EP2061706A1 - Tamper-indicating package, and a closure and container for such a package - Google Patents

Tamper-indicating package, and a closure and container for such a package

Info

Publication number
EP2061706A1
EP2061706A1 EP06802731A EP06802731A EP2061706A1 EP 2061706 A1 EP2061706 A1 EP 2061706A1 EP 06802731 A EP06802731 A EP 06802731A EP 06802731 A EP06802731 A EP 06802731A EP 2061706 A1 EP2061706 A1 EP 2061706A1
Authority
EP
European Patent Office
Prior art keywords
skirt
closure
liner
neck finish
ratchet
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
EP06802731A
Other languages
German (de)
French (fr)
Other versions
EP2061706B1 (en
Inventor
Frank Flak, Jr.
James L. Gregory
Ramsey J. Haylett
Thomas A. Kozlowski
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.)
BPrex Healthcare Brookville Inc
Original Assignee
Owens Illinois Closure Inc
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
Application filed by Owens Illinois Closure Inc filed Critical Owens Illinois Closure Inc
Publication of EP2061706A1 publication Critical patent/EP2061706A1/en
Application granted granted Critical
Publication of EP2061706B1 publication Critical patent/EP2061706B1/en
Not-in-force 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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • 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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/04—Discs

Definitions

  • the present disclosure is directed to a tamper-indicating package, and to a closure and container for such a package, in which the closure and container are constructed such that the tamper-indicating mechanism is activated before loss of sealing engagement between the closure and the container neck finish.
  • the present disclosure is directed to a tamper-indicating package, and to a closure and a container for such a package, in which the closure and the container are constructed such that a tamper-indicating mechanism on the closure is activated before loss of sealing engagement between the closure and the container neck finish.
  • the present disclosure embodies a number of aspects that can be implemented separately from or in combination with each other.
  • a tamper-indicating package in accordance with one aspect of the present disclosure includes a container having a neck finish with an open end, at least one external thread segment, and first and second sets of angularly spaced ratchet teeth in diametrically opposed arrays spaced from the open end of the neck finish.
  • a closure has a base wall with an annular skirt and at least one internal thread segment on the skirt for engagement with the external thread segment on the container neck finish to secure the closure to the container.
  • a circumferential array of angularly spaced flexible resilient ratchet wings extend counterclockwise from an inner surface of the tamper band at an angle to such inner surface.
  • a flexible resilient sealing liner is provided on the base wall within the skirt, and has an annular surface that faces radially outwardly toward the skirt and axially away from the base wall.
  • the ratchet wings are resiliently flexed by the ratchet teeth radially outwardly toward the tamper band during clockwise application of the closure to the container neck finish, and abut clockwise-oriented abutment faces on the ratchet teeth to resist counterclockwise unthreading of the closure from the neck finish so that removal of the closure from the neck finish frangibly separates the tamper band from the skirt.
  • Resilient engagement of the liner surface with the open end of the container neck finish is such that the tamper band is separated from the skirt before loss of sealing engagement between the liner and the open end of the neck finish.
  • the open end of the neck finish preferably has a radially inwardly extending trim flange, which may be flexible, resilient and deformed axially inwardly by engagement with the liner surface. Resilient engagement of the liner surface with the trim flange is such that the tamper band is separated from the skirt before loss of sealing engagement between the liner and the trim flange.
  • the ratchet wings preferably extend from an inside surface of the tamper band onto an inside surface of the closure skirt and frangibly connect the tamper band to the skirt.
  • Each ratchet tooth of each set on the container neck finish preferably is diametrically opposed to an associated ratchet tooth of the opposing set, such that all ratchet teeth are simultaneously engaged by ratchet wings on the closure skirt.
  • the flexible resilient liner preferably includes barrier material resistant to migration of gases, water vapor and/or flavorants through the liner.
  • FIG. 1 is a fragmentary sectional view of a tamper- indicating package in accordance with an exemplary embodiment of the present disclosure
  • FIG. 2 is a sectional view taken substantially along the line 2-2 of FIG. 1;
  • FIG. 3 is a fragmentary elevational view of the container in the package of FIGS. 1 and 2;
  • FIG. 4 is a top plan view of the container illustrated in FIG. 3;
  • FIG. 5 is a fragmentary sectional view taken substantially along the line 5-5 in FIG. 4;
  • FIG. 5 A is a fragmentary sectional view of the portion of FIG. 5 within the area 5 A;
  • FIG. 6 is a fragmentary sectional view of the portion of FIG. 4 within the area 6;
  • FIG. 7 is a fragmentary sectional view on an enlarged scale of the portion of FIG. 6 within the area 7;
  • FIG. 8 is a fragmentary sectional view of the closure in the package of FIGS. 1 and 2;
  • FIG. 9 is a fragmentary sectional view of a closure in accordance with another exemplary embodiment of the disclosure.
  • FIG. 10 is a partially sectioned elevational view of the shell in the closure of FIG. 8;
  • FIG. 11 is a bottom plan view of the closure shell in FIG. 10;
  • FIG. 12 is a sectional view taken substantially along the line 12-12 in FIG. 10;
  • FIGS. 13 and 14 are fragmentary sectional views taken substantially along the lines 13-13 and 14-14 in FIG. 11;
  • FIG. 15 is a fragmentary sectional view taken substantially along the line 15-15 in FIG. 12. Detailed Description of Preferred Embodiments
  • FIGS. 1-2 illustrate a package 20 in accordance with an exemplary embodiment of the present disclosure.
  • Package 20 includes a closure 22 applied to the neck finish 24 of a container 26.
  • Container 26 is illustrated in greater detail in FIGS. 3-7.
  • Neck finish 24, which typically is cylindrical, has one or more external thread segments 28.
  • First and second sets 30,32 of angularly spaced ratchet teeth 34 are in diametrically opposed arrays on neck finish 24 on a side of thread segments 28 remote from the open upper end of the neck finish.
  • Directional words such as "upper” and “lower” are employed by way of description and not limitation with respect to the upright orientation of the package, container and closure illustrated in FIGS. 1, 3 andlO, for example.
  • Ratchet teeth 34 extend radially outwardly from an external ledge 33, which preferably extends entirely around the neck finish. Ledge 33 and ratchet teeth 34 maybe solid, as shown, or hollow. Each ratchet tooth 34 has a counterclockwise-facing cam surface 35 and a clockwise-facing abutment surface 36. Ratchet teeth 34 may be identical, but preferably are non-identical to facilitate removal of container neck finish 24 from its forming mold.
  • Container 26, including neck finish 24, preferably is formed in an extrusion blow molding operation, as described for example in detail in above-referenced U.S. Patent 6,533,136.
  • a trim flange 38 is formed at the open end of the container neck finish during a post-mold trimming operation by means of a suitable knife blade or the like to separate the container neck finish from an integrally formed moil or another container.
  • This trimming operation forms a trimmed surface 40 (FIG. 5A) on which there is no vestige caused by mold mismatch or the like during the molding operation.
  • Trimmed surface 40 which is annular (FIG. 4) and extends around the open end of the container neck finish, may be in a plane perpendicular to the axis of the container neck finish as illustrated in FIG.
  • trimmed surface 40 may nominally be perpendicular to the axis of the neck finish as noted, and undersurface 41 (FIG. 5A) of trim flange 38 may be at a nominal angle of 45° to the neck finish axis.
  • Container 26 may be of any suitable material, such as a polyethylene.
  • the trim flange can be relatively rigid, or can be flexible and resilient.
  • Closure 22 is illustrated in detail in FIGS. 8 and 10-15.
  • Closure 22 includes a one- piece shell 42 of compression molded or injection molded plastic construction, such as polypropylene for example.
  • Shell 42 has a base wall 44 and an annular skirt 46.
  • Skirt 46 is illustrated as extending from the periphery of base wall 44 in the exemplary embodiment of the disclosure. However, in other embodiments of the disclosure, there may be an additional skirt disposed radially outwardly of skirt 46 to match the sidewall contour of the container to which the closure will be applied.
  • One or more internal thread segments 48 are provided on the inside surface of skirt 46.
  • a tamper band 50 is frangibly connected to skirt 46 of closure shell 42.
  • shell 42 as molded (FIGS.
  • tamper band 50 preferably forms an integral axial extension from the end of skirt 46 remote from base wall 44. Tamper band 50 separates from skirt 46, as will be described, to indicate that the package has been opened. In the exemplary embodiment of the disclosure, this band separation is complete, in that band 50 completely separates from skirt 46.
  • tamper band separation could be partial separation, as described for example in U.S. Patent 4,432,461, 5,295,600 or 6,053,344, and still be within the scope of the present disclosure.
  • a circumferential array of angularly spaced flexible resilient ratchet wings 52 extend from the inner surface of tamper band 50.
  • Ratchet wings 52 preferably are nominally flat as molded and extend counterclockwise at an angle to the inner surface of band 50 as viewed from above (or clockwise as viewed from below in FIGS. 11 and 12).
  • Ratchet wings 52 preferably are at equal angular spacing around the inner surface of tamper band 50.
  • there are eighteen ratchet wings 52 at equal angular spacings of 20° around the inside surface of tamper band 50, and the abutment spaces 36 (FIGS. 4, 6 and 7) of ratchet teeth 34 preferably are at equal angular spacings of 20°.
  • Each ratchet wing 52 preferably extends axially from the inner surface of band 50 onto the inner surface of skirt 46.
  • skirt 46 has an internal ledge 53.
  • Ratchet wings integrally extend along the inside surface of band 50 and skirt 46, and are integrally joined to ledge 53.
  • Ratchet wings 52 preferably do not extend all of the way to the free edge of band 50.
  • Skirt 46 preferably is scored along the line 54 in FIGS. 1 and 8, substantially at the location of section line 12-12 in FIG. 10, following the shell molding operation. This score extends through the integral connection of band 50 to skirt 46, so that band 50 is frangibly connected to skirt 46 by the several ratchet wings 52.
  • ratchet wings may be separate from skirt 46 and connected to skirt 46 by ratchet wings 52 as molded.
  • a liner 56 is provided on the inside or undersurface of closure base wall 44.
  • Liner 56 is of flexible resilient construction, and may be provided on closure base wall 44 in a compression molding or other suitable liner forming operation.
  • Liner 56 has a sealing surface 58 that faces radially outwardly toward skirt 46 and axially away from base wall 44.
  • Surface 58 in the embodiment of FIGS. 1 and 8 is a conical surface, for example having an angle of about 62° to the axis of skirt 46.
  • FIG. 9 illustrates another exemplary embodiment in which the sealing surface 58a of liner 56a is at an angle of about 86° to the axis of the closure skirt.
  • Liner 56 (or 56a) preferably includes a barrier material resistant to migration of gases, water vapor and/or flavorants through the liner.
  • Liner 56 (or 56a) may, for example, be provided in accordance with the disclosure of U.S. Patent 6,371,318 or U.S. Patent 6,399,170.
  • Liner 56 or 56a extends along the entire undersurface of closure base used 44 within surface 58, and preferably slightly radially outward from surface 58 as shown.
  • Closure 22 is applied to container neck finish 24 by threading the closure onto the container neck finish in a clockwise direction as viewed from above.
  • Ratchet wings 52 on closure 22 engage cam surfaces 35 on ratchet teeth 34, and are resiliently flexed by the ratchet teeth radially outwardly toward tamper band 50 and closure skirt 46 during such clockwise application of the closure to the neck finish.
  • ratchet wings 52 preferably are flat as molded, and preferably are at substantially identical angles to the inside surface of tamper band 50 as molded, the ratchet wings may bend to non-flat configurations and/or to non-identical angles to the tamper band during application to the container neck finish.
  • the axial spacings and dimensions between container thread segments 28 and ratchet teeth 34, and between closure thread segments 48 and ratchet wings 52, preferably are such that the thread segments engage each other as the closure is applied to the container before the ratchet wings engage the ratchet teeth.
  • This helps assemble the closure onto the container in automatic capping equipment.
  • Full application of the closure to the container neck finish brings trimmed surface 40 of neck finish trim flange 38 into opposed or abutting engagement with sealing surface 58 of liner 56 (or sealing surface 58a of liner 56a in FIG. 9).
  • the resiliency of liner 56 is such that trim flange 38 compresses the liner.
  • the trim flange 38 maybe such that the trim flange is resiliently flexed inwardly (with respect to the container) by engagement with liner 56 during application of the closure.
  • ratchet wings 52 When closure 22 thereafter is rotated in the counterclockwise or removal direction with respect to container neck finish 24, ratchet wings 52 are brought into engagement with abutment faces 36 of ratchet teeth 34, as illustrated in FIG. 2.
  • a preferred equal angular spacing of abutment faces 36 and ratchet wings 52 ensures that all of the abutment faces 36 are simultaneously engaged by ratchet wings 52, as shown in FIG. 2. This simultaneous engagement facilitates rupture or frangible separation of tamper band 50 from closure skirt 46.
  • the resiliency of liner 56 (or 56a) and/or trim flange 38 is such that tamper band 50 is separated from closure skirt 46 before the loss of sealing engagement between liner 56 (or 56a) and trim flange 38.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

A tamper-indicating package includes a container (26) having a neck finish (24) with an open end, at least one external thread segment (28) , and first and second sets of angularly spaced ratchet teeth (34) in diametrically opposed arrays spaced from the open end of the neck finish. A closure (22) has a base wall (44) with an annular skirt (46) and at least one internal thread segment (48) on the skirt for engagement with the external thread segment on the container neck finish to secure the closure to the container. A circumferential array of angularly spaced flexible resilient ratchet wings (52) extend counterclockwise from an inner surface of a tamper band (50) at an angle to such inner surface. A flexible resilient sealing liner (56) is provided on the base wall within the skirt, and has an annular surface that faces radially outwardly toward the skirt and axially away from the base wall. The ratchet wings (52) are resiliently flexed by the ratchet teeth (34) radially outwardly toward the tamper band during clockwise application of the closure to the container neck finish, and abut clockwise-oriented abutment faces on the ratchet teeth to resist counterclockwise unthreading of the closure from the neck finish so that removal of the closure from the neck finish frangibly separates the tamper band from the skirt. Resilient engagement of the liner surface with the open end of the container neck finish is such that the tamper band is separated from the skirt before loss of sealing engagement between the liner and the open end of the neck finish.

Description

TAMPER-INDICATINGPACKAGE, AND A CLOSURE AND CONTAINERFORSUCHAPACKAGE
The present disclosure is directed to a tamper-indicating package, and to a closure and container for such a package, in which the closure and container are constructed such that the tamper-indicating mechanism is activated before loss of sealing engagement between the closure and the container neck finish. Background and Summary of the Disclosure
Many aseptic-fill packages, such as packages for dairy products, are provided with a foil seal over the end of the container neck finish before the closure is applied to the neck finish. This foil seal functions both to seal the package during shipment, storage and handling, and to provide indication that the package has been opened when the foil seal has been ruptured or removed. However, there is a desire to eliminate the cost associated with provision of this foil seal and the inconvenience of requiring removal of the foil seal by the consumer. The present disclosure is directed to a tamper-indicating package, and to a closure and a container for such a package, in which the closure and the container are constructed such that a tamper-indicating mechanism on the closure is activated before loss of sealing engagement between the closure and the container neck finish.
The present disclosure embodies a number of aspects that can be implemented separately from or in combination with each other.
A tamper-indicating package in accordance with one aspect of the present disclosure includes a container having a neck finish with an open end, at least one external thread segment, and first and second sets of angularly spaced ratchet teeth in diametrically opposed arrays spaced from the open end of the neck finish. A closure has a base wall with an annular skirt and at least one internal thread segment on the skirt for engagement with the external thread segment on the container neck finish to secure the closure to the container. A circumferential array of angularly spaced flexible resilient ratchet wings extend counterclockwise from an inner surface of the tamper band at an angle to such inner surface. A flexible resilient sealing liner is provided on the base wall within the skirt, and has an annular surface that faces radially outwardly toward the skirt and axially away from the base wall. The ratchet wings are resiliently flexed by the ratchet teeth radially outwardly toward the tamper band during clockwise application of the closure to the container neck finish, and abut clockwise-oriented abutment faces on the ratchet teeth to resist counterclockwise unthreading of the closure from the neck finish so that removal of the closure from the neck finish frangibly separates the tamper band from the skirt. Resilient engagement of the liner surface with the open end of the container neck finish is such that the tamper band is separated from the skirt before loss of sealing engagement between the liner and the open end of the neck finish.
The open end of the neck finish preferably has a radially inwardly extending trim flange, which may be flexible, resilient and deformed axially inwardly by engagement with the liner surface. Resilient engagement of the liner surface with the trim flange is such that the tamper band is separated from the skirt before loss of sealing engagement between the liner and the trim flange. The ratchet wings preferably extend from an inside surface of the tamper band onto an inside surface of the closure skirt and frangibly connect the tamper band to the skirt. Each ratchet tooth of each set on the container neck finish preferably is diametrically opposed to an associated ratchet tooth of the opposing set, such that all ratchet teeth are simultaneously engaged by ratchet wings on the closure skirt. The flexible resilient liner preferably includes barrier material resistant to migration of gases, water vapor and/or flavorants through the liner. Brief Description of the Drawings
The disclosure, together with additional objects, features, advantages and aspects thereof, will best be understood from the following description, the appended claims and the accompanying drawings, in which:
FIG. 1 is a fragmentary sectional view of a tamper- indicating package in accordance with an exemplary embodiment of the present disclosure;
FIG. 2 is a sectional view taken substantially along the line 2-2 of FIG. 1;
FIG. 3 is a fragmentary elevational view of the container in the package of FIGS. 1 and 2;
FIG. 4 is a top plan view of the container illustrated in FIG. 3;
FIG. 5 is a fragmentary sectional view taken substantially along the line 5-5 in FIG. 4;
FIG. 5 A is a fragmentary sectional view of the portion of FIG. 5 within the area 5 A;
FIG. 6 is a fragmentary sectional view of the portion of FIG. 4 within the area 6;
FIG. 7 is a fragmentary sectional view on an enlarged scale of the portion of FIG. 6 within the area 7;
FIG. 8 is a fragmentary sectional view of the closure in the package of FIGS. 1 and 2;
FIG. 9 is a fragmentary sectional view of a closure in accordance with another exemplary embodiment of the disclosure; FIG. 10 is a partially sectioned elevational view of the shell in the closure of FIG. 8;
FIG. 11 is a bottom plan view of the closure shell in FIG. 10;
FIG. 12 is a sectional view taken substantially along the line 12-12 in FIG. 10;
FIGS. 13 and 14 are fragmentary sectional views taken substantially along the lines 13-13 and 14-14 in FIG. 11; and
FIG. 15 is a fragmentary sectional view taken substantially along the line 15-15 in FIG. 12. Detailed Description of Preferred Embodiments
The disclosure of U.S. Patent 6,533,136 is incorporated herein by reference.
FIGS. 1-2 illustrate a package 20 in accordance with an exemplary embodiment of the present disclosure. Package 20 includes a closure 22 applied to the neck finish 24 of a container 26. Container 26 is illustrated in greater detail in FIGS. 3-7. Neck finish 24, which typically is cylindrical, has one or more external thread segments 28. First and second sets 30,32 of angularly spaced ratchet teeth 34 are in diametrically opposed arrays on neck finish 24 on a side of thread segments 28 remote from the open upper end of the neck finish. (Directional words such as "upper" and "lower" are employed by way of description and not limitation with respect to the upright orientation of the package, container and closure illustrated in FIGS. 1, 3 andlO, for example. Directional words such as "diametric" or "circumferential" are employed by way of description and not limitation with respect to the axis of the container neck finish and/or the closure skirt as appropriate. The term "thread segment" is employed in its usual broad sense to include both partial and full helical threads, and both continuous and interrupted threads.) Ratchet teeth 34 extend radially outwardly from an external ledge 33, which preferably extends entirely around the neck finish. Ledge 33 and ratchet teeth 34 maybe solid, as shown, or hollow. Each ratchet tooth 34 has a counterclockwise-facing cam surface 35 and a clockwise-facing abutment surface 36. Ratchet teeth 34 may be identical, but preferably are non-identical to facilitate removal of container neck finish 24 from its forming mold.
Container 26, including neck finish 24, preferably is formed in an extrusion blow molding operation, as described for example in detail in above-referenced U.S. Patent 6,533,136. During such container manufacture, a trim flange 38 is formed at the open end of the container neck finish during a post-mold trimming operation by means of a suitable knife blade or the like to separate the container neck finish from an integrally formed moil or another container. This trimming operation forms a trimmed surface 40 (FIG. 5A) on which there is no vestige caused by mold mismatch or the like during the molding operation. Trimmed surface 40, which is annular (FIG. 4) and extends around the open end of the container neck finish, may be in a plane perpendicular to the axis of the container neck finish as illustrated in FIG. 5 A, or maybe a conical surface that extends either upwardly or downwardly with respect to the container neck finish, particularly after the neck finish and trim flange have cooled after the trimming operation. By way of example only, trimmed surface 40 may nominally be perpendicular to the axis of the neck finish as noted, and undersurface 41 (FIG. 5A) of trim flange 38 may be at a nominal angle of 45° to the neck finish axis. Container 26 may be of any suitable material, such as a polyethylene. Depending upon the geometry of trim flange 38, the trim flange can be relatively rigid, or can be flexible and resilient.
Closure 22 is illustrated in detail in FIGS. 8 and 10-15. Closure 22 includes a one- piece shell 42 of compression molded or injection molded plastic construction, such as polypropylene for example. Shell 42 has a base wall 44 and an annular skirt 46. Skirt 46 is illustrated as extending from the periphery of base wall 44 in the exemplary embodiment of the disclosure. However, in other embodiments of the disclosure, there may be an additional skirt disposed radially outwardly of skirt 46 to match the sidewall contour of the container to which the closure will be applied. One or more internal thread segments 48 are provided on the inside surface of skirt 46. A tamper band 50 is frangibly connected to skirt 46 of closure shell 42. In shell 42 as molded (FIGS. 10-15), tamper band 50 preferably forms an integral axial extension from the end of skirt 46 remote from base wall 44. Tamper band 50 separates from skirt 46, as will be described, to indicate that the package has been opened. In the exemplary embodiment of the disclosure, this band separation is complete, in that band 50 completely separates from skirt 46. However, tamper band separation could be partial separation, as described for example in U.S. Patent 4,432,461, 5,295,600 or 6,053,344, and still be within the scope of the present disclosure.
A circumferential array of angularly spaced flexible resilient ratchet wings 52 extend from the inner surface of tamper band 50. Ratchet wings 52 preferably are nominally flat as molded and extend counterclockwise at an angle to the inner surface of band 50 as viewed from above (or clockwise as viewed from below in FIGS. 11 and 12). Ratchet wings 52 preferably are at equal angular spacing around the inner surface of tamper band 50. In the illustrated exemplary embodiment of the disclosure, there are eighteen ratchet wings 52 at equal angular spacings of 20° around the inside surface of tamper band 50, and the abutment spaces 36 (FIGS. 4, 6 and 7) of ratchet teeth 34 preferably are at equal angular spacings of 20°. Each ratchet wing 52 preferably extends axially from the inner surface of band 50 onto the inner surface of skirt 46. As best seen in FIG. 8, skirt 46 has an internal ledge 53. Ratchet wings integrally extend along the inside surface of band 50 and skirt 46, and are integrally joined to ledge 53. Ratchet wings 52 preferably do not extend all of the way to the free edge of band 50. Skirt 46 preferably is scored along the line 54 in FIGS. 1 and 8, substantially at the location of section line 12-12 in FIG. 10, following the shell molding operation. This score extends through the integral connection of band 50 to skirt 46, so that band 50 is frangibly connected to skirt 46 by the several ratchet wings 52. Extension of ratchet wings into skirt 46 enhances the stability of the ratchet wings, and the use of the ratchet wings as the frangible connection to skirt 46 eliminates the need for separately molded leaders. As an alternative, band 50 may be separate from skirt 46 and connected to skirt 46 by ratchet wings 52 as molded.
After molding closure shell 42, and either before or after scoring along the line 54 as preferred, a liner 56 is provided on the inside or undersurface of closure base wall 44. Liner 56 is of flexible resilient construction, and may be provided on closure base wall 44 in a compression molding or other suitable liner forming operation. Liner 56 has a sealing surface 58 that faces radially outwardly toward skirt 46 and axially away from base wall 44. Surface 58 in the embodiment of FIGS. 1 and 8 is a conical surface, for example having an angle of about 62° to the axis of skirt 46. FIG. 9 illustrates another exemplary embodiment in which the sealing surface 58a of liner 56a is at an angle of about 86° to the axis of the closure skirt. Liner 56 (or 56a) preferably includes a barrier material resistant to migration of gases, water vapor and/or flavorants through the liner. Liner 56 (or 56a) may, for example, be provided in accordance with the disclosure of U.S. Patent 6,371,318 or U.S. Patent 6,399,170. Liner 56 or 56a extends along the entire undersurface of closure base used 44 within surface 58, and preferably slightly radially outward from surface 58 as shown. Closure 22 is applied to container neck finish 24 by threading the closure onto the container neck finish in a clockwise direction as viewed from above. Ratchet wings 52 on closure 22 engage cam surfaces 35 on ratchet teeth 34, and are resiliently flexed by the ratchet teeth radially outwardly toward tamper band 50 and closure skirt 46 during such clockwise application of the closure to the neck finish. Whereas ratchet wings 52 preferably are flat as molded, and preferably are at substantially identical angles to the inside surface of tamper band 50 as molded, the ratchet wings may bend to non-flat configurations and/or to non-identical angles to the tamper band during application to the container neck finish. The axial spacings and dimensions between container thread segments 28 and ratchet teeth 34, and between closure thread segments 48 and ratchet wings 52, preferably are such that the thread segments engage each other as the closure is applied to the container before the ratchet wings engage the ratchet teeth. This helps assemble the closure onto the container in automatic capping equipment. Full application of the closure to the container neck finish brings trimmed surface 40 of neck finish trim flange 38 into opposed or abutting engagement with sealing surface 58 of liner 56 (or sealing surface 58a of liner 56a in FIG. 9). The resiliency of liner 56 is such that trim flange 38 compresses the liner. The trim flange 38 maybe such that the trim flange is resiliently flexed inwardly (with respect to the container) by engagement with liner 56 during application of the closure.
When closure 22 thereafter is rotated in the counterclockwise or removal direction with respect to container neck finish 24, ratchet wings 52 are brought into engagement with abutment faces 36 of ratchet teeth 34, as illustrated in FIG. 2. A preferred equal angular spacing of abutment faces 36 and ratchet wings 52 ensures that all of the abutment faces 36 are simultaneously engaged by ratchet wings 52, as shown in FIG. 2. This simultaneous engagement facilitates rupture or frangible separation of tamper band 50 from closure skirt 46. In accordance with the present disclosure, the resiliency of liner 56 (or 56a) and/or trim flange 38 is such that tamper band 50 is separated from closure skirt 46 before the loss of sealing engagement between liner 56 (or 56a) and trim flange 38.
There thus have been disclosed a tamper-indicating package, and a closure and container for such a package, that fully satisfy all of the objects and aims previously set forth. The disclosure has been presented in connection with several exemplary embodiments, and a number of additional modifications and variations have been discussed. Other modifications and variations readily will suggest themselves to persons of ordinary skill in the art in view of the foregoing discussion. The disclosure is intended to embrace all such modifications and variations as fall within the spirit and broad scope of the appended claims.

Claims

Claims
1.
A tamper-indicating package that includes: a container having a neck finish with an open end, at least one external thread segment, and first and second sets of angularly spaced ratchet teeth in diametrically opposed arrays spaced from said open end, and a closure having a base wall with an annular skirt, at least one internal thread segment on said skirt for engagement with said at least one external thread segment to secure said closure to said container, a tamper band frangibly connected to said skirt, a circumferential array of angularly spaced flexible resilient ratchet wings extending clockwise from an inner surface of said tamper band at an angle to said inner surface, and a flexible resilient sealing liner on said base wall within said skirt, said liner having an annular surface that faces radially outwardly toward said skirt and axially away from said base wall, said ratchet wings being resiliently flexed by said ratchet teeth radially outwardly toward said band during clockwise application of said closure to said container neck finish and abutting clockwise-oriented abutment faces on said ratchet teeth to resist counterclockwise unthreading of said closure from said neck finish so that removal of said closure from said neck finish frangibly separates said band from said skirt, resilient engagement of said liner surface with said open end of said neck finish being such that said tamper band is separated from said skirt before loss of sealing engagement between said liner and said open end of said neck finish.
2.
The package set forth in claim 1 wherein said open end of said neck finish has a radially inwardly extending trim flange that is deformed axially inwardly by engagement with said surface of said liner, resilient engagement of said liner surface with said trim flange being such that said tamper band is separated from said skirt before loss of sealing engagement between said liner and said trim flange.
3.
The package set forth in claim 1 wherein said flexible resilient liner includes barrier material resistant to migration of gases, water vapor and/or flavorants through said liner.
4.
The package set forth in claim 1 wherein said ratchet wings extend from said inner surface of said tamper band onto an inner surface of said skirt and frangibly connect said band to said skirt.
5.
The package set forth in claim 4 wherein said ratchet teeth of said sets are diametrically opposed to each other.
6.
The package set forth in claim 1 wherein axial spacings between said external thread segments and said ratchet teeth on said neck finish, and between said internal thread segment and said ratchet wings on said closure, are such that said thread segments engage each other as said closure is applied to said container before said ratchet wings engage said ratchet teeth.
7.
A tamper-indicating package that includes: a container having a neck finish with an open end, a radially inwardly extending trim flange at said open end, at least one external thread segment, and first and second sets of angularly spaced ratchet teeth in diametrically opposed arrays spaced from said open end, and a closure having a base wall with an annular skirt, at least one internal thread segment on said skirt, a tamper band frangibly connected to said skirt, a circumferential array of angularly spaced flexible resilient ratchet wings extending counterclockwise from an inner surface of said tamper band at an angle to said inner surface, and a flexible resilient sealing liner on said base wall within said skirt, said liner having an annular surface that faces radially outwardly toward said skirt and axially away from said base wall, said ratchet wings extending from said inner surface of said tamper band onto an inner surface of said skirt and frangibly connecting said tamper band to said skirt, said ratchet wings being resiliently flexed by said ratchet teeth radially outwardly toward said band during clockwise application of said closure to said neck finish and abutting clockwise-oriented abutmentfaces of saidratchet teeth to resist counterclockwise unthreading of said closure from said neck finish so that removal of said closure from said neck finish frangibly separates said band from said skirt, said ratchet teeth of said sets being diametrically opposed to each other such that said ratchet wings engage said abutment faces of said ratchet teeth simultaneously, resilient engagement of said liner surface with said trim flange being such that said tamper band is separated from said skirt before loss of sealing engagement between said liner and said trim flange.
8.
The package set forth in claim 7 wherein said flexible resilient liner includes barrier material resistant to migration of gases, water vapor and/or flavorants through said liner.
9.
The package set forth in claim 7 wherein axial spacings between said external thread segments and said ratchet teeth on said neck finish, and between said internal thread segment and said ratchet wings on said closure, are such that said thread segments engage each other as said closure is applied to said container before said ratchet wings engage said ratchet teeth.
10.
A tamper-indicating closure that includes a plastic shell having a base wall with an annular skirt, at least one internal thread segment on said skirt, a tamper band frangibly connected to said skirt, and a circumferential array of angularly spaced flexible resilient ratchet wings extending counterclockwise from an inner surface of said tamper band at an angle to said inner surface, and a flexible resilient sealing liner on said base wall within said skirt, said liner having an annular surface that faces radially outwardly toward said skirt and axially away from said base wall.
11.
The closure set forth in claim 10 wherein said ratchet wings extend from said inner surface of said tamper band onto an inner surface of said skirt and frangibly connect said band to said skirt.
12.
The closure set forth in claim 11 wherein said flexible resilient liner includes barrier material resistant to migration of gases, water vapor and/or flavorants through said liner.
13.
A container for a tamper-indicating package, which includes: a neck finish with an open end, a radially inwardly extending trim flange around said open end, at least one external thread segment on said neck finish, and first and second sets of angularly spaced ratchet teeth in diametrically opposed arrays spaced from said open end.
14.
The container set forth in claim 13 wherein said ratchet teeth of said sets are diametrically opposed to each other.
15. A method of making a closure that includes the steps of:
(a) molding a one-piece closure shell that includes a base wall with an annular skirt, at least one internal thread segment on said skirt, a tamper band frangibly connected to said skirt, and a circumferential array of angularly spaced flexible resilient ratchet wings extending counterclockwise from an inner surface of said tamper band at an angle to said inner surface, said ratchet wings extending from said inner surface of said tamper band onto an inner surface of said skirt and frangibly connecting said tamper band to said skirt, and
(b) molding a flexible resilient sealing liner on said base wall within said skirt, said liner having an annular surface that faces radially outwardly toward said skirt and axially away from said base wall.
16.
The method set forth in claim 15 wherein said flexible resilient liner includes barrier material resistant to migration of gases, water vapor and/or flavorants through said liner.
17.
A method of making a container that includes the step of extrusion blow molding a container having a neck finish with an open end, a radially inwardly extending trim flange around said open end, at least one external thread segment on said neck finish, and first and second sets of angularly spaced ratchet teeth in diametrically opposed arrays spaced from said open end.
18.
The method set forth in claim 17 wherein said ratchet teeth of said sets are diametrically opposed to each other.
EP06802731A 2006-09-01 2006-09-01 Tamper-indicating package, and a closure and container for such a package Not-in-force EP2061706B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2006/034060 WO2008027044A1 (en) 2006-09-01 2006-09-01 Tamper-indicating package, and a closure and container for such a package

Publications (2)

Publication Number Publication Date
EP2061706A1 true EP2061706A1 (en) 2009-05-27
EP2061706B1 EP2061706B1 (en) 2010-02-10

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ID=37909200

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Application Number Title Priority Date Filing Date
EP06802731A Not-in-force EP2061706B1 (en) 2006-09-01 2006-09-01 Tamper-indicating package, and a closure and container for such a package

Country Status (7)

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EP (1) EP2061706B1 (en)
AT (1) ATE457275T1 (en)
BR (1) BRPI0622029A2 (en)
CA (1) CA2662135A1 (en)
DE (1) DE602006012234D1 (en)
MX (1) MX2009002173A (en)
WO (1) WO2008027044A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2892789A1 (en) * 2012-12-21 2014-06-26 Abbott Laboratories Liquid nutrition bottle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5975321A (en) * 1990-08-09 1999-11-02 Portola Packaging, Inc. Snap-on, screw-off cap with tamper-evidencing skirt and container neck
JP3447406B2 (en) * 1994-12-16 2003-09-16 株式会社アルコア・クロージャー・システムズ Closing device and synthetic resin cap
JP3611630B2 (en) * 1995-04-10 2005-01-19 株式会社アルコア・クロージャー・システムズ Closing device and synthetic resin cap
US6523710B1 (en) * 1998-02-04 2003-02-25 Walter E. Hidding Tamper resistant bottle cap and neck
US8517194B2 (en) * 2004-03-11 2013-08-27 Berry Plastics Corporation Tamper-indicating closure and package
US20050252878A1 (en) * 2004-05-03 2005-11-17 Alcoa Closure Systems International Tamper-evident package

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008027044A1 *

Also Published As

Publication number Publication date
WO2008027044A1 (en) 2008-03-06
BRPI0622029A2 (en) 2014-04-22
EP2061706B1 (en) 2010-02-10
CA2662135A1 (en) 2008-03-06
ATE457275T1 (en) 2010-02-15
MX2009002173A (en) 2009-03-12
DE602006012234D1 (en) 2010-03-25

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