EP0251259A1 - Méthode de fermeture de récipients à embouchure fileté extérienrement - Google Patents

Méthode de fermeture de récipients à embouchure fileté extérienrement Download PDF

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Publication number
EP0251259A1
EP0251259A1 EP87109262A EP87109262A EP0251259A1 EP 0251259 A1 EP0251259 A1 EP 0251259A1 EP 87109262 A EP87109262 A EP 87109262A EP 87109262 A EP87109262 A EP 87109262A EP 0251259 A1 EP0251259 A1 EP 0251259A1
Authority
EP
European Patent Office
Prior art keywords
cap
container neck
screw
screw cap
cap according
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.)
Withdrawn
Application number
EP87109262A
Other languages
German (de)
English (en)
Inventor
Guenter Spatz
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.)
Closure Systems International Deutschland GmbH
Original Assignee
Alcoa Deutschland GmbH
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 Alcoa Deutschland GmbH filed Critical Alcoa Deutschland GmbH
Publication of EP0251259A1 publication Critical patent/EP0251259A1/fr
Withdrawn legal-status Critical Current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
    • B65D41/02—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
    • 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
    • B65D41/17—Snap-on caps or cap-like covers push-on and twist-off
    • 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
    • B65D41/3442—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container

Definitions

  • the invention relates to a plastic screw cap for containers, in particular bottles, which sits with its inner jacket in a form-fitting manner on an external thread on the container neck.
  • Screw caps for bottles are usually made of metal. They are flanged to the bottle neck, creating a sealed closure of the container and the thread of the screw cap are produced in one operation. These screw caps made of metal have generally proven themselves, but the process for their production is comparatively complex, and the material costs also make it seem advisable to look for alternative plastic closure forms.
  • Plastic screw caps are known as such. They are produced, for example, by injection molding, with a thread being formed on their inner jacket. The forms required for this are comparatively complex. For the first time Ver close a container, the plastic cap is screwed onto it, which is a relatively complex operation. Last but not least, it is problematic to combine a prefabricated screw cap made of plastic with a locking ring.
  • the object of the invention is to provide a plastic screw cap for containers, in particular bottles, preferably with a small neck diameter, which are inexpensive to produce, can be attached in a simple manner when a container is closed for the first time and can be combined with a retaining ring without production problems.
  • a cap is proposed in which a zone of simultaneously elastic and plastic deformability is formed on the inner surface of the cap by local application of material.
  • the cap according to the invention does not have a preformed thread on its inner jacket, but rather the zone mentioned, which is both elastic and plastic deformability.
  • the cap can simply be pressed and / or screwed onto the container neck, which has an external thread in a known manner. After the press-on and / or screwing in, the threads of the external thread engage in the material of the cap, as a result of which thread threads are formed at least in sections on their inner jacket, which work together with the external thread on the container neck when the cap is screwed on.
  • the blank of the cap according to the invention is characterized by a comparatively simple shape, which can be produced in an uncomplicated manner, and the attachment of the cap is also simple in terms of assembly technology. Last but not least, the cap can be easily combined with an integral locking ring.
  • the cap may be advisable to press the cap onto the neck of the container at elevated temperature or to screw it in, for which purpose the cap or the neck of the container or both may be heated.
  • the screw cap After cooling, the screw cap is so hard that it finds sufficient resistance when unscrewing the threads of the container neck and does not jump over the thread.
  • the heating when putting on the cap can be realized practically simply by heating the plunger which drives the cap over the neck of the container. In many cases, liquids are also filled warm and the corresponding containers or bottles are closed while they are still warm. The prevailing temperatures can easily be sufficient to bring about the desired softening of the cap material.
  • the material application to the inner jacket of the cap deformed when the cap is pressed on and / or screwed in can consist of a number of webs which preferably extend in the longitudinal direction of the cap, that is to say parallel to the side wall.
  • the webs are preferably distributed at the same angular distance over the circumference of the cap.
  • the minimum number of bars is three.
  • a larger number of knobs which are preferably staggered both in the longitudinal direction and in the circumferential direction, can also be formed on the inner jacket of the cap, in order to form the desired local material application of elastic and plastic deformability.
  • a sealing element can be provided which engages in the container neck under sealing. This arrangement ensures perfect tightness of the cap.
  • the sealing element can, for example: consist of a cone. Another embodiment is the sealing washer.
  • a securing element can be integrally formed on the cap according to the invention, which undergoes an irreversible change in shape when the cap is opened.
  • it can be a locking ring which is provided with at least one radially inwardly projecting projection and which attaches to the cap with at least one predetermined breaking point.
  • the securing ring is fixed to the container neck when the cap is in place. It tears off at the predetermined breaking point when the cap is first screwed on, which shows the consumer that the bottle or container has already been opened.
  • the cap shown in the figures has essentially a cup shape with a flat bottom 10 and a circular cylindrical jacket attached radially on the outside.
  • a section of the casing which directly adjoins the base 10 forms a screw part 12.
  • the end of the casing which faces away from the base 10 is a securing ring 14 which is connected to the screw part 12 via a predetermined breaking point 16.
  • the entire cap is made in one piece from plastic.
  • a sealing element 18 is formed on the base 10 in a central arrangement and extends in the axial longitudinal direction of the cap.
  • the sealing element 18 is designed as a hollow cone. Its conical outer jacket tapers away from the bottom 10. When the cap is in place (cf. FIG. 5), the sealing cone 18 engages in the opening 20 of a container neck 22, as a result of which the mouth is sealed.
  • Gripping grooves 24 are provided on the outer jacket of the screw part 12 and extend in the longitudinal direction of the cap. Instead of a thread, a number of webs 26 can be seen on the inner jacket of the screw part 12. These are formed in one piece with the cap, extend in the axial longitudinal direction of the cap and are distributed over the circumference of the cap at the same angular distance. As can be seen in FIG. 2, the webs have an essentially rectangular cross section and they merge into the floor 10 with a curvature.
  • the webs 26 represent a zone of elastic and plastic deformability at the same time.
  • the cap according to the invention is simply placed over a container neck 22 which has an external thread 28 (see FIG. 5).
  • the webs 26 are deformed to form thread sections so that the cap can be unscrewed from the container neck 22.
  • the securing ring 14 provided in the extension of the screw part 12 consists of an essentially circular cylindrical apron, on the lower edge of which there are four radially inward projections 30.
  • the projections are equally spaced around the circumference of the cap. They have an essentially triangular cross-section with a radially inwardly directed tip and, moreover, are seen in the circumferential direction, bevelled on both sides 32.
  • FIG forms the axial end of the external thread 28 in the designated exemplary embodiment.
  • the thickness of the jacket of the cap is reduced locally.
  • a groove 36 of shallow depth and some axial length is formed on the inner surface of the cap.
  • the groove 36 is interrupted by axial ribs 38, which come to lie on the inner surface of the cap at the same angular distance and come to lie in the illustrated embodiment in the axial extension of every second web 26.
  • the Rippon 38 have a trapezoidal plan.
  • the wall thickness of the cap reaches its original dimension at the level of the ribs 38; the groove 36 thus extends in the circumferential direction between the ribs 38.
  • the cap is now at the target Break point 16 mechanically cut in the circumferential direction.
  • the cut separates the jacket of the cap in the region of the groove 36.
  • the ribs 38 are not cut through, so that the securing ring 14 ultimately hangs on the ribs 38.
  • the locking ring 14 remains on the shoulder 34 of the container neck 22, and the ribs 38 shear off. The consumer can then see from the torn retaining ring 14 that the container has already been opened.
  • the invention is not limited by the illustrated embodiment of a locking ring. Rather, other securing elements can also be used which experience an irreversible change in shape when the cap is unscrewed for the first time.
  • the zone of simultaneously elastic and plastic deformability on the cap according to the invention does not necessarily have to be provided in the form of webs 26. Rather, other projections, convexities or the like can also be found on the inner jacket of the cap. for example in the form of knobs, the latter preferably being arranged offset both in the axial direction and in the circumferential direction. It is essential that when the cap is rolled over a deformation takes place with the formation of thread sections.
  • the cap according to the invention can be rolled over both at normal temperature and at elevated temperature. In the latter case, use is made of the fact that the plastic properties of the deformation zone mentioned are temperature-dependent.
  • the cap according to the invention can be deformed more easily at elevated temperature, while its material becomes stiffer and stronger when it cools down; this means that shaped threads are permanently retained at elevated temperatures.
  • To heat the cap it is possible, for example, to provide a heating element on the plunger that pushes it over the neck of the container. In the case of hot filling of liquids, in particular beverages, special heating may also be dispensed with, since the neck of the container is already at a sufficient temperature.
  • the cap according to the invention is primarily intended for still liquids that do not contain gas under pressure.
  • a use for containers with liquids filled under pressure, for example carbonated drinks is also conceivable.
  • a preferred field of application is small containers, in particular small portion bottles, the container neck of which has a small diameter, which complicates the attachment of other screw caps.
  • the cap according to the invention therefore does not necessarily have to be able to be screwed on again with a seal, as a result of which less stringent requirements are imposed for its manufacture.
  • Polyethylene and polypropylene are particularly suitable as plastics from which the screw cap according to the invention can be made.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP87109262A 1986-07-02 1987-06-27 Méthode de fermeture de récipients à embouchure fileté extérienrement Withdrawn EP0251259A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3622108 1986-07-02
DE19863622108 DE3622108A1 (de) 1986-07-02 1986-07-02 Aus kunststoff bestehende schraubkappe fuer behaelter

Publications (1)

Publication Number Publication Date
EP0251259A1 true EP0251259A1 (fr) 1988-01-07

Family

ID=6304172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109262A Withdrawn EP0251259A1 (fr) 1986-07-02 1987-06-27 Méthode de fermeture de récipients à embouchure fileté extérienrement

Country Status (2)

Country Link
EP (1) EP0251259A1 (fr)
DE (1) DE3622108A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0295030A2 (fr) * 1987-06-08 1988-12-14 Inco Alloys International, Inc. Alliage nickel-chrome
GB2323593A (en) * 1996-01-11 1998-09-30 Rexam Closures Inc Self-threading closure/container assembly
DE19727723A1 (de) * 1997-06-13 1998-12-24 Richard Herbst Schraubverbindung, Verfahren zum Verschließen eines Behälters sowie Verfahren und Vorrichtung zum Spritzgießen eines Kunststoffkörpers
EP0909717A1 (fr) * 1997-10-17 1999-04-21 Courtaulds Packaging Limited Système de fermeture
DE10322374A1 (de) * 2003-05-13 2004-12-23 Alcoa Deutschland Gmbh Verschluss
WO2010091228A1 (fr) * 2009-02-09 2010-08-12 Protective Industries, Inc. Chapeau d'extrémité fermé pour tuyaux industriels
ITMO20110019A1 (it) * 2011-02-09 2012-08-10 Ativa Contenitore con tappo
ITMO20110020A1 (it) * 2011-02-09 2012-08-10 Ativa Tappo per la chiusura di un contenitore
ITMO20110021A1 (it) * 2011-02-09 2012-08-10 Sacmi Tappo per la chiusura di un contenitore
EP2496489A2 (fr) * 2009-11-05 2012-09-12 Liquid Health Labs Inc. Fermeture bombée universelle pour distribuer une dose
US8490786B2 (en) 2009-02-11 2013-07-23 Liquid Health Labs, Inc. Inverted dome to supply dose
WO2017162559A1 (fr) 2016-03-25 2017-09-28 Unilever N.V. Contenant et couvercle à réponse audible et tactile

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4332544C2 (de) * 1993-09-24 2000-05-31 Vogel & Noot Meisner Metallver Verschlußkappe aus Blech für eine Flasche oder dergleichen sowie Verfahren zum Verschließen einer Flasche oder dergleichen mit einer Verschlußkappe aus Blech
DE102009044643A1 (de) * 2009-11-24 2011-05-26 Kunststofftechnik Waidhofen An Der Thaya Gmbh Verschlusskappe mit Garantiering sowie Spritzgießwerkzeug und Verfahren zu deren Herstellung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2597830A (en) * 1946-11-07 1952-05-20 Metal Closures Ltd Method of applying thermoplastic closures to bottles and other containers
GB1004473A (en) * 1962-01-16 1965-09-15 Metal Box Co Ltd Improvements in or relating to articles made from synthetic thermoplastic material
US4503985A (en) * 1983-10-20 1985-03-12 Owens-Illinois, Inc. Tamper indicating package with large diameter opening

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1432210A1 (de) * 1963-02-14 1969-03-20 Hopf A Metallwerke Kg Gefaess mit einem Verschlussglied in Form einer Kappe oder eines Stopfens
DE2216472A1 (de) * 1972-04-06 1973-10-11 Fritz Heinemann Gewindelose schraubkappe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2597830A (en) * 1946-11-07 1952-05-20 Metal Closures Ltd Method of applying thermoplastic closures to bottles and other containers
GB1004473A (en) * 1962-01-16 1965-09-15 Metal Box Co Ltd Improvements in or relating to articles made from synthetic thermoplastic material
US4503985A (en) * 1983-10-20 1985-03-12 Owens-Illinois, Inc. Tamper indicating package with large diameter opening

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0295030A2 (fr) * 1987-06-08 1988-12-14 Inco Alloys International, Inc. Alliage nickel-chrome
EP0295030B1 (fr) * 1987-06-08 1993-06-23 Inco Alloys International, Inc. Alliage nickel-chrome
GB2323593A (en) * 1996-01-11 1998-09-30 Rexam Closures Inc Self-threading closure/container assembly
GB2323593B (en) * 1996-01-11 2001-05-09 Rexam Closures Inc Press-on screw-off self-tapping closure/container package
DE19727723A1 (de) * 1997-06-13 1998-12-24 Richard Herbst Schraubverbindung, Verfahren zum Verschließen eines Behälters sowie Verfahren und Vorrichtung zum Spritzgießen eines Kunststoffkörpers
EP0909717A1 (fr) * 1997-10-17 1999-04-21 Courtaulds Packaging Limited Système de fermeture
DE10322374A1 (de) * 2003-05-13 2004-12-23 Alcoa Deutschland Gmbh Verschluss
WO2010091228A1 (fr) * 2009-02-09 2010-08-12 Protective Industries, Inc. Chapeau d'extrémité fermé pour tuyaux industriels
US8490786B2 (en) 2009-02-11 2013-07-23 Liquid Health Labs, Inc. Inverted dome to supply dose
EP2496489A4 (fr) * 2009-11-05 2013-04-17 Liquid Health Labs Inc Fermeture bombée universelle pour distribuer une dose
EP2496489A2 (fr) * 2009-11-05 2012-09-12 Liquid Health Labs Inc. Fermeture bombée universelle pour distribuer une dose
US10293993B2 (en) 2009-11-05 2019-05-21 Liquid Health Labs, Inc. Universal domed closure to supply dose
ITMO20110021A1 (it) * 2011-02-09 2012-08-10 Sacmi Tappo per la chiusura di un contenitore
ITMO20110020A1 (it) * 2011-02-09 2012-08-10 Ativa Tappo per la chiusura di un contenitore
ITMO20110019A1 (it) * 2011-02-09 2012-08-10 Ativa Contenitore con tappo
WO2017162559A1 (fr) 2016-03-25 2017-09-28 Unilever N.V. Contenant et couvercle à réponse audible et tactile
US10730672B2 (en) 2016-03-25 2020-08-04 Conopco Inc. Container and lid with audible and tactile feedback
US11261011B2 (en) 2016-03-25 2022-03-01 Conopco Inc. Container and lid with audible and tactile feedback

Also Published As

Publication number Publication date
DE3622108A1 (de) 1988-01-07

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Inventor name: SPATZ, GUENTER,