EP0085741A1 - Threaded cap made of plastics for bottles - Google Patents

Threaded cap made of plastics for bottles Download PDF

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Publication number
EP0085741A1
EP0085741A1 EP82107621A EP82107621A EP0085741A1 EP 0085741 A1 EP0085741 A1 EP 0085741A1 EP 82107621 A EP82107621 A EP 82107621A EP 82107621 A EP82107621 A EP 82107621A EP 0085741 A1 EP0085741 A1 EP 0085741A1
Authority
EP
European Patent Office
Prior art keywords
screw cap
thread
interruption
point
bottle
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.)
Granted
Application number
EP82107621A
Other languages
German (de)
French (fr)
Other versions
EP0085741B1 (en
Inventor
Josef Kern
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.)
Heinrich Josef Winter Kunststoffverarbeitung und Werkzeugbau GmbH
Original Assignee
Heinrich Josef Winter Kunststoffverarbeitung und Werkzeugbau 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 Heinrich Josef Winter Kunststoffverarbeitung und Werkzeugbau GmbH filed Critical Heinrich Josef Winter Kunststoffverarbeitung und Werkzeugbau GmbH
Priority to AT82107621T priority Critical patent/ATE16265T1/en
Publication of EP0085741A1 publication Critical patent/EP0085741A1/en
Application granted granted Critical
Publication of EP0085741B1 publication Critical patent/EP0085741B1/en
Expired 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
    • 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

  • the invention relates to a plastic screw cap for bottles.
  • the invention is based on the object to remedy this situation and to design a screw cap of the type mentioned in such a way that it can easily be screwed on properly by the machine.
  • the thread (raised part) of the screw cap has at least one interruption dividing the thread before reaching an angle of 360 ° calculated from the thread start (lower thread end).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Das Gewinde (10) einer Kunststoff-Schraubkappe für Flaschen hat vor Erreichen eines Winkels von 360° gerechnet vom Gewindeanfang (12) mindestens eine das Gewinde unterteilende Unterbrechung (14) so daß, wenn die Schraubkappe bei ungünstiger Drehlage schräg auf das Flaschengewinde zu liegen kommt, die Kunststoff-Schraubkappe über die erste Windung des Flaschengewin des überschnappen kann, um eine gerade Lage einzunehmen.The thread (10) of a plastic screw cap for bottles has at least one interruption (14) dividing the thread before reaching an angle of 360 ° calculated from the beginning of the thread (12), so that when the screw cap comes to lie obliquely on the bottle thread in an unfavorable rotational position , the plastic screw cap can snap over the first turn of the bottle thread to take up a straight position.

Description

Die Erfindung betrifft eine Kunststoff-Schraubkappe für Flaschen.The invention relates to a plastic screw cap for bottles.

Bei den bekannten Kunststoff-Schraubkappen für Flaschen besteht die Gefahr, dass beim Aufschrauben der Schraubkappen auf die Flaschen mittels eines Automaten die Schraubkappe auf der Flaschenmündung bzw. auf dem Flaschengewinde schräg zu liegen kommt. Dies ist der Fall, wenn der Gewindeanfang (unteres Gewindeende) der Schraubkappe in einem Bereich von 0 bis ca. 180° des Flaschengewindes zu liegen kommt. Dann nämlich kommt das Schraubkappengewinde bei anfänglich in Bezug auf die Flasche ausgerichteter Schraubkappe über weniger als 180° in Anlage mit dem Flaschengewinde, so dass es mit seinem grösseren Teil frei über dem Flaschengewinde steht und die Schraubkappe beim Aufsetzen, was ja mit einem gewissen Druck erfolgen muss, kippt bzw. verkantet. Eine auf diese Weise verkantete Schraubkappe wird vom Automaten in dieser verkanteten Stellung beim Aufdrehen festgehalten, so dass eine ordnungsgemässe Schraubverbindung nicht zustande kommt.In the known plastic screw caps for bottles, there is a risk that when the screw caps are screwed onto the bottles by means of an automatic machine, the screw cap will lie obliquely on the bottle mouth or on the bottle thread. This is the case if the thread start (lower thread end) of the screw cap is in a range from 0 to approx. 180 ° of the bottle thread. Then the screw cap thread comes into contact with the bottle thread with the screw cap initially aligned with respect to the bottle over less than 180 °, so that the larger part of it comes over freely the bottle thread stands and the screw cap tilts or jams when put on, which must be done with a certain pressure. A screw cap that is tilted in this way is held by the machine in this tilted position when it is unscrewed, so that a correct screw connection does not come about.

Der Erfindung liegt nun die Aufgabe zugrunde, hier Abhilfe zu schaffen und eine Schraubkappe der angesprochenen Art derart auszubilden, dass sie vom Automaten ohne weiteres ordnungsgemäss aufgeschraubt werden kann.The invention is based on the object to remedy this situation and to design a screw cap of the type mentioned in such a way that it can easily be screwed on properly by the machine.

Diese Aufgabe wird erfindungsgemäss, dadurch gelöst, dass das Gewinde (erhabener Teil) der Schraubkappe vor Erreichen eines Winkels von 360° gerechnet vom Gewindeanfang (unteres Gewindeende) mindestens eine das Gewinde unterteilende Unterbrechung aufweist.This object is achieved according to the invention in that the thread (raised part) of the screw cap has at least one interruption dividing the thread before reaching an angle of 360 ° calculated from the thread start (lower thread end).

Diese Unterbrechung ermöglicht nun ein leichteres Aufweiten des Umfanges der Schraubkappe im Bereich der ersten Gewindewindung, so dass beim Aufsetzen der Schraubkappe innerhalb eines Drehbereiches, in dem die Schraubkappe ansonsten schräg zu liegen käme, nunmehr unter Adwand einer geringen Kraft die erste Windung des Gewindes der Schraubkappe über das erste Gewinde des Flaschengewindes überschnappenThis interruption now enables an easier widening of the circumference of the screw cap in the area of the first thread winding, so that when the screw cap is placed within a turning range in which the screw cap would otherwise lie obliquely, the first turn of the thread of the screw cap is now applied with a small force snap over the first thread of the bottle thread

Claims (8)

1. Kunststoff-Schraubkappe für Flaschen, dadurch gekennzeichnet,
dass das Gewinde (erhabenener Teil/ 10) der Schraubkappe vor Erreichen eines Winkels von
360° gerechnet vom Gewindeanfang (unteres Gewindeende/ 12) mindestens eine das Gewinde unterteilende Unterbrechung (14) aufweist.1. plastic screw cap for bottles, characterized in that
that the thread (raised part / 10) of the screw cap before reaching an angle of
Calculated 360 ° from the beginning of the thread (lower thread end / 12) has at least one interruption (14) dividing the thread. 2. Schraubkappe nach Anspruch 1, dadurch gekennzeichnet, dass die Unterbrechung (14) an einer Stelle vorgesehen ist, an der die Kraft zum Überschnappen des Schraubkappengewindes über das Flaschenhalsgewinde beim Aufsetzen der Schraubkappe, wenn diese schräg zu liegen kommt, im Mittel am geringsten ist.2. Screw cap according to claim 1, characterized in that the interruption (14) is provided at a point at which the force for snapping the screw cap thread over the bottle neck thread when putting on the screw cap, if it comes to lie at an angle, is the lowest on average . 3. Schraubkappe nach Anspruch 1, dadurch gekennzeichnet, dass die Unterbrechung (14) an der Stelle des Schraubkappengewindes (10) vorgesehen ist, die vom Schraubkappengewindeanfang (12) soweit entfernt ist, wie die Stelle des Gewindeanfangs der Schraubkappe vom Gewindeanfang der Flasche, wenn die Kraft zum Überschnappen am grössten wird.3. Screw cap according to claim 1, characterized in that the interruption (14) is provided at the location of the screw cap thread (10) which is as far away from the screw cap thread start (12) as the point at which the screw cap starts from the thread start of the bottle when the force to snap over becomes greatest. 4. Schraubkappe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Stelle, an der die Unterbrechung (14) am Schraubkappengewinde (10) vorgesehen ist, vom Gewindeanfang (12) der Schraubkappe etwa 90° entfernt ist.4. Screw cap according to one of claims 1 to 3, characterized in that the point at which the interruption (14) is provided on the screw cap thread (10) is about 90 ° from the thread start (12) of the screw cap. 5. Schraubkappe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schraubkappe mehrere Windungen aufweist, wobei die Unterbrechung (14) in der ersten Windung vorgesehen ist.5. Screw cap according to one of the preceding claims, characterized in that the screw cap has a plurality of turns, the interruption (14) being provided in the first turn. 6. Schraubkappe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass nur eine einzige Unterbrechung (14) vorgesehen ist.6. Screw cap according to one of the preceding claims, characterized in that only a single interruption (14) is provided. 7. Schraubkappe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mehrere Unterbrechungen vorgesehen sind.7. Screw cap according to one of the preceding claims, characterized in that several interruptions are provided. 8. Schraubkappe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gewindeenden an den Unterbrechungen sich in Breite und Höhe allmählich verjüngen. kann und dadurch die Schraubkappe eben zu liegen kommt und ordnungsgemäss aufgedreht werden kann. Vorzugsweise ist die Unterbrechung an einer Stelle vorgesehen, an der die Kraft zum überschnappen des Schraubkappengewindes über das Flaschenhalsgewinde beim Aufsetzen der Schraubkappe, wenn diese schräg zu liegen kommt, im Mittel am geringsten ist.
Dem liegt fclgender Sachverhalt zugrunde. Die grösste Schräglage der Schraubkappe wird erreicht, wenn Gewindeanfang auf Gewindeanfang zu liegen kommt. In diesem Fall ist es aber auch bei den bekannten Kunststoff-Schraubkappen relativ leicht möglich, die Schraubkappe durch Überschnappen über das Flaschenhalsgewinde in eine gerade Lage zu überführen, so dass sie ordnungsgemäss aufgeschraubt werden kann. Wird nun von der Stelle, an der die Schraubkappe ihre grösste Schräglage einnimmt, die Schraubkappe im Sinne eines Aufschraubens gedreht, so nimmt allmählich die Schräglage entsprechend der Gewindesteigung ab, wobei aber die zum überschnappen erforderliche . Kraft zunimmt, bis sie einen Maximalwert erreicht, um dann wieder abzunehmen. Schliessliegt liegt die Schraubkappe mit dem grössten Teil ihrer ersten Windung auf der ersten Windung des Flaschengewindes auf, so dass eine Schräglage nicht mehr gegeben ist.
Daher ist es auch zweckmässig, die Unterbrechung an die Stelle des Schraubkappengewindes zu legen, die vom Schraubkappengewindeanfang so weit entfernt ist, wie die Stelle des Gewindeanfangs der Schraubkappe vom Gewindeanfang der Flasche, wenn die Kraft zum Überschnappen am grössten wird. Aus den obigen Ausführungen geht hervor, dass, wenn sonst keine weiteren Besonderheiten vorliegen, die Stelle, an der die Unterbrechung am Schraubkappengewinde vorgesehen ist, vom Gewindeanfang der Schraubkappe etwa 90° entfernt sein wird. Die Gewinde von Schraubkappe und Flasche-können mehrere Windungen aufweisen, wobei aber die Unterbrechung immer nur in der ersten Windung des Schraubkappengewindes vorgesehen ist. Auch können anstelle einer Unterbrechung mehrere Unterbrechungen vorgesehen werden, ohne den Rahmen der Erfindung zu verlassen. In der beiliegenden Zeichnung, die zwei Figuren umfasst, von denen Fig. 1 eine Ansicht von unten auf die offene Seite der Schraubkappe und Fig. 2 einen Schnitt durch die Schraubkappe zeigt, ist die Erfindung nochmals veranschaulicht. Das Gewinde 10 der Schraubkappe mit dem Gewindeanfang 12 ist an der Stelle 14 unterbrochen, wobei die Gewindeenden an der Unterbrechungsstelle 14 wie gezeigt abgeschrägt sind.8. Screw cap according to one of the preceding claims, characterized in that the thread ends at the interruptions gradually taper in width and height. can and thus the screw cap comes to lie flat and can be opened properly. The interruption is preferably provided at a point at which the force for snapping the screw cap thread over the bottle neck thread when the screw cap is put on, when it comes to lie at an angle, is the lowest on average.
This is based on the following facts. The greatest inclined position of the screw cap is achieved when the thread start lies on the thread start. In this case, however, it is also relatively easy with the known plastic screw caps to transfer the screw cap into a straight position by snapping it over the bottle neck thread, so that it can be screwed on properly. If the screw cap is rotated from the point at which the screw cap assumes its largest inclined position in the sense of being screwed on, then the inclined position gradually decreases in accordance with the thread pitch, but the one required for snapping over. Force increases until it reaches a maximum value and then decreases again. Finally, the screw cap lies with most of its first turn on the first turn of the bottle thread, so that there is no longer an inclined position.
Therefore, it is also advisable to indicate the interruption the position of the screw cap thread that is as far away from the beginning of the screw cap thread as the place of the beginning of the thread of the screw cap from the beginning of the bottle thread when the force to snap over is greatest. It is apparent from the above statements that, if there are no other special features, the point at which the interruption is provided on the screw cap thread will be approximately 90 ° away from the beginning of the thread of the screw cap. The threads of the screw cap and bottle can have several turns, but the interruption is always provided only in the first turn of the screw cap thread. Instead of one interruption, several interruptions can also be provided without departing from the scope of the invention. The invention is illustrated again in the accompanying drawing, which comprises two figures, of which FIG. 1 shows a view from below of the open side of the screw cap and FIG. 2 shows a section through the screw cap. The thread 10 of the screw cap with the thread start 12 is interrupted at point 14, the thread ends at the point of interruption 14 being chamfered as shown.
EP82107621A 1982-02-06 1982-08-20 Threaded cap made of plastics for bottles Expired EP0085741B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82107621T ATE16265T1 (en) 1982-02-06 1982-08-20 PLASTIC SCREW CAP FOR BOTTLES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3204201 1982-02-06
DE19823204201 DE3204201A1 (en) 1982-02-06 1982-02-06 PLASTIC SCREW CAP FOR BOTTLES

Publications (2)

Publication Number Publication Date
EP0085741A1 true EP0085741A1 (en) 1983-08-17
EP0085741B1 EP0085741B1 (en) 1985-10-30

Family

ID=6155046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107621A Expired EP0085741B1 (en) 1982-02-06 1982-08-20 Threaded cap made of plastics for bottles

Country Status (9)

Country Link
US (1) US4448319A (en)
EP (1) EP0085741B1 (en)
AT (1) ATE16265T1 (en)
CA (1) CA1181364A (en)
DD (1) DD210443A1 (en)
DE (2) DE3204201A1 (en)
ES (1) ES273589U (en)
GR (1) GR76393B (en)
NO (1) NO821394L (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050269282A1 (en) * 1990-08-09 2005-12-08 Portola Packaging, Inc. Tamper-evident cap and container neck
US5267661A (en) * 1990-08-09 1993-12-07 Portola Packaging, Inc. Snap-on, screw off cap and container neck
US5190178A (en) * 1990-08-09 1993-03-02 Cap Snap Co Snap-on, screw-off cap and container neck
US5213224A (en) * 1990-08-09 1993-05-25 Portola Packaging, Inc. Snap-on, screw-off cap and container neck
US5415306A (en) * 1990-08-09 1995-05-16 Portola Packaging, Inc. Foil lined snap-on, screw-off closure and container neck
US5664694A (en) * 1990-08-09 1997-09-09 Portola Packaging, Inc. Foil lined snap-on, screw-off closure and container neck
US5975321A (en) * 1990-08-09 1999-11-02 Portola Packaging, Inc. Snap-on, screw-off cap with tamper-evidencing skirt and container neck
US5456376A (en) * 1990-08-09 1995-10-10 Portola Packaging, Inc. Snap-on, screw off cap and container neck
US6073809A (en) * 1996-02-15 2000-06-13 International Plastics And Equipment Corporation Snap-on tamper evident closure with push-pull pour spout
US5862953A (en) * 1996-04-16 1999-01-26 International Plastics And Equipment Corporation Tamper evident push-pull closure with pour spout
DE69822493T2 (en) * 1997-10-30 2004-12-23 International Plastics And Equipment Corp. SCREW-ON AND SNAP LOCK
US6059134A (en) * 1997-10-30 2000-05-09 International Plastics And Equipment Corporation Snap-on screw-off closure for use in combination with a container
US5947309A (en) * 1998-03-09 1999-09-07 Premium Plastics, Inc. Container-closure combination with improved sealing feature
WO2001055000A1 (en) 2000-01-29 2001-08-02 Portola Packaging, Inc. Threaded tamper-evident closure and neck finish for such a closure
USD851983S1 (en) 2017-11-01 2019-06-25 American Maid Plastic Co. Splash resistant cap

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1351496A (en) * 1918-07-09 1920-08-31 Spooner Charles Horace Jar-closure
US3130848A (en) * 1963-06-11 1964-04-28 Roy D Chancellor Bottle cap with interrupted threads
US3402842A (en) * 1967-02-10 1968-09-24 Stephen J. Millian Safety closure
DE3006481A1 (en) * 1980-02-21 1981-08-27 Albert Obrist AG, Reinach, Basel METHOD FOR CLOSING A CONTAINER SLEEVE AND SCREW CAP FOR CARRYING OUT THE METHOD

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
US11677A (en) * 1854-09-12 Spoke-machine
US1423592A (en) * 1922-07-25 Closure
US1457418A (en) * 1922-04-22 1923-06-05 Frederic E Baldwin Closure for fruit and other wide-mouthed jars
US2770382A (en) * 1952-08-13 1956-11-13 Armstrong Cork Co Container
US3734322A (en) * 1971-07-14 1973-05-22 W Vaillancourt Freighting frames for automobiles
US4180175A (en) * 1977-02-18 1979-12-25 Maxcap, Inc. Blow molded plastic bottle and antitamper cap
CH612389A5 (en) * 1977-03-29 1979-07-31 Albert Obrist

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1351496A (en) * 1918-07-09 1920-08-31 Spooner Charles Horace Jar-closure
US3130848A (en) * 1963-06-11 1964-04-28 Roy D Chancellor Bottle cap with interrupted threads
US3402842A (en) * 1967-02-10 1968-09-24 Stephen J. Millian Safety closure
DE3006481A1 (en) * 1980-02-21 1981-08-27 Albert Obrist AG, Reinach, Basel METHOD FOR CLOSING A CONTAINER SLEEVE AND SCREW CAP FOR CARRYING OUT THE METHOD

Also Published As

Publication number Publication date
EP0085741B1 (en) 1985-10-30
GR76393B (en) 1984-08-10
DE3204201A1 (en) 1983-08-11
ATE16265T1 (en) 1985-11-15
CA1181364A (en) 1985-01-22
ES273589U (en) 1984-05-16
NO821394L (en) 1983-08-08
US4448319A (en) 1984-05-15
DE3267176D1 (en) 1985-12-05
DD210443A1 (en) 1984-06-13

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