US3857509A - Bottle - Google Patents

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Publication number
US3857509A
US3857509A US00298656A US29865672A US3857509A US 3857509 A US3857509 A US 3857509A US 00298656 A US00298656 A US 00298656A US 29865672 A US29865672 A US 29865672A US 3857509 A US3857509 A US 3857509A
Authority
US
United States
Prior art keywords
neck
cap
sealing surface
container
base
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
US00298656A
Other languages
English (en)
Inventor
M Baldwin
G Miles
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.)
Colgate Palmolive Co
Original Assignee
Colgate Palmolive Co
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 Colgate Palmolive Co filed Critical Colgate Palmolive Co
Priority to US00298656A priority Critical patent/US3857509A/en
Priority to CA181,659A priority patent/CA1024938A/en
Priority to FR7336140A priority patent/FR2203744B1/fr
Application granted granted Critical
Publication of US3857509A publication Critical patent/US3857509A/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
    • B65D11/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material
    • B65D11/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material of curved cross-section
    • B65D11/04—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
    • 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
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck

Definitions

  • ABSTRACT A container having a protruding, threaded neck por- [56] References Clted tion and a screw on cap is disclosed.
  • the container in- UNITED STATES PATENTS cludes a pair of mating seating surfaces on the base of 774,014 11/1904 Wilson 215/44 the cap nd neck and sealing surfaces on the top of 1,682,403 8/1928 Murray 220/4 B the neck and on the inside surface of the top of the ,152 9/1932 Sheaffer 215/43 R cap.
  • the sealing surfaces are adapted to engage in reg ig l sponse to torque applied to the cap after said seating ry en er 1.
  • 4 3,010,596 11/1961 Williams 215/43 Surfaces have been engaged 3,027,034 3/1962 Christian 215/43 8 Claims, 4 Drawing Figures f A 16 //,1// yam c I k I I 11 l l I 13 1O PAIENTEDBEBB 1 IBM 3'. 857. 509
  • the present invention pertains to containers for the packaging of liquids such as light and heavy duty detergents, shampoos, etc. More specifically, the invention provides a container of the thermoformed type having an improved leak resistant threaded dispensing neck and screw-on cap.
  • bottles are characterized by a top and bottom portion that are separately made and joined together by suitable means such as a circumferencially welded seam.
  • Bottles of this type have been used to package a variety of products, including powdered cleansers, yogurt, milk and juices. In recent years, their use has substantially increased because of the attractive economics involved in employing such containers.
  • Thermoformed containers are fabricated from two separate thermoplastic sheets of required thickness; each sheet forming, respectively the upper and lower portions of the container. Each sheet is heated and forced into the mold of a high speed thermoforming machine to produce the bottom and top halves of the container. The thermoformed parts coming out of the two forming machines, still attached to the sheet of thermoplastic material, enter two trim presses that automatically trim the sheets. The top and bottom halves are then dropped onto conveyors and supplied to appropriate means for joining the two halves together.
  • Thermoformed halves can be joined together by various means including spin-welding, heat-sealing, ultrasonic-sealing, solvent-sealing, adhesive-sealing and any other suitable process. In accordance with the invention, it is preferred to utilize spinwelding. When the spin-welding process is used, the top and bottom halves are supplied to a spin-welding apparatus after they are thermoformed.
  • the spin-welding is either a or -head rotary inside surface of the cap and the top annular surface of the neck. To insure that an adequate seal is made at this point, a space is left between the base of the neck and the bottom of the cap, i.e., the length of the neck is greater than the inside depth of the cap. Accordingly, when the cap is screwed on there is nothing to prevent the top annular surface of the neck from seating against unit. Machine size is dependent on volume requirements.
  • the top and bottom halves are fed into holding mandrels by starwheels and restricted from rotating within the mandrels either by vacuum or by mechanical means.
  • the two halves Seated within the mandrels, the two halves are held apart from each other, with one half stationary while the other is rotated and brought up to welding speed, typically from 2,000 to 5,000 RPM.
  • the mandrel drive is then disengaged and the two halves are brought to--
  • a further advantage of the invention is the provision of a plurality of seals between the threaded neck of the bottle and the screw-on cap to insure leak-proof performance.
  • a threaded nozzle neck having an annular shoulder at its base and a length less than the inside depth of the screw-on cap to be used in combination therewith.
  • the shoulder has an upper seating surface designed to form a seal with the lower annular surface of the screw-on cap.
  • the threaded neck as measured from the seating surface of the shoulder to the annular surface at its top, is shorter than the inside depth of the screw-on cap as measured from the annular seating surface at its base to the inside surface of the cap top.
  • the bottom surface of the cap first seats against the annular surface of the neck shoulder. Further torque on the cap after it contacts the shoulder fully seats the base of the cap on the neck shoulder and creates longitudinal forces along the neck. Because of the thin wall thickness and deformable character of the neck, the applied longitudinal forces result in elongation of the neck and seating of the annular surface of the top of the nozzle neck against the top inside surface of the screw-on cap. Accordingly, the invention provides a dual sealing cap providing improved resistance to leakage for bottles having relatively thin nozzle necks and containing liquid products.
  • thermoformed bottle having a screw-on cap suitable for packaging liquid products such as light and heavy duty liquid detergents, shampoos, etc.
  • a screw-on cap thermoformed container for packaging liquid products of this type has not been generally accepted because of the leakage problem present when a conventional screw-on cap is used. in conjunction with a thin walled deformable nozzle neck.
  • FIG. 1 is a perspective view of a container according to the invention.
  • FIGS. 1 and 2 show a thermoformed spin-welded container 1 having an integral protruding threaded neck portion 2 adapted to accept screw-on cap 3.
  • the container 1 is typically generally cylindrical in shap consisting of thermoformed upper and lower portions 4 and 5. Portions 4 and 5 are joined together by a spin-welded girth seam 6 to form a complete container.
  • the bottom portion 5 of the container 1 includes a frusto-conical wall 7 of circular cross section and a bottom wall 8.
  • the upper portion of container 1 includes a side wall 9 of circular cross section, threaded neck 2 and a sloping connecting portion 10 joining side wall 9 and neck 2.
  • container 1 is fabricated from thermoplastic sheet material such as polyethylene, polypropylene, polyvinyl chloride, or any other suitable thermoplastic material, by the aforementioned thermoforming spin-welding techniques.
  • Threaded neck 2 is usually somewhat thinner than the side walls 7 and 9 as a result of the thermoforming process and is normally quite deformable, having a wall thickness from about 0.01 to about 0.05 inch, typically from about 0.015 to about 0.025 inch. Because of its deformable character and thin wall, neck 2 is capable of elongating a few hundreths of an inch when subjected to longitudinal forces generated by applying torque to partially seated cap 3 in accordance with the invention.
  • the neck 2 is provided with threads having a bellows configuration. The bellows threads function to permit uniform elongation upon the application of torque to the partially seated cap 3 and provide a uniform wall thickness for neck 2.
  • FIG. 3 the portion of a bottle 1 having a hollow nozzle neck 2 and a continuous helical thread 11 disposed around its periphery and adapted to engage corresponding threads 12 disposed around the interior circumference of screw-on cap 3 permitting cap 3 to be screwed onto neck 2 is shown.
  • Cap 3 includes a closed top end 15 having a seating surface 16 adapted to seat against the annular seating flange 17 at the top of the neck 2 as shown in FIG. 4, and an annular seating surface 18 at its base. Cap 3 can also include an annular plug 19 extending from the top end 15 of the cap into the hollow nozzle neck 2 and contacting the inside periphery of seating flange 17.
  • the normal length L. of the nozzle neck 2 is less, by the distance L than the depth of the screw cap, L
  • FIG. 3 shows the screw cap 3 screwed onto neck 2 to the point where the surfaces 14 and 18 make contact.
  • FIG. 4 shows the cap 3 fully seated with the nozzle neck 2 elongated an amount equal the distance L by further torque applied to cap 3 after it contacts surface 14 of shoulder 13, so that seating surfaces 16 and 17 are joined under compressive forces.
  • the elongation of the neck during seating of the cap results in a resiliant lock between the threads of the neck and cap.
  • the aforementioned resiliant lock which is similar to a lockwasher effect, results in a removal torque less than the applicative torque for ease of opening the container while providing protection against the cap loosening when jarred during shipping in the usual corrugated cartons.
  • the removal torque remains constant during shipping and warehousing conditions.
  • the invention provides a combination threaded container neck and screw-on cap that is particularly advantageous for use with containers having thin, deformable walls.
  • the dimensional relationship between the neck and cap is such that a substantially leak-proof seal is obtained.
  • the invention provides a seal between the base of the cap and the neck and a secondary seal, formed by elongation of the nozzle neck in response to torque applied to the cap after the base sealing surfaces are in contact, between the top of the cap and neck.
  • a container comprising a. a body portion,
  • said neck portion having a first sealing surface disposed on its top surface and a threaded exterior surface
  • said shoulder being adjacent said body portion and having a first seating surface lying in a plane transverse to the axis of said neck portion
  • said neck portion having a predetermined height measured from said first seating surface to said first sealing surface
  • a cap member having a threaded inner surface adapted to engage the threaded exterior surface of said neck portion
  • said cap member having an open base end, a closed top end, and a second sealing surface, adapted to engage said first sealing surface, disposed on the inner surface of said closed top end,
  • said base end defining an annular second seating surface corresponding to said first seating surface
  • said cap member having a predetermined depth, measured from said second seating surface to said second sealing surface
  • Container according to claim 1 wherein said body portion comprises a thermoplastic material.
  • Container according to claim 3 wherein said nozzle neck is from about 0.01 and 0.05 inches in thickness.
  • a container having a threaded nozzle dispensing neck, a screw-on cap, an annular shoulder adjacent the base of said neck for engaging the base of said cap, a first sealing surface disposed in the inner top surface of said cap, and a second sealing surface, adapted to engage said first sealing surface, disposed on the top surface of said neck, the improvement wherein the depth of said cap measured from its base to said first sealing inch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
US00298656A 1972-10-18 1972-10-18 Bottle Expired - Lifetime US3857509A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US00298656A US3857509A (en) 1972-10-18 1972-10-18 Bottle
CA181,659A CA1024938A (en) 1972-10-18 1973-09-21 Bottle
FR7336140A FR2203744B1 (enrdf_load_stackoverflow) 1972-10-18 1973-10-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00298656A US3857509A (en) 1972-10-18 1972-10-18 Bottle

Publications (1)

Publication Number Publication Date
US3857509A true US3857509A (en) 1974-12-31

Family

ID=23151459

Family Applications (1)

Application Number Title Priority Date Filing Date
US00298656A Expired - Lifetime US3857509A (en) 1972-10-18 1972-10-18 Bottle

Country Status (3)

Country Link
US (1) US3857509A (enrdf_load_stackoverflow)
CA (1) CA1024938A (enrdf_load_stackoverflow)
FR (1) FR2203744B1 (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415095A (en) * 1982-01-19 1983-11-15 Schweigert Lothar L Lid and seal for jar
US4616759A (en) * 1985-11-08 1986-10-14 Darrell Mahler Liquid-dispensing container assembly
US4738183A (en) * 1986-03-28 1988-04-19 Kern Instrument & Tooling, Inc. Clam shell construction ammunition magazine
WO2007010174A1 (en) * 2005-07-21 2007-01-25 Reckitt Benckiser Healthcare (Uk) Limited Packaging with sealing lid and method for filling the package
US20080054497A1 (en) * 2006-08-31 2008-03-06 Medex Cardio-Pulmonary, Inc.. Vented cap humidification system
US20090283494A1 (en) * 2008-05-14 2009-11-19 Tablecraft Products Company Easy clean refillable bottle and dispensing cap
CN106626787A (zh) * 2015-10-30 2017-05-10 佳能株式会社 液体储存瓶、液体储存瓶包装件及其制造方法
US20180132673A1 (en) * 2016-11-15 2018-05-17 Colgate-Palmolive Company Dispenser

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US774014A (en) * 1904-05-26 1904-11-01 Catharine Cramer Closure for jars or similar vessels.
US1682403A (en) * 1920-11-22 1928-08-28 Thomas E Murray Barrel
US1876152A (en) * 1929-08-03 1932-09-06 W A Sheaffer Pen Co Container
US2372156A (en) * 1942-05-21 1945-03-20 Anchor Hocking Glass Corp Glass screw cap
FR1101388A (fr) * 1954-05-26 1955-10-05 Javel Grosjean Dispositif d'obturation de flacon
US2732089A (en) * 1952-06-11 1956-01-24 Frydlender
DE968767C (de) * 1952-05-03 1958-03-27 Metallwerke Adolf Hopf A G Dichtungseinlage
US3010596A (en) * 1959-03-19 1961-11-28 William E Williams Closure seal for containers
US3027034A (en) * 1958-02-05 1962-03-27 Francis K Christian Container cap
DE1129849B (de) * 1953-05-18 1962-05-17 Metallwerke Adolf Hopf K G Schraubkappenverschluss mit Dichtungsscheibe
FR1327731A (fr) * 1961-10-05 1963-05-24 Ile D Inv S Soc Civ Bouchon obturateur
US3339773A (en) * 1966-05-11 1967-09-05 Stull Engraving Company Screw closure
US3342365A (en) * 1966-09-23 1967-09-19 Haveg Industries Inc Welded containers
US3741424A (en) * 1971-09-27 1973-06-26 Eyelet Specialty Co Bottle closure

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US774014A (en) * 1904-05-26 1904-11-01 Catharine Cramer Closure for jars or similar vessels.
US1682403A (en) * 1920-11-22 1928-08-28 Thomas E Murray Barrel
US1876152A (en) * 1929-08-03 1932-09-06 W A Sheaffer Pen Co Container
US2372156A (en) * 1942-05-21 1945-03-20 Anchor Hocking Glass Corp Glass screw cap
DE968767C (de) * 1952-05-03 1958-03-27 Metallwerke Adolf Hopf A G Dichtungseinlage
US2732089A (en) * 1952-06-11 1956-01-24 Frydlender
DE1129849B (de) * 1953-05-18 1962-05-17 Metallwerke Adolf Hopf K G Schraubkappenverschluss mit Dichtungsscheibe
FR1101388A (fr) * 1954-05-26 1955-10-05 Javel Grosjean Dispositif d'obturation de flacon
US3027034A (en) * 1958-02-05 1962-03-27 Francis K Christian Container cap
US3010596A (en) * 1959-03-19 1961-11-28 William E Williams Closure seal for containers
FR1327731A (fr) * 1961-10-05 1963-05-24 Ile D Inv S Soc Civ Bouchon obturateur
US3339773A (en) * 1966-05-11 1967-09-05 Stull Engraving Company Screw closure
US3342365A (en) * 1966-09-23 1967-09-19 Haveg Industries Inc Welded containers
US3741424A (en) * 1971-09-27 1973-06-26 Eyelet Specialty Co Bottle closure

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415095A (en) * 1982-01-19 1983-11-15 Schweigert Lothar L Lid and seal for jar
US4616759A (en) * 1985-11-08 1986-10-14 Darrell Mahler Liquid-dispensing container assembly
US4738183A (en) * 1986-03-28 1988-04-19 Kern Instrument & Tooling, Inc. Clam shell construction ammunition magazine
CN101228074B (zh) * 2005-07-21 2010-05-12 雷克特本克斯尔保健(英国)有限公司 具有密封盖的包装和填充该包装的方法
WO2007010174A1 (en) * 2005-07-21 2007-01-25 Reckitt Benckiser Healthcare (Uk) Limited Packaging with sealing lid and method for filling the package
US20100147864A1 (en) * 2005-07-21 2010-06-17 Reckitt Benckiser Healthcare (Uk) Limited Packaging with sealing lid and methods for filling the package
JP4922297B2 (ja) * 2005-07-21 2012-04-25 レキット ベンキサー ヘルスケア （ユーケイ） リミテッド 密封蓋によるパッケージ及びパッケージを充填する方法
KR101209673B1 (ko) 2005-07-21 2012-12-07 레킷트 벵키저 헬스케어(유케이)리미티드 밀폐 뚜껑을 구비한 용기 및 용기를 충전하는 방법
US20080054497A1 (en) * 2006-08-31 2008-03-06 Medex Cardio-Pulmonary, Inc.. Vented cap humidification system
US20090283494A1 (en) * 2008-05-14 2009-11-19 Tablecraft Products Company Easy clean refillable bottle and dispensing cap
CN106626787A (zh) * 2015-10-30 2017-05-10 佳能株式会社 液体储存瓶、液体储存瓶包装件及其制造方法
US9908338B2 (en) * 2015-10-30 2018-03-06 Canon Kabushiki Kaisha Liquid storage bottle, liquid storage bottle package, and method of manufacturing liquid storage bottle package
CN106626787B (zh) * 2015-10-30 2019-04-05 佳能株式会社 液体储存瓶、液体储存瓶包装件及其制造方法
US20180132673A1 (en) * 2016-11-15 2018-05-17 Colgate-Palmolive Company Dispenser

Also Published As

Publication number Publication date
FR2203744B1 (enrdf_load_stackoverflow) 1978-02-17
CA1024938A (en) 1978-01-24
FR2203744A1 (enrdf_load_stackoverflow) 1974-05-17

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