US3828963A - Recessed crown cap - Google Patents

Recessed crown cap Download PDF

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Publication number
US3828963A
US3828963A US00225508A US22550872A US3828963A US 3828963 A US3828963 A US 3828963A US 00225508 A US00225508 A US 00225508A US 22550872 A US22550872 A US 22550872A US 3828963 A US3828963 A US 3828963A
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US
United States
Prior art keywords
liner
closure
molding punch
radius
roll
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.)
Expired - Lifetime
Application number
US00225508A
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English (en)
Inventor
J Moller
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.)
Continental Can Co Inc
Original Assignee
Continental Can Co 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 Continental Can Co Inc filed Critical Continental Can Co Inc
Priority to US00225508A priority Critical patent/US3828963A/en
Priority to CA148,597A priority patent/CA967910A/en
Priority to JP47104592A priority patent/JPS4889089A/ja
Priority to GB613373A priority patent/GB1415052A/en
Application granted granted Critical
Publication of US3828963A publication Critical patent/US3828963A/en
Priority to JP1978108818U priority patent/JPS5634618Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • 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
    • B65D41/348—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt the tamper element being rolled or pressed to conform to the shape of the container, e.g. metallic closures

Definitions

  • ABSTRACT Price Assistant ExaminerStephen Marcus Attorney, Agent, or Firm-Diller, Brown, Ramik & Wight [5 7] ABSTRACT
  • This disclosure relates to a roll-0n closure for bottles wherein an end panel is connected to a depending skirt through a radiused portion and a transition portion with the radiused portion being recessed relative to the skirt.
  • the cap configuration permits a liner molding punch of the necessary diameter to fully mold the liner to be inserted into the closure. It further permits the molding punch to be substantially centered relative to the end panel whereby a portion of the molded liner engaging the radiused portion is of a substantially uniformed thickness and the thickness thereof may be held to a minimum while still capable of producing optimum sealing results.
  • the roll-on closure construction and liner configuration permits the closure to be applied utilizing much less than normal pressure.
  • Roll-on closures have been generally used for beverage bottle closures.
  • Such closures include a skirt and an end panel with the end panel having formed thereon a liner which is configurated to form a seal with the finish of the bottle with the seal being of a type which is gas tight even under the relatively high pressures which may exist within the bottle.
  • the liners are molded in place within the closures and in recent years much experimentation has been devoted to the liner configuration so as to assure the desired seal between the liner and the bottle finish.
  • Certain of the liners have been provided with depending peripheral portions engageable with the external periphery of the bottle finish.
  • This peripheral portion is initially of a diameter well in excess of the diameter of the bottle finish and in the application of the closure, a radiused portion joining the end panel to the skirt of the closure is deformed inwardly with the result that the liner is also deformed inwardly into sealing contact with the periphery of the finish.
  • Considerable deformation of the radiused portion is necessary with the result that loadings on the order of 600 pounds have been required.
  • closure configuration Another advantage of the closure configuration is that the radiused portion being already recessed, a minimum of further deformation is required in the application of the closure to the bottle. The net result is that a good seal may be effected with there being a marked reduction in the necessary application pressure to a pressure on the order of 350 pounds to 400 pounds.
  • a further feature of the new roll-on closure configuration is that the liner molding punch may engage the transition portion of the closure and substantially form therewith a seal to prevent undesired extrusion of the liner material. This will assure against localized extrusion of the liner material and at the same time assure the existence of sufficient liner material to define the predetermined liner configuration.
  • a further specific advantage of the closure configuration is that at the time of the final molding of the liner, the closure, through its cooperation with the liner molding punch, is substantially centered with the result that the liner is also centered and the depending portion of the liner which engages the radiused portion is of a substantially uniform thickness.
  • FIG. 1 is a fragmentary exploded elevational view showing a roll-on closure formed in accordance with this invention in position for application to the neck finish of a bottle.
  • FIG. 2 is an enlarged fragmentary vertical sectional view taken through a partially formed closure after it has been blanked, drawn and trimmed.
  • FIG. 3 is a view similar to FIG. 1 and shows the same subsequent to a beading and lancing operation with a liner being formed therein by means of a liner molding punch.
  • FIG. 4 is a sectional view similar to FIG. 2 and shows the closure applied to a bottle, only the upper closing tool being illustrated.
  • FIG. 5 is a sectional view similar to FIG. 3 but with a different configuration and liner being formed.
  • FIG. 6 is a sectional view similar to FIG. 5 showing the closure sitting on a glass bottle and the upper closing tool in position for applying the same.
  • FIG. 7 is a sectional view similar to FIG. 4 and shows the closure of FIG. 5 applied to a bottle.
  • FIG. 1 a closure formed in accordance with this invention, the closure being generally identified by the numeral 10.
  • the closure 10 includes an end panel 11 and a depending skirt 12, the skirt 12 being generally cylindrical and terminating downwardly in a circular edge 13.
  • the skirt 12 is of the double knurled type and includes upper knurling l4 and lower knurling 15. Below the lower knurling 15, the skirt 12 is cut so as to have formed therein a plurality of circumferentially extending and circumferentially spaced narrow slots 16 which are separated by bridges 17.
  • the closure 10 is particularly configurated for cooperation with a bottle, generally identified by the numeral 18.
  • the bottle 18 may be formed of any suitable conventional material and includes a neck finish 20 with which the closure 10 will be sealed when placed thereon.
  • the upper neck portion of the bottle 18 is provided with threads 21 with which the roll-on closure 10 will be interlocked after the same is applied.
  • the internal diameter of the skirt 12 is such that the closure 10 may be readily placed thereon, while the skirt 12 is closely spaced from the threads 21.
  • the neck of the bottle 18 is provided with a shoulder 22 beneath which the lower edge 13 of the closure 10 is intended to be rolled in.
  • the illustrated closure is of the tamper indicating type and when the closure is removed from the bottle 18, the bridges 17 will rupture and a lower skirt portion 23 below the slots 16 will remain on the bottle.
  • the skirt 12 terminates at the upper end thereof in a radiused portion 24.
  • a suitable liner is applied against the underside of the end panel 11 with the liner extending at least partially around the radiused portion 24.
  • the skirt 12 and the end panel 11 in the areas of their intersection are deformed further so as to include a radiused portion 25 which is recessed relative to the skirt 12 and which is connected to the skirt 12 by means of a downwardly and outwardly sloping transition portion 26.
  • That portion of the closure 10 in which the necessary liner is to be molded is now of a lesser diameter than the internal diameter of the skirt 12, and a liner molding punch may be readily inserted within the skirt 12 and form a seal with the transition portion 26.
  • the liner molding punch may closely fit within the skirt l2 and have an initial centering effect with respect thereto. The closure will be finally centered by the engagement of the liner molding punch with the transition portion 26.
  • FIG. 3 it will be seen that there is illustrated the closure 10 with a liner, generally identified by the numeral 28, applied by means of a liner molding punch 30.
  • the liner 28 is formed from a suitable compound and is molded in the conventional manner by first placing a glob of the compound within the closure 10 on the end panel 11 while the closure 10 is inverted, after which the molding punch 30 enters into the closure and engages the glob of compound and shapes the same to the liner configuration illustrated in FIG. 3.
  • the liner 28 includes a central portion 31 of a minimum thinness which is integrally connected to an outer portion 32 of a greater thickness, the liner portion 32 being positioned for engagement with the end of the finish of the bottle 18 in a manner illustrated in FIG. 4 and to be described hereinafter.
  • the liner portion 32 is defined in part by an inner edge surface 33 which merges into the central liner portion 31.
  • the liner 28 also includes a depending portion 34 which extends along and engages the radiused portion 25.
  • the liner portion 34 terminates in a relatively flat surface 35 which is generally planar.
  • the neck finish 20 of the bottle 18 includes an end surface 37 and a peripheral surface 38.
  • the diameter of the peripheral surface 38 is such that it is freely received in a projecting portion 34 of the liner 28 and the end surface 37 engages the surface of the liner portion 32 outwardly of the side surface 33 thereof.
  • the closing tool 40 When the closing tool 40 moves down it will initially engage the radiused portion 25 of the crown cap in the manner illustrated in FIG. 3. Continued downward movement of the closing tool 40 will result in a reforming of the radiused portion so that it now includes a radiused portion 45, which may be decreased in radius, of a 90 extent.
  • the radiused portion 45 terminates in a substantially cylindrical portion 46.
  • the transition portion 26 is also deformed and appears as a substantially conical transition portion 47.
  • the liner portion 32 is deformed so as to tightly fit about the end surface of the neck finish 20.
  • the liner portion 34 has been wiped down around the peripheral surface 38 of the neck finish 20 so as to form a complete seal therewith.
  • the liner includes a central portion 51 of minimum thickness engaging the end panel 11.
  • the liner 50 also includes a peripheral portion 52 which is of a greater thickness than the portion 51 and which has the inner boundary thereof defined by a sloping side surface 53.
  • the liner 50 further includes a depending portion 54 which engages the radiused portion 25 of the closure 10.
  • the depending portion 54 terminates in a lower surface 55. It is to be noted that the surfaces 53 and 55 are aligned and form surfaces of a common cone.
  • the liner 50 is molded by means of a liner molding punch 56.
  • the punch 56 includes a rounded terminal corner 57 which is particularly configurated to internest with the transition portion 56 of the closure.
  • the liner molding punch 56 is of a diameter closely approaching the internal diameter of the skirt 12.
  • the initial relationship of the liner 50 with respect to the neck finish 20 is illustrated. It is to be noted that the internal diameter of the liner portion 54 is only slightly greater than the diameter extends radially inwardly of the external neck finish surface 38. It is also to be noted that the liner portion 52 extends radially inwardly of the neck finish so that a complete mating surface is provided between the end surface 37 and the neck finish 20 and the liner portion 52.
  • a roll-on closure prior to being assembled upon an associated bottle comprising an end panel and a depending peripheral skirt, a readily deformable radius portion between said end panel and said peripheral skirt, said radius portion including a first concavely inwardly opening radius most immediately adjacent said end panel and a second concavely outwardly opening radius most immediately adjacent said peripheral skirt, a liner within said roll-on closure having a first liner portion engaging said end panel and a second liner portion engaging said first and second radiuses of said radius portion, said peripheral skirt having an internal surface defining a molding punch centering guide, said first radius being radially inwardly offset from said peripheral skirt and from said molding punch centering guide surface, whereby a liner molding punch will freely pass into said peripheral skirt, the roll-on closure will be substantially centered relative to the molding punch by the molding punch centering guide surface during the molding of the liner, and the molding punch will seat against said second radius thereby assuring a substantially uniform thickness of said second liner portion, and said liner being of a diameter less than that of
  • the roll-on closure as defined in claim 1 including a downwardly and outwardly sloping transition portion between said second concavely outwardly opening radius and said molding punch centering guide, said transition portion having an intermediate diameter corresponding to the intended liner molding punch external diameter, and said liner second portion terminating at said transition portion.
  • a method of molding a liner in a roll-on closure comprising the steps of forming a roll-on closure having an end panel and a depending peripheral skirt, a readily deformable radius portion between the end panel and the peripheral skirt, the radius portion including a first concavely inwardly opening radius most immediately adjacent the end panel and a second concavely outwardly opening radius most immediately adjacent the peripheral skirt, and the peripheral skirt having an internal surface defining a molding punch centering guide; disposing liner material between the interior of the closure and a molding punch, relatively telescopically moving the molding punch and the closure such that the latter is centered relative to the molding punch by means of the molding punch centering guide, seating the molding punch against the second concavely outwardly opening radius todefine an area between the latter, the first concavely inwardly opening radius, the end panel and the terminal end face of the molding punch, and molding the liner material into a liner within the aforementioned area.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
US00225508A 1972-02-11 1972-02-11 Recessed crown cap Expired - Lifetime US3828963A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US00225508A US3828963A (en) 1972-02-11 1972-02-11 Recessed crown cap
CA148,597A CA967910A (en) 1972-02-11 1972-08-02 Recessed crown cap
JP47104592A JPS4889089A (cs) 1972-02-11 1972-10-20
GB613373A GB1415052A (en) 1972-02-11 1973-02-08 Container closures
JP1978108818U JPS5634618Y2 (cs) 1972-02-11 1978-08-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00225508A US3828963A (en) 1972-02-11 1972-02-11 Recessed crown cap

Publications (1)

Publication Number Publication Date
US3828963A true US3828963A (en) 1974-08-13

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ID=22845166

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US00225508A Expired - Lifetime US3828963A (en) 1972-02-11 1972-02-11 Recessed crown cap

Country Status (4)

Country Link
US (1) US3828963A (cs)
JP (2) JPS4889089A (cs)
CA (1) CA967910A (cs)
GB (1) GB1415052A (cs)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883025A (en) * 1973-04-12 1975-05-13 Grace W R & Co Gaskets for container closures
US4036388A (en) * 1974-05-28 1977-07-19 W. R. Grace & Co. Sealing gaskets for container closures
FR2358356A2 (fr) * 1976-07-13 1978-02-10 Grace W R Ltd Joints pour fermetures de recipients
US4114775A (en) * 1976-03-11 1978-09-19 Japan Crown Cork Co., Ltd. Cap with sealing liner
US4343754A (en) * 1979-09-21 1982-08-10 H-C Industries, Inc. Process and apparatus for molding liners in container closures
US4378893A (en) * 1979-09-21 1983-04-05 H-C Industries, Inc. Composite closure
US4398875A (en) * 1980-04-28 1983-08-16 Toyo Seikan Kaisha, Ltd. Molding tool for forming a closure shell liner
EP0138585A3 (en) * 1983-10-17 1986-07-30 Metal Closures Limited Improvements in or relating to closures
US5650113A (en) * 1992-07-28 1997-07-22 Owens-Illinois Closure Inc. Method of making plastic beverage closure
US5800764A (en) * 1995-12-26 1998-09-01 Alcoa Closure Systems International, Inc. External venting method for forming closure liners
ES2153256A1 (es) * 1997-08-25 2001-02-16 Zapata Innovative Closures Inc "una maquina y un metodo para fabricar sellos sin forro de plastico y/o bandas de evidencia de violacion para cierres".
US20140309496A1 (en) * 2010-10-14 2014-10-16 Medivators Inc. Combined irrigation and rinsing tube set
US20210237943A1 (en) * 2018-10-31 2021-08-05 Daiwa Can Company Cap

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4683603B2 (ja) * 2001-08-31 2011-05-18 大和製罐株式会社 密封用ライナー付きロールオンキャップ
JP4667971B2 (ja) * 2005-06-17 2011-04-13 ユニバーサル製缶株式会社 キャップ

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1054295A (cs) *
US2823422A (en) * 1950-11-08 1958-02-18 Continental Can Co Manufacture of closure seals having formed cushion pads therein
US3004297A (en) * 1958-08-12 1961-10-17 Anchor Hocking Glass Corp Method for forming a gasket
US3028033A (en) * 1957-08-01 1962-04-03 Anchor Hocking Glass Corp Closure
US3096898A (en) * 1960-10-17 1963-07-09 Owens Illinois Glass Co Container and closure cap therefor
US3219004A (en) * 1962-04-27 1965-11-23 Metal Closures Ltd Closures
US3360148A (en) * 1965-10-23 1967-12-26 Continental Can Co Closure with a molded ring gasket
US3503534A (en) * 1968-11-26 1970-03-31 Continental Can Co Bottle cap having protective skirt edge
US3520436A (en) * 1968-11-20 1970-07-14 Continental Can Co Closure having a coated interior

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1054295A (cs) *
US2823422A (en) * 1950-11-08 1958-02-18 Continental Can Co Manufacture of closure seals having formed cushion pads therein
US3028033A (en) * 1957-08-01 1962-04-03 Anchor Hocking Glass Corp Closure
US3004297A (en) * 1958-08-12 1961-10-17 Anchor Hocking Glass Corp Method for forming a gasket
US3096898A (en) * 1960-10-17 1963-07-09 Owens Illinois Glass Co Container and closure cap therefor
US3219004A (en) * 1962-04-27 1965-11-23 Metal Closures Ltd Closures
US3360148A (en) * 1965-10-23 1967-12-26 Continental Can Co Closure with a molded ring gasket
US3520436A (en) * 1968-11-20 1970-07-14 Continental Can Co Closure having a coated interior
US3503534A (en) * 1968-11-26 1970-03-31 Continental Can Co Bottle cap having protective skirt edge

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883025A (en) * 1973-04-12 1975-05-13 Grace W R & Co Gaskets for container closures
US4036388A (en) * 1974-05-28 1977-07-19 W. R. Grace & Co. Sealing gaskets for container closures
US4114775A (en) * 1976-03-11 1978-09-19 Japan Crown Cork Co., Ltd. Cap with sealing liner
FR2358356A2 (fr) * 1976-07-13 1978-02-10 Grace W R Ltd Joints pour fermetures de recipients
US4343754A (en) * 1979-09-21 1982-08-10 H-C Industries, Inc. Process and apparatus for molding liners in container closures
US4378893A (en) * 1979-09-21 1983-04-05 H-C Industries, Inc. Composite closure
US4398875A (en) * 1980-04-28 1983-08-16 Toyo Seikan Kaisha, Ltd. Molding tool for forming a closure shell liner
EP0138585A3 (en) * 1983-10-17 1986-07-30 Metal Closures Limited Improvements in or relating to closures
US5650113A (en) * 1992-07-28 1997-07-22 Owens-Illinois Closure Inc. Method of making plastic beverage closure
US5800764A (en) * 1995-12-26 1998-09-01 Alcoa Closure Systems International, Inc. External venting method for forming closure liners
ES2153256A1 (es) * 1997-08-25 2001-02-16 Zapata Innovative Closures Inc "una maquina y un metodo para fabricar sellos sin forro de plastico y/o bandas de evidencia de violacion para cierres".
US20140309496A1 (en) * 2010-10-14 2014-10-16 Medivators Inc. Combined irrigation and rinsing tube set
US20140316205A1 (en) * 2010-10-14 2014-10-23 Medivators Inc. Combined irrigation and rinsing tube set
US9572483B2 (en) * 2010-10-14 2017-02-21 Medivators Inc. Combined irrigation and rinsing tube set
US9615731B2 (en) * 2010-10-14 2017-04-11 Medivators Inc. Combined irrigation and rinsing tube set
US20210237943A1 (en) * 2018-10-31 2021-08-05 Daiwa Can Company Cap
US11834228B2 (en) * 2018-10-31 2023-12-05 Daiwa Can Company Cap

Also Published As

Publication number Publication date
GB1415052A (en) 1975-11-26
JPS5477751U (cs) 1979-06-02
CA967910A (en) 1975-05-20
JPS4889089A (cs) 1973-11-21
JPS5634618Y2 (cs) 1981-08-15

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