US3187920A - Resilient liner and cap for closing containers - Google Patents

Resilient liner and cap for closing containers Download PDF

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Publication number
US3187920A
US3187920A US211510A US21151062A US3187920A US 3187920 A US3187920 A US 3187920A US 211510 A US211510 A US 211510A US 21151062 A US21151062 A US 21151062A US 3187920 A US3187920 A US 3187920A
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US
United States
Prior art keywords
liner
container
cap
lip
rib
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
US211510A
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English (en)
Inventor
Henry J Dorn
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
Priority to NL288594D priority Critical patent/NL288594A/xx
Priority to BE627697D priority patent/BE627697A/xx
Priority to US211510A priority patent/US3187920A/en
Application filed by Continental Can Co Inc filed Critical Continental Can Co Inc
Priority to BR146465/63A priority patent/BR6346465D0/pt
Priority to FR922908A priority patent/FR1345540A/fr
Priority to ES284723A priority patent/ES284723A1/es
Priority to GB4574/63A priority patent/GB1025933A/en
Priority to DE19631432124 priority patent/DE1432124B1/de
Application granted granted Critical
Publication of US3187920A publication Critical patent/US3187920A/en
Priority to DE2201851A priority patent/DE2201851C3/de
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
    • B65D53/04—Discs
    • 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
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/10—Caps or cap-like covers adapted to be secured in position by permanent deformation of the wall-engaging parts
    • B65D41/12—Caps or cap-like covers adapted to be secured in position by permanent deformation of the wall-engaging parts made of relatively stiff metallic materials, e.g. crown caps

Definitions

  • the ribs During application to the container, the ribs encounter the lip or curvatureroll around the bottle mouth: as pressure is exerted in the axial direction of the container, the ribs are deformed elastically and conform to the lip so that, when a crown cap is crimped to the container ring, a maintained sealing effect results for re- 3,187,920 Patented June 8, 1965 and downward conical surface 13 a groove 14 in which a rib can be molded in the liner.
  • This groove illustratively has a depth from the reference plane of surface 10 of 0.031 inch, with the surface 13 at an angle of 45 degrees to the reference plane.
  • the bottom or root 15 of the groove 14 may have a radius not greater than 0.005 inch provided that the aforesaid depth of 0.031 inch is present in the illustrative practice.
  • the surface 13 joins a second upwardly and outwardly conical surface 17 at a ridge 16 which is 0.005 inch above the reference plane, with the surface 17 at an angle of 45 degrees to such plane.
  • the surface 17 joins a second outwardly and downwardly conical surface 18 at a groove root 19 to provide a second groove 20 with the groove root 19 at 0.017 inch above the reference plane.
  • the surface 18 is at 45 degrees to the reference plane, and joins a third upwardly and outwardly conical surface 21 at a ridge 22 which is 0.005 inch above the reference plane.
  • the surface 21 joins a third downwardly and outwardly conical surface 23 at a groove root 24 to provide a third groove 25.
  • the surface 23 at a corner 26 joins a plane annular surface 27 which is parallel to and 0.008 inch sisting movements of and in the cap due to internal pressure in the container, for example.
  • a superior type of sealing can be attained by having a first rib of greater height for first engaging the container lip, to be resiliently compressed thereagainst, and at least one other and lower rib located farther from the container axis and also resiliently compressed against the container lip during sealing.
  • a compressed elastic annular mass fills the space between the container lip and the cap, with the portion of the annulus nearer the container contents under a greater elastic force than a portion farther from such contents.
  • FIGURE 1 is a diametrical sectionthrough a punch for forming a crown liner of the instant invention
  • FIGURE 2 is a diametrical section of a crown closure shell on a platen and containing a mass of moladble liner material;
  • FIGURE 3 is a diametrical section of a crown closure shell with a molded liner therein, and with the outline of a standard bottle section shown in dotted lines;
  • FIGURE 4 is a diametrical section showing the crown closure in sealing position on a bottle
  • FIGURE 5 is a section corresponding to a part of FIGURE 1, and on a greatly enlarged scale;
  • FIGURE 6 is a corresponding enlarged section corresponding to a part of FIGURE 3.
  • FIGS. 1 to 3 Itis customary to mold liners in crown shells with the shell cavity open upwardly, and such is the position of parts in FIGS. 1 to 3.
  • the closed and sealed bottles are usually stored with their mouths upward, and such is the position in FIG. 4.
  • the several figures show sections; and it will be understood that the standard circular shapes about the'bottle and shell axis A are present, and that the above the reference plane and'illustratively is 0.011 inch wide in the radial direction of the punch.
  • the outer edge 28 of the surface 27 is formed at a fourth upwardly and outwardly conical surface 29 at 45 degrees to the reference plane andendingat a second plane annular surface 30 which can be 0.006 inch wide in the radial direction of the punch, and located parallel to and 0.031 inch above the reference plane 10.
  • the outer edge 31 of the surface 30 is formed by an outer cylindrical surface 32 of the punch, which is joined by the curved surface 33 to the'cylindrical surface 34 with the maximum diameter of 1.0525 inches for the punch, at the edge 35.
  • the surface 32 can havea diameter of 1.029 inches, being smaller than the larger diameter TC and greater than the smaller diameter BC of the crown shell referred to the general axis A of the shell, liner and bottle, for the smooth portion of the shell below (FIGS. 2 and 3) the corrugated portion of the shell skirt and at top corner radius portion TCR.
  • the crown shell CS of FIG. 2 is illustratively of metal, and has an upwardly concave central domed portion CD which originally can have a radius of 6 to 8 inches. This portion CD merges smoothly into the topcorner radius portion TCRyabove which, in FIG. 2, are shown the corrugated edge structures CE.
  • a measured quantity of a ther-mo-plastic material is deposited as a mass PM on the central portion CD of the shell, while the shell is illustratively positioned on a platen BP.
  • the punch P and the platen are heated: such is known, and the specific heating means is not shown.
  • the mass PM may be of a plastisol, for example of fine particles of vinyl chloride polymer resin in a plasticizer therefor-such as dioctyl phthalate.
  • a plasticizer therefor-such as dioctyl phthalate.
  • a plastisol behaves as 'a viscous liquid, essentially without interditfusion of the resin and plasticizer.
  • inter-solution begins, and the plasticizer component becomes more viscous but still capable of flow under pressure at such temperature,by the dissolution of the polyvinyl resin therein: and the hard particles of polyvinyl resin become softer by the penetration of the plasticizer into them.
  • the inter-diffusion produces essential uniformity homogeneity in the mass.
  • this may be 3 to 15 seconds at 300 degrees F., or 1 to 5 seconds at 350 degrees F.; and such complete dissolution of one component into the other completely inter-dissolved and cured mass is elastic, and
  • Such commercial plastisols 'ha've the polyvinyl resin particles and the plasticizer as components; and also often include inert filler particles, waxes and the like to prevent blocking and facilitate the flow during molding, and coloring matter.
  • a property of such plastisols is that of liquidity as delivered and employed for forming the sticky masses PM. Upon'hea'ting, the .mass becomes more viscous and form-maintaining, and adheres to' the inner surface of the crown shell: such'shells may have" a baked coating of vinyl lacquer; The heating may occur in a single stage or in several stages.
  • thernass PM maybe deposited, and, then the shell region CD heated while the hot punch ,P is lowered into the shell, to engage and cause the liquid: mass; to spread radially as indicated by the arrows in FIG. 2.
  • the edge 31 of the punch comes into contact withth'egshell wall, below its corrugations; and acts mechanically to force the periphery of the crownfshell dowriWard,-' while the center of the domeportio'nTCD, isdetained' by the platen,xsothat the radius of the dome is increased.
  • the radiall'y'spreading mass is confined by the engage'ment of the punch edge 31*with the shell, so that flowing material is restricted: against flow.
  • the punch or platen is spring-mounted so that further pressure does not produce change of their relative positions;
  • the hotpuncl'f and shell areheld in confact' with the mass, after its shaping, until the curing is coni'p'lete.
  • a standard crown shell CS is in dicated, with the central dome portion CD having a cross-sectional curvature of FIG. 2 with radii of 6 to 8 inches when the plastisol is inserted, and being modified by the action of the molding punch so the radii are 10 to 11 inches in FIGS. 3 and 4.
  • the thickness of the central portion 40 of the liner, Within the inside ring or rib, can be 0.005 inch.
  • the parts of the liner are shown as produced by the mating parts of the forming punch of FIG. 5: thus the groove 14 of the punch provides the inner rib or ring 14a of the liner, the ridge 16 of the punch provides the groove root 16a of the liner, and so on.
  • the roots 16a and 22a are about 0.009 inch from the inner surface of the metal shell, in the illustrated form; the surface 27a is at a lesser distance due to the curvature of the shell.
  • the portion 2% along the top corner radius can be less than 0.005 inch: its presence being preferred to assure liner adhesion outside the region of the surface 27a.
  • the region 32a indicates a minor local flash which has passed beyond the engagement 31a on the shell by the edge 31 on the punch: noting that this is below the second damming point 35a.
  • the ribs 14a, a and a are engaged with and compressed against the top of the bottle lip BL, as shown in FIG. 4.
  • the material of these ribs spreads radially inward and outward under the compression forces.
  • the crimping tool acts against the periphery of the corrugated region CE of the shell skirt, as indicated by the arrows in FIG. 4, to cause parts CC of the corrugations to engage beneath the locking ring LR of the bottle.
  • the masses 29a, 32a of FIG. 6 are not active, in FIG.
  • the lines 50, 51, 52 respectively represent the prescribed standard or normal shape of the bottle lip, the permissable largest mouth size, and the permissable smallest mouth size. In each instance, it will be noted that all ribs act against the top of the lip.
  • a resilient liner and cap structure for closing a container comprising a cap having a peripheral skirt and a central wall portion, and a liner of elastic material in said cap, said liner having at least two concentric ribs for engaging an upper surface of the lip of the container to be elastically compressed thereagainst, the radially inward rib being deeper than the radially outward rib whereby the inner rib is first engaged with-the upper surface of the container lip and is flattened and compressed thereagainst before the outer rib encounters the container lip.
  • a resilient liner and cap structure for closing a container comprising a cap having a skirt and a central wall portion and a top corner radius portion merging with the skirt and the central wall portion, and a liner of elastic material in said cap and extending over and adhering to the central wall portion thereof, said liner having a plurality of concentric ribs all located for engagement with a top of the lip of the container to be elastically compressed against and deformed thereby, the radially inward rib being deeper and having a greater cross-section of the material and separated from the next outward rib by a groove whose root is spaced from the adjacent cap surface, all said ribs being located radially inward from the cap skirt so that upon compression against the top of the container lip they form an essentially solid mass of elastic material between the container lip and the adjacent parts of the top corner radius and central wall portion of the cap and with said mass spaced from the engagement of the cap with the container.
  • a sealed assembly of a container and a lined cap structure the container having a lip surrounding its mouth and a locking ring, said cap structure including a central wall portion extending over the container mouth, a corrugated skirt in crimped engagement with the locking ring, and a top corner radius portion merging with the central wall portion and terminating short of the corrugations of the skirt, and a liner adherent in said cap, the invention which comprises the presence of an annular part of said liner as a compressed elastic mass between the container lip and the cap structure, the annular portion of said mass adjacent the container mouth exhibiting greater elastic forces than other parts of said mass, and the mass having annular regions exhibiting high elastic forces alternating with annular regions of less elastic forces, with the space between the container and the cap between the top corner radius portion and the skirt corrugations being free of compressed liner material.
  • a resilient liner and cap structure for closing a container of the type having an open mouth of predetermined diameter and a lip portion surrounding said open month, said lip portion having a predetermined inner and outer diameter and said inner diameter being equal to the predetermined diameter of said month; said liner having a plurality of concentric ribs located for engagement with the lip portion of the container, the radially inward rib being deeper and having a greater cross-section than the rib adjacent to and outwardly spaced therefrom, said radially inward rib having a diameter larger than the predetermined diameter of said mouth.
  • a resilient liner and cap structure for closing a container of the type having an open mouth of predetermined diameter and a lip portion surrounding said open month, said lip portion having a predetermined inner and outer diameter and said inner diameter being equal to the predetermined diameter of said mouth; said liner having a plurality of concentric ribs, the radially inward rib having a greater cross-section than the rib adjacent to and outwardly spaced therefrom, said radially inward rib having a diameter larger than the predetermined diameter of said month, said plurality of concentric ribs being located for engagement with the lip portion of the container between the inner and outer diameter of said lip portion, the rib adjacent to the inner diameter of the lip portion being deeper than the other of said ribs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
US211510A 1962-07-23 1962-07-23 Resilient liner and cap for closing containers Expired - Lifetime US3187920A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
NL288594D NL288594A (pt) 1962-07-23
BE627697D BE627697A (pt) 1962-07-23
US211510A US3187920A (en) 1962-07-23 1962-07-23 Resilient liner and cap for closing containers
FR922908A FR1345540A (fr) 1962-07-23 1963-01-28 Capsule à garniture élastique pour la fermeture de récipients
BR146465/63A BR6346465D0 (pt) 1962-07-23 1963-01-28 Aperfeicoamentos em ou relativos a forro resiliente e a uma estrutura de chapinha para fechar um recipiente
ES284723A ES284723A1 (es) 1962-07-23 1963-01-31 Perfeccionamientos en forros elásticos para tapones
GB4574/63A GB1025933A (en) 1962-07-23 1963-02-05 Improvements in and relating to closure caps
DE19631432124 DE1432124B1 (de) 1962-07-23 1963-03-14 Dichtungseinlage fuer Verschlusskappen
DE2201851A DE2201851C3 (de) 1962-07-23 1972-01-15 Dichtungseinlage für Verschlußkappen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US211510A US3187920A (en) 1962-07-23 1962-07-23 Resilient liner and cap for closing containers

Publications (1)

Publication Number Publication Date
US3187920A true US3187920A (en) 1965-06-08

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ID=22787218

Family Applications (1)

Application Number Title Priority Date Filing Date
US211510A Expired - Lifetime US3187920A (en) 1962-07-23 1962-07-23 Resilient liner and cap for closing containers

Country Status (6)

Country Link
US (1) US3187920A (pt)
BE (1) BE627697A (pt)
BR (1) BR6346465D0 (pt)
ES (1) ES284723A1 (pt)
GB (1) GB1025933A (pt)
NL (1) NL288594A (pt)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360148A (en) * 1965-10-23 1967-12-26 Continental Can Co Closure with a molded ring gasket
DE2710704A1 (de) * 1976-03-11 1977-09-22 Crown Cork Japan Deckel und verfahren zum abdichten von behaeltern
EP0037651A2 (en) * 1980-03-21 1981-10-14 Japan Crown Cork Co. Ltd. Molding device for molding a liner on the inside surface of the top panel of a container closure shell
WO2010141844A3 (en) * 2009-06-05 2013-11-07 Abbott Laboratories Tamper evident gasketted container
US8857645B2 (en) 2006-12-27 2014-10-14 Abbott Laboratories Container
USD733320S1 (en) 2013-04-26 2015-06-30 Abbott Laboratories Container
US9387963B2 (en) 2012-04-27 2016-07-12 Abbott Laboratories Container

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5746766A (en) 1980-09-02 1982-03-17 Crown Cork Japan Vessel cover with improved liner
AU545202B2 (en) * 1979-11-24 1985-07-04 Japan Crown Cork Co. Ltd. Closure liner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1054118A (fr) * 1952-07-09 1954-02-08 Système de bouchage universel sans sertissage, et sans joint, pour capsules et couvercles
US2752059A (en) * 1950-11-08 1956-06-26 Continental Can Co Closure with sealing pad having concentric ribs
US2768762A (en) * 1952-10-01 1956-10-30 William Herter Sealing members or elements

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2752059A (en) * 1950-11-08 1956-06-26 Continental Can Co Closure with sealing pad having concentric ribs
FR1054118A (fr) * 1952-07-09 1954-02-08 Système de bouchage universel sans sertissage, et sans joint, pour capsules et couvercles
FR62853E (fr) * 1952-07-09 1955-06-27 Système de bouchage universel sans sertissage et sans joint pour capsules et couvercles
US2768762A (en) * 1952-10-01 1956-10-30 William Herter Sealing members or elements

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360148A (en) * 1965-10-23 1967-12-26 Continental Can Co Closure with a molded ring gasket
DE2710704A1 (de) * 1976-03-11 1977-09-22 Crown Cork Japan Deckel und verfahren zum abdichten von behaeltern
EP0037651A2 (en) * 1980-03-21 1981-10-14 Japan Crown Cork Co. Ltd. Molding device for molding a liner on the inside surface of the top panel of a container closure shell
EP0037651A3 (en) * 1980-03-21 1982-08-11 Japan Crown Cork Co. Ltd. Molding device for molding a liner on the inside surface of the top panel of a container closure shell
US10583969B2 (en) 2006-12-27 2020-03-10 Abbott Laboratories Container
US8857645B2 (en) 2006-12-27 2014-10-14 Abbott Laboratories Container
US9505522B2 (en) 2006-12-27 2016-11-29 Abbott Laboratories Container
US11554893B2 (en) 2006-12-27 2023-01-17 Abbott Laboratories Container
WO2010141844A3 (en) * 2009-06-05 2013-11-07 Abbott Laboratories Tamper evident gasketted container
US9387963B2 (en) 2012-04-27 2016-07-12 Abbott Laboratories Container
US10005596B2 (en) 2012-04-27 2018-06-26 Abbott Laboratories Container
USD733320S1 (en) 2013-04-26 2015-06-30 Abbott Laboratories Container
USD782696S1 (en) 2013-04-26 2017-03-28 Abbott Laboratories Container

Also Published As

Publication number Publication date
BE627697A (pt)
GB1025933A (en) 1966-04-14
NL288594A (pt)
ES284723A1 (es) 1963-06-01
BR6346465D0 (pt) 1973-07-10

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