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US20190337692A1 - Venting closure - Google Patents

Venting closure Download PDF

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Publication number
US20190337692A1
US20190337692A1 US16/005,310 US201816005310A US2019337692A1 US 20190337692 A1 US20190337692 A1 US 20190337692A1 US 201816005310 A US201816005310 A US 201816005310A US 2019337692 A1 US2019337692 A1 US 2019337692A1
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US
United States
Prior art keywords
plug
closure
thinner
arc
top panel
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.)
Abandoned
Application number
US16/005,310
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English (en)
Inventor
Sungsuk Steve Kim
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.)
Silgan White Cap LLC
Original Assignee
Silgan White Cap LLC
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
Priority claimed from US15/968,313 external-priority patent/US20190337691A1/en
Application filed by Silgan White Cap LLC filed Critical Silgan White Cap LLC
Priority to US16/005,310 priority Critical patent/US20190337692A1/en
Assigned to Silgan White Cap LLC reassignment Silgan White Cap LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, SUNGSUK STEVE
Priority to CA3035504A priority patent/CA3035504A1/en
Priority to MX2019002941A priority patent/MX2019002941A/es
Priority to MX2022016442A priority patent/MX2022016442A/es
Publication of US20190337692A1 publication Critical patent/US20190337692A1/en
Abandoned legal-status Critical Current

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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
    • B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
    • B65D41/3428—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges
    • 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
    • B65D41/325—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 with integral internal sealing means
    • 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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1633—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element
    • B65D51/1661—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element by means of a passage for the escape of gas between the closure and the lip of the container mouth

Definitions

  • the present invention relates generally to a closure having a plug seal configuration that allows the closure to interchangeably be fluidly sealed to container neck finishes while providing pressure-relieving plugs.
  • a common problem is a container being under more pressure than the container is designed to safely hold.
  • One solution is to provide vents or plugs at the interface between the container and a closure for the container. This disclosure describes a closure with multiple venting plugs between the closure and container.
  • a closure is centered about a vertical axis.
  • the closure comprises a generally circular top panel having an upper surface, a lower surface and an outer periphery.
  • a skirt extends generally perpendicularly downward from the outer periphery of the top panel.
  • a thread is formed about an inner surface of the skirt.
  • the first plug is located radially inwards relative to the outer periphery of the top panel
  • the second plug is located radially between the first plug and the outer periphery of the top panel
  • the third plug is located radially between the second plug and the outer periphery.
  • each of the three plugs when the closure is coupled to the container inlet each of the three plugs interfaces against a surface of a container inlet.
  • the first plug interfaces against an inner surface near the top of the container inlet
  • the second plug interfaces against an upper surface of the container inlet
  • the third plug interfaces against an outer surface near the top of the container inlet.
  • the top panel includes an interior portion that is located radially inwards relative to the third plug.
  • the interior portion of the top panel has a thickness that is less than the thickness of the remaining exterior portion of the top panel.
  • the interior portion of the top panel requires less pressure to deform than the exterior portion of the top panel.
  • the closure engagement with the container and the closure itself is configured to bear, and in some situations to relieve, pressure exerted by the container's contents. When the container's contents exert a sufficiently high pressure, the interior portion of the top panel deforms upward and away from the container's contents.
  • the first plug In the process of the interior portion of the top panel being deformed, the first plug is correspondingly biased inward towards the central axis of the top panel. As a result, the first plug and the inner surface of the container inlet have a looser seal between each other. As the container's contents exert additional pressure, the interior of the top panel deforms further, and the first plug biases further away from the container inlet, until the container's contents (e.g., the gas at the top of the container) are able to force through the interface between the first plug and the closure.
  • the container's contents e.g., the gas at the top of the container
  • the pressure in the area between the first and second plugs keeps increasing until content forces its way through the interface between the second plug and the container.
  • the pressure in the area between the second and third plugs keeps increasing until content forces its way through the interface between the third plug and the container. Gas that has transited past the third plug has escaped the container and closure into the atmosphere.
  • the second and third plugs have arcs of alternating thickness/width.
  • a closure is centered about a vertical axis.
  • the closure includes a generally circular top panel having an upper surface, a lower surface and an outer periphery.
  • a skirt extends generally perpendicularly downward from the outer periphery of the top panel.
  • On the interior surface of the skirt is a thread to engage with a container inlet.
  • the thread has several vertical channel interrupts to permit more direct fluid communication between the top of the thread and the bottom of the thread.
  • the closure includes three generally annular plugs extending downwards from the lower surface of the top panel. From the center axis to the outer periphery of the top skirt are the first plug, the second plug, and the third plug, in that order. The first plug extends downward the furthest, then the third plug, then the second plug. When in use, the first plug interfaces with the inner surface of the container inlet, the second plug interfaces with the top surface of the container inlet, and the third plug interfaces with the outer surface of the container inlet.
  • the second and third plugs each have alternating widths.
  • the second and third plugs each have three arcs of thinner widths that correspond to the following locations on a clock (11:30-12:30, 3:30-4:30, and 7:30-8:30).
  • the top panel includes two internal ribs at 3:00 and 9:00 on the same clock.
  • the internal ribs extend inwardly and upwardly from the interior surface of the first plug.
  • the internal ribs provide structure support for the top panel, the first plug, and the second and third plugs when the container contents are under sufficient pressure to deform the closure.
  • the closure includes a tamper band that decouples from the sidewall after frangible connections are broken.
  • the tamper band includes a J-band that extends upwardly and radially inwardly from the tamper band.
  • the J-band comprises one or more drain hole apertures positioned at the intersection between the J-band and the tamper band.
  • the J-band comprises a lower end that extends from the tamper band and an upper end opposite the attachment point.
  • the J-band is wider at the upper end than the middle of the J-band.
  • the J-band does not expand in width until the middle of the J-band. In various alternate embodiments, the J-band expands in width linearly from the beginning end of the J-band to the upper end.
  • FIG. 1 is a bottom perspective view of a closure according to one embodiment
  • FIG. 2 is a bottom view of a closure without a J-band, according to one embodiment
  • FIG. 3 is a cross-sectional perspective view of the closure of FIG. 2 according to one embodiment
  • FIG. 4 is an enlarged cross-sectional perspective view of a portion of the closure of FIG. 3 ;
  • FIG. 5 is an enlarged cross-sectional perspective view of another portion of the closure of FIG. 3 ;
  • FIG. 6A is another cross-sectional perspective view of the closure of FIG. 2 according to one embodiment
  • FIG. 6B is another cross-sectional view of the closure of FIG. 2 according to one embodiment
  • FIG. 7 is another cross-sectional perspective view of the closure of FIG. 2 according to one embodiment
  • FIG. 8 is an enlarged cross-sectional perspective view of a portion of the closure of FIG. 7 ;
  • FIG. 9 is an enlarged cross-sectional perspective view of another portion of the closure of FIG. 7 ;
  • FIG. 10 is a cross-sectional perspective view of a closure according to one embodiment
  • FIG. 11 is an enlarged cross-sectional side perspective view of the closure of FIG. 10 ;
  • FIG. 12 is another cross-sectional perspective view from below of the closure of FIG. 2 according to one embodiment.
  • Described herein are one or more closure embodiments that provide three seals to relieve pressure from a container.
  • the three seals are arranged in serial such that pressure needs to escape each of the three seals in turn.
  • the closure also includes one or more internal ribs to provide a non-symmetrical deformation of the closure when under pressure.
  • the second and third seals include alternating arcs of thinner and thicker widths, that, in combination with the internal ribs, provide the opportunity for a steady and controlled release of pressure from closure when the container is under pressure.
  • Closure 10 includes an end wall or top portion, shown as a top panel 12 .
  • Top panel 12 is generally circular in shape and is generally planar (i.e., the outer surface of top panel 12 is flat and positioned substantially in a single plane).
  • Closure 10 includes a sidewall, shown as skirt 14 , and a transition section, shown as a corner section 16 . Corner section 16 extends outwardly and downwardly from the outer, peripheral edge of top panel 12 , and skirt 14 extends downwardly from the outer, peripheral edge of corner section 16 .
  • Skirt 14 is generally annular in cross-section and is substantially perpendicular to the plane defined by top panel 12 .
  • closure 10 may also optionally include a plurality of raised ribs 18 extending radially outward from an outer surface of skirt 14 .
  • ribs 18 may extend vertically along at least a portion of the vertical length of the outer surface of skirt 14 to provide a textured or gripping surface that may facilitate opening of the closure 10 .
  • a container engagement structure configured to interact with a corresponding closure engagement structure located on the neck of the container to which the closure 10 is to be sealingly applied.
  • the container engagement structure may comprise threading 50 that extends inwardly from the inner surface of skirt 14 . Threading 50 is configured to engage corresponding threading present on the container to which closure 10 is attached.
  • closure 10 may include any other number of types of engagement structures, such as but not limited to snap beads, lugs, etc.
  • closure 10 may further include a tamper evidencing structure configured to provide indication to a user that the initial sealing engagement between the closure 10 and container has been disrupted as a result of the closure 10 being partially or entirely removed from the container.
  • the tamper evidencing structure comprises a tamper band 24 coupled to a lower end of skirt 14 by series of frangible connections 30 .
  • frangible connections 30 are configured to break, separating tamper band 24 from skirt 14 .
  • tamper band 24 may include a plurality of pleats 230 and/or a plurality of curved band sections 28 .
  • pleats 230 engage cooperating structures on the neck of the container to prevent closure 10 from being removed from the container without frangible connections 30 breaking. Further, pleats 230 also facilitate application of closure 10 on to the container by allowing tamper band 24 to expand without breaking frangible connections 30 .
  • a sealing ring, or plug 40 extends generally downward from the lower surface 15 of top panel 12 .
  • plug 40 is formed as an annular, uninterrupted, continuous ring or wall extending 360 degrees about the lower surface 15 of the top panel 12 .
  • the plug 40 is defined by a generally circumferentially extending structure formed of two or more wall segments. In such embodiments, each wall segment may be spaced apart from an adjacent wall segment by a portion of the lower surface of the top panel 12 to which no wall segments are attached.
  • a second ring, or second plug 70 extends generally downward from the lower surface of top panel 12 .
  • Plug 70 is located radially inwards relative to the outer periphery of top panel 12 , and radially outwards relative to plug 40 .
  • plug 70 is formed as an annular, uninterrupted, continuous ring or wall extending 360 degrees about the lower surface of the top panel 12 .
  • plug 70 is defined by a generally circumferentially extending structure formed of two or more wall segments. In such embodiments, each wall segment may be spaced apart from an adjacent wall segment by a portion of the lower surface of the top panel 12 to which no wall segments are attached.
  • a third ring, or third plug 80 extends generally downward from the lower surface of top panel 12 .
  • Plug 80 is located radially inwards relative to the outer periphery of top panel 12 , and radially outwards relative to plug 40 and second plug 70 .
  • plug 80 is formed as an annular, uninterrupted, continuous ring or wall extending 360 degrees about the lower surface of the top panel 12 .
  • plug 80 is defined by a generally circumferentially extending structure formed of two or more wall segments. In such embodiments, each wall segment may be spaced apart from an adjacent wall segment by a portion of the lower surface of the top panel 12 to which no wall segments are attached.
  • second plug 70 and third plug 80 include alternating arcs of thicker sections 90 and thinner sections 92 in one or more arcs around plug 10 .
  • Thinner sections 92 include first thinner section 93 , second thinner section 94 and third thinner section 95 .
  • Second plug 70 and third plug 80 are wider in thicker sections 90 than in thinner sections 92 (“wider” as measured along radii extending from the center axis 13 of closure 10 ).
  • second plug 70 and third plug 80 when under pressure from contents of container 60 , tend to deform in thinner sections 92 before thicker sections 90 .
  • Each thinner section 92 has a center 98 , and each center 98 has a distance from the nearest internal rib 46 .
  • the shortest circumferential distance to first thinner plug 93 from the nearest internal rib 46 is 90 degrees of arc of closure 10 .
  • the shortest circumferential distance for the second thinner section 94 and the third thinner section 95 to the nearest internal rib 46 are each 30 degrees of arc of closure 10 .
  • the shortest distance from center 98 of thinner section 92 are different distances from an internal rib (e.g., 120 degrees, 90 degrees, 60 degrees, 45 degrees, 30 degrees, etc.).
  • a central portion 12 a of the top panel 12 may be formed having a thickness that is less than the thickness of an outer portion 12 b of the top panel 12 located radially outwards relative to the plug 40 .
  • the thickened end outer portion 12 b of the top panel 12 provides a reinforced area that limits or prevents distortion of the top panel 12 as the plug 40 engages with a container neck during the application of the closure 10 to a container.
  • the thickness of central portion 12 a of the top panel 12 may be between approximately 0.012 inches and approximately 0.032 inches, more specifically between approximately 0.019 inches and approximately 0.025 inches, and even more specifically approximately 0.022 inches.
  • the thickness of the outer portion 12 b of the top panel 12 may be between approximately 0.025 inches and approximately 0.045 inches, more specifically between approximately 0.032 inches and approximately 0.038 inches, and even more specifically approximately 0.035 inches.
  • the thickness of the wall of the skirt 14 may be between approximately 0.022 inches and approximately 0.042 inches, more specifically between approximately 0.029 inches and approximately 0.035 inches, and even more specifically approximately 0.032 inches.
  • thinner sections 92 are arranged at different positions with respect to internal ribs 46 . As a result, when top panel 12 deforming asymmetrically, the fluid seals at second plug 70 and third plug 80 may leak at one or more of thinner sections 92 , such as first thinner section 93 .
  • the design of the outer surface 41 of the plug 40 is configured to allow closure 10 to be interchangeably engaged to any number of types of container neck finishes to form a seal that prevents fluid communication with the contents of the container when the closure 10 is applied to a container.
  • the closure 10 may be used to seal these and other types of container neck finishes regardless of the material (e.g. PET, HDPE, etc.) from which the container neck is formed.
  • closure 10 includes both thicker sections 90 and thinner sections 92 .
  • FIG. 4 is a detailed view of third thinner section 95 in the upper-right portion of FIG. 3 (as identified in the cross-sectional identifying plane in FIG. 2 ).
  • FIG. 5 is a detailed view of thicker section 90 in the upper-left portion of FIG. 3 (as identified in the cross-sectional identifying plane in FIG. 2 ).
  • first plug 40 extends lower than third plug 80
  • both first plug 40 and third plug 80 extend lower than second plug 70
  • second plug 70 includes inner surface 72 , bottom surface 74 , and outer surface 76 .
  • Bottom 42 of first plug 40 extends height H 4 further than bottom surface 74 of second plug 70 .
  • Third plug 80 includes inner surface 82 , bottom surface 87 (of thinner section 92 ), and outer surface 86 .
  • Bottom 42 of first plug 40 extends height H 7 further than bottom surface 87 of third plug 80
  • bottom surface 87 of third plug 80 extends height H 8 further than bottom surface 74 of second plug 70 .
  • first plug 40 extends lower than third plug 80
  • both first plug 40 and third plug 80 extend lower than second plug 70
  • second plug 70 includes inner surface 72 , bottom surface 74 , and outer surface 76 .
  • Bottom 42 of first plug 40 extends height H 4 further than bottom surface 74 of second plug 70 .
  • Third plug 80 includes inner surface 82 , bottom surface 84 (of thicker section 90 ), and outer surface 86 .
  • Bottom 42 of first plug 40 extends height H 5 further than bottom surface 84 of third plug 80
  • bottom surface 84 of third plug 80 extends height H 6 further than bottom surface 74 of second plug 70 .
  • Third plug 80 also includes bottom surface 87 of thinner section 92 .
  • third plug 80 extends further in thicker sections 90 than in thinner sections 92 .
  • third plug 80 extends a similar distance in both thicker sections 90 and thinner sections 92 .
  • first plug 40 is supported by two internal ribs 46 (also illustrated in FIG. 2 ).
  • Internal ribs 46 extend radially inward from first plug 40 , and upward to top panel 12 .
  • internal ribs 46 are co-molded with first plug 40 (best shown in FIG. 6A ).
  • Internal ribs 46 support first plug 40 from deformation when top panel 12 of closure 10 is under pressure from contents of container 60 .
  • top panel 12 tends to deform further away from internal ribs 46 (e.g., at first thinner section 93 rather than second thinner section 94 or third thinner section 95 ).
  • FIG. 6A is a cross-section taken along a plane that includes two thicker sections 90 of second plug 70 and third plug 80 .
  • FIG. 6B illustrates the coupling between internal rib 46 and first plug 40 .
  • plug 40 is configured such that the outer surface 41 of the plug 40 engages the generally vertically extending annular inner surface 62 of a PET neck finish 60 to provide a fluid-tight seal when the closure 10 is attached to a container having such a PET neck finish 60 .
  • FIG. 7 includes thinner second plug 70 and thinner third plug 80 in the upper-left portion, and as shown in detailed FIG. 9 .
  • FIG. 7 also includes thicker second plug 70 and thicker third plug 80 in the upper-right portion, and as shown in detailed FIG. 8 .
  • closure 10 When closure 10 is coupled to the container, such as when closure 10 is tightly coupled to the container, the container inlet interfaces against first plug 40 , second plug 70 , and third plug 80 .
  • the inner surface 62 of the container inlet interfaces against outer surface 41 of plug 40 creating first fluid seal 48
  • the upper surface 64 of the container inlet interfaces against bottom surface 74 of plug 70 creating second fluid seal 78
  • the outer surface 66 of the container inlet interfaces against inner surface 82 of plug 80 creating third fluid seal 88 .
  • Internal chamber 110 refers to the interior volume of the container and closure 10 , as fluidly sealed by the interface between outer surface 41 and the inner surface 62 of the container inlet.
  • First chamber 112 refers to a first volume enclosed by closure 10 and the top 64 of the container inlet.
  • First chamber 112 is fluidly sealed by first fluid seal 48 and second fluid seal 78 .
  • Second chamber 114 refers to another volume enclosed by closure 10 and the top 64 of the container inlet. Second chamber 114 is fluidly sealed by second fluid seal 78 and third fluid seal 88 .
  • Upper threading chamber 116 is in fluid communication with lower threading chamber 118 , such as via thread gaps 52 (best shown in FIG. 10 ). As a result, both upper threading chamber 116 and lower threading chamber 118 are in fluid communication with an exterior of the container, such as the atmosphere A outside the container.
  • the contents of the container may exert increased pressure on the container and closure 10 .
  • pressure from the contents of the container in chamber 110 will be exerted laterally against the surfaces constraining the pressure.
  • content pressure will be exerted upwards against central portion 12 a of top panel 12 .
  • central portion 12 a biases upwards.
  • plug 40 biases radially inwards towards the center axis 13 of closure 10 .
  • plug 40 biasing radially inwards may comprise plug 40 physically moving radially inwards towards the center axis 13 of closure 10 .
  • plug 40 biasing radially inwards may not involve any physical movement of plug 40 and/or de minimis movement of plug 40 , and instead involves a decrease in the compressive force between outer surface 41 and container inlet's inner surface 62 . As a result of that force being reduced, fluid seal 48 becomes correspondingly weaker.
  • fluid seal 48 becomes too weak to prevent contents (e.g., fluid, gas) escaping from internal chamber 110 to first chamber 112 .
  • a lower pressure for contents in chamber 110 means that there is a lower pressure from contents to escape past fluid seal 48 .
  • lower pressure in chamber 110 means that central portion 12 a of top panel 12 is less deformed, meaning that plug 40 is less biased towards central axis 13 .
  • second fluid seal 78 As contents escape past fluid seal 48 to chamber 112 , the pressure in chamber 112 correspondingly increases. When the pressure of chamber 112 sufficiently increases to a third threshold, second fluid seal 78 is too weak to prevent contents (e.g., fluid, gas) escaping from first chamber 112 to second chamber 114 . In various embodiments, second fluid seal 78 will leak at thinner sections 92 before leaking at thicker sections 90 .
  • contents e.g., fluid, gas
  • both upper threading chamber 116 and lower threading chamber 118 are in fluid communication with an exterior of the container, such as the atmosphere A outside the container.
  • closure 10 provides a mechanism of multiple fluid seals, arranged in series, to provide a safe method for pressure in the container to be relieved. Therefore, the chances of a container experiencing a structural catastrophe (e.g., explosion) are correspondingly reduced.
  • a structural catastrophe e.g., explosion
  • thread 50 is interrupted by vertical channels 52 transiting inner surface of skirt 14 .
  • Channels 52 provide a more direct fluid communication between third fluid seal 88 and atmosphere A, because the fluid communication can transit channels 52 rather than helically transiting along thread 50 .
  • FIG. 12 illustrated therein is a cross-sectional perspective view near a transition 91 from thinner section 92 to thicker section 90 .
  • FIG. 12 is a cross-sectional perspective view of first thinner section 93 transitioning to thicker section 90 .
  • thicker section 90 includes a planar side surface that is aligned with center axis 13 of closure 10 .
  • other transitions are contemplated (e.g., a curve such as a wave-form similar to a sine wave).
  • closures 10 may have any number of internal ribs, including a single internal rib 46 .
  • closures 10 may have any number of thicker sections 90 and thinner sections 92 (e.g., 1-5 each).
  • closure 10 comprises, for example, for first fluid seal 48 and second fluid seal 78 but not third fluid seal 88 , first fluid seal 48 and third fluid seal 88 but not second fluid seal 78 , second fluid seal 78 and third fluid seal 88 but not first fluid seal 48 , only first fluid seal 48 , only second fluid seal 78 , and only third fluid seal 88 .
  • the closures 10 discussed herein may be of various sizes intended to seal containers of various sizes and having various contents.
  • the closures 10 are configured to seal containers such as metal, glass or plastic containers or bottles for holding liquids, granular materials, food, etc.
  • the plug 40 of the closures 10 discussed herein are suitable for maintaining a hermetic seal with the container neck finish to which the closure 10 is attached.
  • closure 10 includes an improved J-band 200 .
  • J-band extends from tamper band 24 of closure 10 .
  • J-band 200 extends inwards and upwards from tamper band 24 .
  • the width of J-band is wider at the top 202 of J-band 200 than it is at the bottom 210 of J-band 200 .
  • the width of J-band steadily and linearly increases along the length of J-band 200 .
  • the difference between the width 204 at the top 202 of J-band 200 and the width 208 at the middle 206 of J-band 200 is the same as the difference between the width 208 at the middle 206 of J-band 200 and the width 208 at the bottom 210 of J-band 200 .
  • J-band 200 maintains a constant width between bottom 210 and middle 206 , and instead the width of J-band steadily and linearly increases starting at middle 206 (best shown in FIG. 3 ).
  • Pleats 230 are arranged periodically around J-band 200 .
  • Pleats 230 include protrusions 232 extending upwards and radially outwards from interior surface 214 of J-band 200 .
  • Pleats 230 partially define cavity 234 on the exterior surface 216 of pleat 230 .
  • the width at various points of pleats 230 corresponds to the widths of various points of J-band 200 at similar distances from tamper band 24 .
  • the width of pleat 230 at the furthest point from tamper band 24 is similarly wide as the width of J-band at top 202 .
  • the width of pleat 230 at middle of pleat 234 is similarly wide to the width of middle 206 of J-band 200 .
  • J-band 200 further includes drain holes 240 , which are arranged periodically around the circumference of J-band 200 .
  • Drain holes 240 have width 242 , which may be increased by virtue of the varying width of J-band 200 relative to drain holes in closures having J-bands with constant widths.
  • closure 10 is configured to seal a container configured to hold consumable or edible products (e.g., beverages, water, food, etc.).
  • closure 10 is configured to seal a container that is a molded (e.g., blow-molded) thermoplastic beverage container configured to hermetically hold a beverage (e.g., water, juice, fortified or nutrient water, tea, sports drink, energy drink, milk, milk-based beverages, etc.).
  • a beverage e.g., water, juice, fortified or nutrient water, tea, sports drink, energy drink, milk, milk-based beverages, etc.
  • closure 10 can be used to seal a wide variety of containers including pouches, jars, metal bottles, paper board cartons, etc.
  • the closures 10 discussed herein may be formed from a plastic or polymer material.
  • the closures 10 may be formed by injection molding or by compression molding.
  • the closures 10 may be injection molded from a polypropylene homopolymer resin.
  • the closures 10 may be made from a clear (e.g., translucent or transparent) polypropylene homopolymer resin, or they may be made from a clear random copolymer polypropylene.
  • the clear material of the closure 10 is such that the engagement structure (e.g., threading 50 ) is visible from the outside of the closure 10 through skirt 14 .
  • the relative dimensions, including angles, lengths and radii, as shown in the Figures are to scale. Actual measurements of the Figures will disclose relative dimensions, angles and proportions of the various exemplary embodiments. Various exemplary embodiments extend to various ranges around the absolute and relative dimensions, angles and proportions that may be determined from the Figures. Various exemplary embodiments include any combination of one or more relative dimensions or angles that may be determined from the Figures. Further, actual dimensions not expressly set out in this description can be determined by using the ratios of dimensions measured in the Figures in combination with the express dimensions set out in this description. It should also be understood that the terminology is for the purpose of description only and should not be regarded as limiting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
US16/005,310 2018-05-01 2018-06-11 Venting closure Abandoned US20190337692A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US16/005,310 US20190337692A1 (en) 2018-05-01 2018-06-11 Venting closure
CA3035504A CA3035504A1 (en) 2018-05-01 2019-03-04 Venting closure
MX2019002941A MX2019002941A (es) 2018-05-01 2019-03-13 Cierre de ventilacion.
MX2022016442A MX2022016442A (es) 2018-05-01 2019-03-13 Cierre de ventilacion.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US29646077 2018-05-01
US15/968,313 US20190337691A1 (en) 2018-05-01 2018-05-01 Venting Closure
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Cited By (6)

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USD885904S1 (en) 2018-05-01 2020-06-02 Silgan White Cap LLC Venting closure
US20210394968A1 (en) * 2020-06-23 2021-12-23 Silgan White Cap LLC Sealing Structures for Closure
WO2021262516A1 (en) 2020-06-23 2021-12-30 Silgan White Cap LLC Sealing structures for closure
US11772852B2 (en) 2020-12-22 2023-10-03 Silgan White Cap LLC Venting closure liner
USD1042132S1 (en) * 2015-05-11 2024-09-17 Silgan White Cap LLC Closure
US12297011B2 (en) 2023-04-05 2025-05-13 Husky Injection Molding Systems Ltd. Method of securing a closure on a container

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US3812994A (en) * 1972-01-05 1974-05-28 Dairy Cap Corp Tamper-proof closure cap
US5743420A (en) * 1993-01-20 1998-04-28 Alcoa Deutschland Gmbh Plastic closure
US6783015B1 (en) * 1998-09-14 2004-08-31 Crown Cork & Seal Technologies Corporation Closure cap
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD1042132S1 (en) * 2015-05-11 2024-09-17 Silgan White Cap LLC Closure
USD885904S1 (en) 2018-05-01 2020-06-02 Silgan White Cap LLC Venting closure
US20210394968A1 (en) * 2020-06-23 2021-12-23 Silgan White Cap LLC Sealing Structures for Closure
WO2021262516A1 (en) 2020-06-23 2021-12-30 Silgan White Cap LLC Sealing structures for closure
EP3953263A4 (en) * 2020-06-23 2023-07-26 Silgan White Cap LLC SEALING STRUCTURES FOR CLOSURES
US11753213B2 (en) * 2020-06-23 2023-09-12 Silgan White Cap LLC Sealing structures for closure
US11772852B2 (en) 2020-12-22 2023-10-03 Silgan White Cap LLC Venting closure liner
US12297011B2 (en) 2023-04-05 2025-05-13 Husky Injection Molding Systems Ltd. Method of securing a closure on a container
US12479630B2 (en) 2023-04-05 2025-11-25 Husky Injection Molding Systems Ltd. Closures with tamper evidence

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