US3540611A - Sealing disc for crown closures - Google Patents

Sealing disc for crown closures Download PDF

Info

Publication number
US3540611A
US3540611A US741419A US3540611DA US3540611A US 3540611 A US3540611 A US 3540611A US 741419 A US741419 A US 741419A US 3540611D A US3540611D A US 3540611DA US 3540611 A US3540611 A US 3540611A
Authority
US
United States
Prior art keywords
disc
crown
bottle
main body
annular projection
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
US741419A
Other languages
English (en)
Inventor
Isamu Nishikawa
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.)
Mitsubishi Chemical Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3540611A publication Critical patent/US3540611A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

  • a sealing disc for use with a corrugated type cap closure for a bottle is made of nonrigid synthetic resin and has a thin, filmlike flange on its periphery. Projections are formed on the disc near its periphery for closely contacting the edge of the bottle opening and the adjacent surface of the cap closure. Additional annular projections are formed in the central region of the disc for contacting the inner surface of the cap Upon capping the bottle, the filmlike flange is pressed into the internal recesses formed in the corrugated side portions of the cap and assists in sealing the bottle.
  • a sealing disc for bottle cap or crown closures which are made of a synthetic resin.
  • These discs are provided, in the main body thereof, with the following: an inner annular projection or rim adapted to press the inner peripheral wall ofa bottle mouth and located on the upper and lower surfaces of the boundary between the peripheral portion of the bottle top and the central portion placed over the opening of the bottle mouth, an outer annular projection adapted to press the external peripheral wall of the bottle mouth on upper andlower surfaces of said periphery, annular grooves formed symmetrically on upper and lower surfaces, respectively, on a portion where the base portion of the outer annular projection and the peripheral portion contact, inclined surfaces slopiiig down outwardly formed on upper and lower surfaces of the outer annular projection, and the inside diameter of the main portion of up to the neck portion of the outer annular projectionbeing made substantially equal to the inside diameter of the cap or crown closure, whereby the outer annular projection is
  • the sealing disc for a crown closure according to the present invention is excellent in its sealing effect due to a construction that includes a thin, filmlike flange or projection extending laterally from the periphery of the circular main body which is pressed into the recesses formed on the inside of the corrugated wall of the crown skirt so that no gap is formed therebetween, and concentric annular projections located in the central portion of the disc and arranged to contact the inner surface of the top plate of the crown closure for preventing the deformation of the sealing disc due to the pressure inside the bottle.
  • the object of the present invention is to provide a sealing disc for a crown closure which can be fitted firmly into the cap body without the fear of being detached, the crown cap, fitted with the disc according to the present invention, being mounted 'on the mouth of a bottle, the disc in the crown cap will not be deformed, during the use, by the pressure within the bottle, thus the sealing effect thereofis much improved.
  • the thin, filmlike flange in mounting the sealing disc in the metal crown cap, is made to contact the inside of the corrugated skirt portion of the crown body by bending at the base portion of the filmlike flange, and the main body ofthe disc, which is made ofsynthetic resin, according to the present invention is fitted closely inside the crown cap by its elasticity.
  • the main body of the disc for the crown cap is maintained flat because the top portions of the concentric projections press against the top plate of the crown and this, maintains the exact position of the disc inside the crown body.
  • the filmlike flange portion is pressed into the interior recesses in the corrugated wall formed on the skirt portion of the crown body, and this engagement maintains the main body of the disc firmly and'immovably within the crown body.
  • the top portions of the concentric annular projections in the central portion of the disc press against the inner surface of the top plate of the crown body and support the central portion securely inside the inner annular projection, so that any deformation of the central portion itself due to the pressure inside the bottle can be prevented, and no gap between the annular projection and the inner shoulder portion of the bottle mouth is produced, and thus extremely excellent sealing can be maintained.
  • the mechanical strength at the central portion of the disc is increased by the provision of the concentric annular projections, and during the use of I the crown closure fitted with the disc of the present invention on the bottle mouth, the disc of the crown cap shows a favorable resistance against the pressure produced inside the bottle, and no deformation such as extension will ever be produced.
  • the radial tension of the central portion is essentially supported by the concentric annular projections, the tension being transmitted uniformly to the annular projection, the deformation of the annular projection can be checked favorably and the sealing effect is maintained positively.
  • a disc of the crown closure of the present invention gives a favorable result although a nonrigid synthetic resin material is used in molding-the disc. That is, in the cooling and setting course during the molding of the disc, the thin portions of the disc cool down and set previous to the thick, projecting portions of the disc which are still in a molten state, and the deformation of said thin portions of the disc liable to be produced by their quick cooling is prevented by the thick portion where the heat capacity is greater, thus an appropriate plastic disc having no internal strain, and therefore no twisting nor flexure is formed.
  • FIG. 1 is a plan view of the disc for a crown closure according to the present invention
  • FIG. 2 is a cross-sectional view along the line [1-1] of FIG. 1;
  • FIG. 3 is a cross-sectional view of the disc according to the present invention showing the statein which the disc is inserted in a crown closure;
  • FIG. 4 is a cross-sectional view of the disc showing the crown closure when the latter is capped on the mouth ofa bottle.
  • a circular disc made of a nonrigid synthetic resin comprises a rim portion 2, 2a and an annular projection 3, 3a each projecting from an opposite side of the main body 1, a thin, filmlike flange portion 5 extends laterally in a horizontal plane from; and circumferentially about the central portion of the vertical peripheral wall 4 of the main body 1.
  • a pair of concentric annular projections 7, 7a, 8, Sa extend from each face of the central portion 6 of the disc located inwardly from the annular projection 3, 3a and an annular groove 9, 9a is provided on each surface of the base portion of the rim 2, 2a adjacent the annular projection 3, 3a.
  • annular rim portion 2, 2a, the annular projection 3, 3a, the concentric annular projections 7, 7a, 8, 8a and the annular groove 9, 9a are all formed symmetrically on the upper and lower surfaces of the main body 1.
  • the rim portion 2, 2a is formed corresponding to the'outer shoulder portion 10a of the mouth 10 of the bottle, see FIG..4, and the annular-projection 3, 3a is formed corresponding to the inner shoulder portion 10b of the bottle mouth 10, and inclined faces 3,,g sloping towards the rim 2, 2a are formed from the top portions of the annular projection 3, 3a.
  • the thin, filmlike flange is made to contact the inner and upper portions of the corrugated wall formed on the skirt portion of the crown body 11, and is formed so as to be pressed into the recessed portions Ila inside the corrugated wall.
  • top portions of the concentric annular projections 7, 7a, 8, 8a and the annular projection 3, 3a are each made to have a height which when the disc is inserted in the crown cap, each of the top portions contacts the top plate 11b of the cap body 11 as shown in FIG. 3.
  • a preferable shape and dimensions for the .disc for a crown closure according to the present invention are as follows: when the diameter 1 (see FIG. 2) of the outer peripheral wall 4 of the main body 1 is 27 mm., it is proper to for the thickness d of the main body 1 to be 0.2 to 1 mm., the thickness d of the flange 5 to be one-half to one-third of the thickness d, of the main body 1, the width w of the flange 5 to be one-fiftieth to one-tenth of the diameter of outer peripheral wall portion 4 of the main body 1, the height h, from the flat surface of the central portion 6 of the main body 1 to the top portion of the annular projection 3, 3a to be 0.5 to 1 mm., the height h from the flat surface at the central portion of the main body 1 to the top of the concentric projections 7, 7a, 8, 8a to be 0.2 to I mm., and the width W of each of the concentric projections to be 0.4 to 2 mm., respectively.
  • the disc for a crown closure being thus constructed, in inserting the disc into the crown body 11, the filmlike flange 5 bends itself at the base portion thereof so as to be pressed into the recessed portions Ila of the corrugated wall formed on the skirt portion of the crown body 11, and the main body of the disc due to its elasticity is inserted into engagement with the crown body 11.
  • the filmlike flange portion 5 is pressed and made to contact the upper portion of the corrugated wall formed in the skirt portion ofthe crown body 11, and the parts thereof are pressed into the recesses 11a of the corrugated wall, so that the main body 1 of the disc is held firmly and immovably within the crown cap 11, and at the same time since the flange portion 5 is deformed within the recesses 11a, and no gap is allowed to form therebetween.
  • the grooves 9, 9a assist the deformation of the rim portion 2, 2a and the annular projections 3, 3a to fit closely on the outer shoulder 10a and the inner shoulder 10b of the bottle mouth
  • the (C for a crown closure according to the present invention may be fitted closely inside the crown body without any fear of it'falling out, and when the crown closure fitted with the disc is capped on the bottle mouth, no gap is formed between the edge of the bottle mouth and the crown body, a close and complete sealing effect is maintained, and together therewith, an extremely large resistance against pressure may also be formed.
  • a sealing disc adapted to be inserted into a crown closure for sealing the mouth of a bottle, the crown closure having a corrugated skirt portion arranged to extend downwardly about the periphery of the bottle at its mouth, the sealing disc being formed of a nonrigid synthetic resin and comprising a flat circular main body having a first surface and an oppositely facing second surface with the first and second surfaces being symmetrically shaped, a rim portion extending continuously about the circumferential periphery of said main body and extending generally perpendicularly outwardly from the first and second surfaces of said main body, said rim having a radially outwardly directed circumferentially extending peripheral surface extending transversely of the plane of said main body, a filmlike flange extending radially outwardly from the peripheral surface of said rim in generally coplanar relationship with said main body, an outer annular projection extending generally perpendicularly outwardly from the first and second surfaces of said main body and being spaced inwardly from said rim portion thereon,
  • a sealing disc as set forth in claim I, wherein said filmlike flange having a thickness about one-third to one-half the thickness of said main body.
  • a sealing disc as set forth in claim 2, wherein said flange having a dimension in the radial direction of between one-fiftieth to one-tenth of the diameter of said main body portion.
  • a sealing disc as set forth in claim 1, wherein the dimension of said inner and outer annular projections extending from the first and second surfaces of said main body being substantially the same and being greater than the dimension of said rim portion from said first and second surfaces of said main body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
US741419A 1967-07-10 1968-07-01 Sealing disc for crown closures Expired - Lifetime US3540611A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5949967 1967-07-10

Publications (1)

Publication Number Publication Date
US3540611A true US3540611A (en) 1970-11-17

Family

ID=13115024

Family Applications (1)

Application Number Title Priority Date Filing Date
US741419A Expired - Lifetime US3540611A (en) 1967-07-10 1968-07-01 Sealing disc for crown closures

Country Status (6)

Country Link
US (1) US3540611A (enrdf_load_stackoverflow)
DE (1) DE1782024C3 (enrdf_load_stackoverflow)
DK (1) DK128103B (enrdf_load_stackoverflow)
FR (1) FR1571958A (enrdf_load_stackoverflow)
GB (1) GB1228653A (enrdf_load_stackoverflow)
NL (1) NL6809775A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100264109A1 (en) * 2006-12-20 2010-10-21 Fabricas Monterrey, S.A.DE C.V. Crown-type metal cap with projection indicating pressure or vacuum, and method for making same
US20110253666A1 (en) * 2010-03-19 2011-10-20 Keller Timothy P Liner-stretching bottle closure body recess and reinforcing insert
US20150034586A1 (en) * 2006-01-14 2015-02-05 World Bottling Cap Llc Reduced gauge bottle cap
US9533800B2 (en) 2014-03-28 2017-01-03 World Bottling Cap, LLC Bottle crown with opener assembly
US9592936B2 (en) 2006-01-14 2017-03-14 World Bottling Cap, LLC Bottle crown with opener assembly
KR20170034402A (ko) * 2014-07-22 2017-03-28 어드밴스드 테크놀러지 머티리얼즈, 인코포레이티드 연성 재료를 갖는 성형 플루오로중합체 브레이크 실
US11548683B2 (en) 2014-03-28 2023-01-10 World Bottling Cap, LLC Bottle crown with opener assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6202870B1 (en) 1999-03-29 2001-03-20 Woodrow W. Pearce Venting cap

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150034586A1 (en) * 2006-01-14 2015-02-05 World Bottling Cap Llc Reduced gauge bottle cap
US9592936B2 (en) 2006-01-14 2017-03-14 World Bottling Cap, LLC Bottle crown with opener assembly
US11104492B2 (en) * 2006-01-14 2021-08-31 World Bottling Cap, LLC Bottle crown with opener assembly
US20100264109A1 (en) * 2006-12-20 2010-10-21 Fabricas Monterrey, S.A.DE C.V. Crown-type metal cap with projection indicating pressure or vacuum, and method for making same
US20110253666A1 (en) * 2010-03-19 2011-10-20 Keller Timothy P Liner-stretching bottle closure body recess and reinforcing insert
US9533800B2 (en) 2014-03-28 2017-01-03 World Bottling Cap, LLC Bottle crown with opener assembly
US11046479B2 (en) 2014-03-28 2021-06-29 World Bottling Cap Llc Non-metal and hybrid bottle crowns with opener assembly
US11548683B2 (en) 2014-03-28 2023-01-10 World Bottling Cap, LLC Bottle crown with opener assembly
KR20170034402A (ko) * 2014-07-22 2017-03-28 어드밴스드 테크놀러지 머티리얼즈, 인코포레이티드 연성 재료를 갖는 성형 플루오로중합체 브레이크 실
KR101903300B1 (ko) 2014-07-22 2018-10-01 어드밴스드 테크놀러지 머티리얼즈, 인코포레이티드 연성 재료를 갖는 성형 플루오로중합체 브레이크 실

Also Published As

Publication number Publication date
DK128103B (da) 1974-03-04
FR1571958A (enrdf_load_stackoverflow) 1969-06-20
NL6809775A (enrdf_load_stackoverflow) 1969-01-14
DE1782024C3 (de) 1975-06-05
GB1228653A (enrdf_load_stackoverflow) 1971-04-15
DE1782024B2 (de) 1974-10-17
DE1782024A1 (de) 1972-03-16

Similar Documents

Publication Publication Date Title
US4143785A (en) Plastic vacuum sealing cap
US3583591A (en) Bottle cap
US3033407A (en) Bottle closures
US3286866A (en) Plastic cap
US3463340A (en) Screw cap with locking means
EP0140655A2 (en) One-piece plastics closure
US3802590A (en) Linerless container closure
ES281745U (es) Caperuza de cierre.
US3844439A (en) Linerless closures
IE40799B1 (en) Improvements in or relating to fluid-tight,captive,tamper-proof plastic closures,and mould for manufactiring same
US3540611A (en) Sealing disc for crown closures
GB1483799A (en) Closure cap and sealed package
US3247992A (en) Resealable bottle closure
US3216600A (en) Container and closure cap combination
US3247994A (en) Plastic caps for use as closure for containers
US4429802A (en) Linerless closure cap
US2327454A (en) Padless crown cap
US3595418A (en) Closures for containers
US3828963A (en) Recessed crown cap
US2463701A (en) Container and closure
JPS60148462A (ja) 蓋付きの容器
US3655084A (en) Container with pressure retaining sealing elements
US2041403A (en) Closure cap for receptacles
GB1089080A (en) Improvements in or relating to closures for containers
GB1205887A (en) Improvements in closures for necked containers