(s).
The lifting tabs may be free of attachment to the flexible pouch or may be attached relatively weakly in comparison to the remainder of the flexible sealing member, such as by an adhesive having a low peel force or simply by a lighter coverage of adhesive than is used to attach the remainder of the flexible sealing member to the flexible pouch. Another way of attaching the lifting tabs relatively weakly to the flexible pouch is to provide an adhesive on one surface and a silicone coating on the mating surface. Relatively weakly attached lifting tabs may be desirable because they may remain adhered to the flexible pouch wall during its manufacturing process and thereby decrease the possibility of entanglement in the manufacturing equipment.
A rigid closure element 16 is attached onto the top wall 4 of the flexible pouch 2. This rigid closure element 16 has a base 17 and a lid 18. As is known in the art, such a base and a lid may be connected by a relatively flexible flap forming a hinge 19 as shown in the figures, or may be connected by a multi-piece hinge mechanism. In the figures, the lid 18 is shown in an "open" condition in which the flexible sealing member 13 and the dispensing aperture 12 are accessible. The base 17 and the lid 18 may engage in any suitable manner such that the lid will remain in a "closed" configuration once engaged with the base 17. In order to subsequently gain access to the flexible sealing member 13 and the dispensing aperture 12, the base 17 and the lid 18 must be disengaged such that the lid 18 can be swung on the hinge 19 to the "open" condition shown in the figures.
The exemplary rigid closure element 16 shown in the figures has a relatively simple rectangular shape. The rigid closure element 16 may have a different relatively simple shape, such as a round shape or an oval shape, or may have a relatively complex shape, such as a generally rectangular shape with rounded corners, or a shape with multiple protrusions. In general, the rigid closure element 16 may have any shape suitable for covering the aperture 12.
Examples of suitable engaging bases and lids can be found in U.S. Patent No. 4,156,493, U.S. Patent No. 4,185,754, U.S. Patent No. 6,702,109, U.S. Patent Application Publication No. 2005/0150785, U.S. Patent Application Publication No. 2005/0189367, U.S. Patent Application Publication No. 2005/0011906, U.S. Patent Application Publication No. 2007/0023436, and PCT Publication No. WO 00/064755.
The base 17 is attached to the sheet material 3 of the flexible sealing member 13 by any method suitable for the materials involved. This attachment may be permanent or releasable. As shown in Figure 1, the base 17 is disposed so as to surround the dispensing aperture 12 at a distance from it. The rigid closure element 16 is preferably placed so as to likewise surround the flexible sealing member 13 at a distance from it, thereby leaving both of the lifting tabs 14 and 15 accessible and usable. However, as explained above, some degree of relative misplacement of the rigid closure element 16 and the flexible sealing member 13 may be acceptable because of the provision of the multiple lifting tabs 14 and 15, which increases the likelihood that at least one of the lifting tabs will remain usable, even if the relative misplacement is so great that another lifting tab is obstructed.
Each of the flexible pouch, the flexible sealing member, and the rigid closure element may be formed partially or wholly of a polymeric material, as is typical in the art. The polymeric material(s) utilized in the flexible pouch and/or the flexible sealing member may have the form of a film and may include only a single layer or multiple layers in a laminate structure. Such a laminate structure may include more than one film and/or may include a layer or layers in other forms, such as a fibrous sheet or a foil.
The rigid closure element may be formed partially or wholly of a moldable thermoplastic material, such as polypropylene, polyethylene, polystyrene, acrylonitryl butadiene styrene (ABS), polyester, polyvinyl chloride, polycarbonate or elastomer, or a blend of these materials. The rigid closure element may also, or alternatively, be formed partially or wholly of other materials, such as cardboard, corrugated paper, wood, cardstock, paper, ceramic, and combinations thereof.
The disclosures of all patents, patent applications and any patents which issue thereon, as well as any corresponding published foreign patent applications, and all publications listed and/or referenced in this description, are hereby incorporated herein by reference. It is expressly not admitted that any of the documents or any combination of the documents incorporated herein by reference teaches or discloses the present invention. To the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall govern.
While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims

What is claimed is:
1. A flexible container (1) comprising: a flexible pouch (2) formed of a flexible sheet material (3) and having walls (4, 6, 7, 8) defining and enclosing an interior space (11), the flexible pouch comprising a dispensing aperture (12) formed in at least one of the walls, through which the interior space is accessible from outside the flexible pouch; a flexible sealing member (13) releasably attached to the flexible pouch and overlying and extending beyond the dispensing aperture so as to cover the entirety of the dispensing aperture, the flexible sealing member comprising at least two lifting tabs (14, 15) adapted to be used for lifting the flexible sealing member to thereby expose the dispensing aperture, the lifting tabs being either unattached to the flexible pouch or attached to the flexible pouch relatively more weakly than the remainder of the flexible sealing member; and a rigid closure element (16) comprising a base (17) attached to the flexible pouch and disposed so as to surround the dispensing aperture at a distance from it, and a lid (18) connected to the base by a hinge (19) such that the lid may be swung from an open condition, in which the flexible sealing member and the dispensing aperture are accessible from outside the flexible pouch, to a closed condition, in which the lid is engaged with the base and obstructs access to the flexible sealing member and the dispensing aperture from outside the flexible pouch, wherein at least one of the lifting tabs is not obstructed by the rigid closure element when the lid is in the open condition, thereby remaining usable for lifting the flexible sealing member to expose the dispensing aperture.
2. The flexible container of Claim 1 wherein at least one of the lifting tabs is free of attachment to the flexible pouch.
3. The flexible container of Claim 1 wherein at least one of the lifting tabs is attached to the flexible pouch by a first adhesive having a lower peel force than a second adhesive by which the remainder of the flexible sealing member is attached to the flexible pouch.
4. The flexible container of Claim 1 wherein at least one of the lifting tabs is attached to the flexible pouch by a lighter coverage of adhesive than the remainder of the flexible sealing member.
5. The flexible container of any preceding claim wherein the dispensing aperture is defined by perforation but is not cut out and the flexible sealing member is attached to the portion of the flexible sheet material surrounded by the perforation, such that lifting the flexible sealing member completes the formation of the dispensing aperture by tearing the flexible sheet material at the perforation.
6. The flexible container of any preceding claim wherein the lifting tabs are disposed at opposing portions of the flexible sealing member.
7. The flexible container of any of Claims 1-5 wherein the lifting tabs are disposed at adjacent portions of the flexible sealing member.
8. The flexible container of any preceding claim wherein the flexible sealing member has a substantially oval shape.
9. The flexible container of any of Claims 1 -7 wherein the flexible sealing member has a substantially rectangular shape.
10. The flexible container of any preceding claim wherein the rigid closure element has a substantially oval shape.
EP08737775.0A 2007-04-10 2008-04-09 Easy-opening flexible container Active EP2132108B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08737775T PL2132108T3 (en) 2007-04-10 2008-04-09 Easy-opening flexible container

Applications Claiming Priority (2)

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US11/784,813 US20080253697A1 (en) 2007-04-10 2007-04-10 Easy-opening flexible container
PCT/IB2008/051347 WO2008122961A1 (en) 2007-04-10 2008-04-09 Easy-opening flexible container

Publications (2)

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EP2132108A1 true EP2132108A1 (en) 2009-12-16
EP2132108B1 EP2132108B1 (en) 2014-03-12

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EP (1) EP2132108B1 (en)
JP (1) JP2010522675A (en)
CA (1) CA2683686A1 (en)
ES (1) ES2463691T3 (en)
IL (1) IL201291A0 (en)
MX (1) MX2009010581A (en)
PL (1) PL2132108T3 (en)
WO (1) WO2008122961A1 (en)

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Also Published As

Publication number Publication date
WO2008122961A1 (en) 2008-10-16
EP2132108B1 (en) 2014-03-12
USD671000S1 (en) 2012-11-20
ES2463691T3 (en) 2014-05-29
MX2009010581A (en) 2009-10-22
PL2132108T3 (en) 2014-08-29
IL201291A0 (en) 2010-05-31
JP2010522675A (en) 2010-07-08
CA2683686A1 (en) 2008-10-16
US20080253697A1 (en) 2008-10-16

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