US20050205618A1 - Container fitment having ellipsoidal opening - Google Patents

Container fitment having ellipsoidal opening Download PDF

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Publication number
US20050205618A1
US20050205618A1 US10/804,933 US80493304A US2005205618A1 US 20050205618 A1 US20050205618 A1 US 20050205618A1 US 80493304 A US80493304 A US 80493304A US 2005205618 A1 US2005205618 A1 US 2005205618A1
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United States
Prior art keywords
container
conduit
fitment
geometry
contents
Prior art date
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Abandoned
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US10/804,933
Inventor
Michael Mabee
Christopher Roeder
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Evergreen Packaging Inc
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International Paper Co
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Publication date
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Priority to US10/804,933 priority Critical patent/US20050205618A1/en
Assigned to INTERNATIONAL PAPER COMPANY reassignment INTERNATIONAL PAPER COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MABEE, MICHAEL S., ROEDER, CHRISTOPHER M.
Publication of US20050205618A1 publication Critical patent/US20050205618A1/en
Assigned to EVERGREEN PACKAGING INC. reassignment EVERGREEN PACKAGING INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: INTERNATIONAL PAPER COMPANY
Assigned to CREDIT SUISSE, SYDNEY BRANCH, AS SECURITY AGENT reassignment CREDIT SUISSE, SYDNEY BRANCH, AS SECURITY AGENT SECURITY AGREEMENT Assignors: EVERGREEN PACKAGING INC.
Assigned to EVERGREEN PACKAGING INC. reassignment EVERGREEN PACKAGING INC. TERMINATION AND RELEASE OF SECURITY INTEREST Assignors: CREDIT SUISSE AG, SYDNEY BRANCH
Assigned to THE BANK OF NEW YORK MELLON, AS COLLATERAL AGENT reassignment THE BANK OF NEW YORK MELLON, AS COLLATERAL AGENT SECURITY AGREEMENT Assignors: BRPP, LLC, Evergreen Packaging, Inc.
Abandoned legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D83/00Containers or packages with special means for dispensing contents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D47/00Closures with filling and discharging, or with discharging, devices
    • B65D47/04Closures with discharging devices other than pumps
    • B65D47/06Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/08Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures
    • B65D47/0804Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage
    • B65D47/0809Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage and elastically biased towards both the open and the closed positions
    • B65D47/0814Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage and elastically biased towards both the open and the closed positions by at least three hinge sections, at least one having a length different from the others
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D47/00Closures with filling and discharging, or with discharging, devices
    • B65D47/04Closures with discharging devices other than pumps
    • B65D47/06Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/10Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having frangible closures
    • B65D47/103Membranes with a tearing element
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D5/00Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42Details of containers or of foldable or erectable container blanks
    • B65D5/72Contents-dispensing means
    • B65D5/74Spouts
    • B65D5/746Spouts formed separately from the container

Abstract

A fitment for use in the discharge of pourable contents from a container wherein the constancy of uniform flow of contents from the container is minimally, if at all, adversely affected by the need for accommodating inflow of ambient air into the container as the contents are discharged from the container, the fitment including a conduit an exit end having an ellipsoidal cross-sectional geometry including a minor portion and an major portion, the geometry of the conduit exit being oriented uppermost toward (topwise of) the top end of the container. A method is disclosed.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • Not Applicable
  • STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
  • Not Applicable
  • FIELD OF INVENTION
  • This invention relates to fitments (pour spouts) for containers, particularly paperboard containers, useful for the discharge of pourable substances from the container and for selectively closing and sealing the container against the discharge of its contents.
  • BACKGROUND OF INVENTION
  • Containers for pourable substances, such as juices, milk, etc. commonly include a pouring spout, commonly called a fitment in the industry, which is associated with the top end of the container. Desirably, such pour spout is mounted in covering relationship to an opening defined through the thickness of the top end of the container, includes a tamper evident component and a cap for selectively reclosing the spout for storage of contents remaining in the container.
  • Paperboard is a common material used in the manufacture of containers for pourable substances. Closures for the top end of many paperboard containers include the well-known gable top type end closure wherein the top end of the container includes at least two flat panels which rise at acute angles toward each other from opposite side panels of the container and have their distal edges joined together in the form of a fin which extends across the width of the container.
  • Heretofore it has been common to define an opening through one of the top flat panels and mount a pour spout in covering relationship to the opening to define a conduit through which the contents of the container may be poured from the container.
  • Desirably, the fitment is also provided with a tamper evident component.
  • U.S. Pat. Nos. 5,133,486; 5,735,426 and 6,390,342 disclose fitments which include an integrally formed tear-away membrane which seals a conduit defined by the fitment until the membrane is pulled away, as by a finger ring, to initially open the conduit for the flow of the container contents therethrough. This tear-away membrane provides tamper evident protection for the contents of the container. Further, caps used to reclose the conduit for storage of unused contents of the container are disclosed in these patents. These fitments are of the two-piece variety in that the cap is neither integrally formed with nor otherwise attached to the fitment or container.
  • U.S. Pat. Nos. 3,135,441; 3,239,112; 3,458,080 and 4,022,357 disclose fitments of a one-piece variety wherein the reclosable cap of the fitment is integral with the fitment. These fitments are of the one-piece variety.
  • All known fitments of the prior art employ a true circular opening defined through the wall thickness of the container, usually through a panel which is a part of the top end closure of the container. Further, the known prior art fitments define a true cylindrical conduit for the discharge of the contents of the container. Such conduit establishes a flow path of a finite length along which the contents of the container must flow as they exit the container. This flow path further provides the only path for the entry of ambient air into the container to replace the outgoing volume of pourable substance and thereby avoid the development of a vacuum within the container as the outpouring of contents proceeds. Most commonly when the contents of the container are being discharged through the conduit, the outgoing substance, commonly a liquid, fully fills the conduit and blocks the inflow of replacement air until such time as the vacuum developed inside the container overcomes the outflow of contents. Thereupon, there is a sudden rush of air into the container and a concomitant dramatic fluctuation in the rate of outflow of the container contents. This action is likened to a burp and dramatically disrupts the desired continuity of the outflow of the contents from the container. Much splatter of the contents may occur and/or spillage of the contents outside a receptacle provided for the receipt of the outflowing contents. One effort to avoid this undesirable situation has been to insert a separate air intake tube leading from outside to the interior of the container. Manufacture of fitments with such tubes is difficult and costly. Further, placement of the inboard end of the tube such that the tube itself does not become filled with contents from the container, and thereby fail as an air intake to the container, has not successfully been solved in the prior art. In some instances, the rate of discharge of the contents from the container greatly exceeds the flow capacity of the air infeed tube, thereby defeating the purpose of the tube. Larger tubes detract from the area of the conduit exit through which the contents of the container can flow, thereby causing the outflow of the contents to be undesirably slow.
  • SUMMARY OF INVENTION
  • In accordance with the present invention, there is provided a fitment for use in the discharge of pourable contents from a container wherein the constancy of uniform flow of contents from the container is minimally, if at all, adversely affected by the need for accommodating inflow of ambient air into the container as the contents are discharged from the container through a conduit defined by the fitment. This constancy of uniform flow of contents is effected by forming at least the exit end of the conduit with an ellipsoidal cross-sectional geometry including a minor portion and a major portion wherein the minor portion of the ellipsoidal geometry of the conduit exit is oriented vertically uppermost toward (topwise of) the top end of the upright container. By this orientation of the fitment, the contents of the container exit via the major portion of the conduit exit end geometry while ambient air simultaneously enters the container via the minor portion of the conduit geometry.
  • Preferably the present fitment includes a tear-away membrane disposed within the conduit and is substantially the same as the cross-sectional geometry of the conduit at the location of the membrane such that the perimeter of the memrane is initially bonded to the inner wall of the conduit to close the conduit.
  • In accordance with one aspect of the present invention, the point of initiation of the tearing away of the membrane of the present fitment preferably is selected to be associated with the minor portion of the opening. Thus, force required for initiation of the tearing away of the membrane is minimized and only gradually increases as the membrane is further torn away from the wall of the conduit, thereby enhancing the uniformity of tearing away of the membrane.
  • The fitment of the present invention further includes a reclosable cap component which is integrally hinged to the outboard rim of the conduit wall to define a fitment of the one-piece variety.
  • BRIEF DESCRIPTION OF THE FIGURES
  • FIG. 1 is a schematic representation of a prior art gable top container having a prior art fitment affixed to a top panel of the gable top;
  • FIG. 2 is a top plan view of one embodiment of a fitment depicting various of the features of the present invention;
  • FIG. 3 is a representation of a further embodiment of a fitment embodying various of the features of the present invention;
  • FIG. 4, is top plan view of the fitment of FIG. 3;
  • FIG. 5 is a side elevation view, in section, of the fitment depicted in FIG. 4 and taken generally along the line 5-5 of FIG. 4.
  • FIG. 6, is a side elevation view, in section, of the fitment depicted in FIG. 4 and taken generally along the line 6-6 of FIG. 4;
  • FIG. 7 is a side elevation view, in section, of a fitment of the present invention as affixed to a top panel of a gable top type container;
  • FIG. 8 is detail view, in section, of that portion of the fitment depicted in FIG. 6 taken generally along the line 8-8 of FIG. 6;
  • FIG. 9 is a detailed view, in section, of that portion of the fitment depicted in FIG. 5 in section, taken generally along the line 9-9 of FIG. 5;
  • FIG. 10 is a detailed view, in section, of that portion of the fitment depicted in FIG. 6, taken generally along line 10-10 of FIG. 6;
  • FIG. 11 is a detailed view, in section, of that portion of the fitment depicted in FIG. 6 taken generally along line 11-11 of FIG. 6;
  • FIG. 12 is a detailed view, in section, of that portion of the fitment depicted in FIG. 6, taken generally along line 12-12 of FIG. 6;
  • FIG. 13 is a plan view of an alternative embodiment of a geometrical shape of an opening through a fitment of the present invention;
  • FIG. 14 is a plan view of another alternative embodiment of a geometrical shape of an opening through a fitment of the present invention;
  • FIG. 15 is a plan view of another alternative embodiment of a geometrical shape of an opening through a fitment of the present invention;
  • FIG. 16 is a schematic representation of another alternative embodiment of a fitment of the present invention;
  • FIG. 17 is a representation of the fitment depicted in FIG. 16 with its lid closed; and,
  • FIG. 18 is a representation of the right-hand side, of the fitment depicted in FIG. 17.
  • DETAILED DESCRIPTION OF INVENTION
  • FIG. 1 depicts a prior art gable top type paperboard container 10. The top end 12 of the container is closed as by multiple panels folded inwardly of the center of the container to define first and second lateral inclined panels 14 and 16 (among others) having their distal edges 18 and 20 bonded together to define a fin 24. The depicted container includes an opening 58 (See FIG. 7) through the thickness of the top panel 14 and a fitment 26 affixed to the panel in overlying and covering relationship to the opening, thereby providing a means for the dispensing of the contents of the container out through the fitment. Other containers having pour spouts affixed to the top end of a side wall of the container have been proposed. Further, the prior art includes containers having pour spouts associated with a flat top end of the container. The present fitment is also useful in these and other containers.
  • FIG. 2 depicts one embodiment of a fitment 26 embodying various of the features of the present invention. In this embodiment, the fitment includes a flat circumferential base flange 34, an upstanding wall 36 defining an open-ended conduit 38 providing fluid flow communication between the ambient environment and the interior of a container to which the fitment is affixed. In the embodiment depicted in FIG. 2, the conduit is closed by a tamper evident membrane 40 which extends across and closes the conduit 38 until such time as the membrane is removed as by a pull-ring 42. A cap 44 is hinged to the wall 36 for temporarily closing the conduit against material flow through the conduit, either into or out of the container after the membrane 40 has been removed.
  • Referring to FIGS. 3-12, and initially FIG. 7, one embodiment of the present invention provides a fitment 26 comprising a flat circumferential flange 34 adapted to be bonded in leak-tight relationship to a panel 14 of a container 10 and covering an opening 58 defined through the thickness of the panel 14.
  • The embodiment depicted in FIGS. 3-12 is substantially the same as the embodiment depicted in FIG. 2 aside from the geometry of the conduit through which material, etc. exits or enters the container. Thus, like numerals are used to designate like components of these embodiments except where deemed more appropriate for understanding the invention.
  • In the depicted embodiment of FIGS. 3-12, the flange 34 of the fitment is adhesively bonded to the outer surface 66 of the panel 14 in overlying and covering relationship to the opening 58.
  • Whereas the base flange 34 is shown as being bonded to the outer surface 66 of the panel 14 of the container, it is more common to insert the fitment wall 38 through the opening 58 from the interior of the container so that the base flange 34 is bonded to the inner surface 68 of the panel 14.
  • As thus bonded to the top panel of the container, the fitment defines a pour spout for the discharge of the contents of the container therethrough. To this end, the present fitment includes a wall 36 upstanding from the flange 34 and which defines an open ended conduit 38 which, at one of its opposite ends 60 (entrance), (see FIG. 7) is in fluid flow communication through the opening 58 in the top panel to the interior of the container, and the other of its opposite ends 62 (exit) is open to ambient environment external of the container.
  • Referring to FIGS. 2 and 3 specifically, constancy of uniform flow of contents from the container is effected by forming the exit end 62 of the conduit 38 with a generally ellipsoidal cross-sectional geometry. By “generally” it is meant that the planar cross-section of the exit end of the conduit 38 has at least one major portion 54 and at least one relatively minor and smaller portion 50, the at least one minor portion 50 being oriented vertically above the major portion when the fitment is affixed to the top end 12 of an upright container. In certain embodiments, the transition 70 (FIGS. 13-15, for example) between the major and minor portions is a continuous curve and in other embodiments, the transition may be a bend (for example see FIGS. 14 and 15) as depicted in FIGS. 14 and 15, or other combination of geometries (for example, see FIGS. 2, 4, 13-16). The definition includes a true ellipse (FIG. 4), a tear drop geometry (FIG. 2, and other geometries. FIGS. 2, 4, and 13-16 depict various geometries of the cross-section of the conduit exit opening which are deemed to be useful in the present invention. One skilled in the art will readily recognize other similar geometries for the opening which provide the desired functions of the opening as set forth herein.
  • In the embodiment depicted in FIG. 2, the ellipsoidal cross-sectional geometry of the conduit 38 defines a first (minor) portion 50 having an apex 52 and a second and larger (major) portion 54 having an apex 56. For present purposes, this relationship between the minor and major portions of the ellipsoidal cross-sectional geometry of the conduit 38 may be more specifically defined with reference to the aspect ratio of the geometry of the cross-sectional geometry of the conduit. Specifically, in the present invention, the aspect ratio (height “h” divided by width “w”) of the cross-sectional geometry of the conduit 38 is greater than one (See FIG. 2), thereby distinguishing the geometry of the conduit of the present fitment from prior art circular conduits in fitments.
  • When the fitment of the present invention is affixed to an upright container (as depicted in FIG. 1 and in the top view of FIG. 2, the height (h) of the ellipsoidal geometry (depicted in FIG. 2), is aligned substantially coincident with the vertical centerplane 46 of the upright container 10. In a preferred embodiment, the height dimension of the ellipsoidal geometry of the present fitment is coincident with the vertical centerplane 46 of the container, but it will be recognized that the entire fitment may be moved laterally of the centerplane of the container either to the left or to the right as viewed in FIG. 2, thereby displacing the height dimension out of the centerplane of the container. Moreover, whereas it is preferred that the height dimension of the ellipsoidal geometry of the conduit of the present fitment be parallel to the centerplane of the container, whether coincident with or displaced laterally of, the centerplane, as also depicted in FIG. 2, the height dimension of the ellipsoidal geometry may be rotated to the left or right with respect to the centerplane of the container if desired. Angular deviation of the height dimension of the geometry, however, desirably is limited to not more than about 50 degrees either left or right from the centerplane of the container as depicted by angles “A” and “B” of FIG. 2.
  • In accordance with one aspect of the present invention, the geometry of the conduit, the location of the fitment being most vertically of the container to which the fitment is affixed, and the orientation of the fitment minor portion vertically above its major portion, provide for the outpouring (discharge) of the contents of the container primarily through that portion of the conduit defined by the major portion of the cross-sectional geometry of the conduit. Simultaneously, because the bulk, if not all, of the outpouring contents from the container pass through the major portion of the geometry, the minor portion of the geometry of the conduit remains open for the inflow of ambient air into the container to replace the volume of contents being poured out of the container. The flow of the contents out of the container and the flow of air into the container are depicted by the arrows “C” and “D”, respectively, of FIGS. 4 and 7. By reason of this feature of the present invention, the present inventor provides for elimination or at least substantial reduction of the prior art problem of “burping” and resultant erratic flow of contents from the container and the myriad of undesirable results of such erratic flow. Contrariwise, the flow of contents from a container having a fitment of the present invention associated therewith is constant and smooth, providing a well-controlled and even-volume stream of contents exiting the container through the conduit. Moreover, because the present invention provides a relatively large pathway for the flow of ambient air into the container, it has been found that the contents of the container can be more rapidly discharged, all without the undesirable aspects of the prior art fitments.
  • The cross-sectional geometry of the opening 40 (FIG. 7) through the top panel of the container preferably is of substantially the same size and geometry as the cross-sectional geometry of the conduit 38 defined by the wall of the fitment of the present invention, but such opening 40 may assume other geometries.
  • The wall 36 upstanding from the flange 34 defines a conduit 38 through which the contents of the container may be poured (discharged). Preferably, the cross-sectional area of the conduit defined by the wall 36 is substantially constant over substantially the entire length of the conduit, but it is acceptable for the cross-sectional area of the conduit to vary along the length of the conduit by an amount which is insufficient to adversely affect the desired outflow of the container contents as described herein. For example, the cross-sectional area of the conduit at its entrance end 60 may be larger, but preferably not smaller, than the cross-sectional area of the conduit at its outboard exit opening 62.
  • Preferably, internally of the conduit 38 there is provided a tear away membrane 40 having its perimeter 41 integrally formed with the wall 36 (see also FIGS. 8 and 9). A finger pull ring 42 substantially like the pull rings of the prior art, is attached to the membrane at a location 72 along the perimeter 41 of the membrane whereby insertion of a finger into the ring and applying a pulling force up and outwardly of the conduit, ruptures the membrane 40 initially at the location 72, and further application of a pulling force to the ring effects full tearing away of the membrane from the wall 36, thereby opening the conduit 38 for the passage of the contents of the container out of the container. Thus, the membrane/pull ring combination serves as a tamper evident component of the fitment. In a preferred embodiment, the pull ring is attached to the membrane only at the most vertical portion 73 of the minor portion 50 of the cross-sectional geometry of the conduit (see FIG. 4).
  • As noted, in accordance with one aspect of the present invention, the point of initiation 72 (FIG. 8) of the tearing away of the membrane of the present fitment preferably is selected to be coincident with the minor portion 50 of the opening geometry, preferably the most vertical portion of the minor portion. Thus, it is preferred that the geometry of the present fitment include a minor portion which relatively smoothly transitions into the major portion, thereby minimizing the required increase in the force required to tear away the membrane as the tear proceeds along the perimeter of the membrane in a direction away from the minor portion.
  • The fitment of the present invention further includes a cap 44 useful for closing the conduit 38 of the fitment as may be desired to preserve contents of the container which may desirably be allowed to remain in the container, for later use, for example. The cap of the present fitment includes a generally planar top 74 having an inner surface 76 which faces the outboard rim 88 of the wall 36 when the cap is in a closed position. As seen in FIG. 6, an outer wall 80 extends outwardly from the inner surface 76 of the cap top 74 at a location adjacent to and along the outer perimeter 82 of the top. Radially inwardly of the outer wall 80 there is provided an inner wall 84 which also projects outwardly from the inner surface 76 of the top of the cap, such inner wall being concentric with, but spaced radially inwardly of, the outer wall 80 to define a void annular space 86 therebetween. The material of choice for the fitment, hence the cap and its walls, is a polymeric material, such as LDPE, which is sufficiently flexible and resilient as will permit the outer rim 88 of the wall 36 of the conduit (see FIG. 12) to be received within the annular space 80 defined by the double walls of the cap, to releasably close and seal the conduit. As desired, the outer rim 88 of the wall 36 may be provided with a circumferential projection 90 which may be frictionally snapped into a corresponding circumferential groove 92 defined in the outer wall 80 of the cap.
  • The embodiment of FIG. 16 depicts the fitment in its “open” attitude, that is, with the cover hinged open. In FIG. 16, the tamper resistant seal and its accompanying pull ring are depicted in their sealing attitude with respect to the conduit 50. In FIG. 17, the fitment is depicted with the cap in its closed attitude. FIG. 18 depicts a side perspective view of the embodiment of FIG. 17.
  • With reference to several of the Figures, especially FIG. 10, the cap of the present fitment is integrally formed with the wall 36 of the fitment. In the depicted embodiment, the joinder between the cap and the base element is in the form of a hinge 100, one end 102 of which is integrally formed with the wall 36 and the opposite end 104 of which is integrally formed with the outer wall 80 of the cap. The depicted hinge includes three elements comprising first and second elongated elements 106, 108 respectively, each of which is provided with a reduced thickness 110 generally centrally of the length thereof and a third element 112 which is integrally formed with the first and second elements and includes a central portion 114 which expands from a folded configuration centrally thereof to aid in retention of the cap in its open position, but which permits the cap to hinge to its closed position. It will be recognized by one skilled in the art that other configurations of the cap and the perimetral rim of the wall of the base component may be employed for releasably closing the conduit with the cap.
  • The present invention further includes a method for controlling the constancy of discharge of pourable contents of a container fitted with a pour spout associated with a top end wall of the container comprising the steps of establishing a open ended conduit between the interior and the exterior of the container, defining a cross-sectional geometry for the conduit, the cross-sectional geometry including at least a major portion and at least a smaller minor portion, and affixing the pour spout to the container with the minor portion of the cross-sectional geometry disposed vertically above the major portion of the cross-sectional geometry, whereby the contents of the container are preferentially discharged from the container through the at least one major portion and ambient air substantially simultaneously enters the container through the at least one minor portion of the geometry.

Claims (17)

1. A fitment for a container having a top end and a wall associated with the top end comprising
means defining an opening through said wall associated with said top end of said container,
a circumferential flange member,
a wall circumscribing said opening through said container wall associated with said top end of said container and upstanding from said flange member,
said wall defining an conduit having entrance and exit ends through which contents of said container may be discharged,
at least said exit end of said conduit having a substantially ellipsoidal cross-sectional geometry having at least one major portion and at least one minor portion,
said minor portion being disposed vertically above said major portion when said fitment is affixed to said container.
2. The fitment of claim 1 wherein said cross-sectional geometry of at least said exit end of said conduit has an aspect ratio of less than one.
3. The fitment of claim 1 wherein said container and said fitment each includes a longitudinal centerplane and said centerplanes are coincident when said fitment is affixed to the top end of said container.
4. The fitment of claim 1 and including a cap member integrally formed in hinged relationship with said wall defining said conduit.
5. The fitment of claim 2 wherein said cap member includes first and second annular projections extending from a surface thereof, said projections being spaced apart from one another to define therebetween a void annular space, said annular space having a geometry substantially like said ellipsoidal cross-section geometry of said conduit and adapted to receive therein an outboard rim of said wall to thereby releasably close and seal said conduit against the passage of the contents of said container therethrough.
6. The fitment of claim 1 and including a tear away membrane disposed across and closing said conduit.
7. The fitment of claim 6 and including pull ring means affixed to said tear away flap at a location within said minor portion of said cross-sectional geometry of said conduit thereby providing for localization of an initial tear away force applied through said pull ring.
8. In a fitment for attachment to a wall portion of the top end of a container having pourable contents and adapted to circumscribe an opening through the thickness of the wall portion of the top end of the container and including means for attachment of the fitment to the container, and a wall defining a conduit having an inboard open end and an
outboard open end having an outboard rim, for the discharge of the contents of the container therethrough, the improvement comprising
a cross sectional geometry for said outboard open end of said conduit which includes at least one major portion of a first size and at least one minor portion of a second and smaller size, said minor portion of said geometry being disposed most topwise of the top end of the container when the fitment is attached to the container, whereby ambient air enters the container through said minor portion of said geometry substantially simultaneously with the discharge of contents from the container through said major portion of said geometry.
9. The improvement of claim 8 and including a cap member integrally formed with said wall of said base member, said cap including an perimetral rim and including an annular void space defined adjacent said perimetral rim and adapted to capture therein said outboard rim of said wall of said base portion to releasably close and seal the conduit defined by the wall.
10. The improvement of claim 8 wherein said cross sectional geometry is ellipsoidal.
11. The improvement of claim 8 wherein said wall of said base member is configured as an open ended conduit.
12. In a fitment for attachment to a wall portion of the top end of a container having pourable contents, the improvement comprising
a conduit defined by said fitment for the discharge of contents from the container, said conduit having an exit opening of a cross-sectional geometry which includes at least one major portion of a first size and at least one minor portion of a second and smaller size, said minor portion of said geometry being disposed most topwise of the container when the fitment is attached to the top end of the container whereby said contents are preferentially discharged from the container through said at least one major portion and ambient air substantially simultaneously enters the container through said at least one minor portion of the geometry.
13. The fitment of claim 12 wherein said cross-sectional geometry of said conduit is ellipsoidal.
14. The fitment of claim 12 wherein said cross-sectional geometry of at least said exit end of said conduit has an aspect ratio of less than one.
15. A method for controlling the constancy of discharge of a container fitted with a pour spout associated with a top end wall of the container comprising the steps of
establishing a open ended conduit between the interior and the exterior. If the container,
defining a cross-sectional geometry for said conduit, said cross-sectional geometry including a first major portion and a second and smaller minor portion, and
affixing said pour spout to said container with said minor portion of said cross-sectional geometry disposed vertically above said major portion of said cross-sectional geometry, whereby said contents of the container are preferentially discharged from the container through said at least one major portion and ambient air substantially simultaneously enters the container through said at least one minor portion of the geometry in the course of pouring of the contents from the container.
16. The method of claim 15 wherein said cross-sectional geometry of said conduit is ellipsoidal.
17. The method of claim 15 wherein said cross-sectional geometry of at least said exit end of said conduit has an aspect ratio of less than one.
US10/804,933 2004-03-18 2004-03-18 Container fitment having ellipsoidal opening Abandoned US20050205618A1 (en)

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US20150274330A1 (en) * 2009-11-30 2015-10-01 Tetra Laval Holdings & Finance S.A. Method of manufacturing packaging container, spout closure, and packaging container
US20120228339A1 (en) * 2009-11-30 2012-09-13 Tetra Laval Holdings & Finance S.A. Method of manufacturing packaging container, spout closure, and packaging container
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US20150217910A1 (en) * 2014-01-31 2015-08-06 Gateway Plastics, Inc. Flex hinge closure with drain-back channel
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US10173816B2 (en) * 2014-07-22 2019-01-08 Aptargroup, Inc. Closure with a removable membrane having an improved separability configuration
JP2018188213A (en) * 2017-05-11 2018-11-29 凸版印刷株式会社 Plug
US10479562B2 (en) * 2017-07-05 2019-11-19 Chase Corporation Pull ring seal system for containers
US20190009951A1 (en) * 2017-07-05 2019-01-10 Chase Corporation Pull Ring Seal System for Containers
EP3715276A1 (en) * 2019-03-26 2020-09-30 Tetra Laval Holdings & Finance S.A. Opening device for a packaging for pourable products
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