US3285451A - Pressure closure - Google Patents

Pressure closure Download PDF

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Publication number
US3285451A
US3285451A US440889A US44088965A US3285451A US 3285451 A US3285451 A US 3285451A US 440889 A US440889 A US 440889A US 44088965 A US44088965 A US 44088965A US 3285451 A US3285451 A US 3285451A
Authority
US
United States
Prior art keywords
cap
bottle
skirt
deck
bead
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
US440889A
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English (en)
Inventor
Golde Erich
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3285451A publication Critical patent/US3285451A/en
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
    • 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
    • B65D41/46—Snap-on caps or cap-like covers
    • B65D41/48—Snap-on caps or cap-like covers non-metallic, e.g. made of paper or plastics
    • B65D41/485—Snap-on caps or cap-like covers non-metallic, e.g. made of paper or plastics 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
    • 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
    • B65D41/16—Snap-on caps or cap-like covers
    • B65D41/18—Snap-on caps or cap-like covers non-metallic, e.g. made of paper or plastics
    • B65D41/185—Snap-on caps or cap-like covers non-metallic, e.g. made of paper or plastics 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/20—Sealing means
    • B65D2251/205—Inserted

Definitions

  • This invention relates to bottle closures and more particularly to bottle caps for use on bottles containing carbonated beverages or other liquids which give rise to substantial pressures within the bottles in which they are contained.
  • closure caps made of resilient thermoplastic resins for use on bottles or jars having an outwardly projecting crown or bead at their mouth.
  • Such closures normally comprise principally a substantially fiat main deck member to cover the mouth of a bottle and, downwardly depending from the periphery of the deck member, a skirt member which is provided with an inwardly projecting retention beadwhich is adapted to become locked under the bead of the bottle. It is difficult, however, to fabricate such closures so as to make them effective for use on bottles containing carbonated beverages. The carbon dioxide which is liberated at higher temperatures when the filled bottles are shaken while in transit results in a great increase-in internal pressure and thereby tends to pop the closure off the bottle.
  • Caps which somewhat reduce the effect of this internal pressure by confining it to a smaller area of cap by means of acircular sealing extension which depends from an intermediate portion of the deck of the cap and is adapted to fit tightly against the inside wall of the bottle month.
  • acircular sealing extension which depends from an intermediate portion of the deck of the cap and is adapted to fit tightly against the inside wall of the bottle month.
  • it is difficult to protect the cap against the effects of increased internal pressure because the normal tolerance or variation of the external diameters of the bottle mouth places definite limits on the degree to which the wall thickness of the skirt and of the retention bead, or the stiffness of the resinous material, can be increased. This is particularly true when the closure is intended to be removable and replaceable by hand.
  • the peripheral portion of the upper surface or deck of the cap and its skirt are grooved or perforated by two or more narrow indentations or notches, preferably substantially opposite from each other, which end in the skirt approximately at the level of the retention bead, leaving the portion of the skirt below the retention bead substantially unweakened.
  • Tests have shown that closures provided with such notches, grooves or perforations resist considerably higher internal pressures than caps of equal wall thickness which do not have such notches. An explanation of this effect will be given later in connection with the drawing.
  • the invention results in the further advantage in that the notches or perforations facilitate the removal of the cap from the bottle.
  • the described notches substantially assist in compensating for the tolerance in the external diameter of the mouth of the bottle.
  • the invention can likewise be used for closures which, instead of the aforementioned sealing extension, contain a separate sealing insert adapted to protrude into the mouth of the bottle.
  • a two-component construction is particularly advantageous when the bottle is intended for opening by hand.
  • FIGURE 1 is a section taken along lines A-B of the cap shown in FIGURE 2;
  • FIGURE 2 is a plan view of one embodiment of a cap embodying the present invention.
  • FIGURE 3 shows the cap illustrated in FIGURES 1 and 2 in place on a bottle, viewed from B and in partial section;
  • FIGURE 4 is a schematic drawing presented to illustrate the aforementioned retention effect
  • FIGURE 5 is a section taken along lines C-D shown in FIGURE 6;
  • FIGURE 6 is a plan view of another embodiment of the invention.
  • FIGURES 1 and 2 show the cap with its main surface or deck 1, skirt 2 and an annular sealing extension member 3 protruding downwardly from an intermediate portion of deck 1.
  • Skirt 2 is provided with an inwardly projecting retention bead 4 which is adapted to reach under the external bead or lip 5 of the bottle as shown in FIGURE 3.
  • Notches or grooves 6 are formed in the periphery of deck 1 and extend down into skirt 2 approximately to the level of retention bead 4 so that only relatively thin inner skin 7 remains. When such a skin is completely absent the notches become slots or perforations, but a tight seal with the bottle is nevertheless effected by means of inner seal member 3.
  • the arrow V is intended to indicate the direction of the internal pressure acting on the underside of the cap deck, causing the originally flat surface of the deck to become slightly arched.
  • the retention bead 4 is pressed by the resulting pincer action more tightly into the recess or hollow 8 under bead 5 of the bottle as further shown in schematic FIGURE 4.
  • the notches 6 divide the main deck 1 of the cap into segments 9 and 10 which are connected hinge-like to each other by means of the bridge 11 remaining along the diameter extending between two opposite notches 6.
  • the force acting on segments 9 and 10 in the direction of the arrow presses the retention bead pincer-like by means of skirt 2 in the direction of the horizontal arrows H into recess 8 on the bottle neck.
  • the increased inner pressure caused by liberated carbon dioxide thus increases the retention pressure of the retaining head in a cap formed in accordance with the present invention.
  • the aforementioned hinge 11 has been found to facilitate the removal of the closure as Well as helping to overcome any substantial variations in bottle wall thickness.
  • the central portion of the sealing insert embraced within the inner wall of the hollow ring abuts deck 1 of the cap from below and may be fastened to the latter by fusion. This facilitates subsequent opening of the bottle by hand.
  • the hollow sealing ring 13 at first remains wedged in the mouth of the bottle until the retention bead 4 begins to unlock and only continued lifting of tab 15 will cause the sealing ring or plug to be pulled from the bottle by means of the fused connection 16.
  • lift tab 15 may be in the form of a downwardly open pocket having a sturdy front member serving as the actual lift tab and thin, frangible or tearable side walls or portions 17 through which the lift tab is connected to the skirt and which are torn when the tab is first lifted to open a fresh bottle.
  • cap shown in FIGURES 1 and 2 contains one pair of notches it will be observed that the cap shown in FIGURE 6 contains two pairs of notches or indentations 6.
  • the claimed invention is:
  • a bottle cap of thermoplastic resin adapted for use with a bottle having an external bead near its mouth which cap comprises a deck member, an outer skirt member, an internal sealing member adaptedv to abut the inside of said mouth, and a retention bead projecting radially inwardly from said skirt and adapted to become locked under said external bead of the bottle, said deck and skirt members having in their outer peripheral portending from saidvdeck member downwardly into said skirt member to about the level of said retention bead, said indentations terminating short of the skirt bottom.
  • a resilient thermoplastic cap adapted for use on a bottle'haviug an outwardly projecting bead near its mouth, which cap comprises a substantially flat circular deck member, a cylindrical skirt member attached to said deck member at the periphery thereof, a retention bead projecting from said skirt member radially inwardly, a sealing member adapted to extend into the mouth of a bottle, and a lift tab attached to the cap near the periphery thereof, said deck and skirt members having in their outer peripheral portions at least two groove portions located opposite each other along a diameter of said deck member and extending from said deck member downwardly into said skirt member to approximately the location of the retention bead thereon.
  • a grooved cap according to claim 2 wherein said lift tab is connected to said skirt member by a frangible connecting member which ruptures when the tab is lifted to raise the cap ofl? a bottle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
US440889A 1964-11-12 1965-03-18 Pressure closure Expired - Lifetime US3285451A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG0041998 1964-11-12

Publications (1)

Publication Number Publication Date
US3285451A true US3285451A (en) 1966-11-15

Family

ID=7126822

Family Applications (1)

Application Number Title Priority Date Filing Date
US440889A Expired - Lifetime US3285451A (en) 1964-11-12 1965-03-18 Pressure closure

Country Status (3)

Country Link
US (1) US3285451A (de)
CH (1) CH453116A (de)
NL (1) NL6505277A (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3438529A (en) * 1966-11-28 1969-04-15 Crown Cork & Seal Co Plastic closure with outside ring and inside tube for beer and beverages
US3468447A (en) * 1967-01-30 1969-09-23 Owens Illinois Inc Unitary cam-off closure
US3562456A (en) * 1968-05-07 1971-02-09 Robertshaw Controls Co Pressure responsive switch construction and method of making the same
US4727999A (en) * 1986-06-27 1988-03-01 Sunbeam Plastic Corporation Safety dispensing closure-container package
USD301837S (en) 1985-12-20 1989-06-27 S. C. Johnson & Son, Inc. Bottle or similar article
US4844267A (en) * 1987-05-07 1989-07-04 Franz Pohl Metall- Und Kunststoffwarenfabrik Gmbh Closure cap for infusion and transfusion bottles
US4964513A (en) * 1990-02-20 1990-10-23 Eastman Kodak Company Package
US4964512A (en) * 1990-02-20 1990-10-23 Eastman Kodak Company Recyclable package
US4979351A (en) * 1990-02-20 1990-12-25 Eastman Kodak Company Packaging method
US5031786A (en) * 1990-02-20 1991-07-16 Eastman Kodak Company Tamper-evident package
USD328862S (en) 1990-02-20 1992-08-25 Eastman Kodak Company Film package or similar article
US5697509A (en) * 1994-06-20 1997-12-16 Anchor Hocking Packaging Company Hinged tamper-evidencing closure
US6085922A (en) * 1996-02-28 2000-07-11 Nunc, A/S Container and closure assembly with tactile indication of closure position
US20220227541A1 (en) * 2019-05-31 2022-07-21 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa A cap for a container having a hinge
US20230159239A1 (en) * 2021-11-23 2023-05-25 Anthony Clore Combination beverage bottle opener and cap and method therefor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2156258A (en) * 1938-03-22 1939-05-02 Morgan C Atwood Bottle cap
US2987206A (en) * 1959-03-30 1961-06-06 Grussen Jean Plastic cap for containers
GB895512A (en) * 1959-08-26 1962-05-02 Plastics And Packaging Develop Improvements in sealing closures for bottles and like containers
US3142404A (en) * 1963-09-16 1964-07-28 Container Corp Container closure with removable section

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2156258A (en) * 1938-03-22 1939-05-02 Morgan C Atwood Bottle cap
US2987206A (en) * 1959-03-30 1961-06-06 Grussen Jean Plastic cap for containers
GB895512A (en) * 1959-08-26 1962-05-02 Plastics And Packaging Develop Improvements in sealing closures for bottles and like containers
US3142404A (en) * 1963-09-16 1964-07-28 Container Corp Container closure with removable section

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3438529A (en) * 1966-11-28 1969-04-15 Crown Cork & Seal Co Plastic closure with outside ring and inside tube for beer and beverages
US3468447A (en) * 1967-01-30 1969-09-23 Owens Illinois Inc Unitary cam-off closure
US3562456A (en) * 1968-05-07 1971-02-09 Robertshaw Controls Co Pressure responsive switch construction and method of making the same
USD301837S (en) 1985-12-20 1989-06-27 S. C. Johnson & Son, Inc. Bottle or similar article
US4727999A (en) * 1986-06-27 1988-03-01 Sunbeam Plastic Corporation Safety dispensing closure-container package
US4844267A (en) * 1987-05-07 1989-07-04 Franz Pohl Metall- Und Kunststoffwarenfabrik Gmbh Closure cap for infusion and transfusion bottles
US4979351A (en) * 1990-02-20 1990-12-25 Eastman Kodak Company Packaging method
US4964512A (en) * 1990-02-20 1990-10-23 Eastman Kodak Company Recyclable package
US4964513A (en) * 1990-02-20 1990-10-23 Eastman Kodak Company Package
US5031786A (en) * 1990-02-20 1991-07-16 Eastman Kodak Company Tamper-evident package
USD328862S (en) 1990-02-20 1992-08-25 Eastman Kodak Company Film package or similar article
US5697509A (en) * 1994-06-20 1997-12-16 Anchor Hocking Packaging Company Hinged tamper-evidencing closure
US6085922A (en) * 1996-02-28 2000-07-11 Nunc, A/S Container and closure assembly with tactile indication of closure position
US20220227541A1 (en) * 2019-05-31 2022-07-21 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa A cap for a container having a hinge
US12071277B2 (en) * 2019-05-31 2024-08-27 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Cap for a container having a hinge
US20230159239A1 (en) * 2021-11-23 2023-05-25 Anthony Clore Combination beverage bottle opener and cap and method therefor

Also Published As

Publication number Publication date
CH453116A (de) 1968-05-31
NL6505277A (de) 1966-05-13

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