EP0419790B1 - Plastic closure for mouths of containers and bottles - Google Patents

Plastic closure for mouths of containers and bottles Download PDF

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Publication number
EP0419790B1
EP0419790B1 EP90114178A EP90114178A EP0419790B1 EP 0419790 B1 EP0419790 B1 EP 0419790B1 EP 90114178 A EP90114178 A EP 90114178A EP 90114178 A EP90114178 A EP 90114178A EP 0419790 B1 EP0419790 B1 EP 0419790B1
Authority
EP
European Patent Office
Prior art keywords
closure
snap hinge
lid
maximum size
cap
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
EP90114178A
Other languages
German (de)
French (fr)
Other versions
EP0419790A2 (en
EP0419790A3 (en
Inventor
Klaus Thanisch
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.)
Obrist Closures Switzerland GmbH
Original Assignee
Zeller Plastik 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 Zeller Plastik GmbH filed Critical Zeller Plastik GmbH
Priority to AT90114178T priority Critical patent/ATE89799T1/en
Publication of EP0419790A2 publication Critical patent/EP0419790A2/en
Publication of EP0419790A3 publication Critical patent/EP0419790A3/en
Application granted granted Critical
Publication of EP0419790B1 publication Critical patent/EP0419790B1/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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/08—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures
    • B65D47/0804—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage
    • B65D47/0809—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage and elastically biased towards both the open and the closed positions

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Packages (AREA)

Abstract

A closure of plastic, especially polypropylene, for the necks of containers, especially bottles. The outer wall (8) of the closure flares lengthwise of the neck from the top end of the closure down to a circumferential line (29) of maximum size and tapers again toward the bottom end of the closure. The bottom part (2) and lid (26) of the closure are joined together by a snap hinge (28). This snap hinge is integral with the bottom part and lid and is situated in their outer walls. The depth of the main part (26.1) of the lid (26) is substantially less than the difference in level of the closure between its circumferential line (29) of maximum size and its upper end. For its connection to the snap hinge (28) the lid has an arm (26.3) on one side. The active elements of the snap hinge are disposed symmetrically with the circumferential line (29). This closure has a lid of relatively small size and can be made with a two-part injection mold which does not need to have any lateral slides.

Description

Die Erfindung bezieht sich auf einen Verschluß mit den im Oberbegriff von Anspruch 1 genannten Merkmalen. Verschlüsse dieser Art werden aus Kunststoff, insbesondere Polypropylen gespritzt.The invention relates to a closure with the features mentioned in the preamble of claim 1. Closures of this type are injection molded from plastic, in particular polypropylene.

Bekannt und auf dem Markt erhältlich sind Verschlüsse nach Figur 3 der dieser Anmeldung beigefügten Zeichnung. Die Außenseite dieser Verschlüsse erweitert sich in Längsrichtung der Mündung vom oberen Ende her bis zu einer Umfangslinie maximaler Größe und verjüngt sich nach unten zu wieder.Closures according to FIG. 3 of the drawing attached to this application are known and available on the market. The outside of these closures widens in the longitudinal direction of the mouth from the upper end to a circumferential line of maximum size and tapers downwards again.

Begriffe wie "oben", "unten" beziehen sich auf die Lage des Verschlusses in den Zeichnungen. Der Begriff "Längsrichtung der Mündung" ist hier eine lotrechte Achse, kann im allgemeineren Fall aber eine Gerade sein, die in Längsrichtung einer nicht kreiszylindrischen sondern anders geformten Mündung verläuft.Terms such as "above", "below" refer to the position of the closure in the drawings. The term “longitudinal direction of the mouth” here is a vertical axis, but in the more general case it can be a straight line that runs in the longitudinal direction of a mouth that is not circular-cylindrical but has a different shape.

Befindet sich die Umfangslinie maximaler Größe, wie in Figur 3, etwa auf halber Höhe des Verschlusses und will man mit einer zweiteiligen Spritzform auskommen, also einer Form ohne seitliche Schieber, so blieb nach dem Stand der Technik nur übrig, den Deckel relativ hoch zu gestalten, wie es Figur 3 zeigt. Ein solcher Deckel ist für den Verbraucher hinderlich, weil zu voluminös. Er kann auch den Entnahmevorgang behindern.If the circumferential line of maximum size, as in FIG. 3, is approximately halfway up the closure and if you want to get by with a two-part injection mold, that is to say a mold without lateral sliders, the only thing left in the prior art was to make the lid relatively high as shown in Figure 3. Such a lid is a hindrance to the consumer because it is too bulky. It can also hinder the removal process.

Durch die vorliegende Erfindung soll daher ein Verschluß geschaffen werden, dessen Umfangslinie maximaler Größe ebenfalls weit unterhalb seines Oberendes liegt, bei dem aber der Deckel eine geringere Höhe hat. Der Verschluß soll überdies mit einer zweiteiligen Form herstellbar sein.The present invention is therefore intended to provide a closure whose maximum maximum circumferential line is also far below its upper end, but in which the lid has a lower height. The closure should also be able to be produced in a two-part form.

Nach Figur 3 fällt die Umfangslinie maximaler Größe in eine Ebene. Dies ist nicht zwingend notwendig. Diese Umfangslinie könnte auch in einer gekrümmten Fläche liegen. Die Querschnitte durch den Verschluß brauchen auch nicht kreisförmig zu sein, sondern können oval oder anders geformt sein.According to Figure 3, the circumferential line of maximum size falls into one plane. This is not absolutely necessary. This circumferential line could also lie in a curved surface. The cross-sections through the closure do not need to be circular, but can be oval or other shapes.

Die oben genannte Aufgabe wird durch die Erfindung gemäß Anspruch 1 gelöst.The above object is achieved by the invention according to claim 1.

Hiernach erhält man einen Deckel, dessen Hauptteil eine sehr niedrige Bauhöhe hat, dadurch, daß der Deckel mit einem einseitigen Fortsatz ausgestattet ist, der in Geschlossenstellung nahezu an die Umfangslinie maximaler Größe heranreicht. Er reicht über die Länge des Schnappscharniers nicht ganz an die Umfangslinie heran, weil noch Platz für die wirksamen Elemente des Schnappscharniers vorhanden sein muß, die zwischen dem Unterteil und dem Fortsatz des Deckels angeordnet sind. Mit "wirksame Elemente des Schnappscharniers" werden hier die Elemente bezeichnet, die sich zwischen Unterteil des Verschlusses und Fortsatz des Deckels befinden.Thereafter, a cover is obtained, the main part of which has a very low overall height, in that the cover is equipped with a one-sided extension which, in the closed position, almost reaches the circumferential line of maximum size. It does not quite reach the circumference over the length of the snap hinge, because there must still be room for the effective elements of the snap hinge, which are arranged between the lower part and the extension of the cover. “Effective elements of the snap hinge” are used here to denote the elements which are located between the lower part of the closure and the extension of the cover.

Hierfür geeignete Schnappscharniere sind bekannt, z. B. aus der EP-B-0 056 469 oder der ihr etwa entsprechenden US-A-4 403 712, insbesondere aus den Figuren 15 bis 18 beider Patentschriften. Es können aber auch andersartige Schnappscharniere verwendet werden.Suitable snap hinges are known for. B. from EP-B-0 056 469 or the approximately corresponding US-A-4 403 712, in particular from Figures 15 to 18 of both patents. However, different types of snap hinges can also be used.

Dadurch, daß der Deckel mit einem Fortsatz ausgestattet ist, kann sein Hauptteil eine sehr geringe Bauhöhe erhalten. Ein solcher Deckel behindert den Benutzer weniger als ein Deckel großer Bauhöhe nach der beigefügten Figur 3. Ein Verschluß nach der Erfindung läßt sich mit einer zweiteiligen Spritzform herstellen.Because the cover is equipped with an extension, its main part can have a very low overall height. Such a cover hampers the user less than a large height cover according to the attached figure 3. A closure according to the invention can be produced with a two-part injection mold.

Aus der deutschen Gebrauchsmusterschrift 1 995 401 - WOLF - ist bereits ein Schnappscharnierverschluß bekannt, bei dem die Höhe des Hauptteils des Deckels kleiner ist als die Höhendifferenz zwischen seiner Scharnierhauptachse und der Oberkante des Verschlußunterteils und der Deckel dementsprechend einen einseitigen Fortsatz hat. Bei diesem Verschluß befindet sich die Hauptachse des Schnappscharniers aber weit außerhalb des Deckelunterteils, wodurch sich einseitige Fortsätze des Verschlusses ergeben, die unschön aussehen und das Aufsetzen des Verschlusses mit Verschließmaschinen behindern oder unmöglich machen. Nach der vorliegenden Erfindung ergibt sich dagegen ein Verschluß, der in Geschlossenstellung einen symmetrischen Eindruck macht und bei dem in dieser Stellung keine Teile nach außen vorstehen.From the German utility model 1 995 401 - WOLF - a snap hinge closure is already known, in which the height of the main part of the lid is smaller than the height difference between its main hinge axis and the upper edge of the lower closure part and the lid accordingly has a one-sided extension. With this fastener, the main axis of the snap hinge is located far outside the lower part of the lid, which results in one-sided extensions of the fastener that look unsightly and impede or make impossible the placement of the fastener with capping machines. According to the present invention, however, there is a closure which makes a symmetrical impression in the closed position and in which no parts protrude outwards in this position.

Weiterbildungen der ErfindungDevelopments of the invention

ergeben sich aus den Unteransprüchen.result from the subclaims.

Der Verschluß läßt sich so ausgestalten, daß der Fortsatz des Deckels in Geschlossenstellung in einer flachen Aussparung des Unterteils verschwindet. Somit ergibt sich ein gefälliges Aussehen des Verschlusses. Es stehen keine Teile nennenswert nach außen vor, so daß das Aufbringen des Verschlusses mit herkömmlichen Verschließmaschinen nicht behindert wird.The closure can be designed so that the extension of the cover disappears in the closed position in a flat recess in the lower part. This gives the closure a pleasing appearance. No parts protrude significantly outwards, so that the application of the closure is not hindered by conventional sealing machines.

Durch Abschnitte des Deckelfortsatzes, die in Geschlossenstellung beiderseits der wirksamen Scharnierelemente vorhanden sind und bis an die Umfangslinie maximaler Größe heranreichen, läßt sich vermeiden, daß die Spritzform außerhalb der äußersten Scharnierelemente eine messerscharfe Kante haben müßte, was die Herstellung erschweren und die Lebensdauer der Form herabsetzen würde.By sections of the lid extension, which are present on both sides of the effective hinge elements in the closed position and reach up to the circumferential line of maximum size, it can be avoided that the injection mold should have a razor-sharp edge outside the outermost hinge elements, which complicates the manufacture and reduces the life of the mold would.

Ein Ausführungsbeispiel mit weiteren Merkmalen der Erfindung wird im folgenden anhand der Zeichnungen beschrieben.

Figur 1
ist ein Axialschnitt durch einen Verschluß nach der Erfindung in einer Lage, wie er in der Spritzform hergestellt wird.
Figur 2
ist eine Draufsicht auf den Verschluß in derselben Lage.
Figur 3
ist ein Axialschnitt durch einen Verschluß nach dem Stand der Technik in der gleichen Darstellungsart wie Figur 1.
Figur 4 bis 6
sind Seitenansichten des Verschlusses nach der Erfindung, und zwar
Figur 4
auf das Scharnier gesehen,
Figur 5
auf eine Außenseite, in Längsrichtung des Scharniers gesehen,
Figur 6
auf die Eingriffseite gesehen.
Figur 7
zeigt perspektivisch den gleichen Verschluß in einer sich im Gebrauch einstellenden Offenstellung.
An embodiment with further features of the invention is described below with reference to the drawings.
Figure 1
is an axial section through a closure according to the invention in a position as it is made in the injection mold.
Figure 2
is a top view of the closure in the same position.
Figure 3
is an axial section through a closure according to the prior art in the same representation as Figure 1.
Figure 4 to 6
are side views of the closure according to the invention, namely
Figure 4
seen on the hinge,
Figure 5
on an outside, seen in the longitudinal direction of the hinge,
Figure 6
seen on the engagement side.
Figure 7
shows in perspective the same closure in an open position in use.

Der bekannte Verschluß nach Figur 3 hat einen Unterteil 2 mit einem Innengewinde 4 zum Aufschrauben auf die Mündung einer Flasche oder eines Behälters. Er hat eine Austrittsöffnung 6 und eine Außenwand 8, die ausgebaucht ist. Vom Boden 10 des Unterteils her erweitert sich die Außenwand in ihrem oberen Abschnitt 8.1 bis gegen eine Ebene 12, die quer zur Längsachse 14 des Verschlusses verläuft. Der Unterteil erweitert sich dort sprungartig, und der untere Abschnitt 8.3 der Außenwand 8 verjüngt sich anschließend nach unten. Der Deckel 16 ist mit einem Scharnier 18 an der Sprungstelle des Unterteils, nämlich in der Ebene 12 angelenkt. Der Deckel hat eine etwas größere Bauhöhe als der obere Abschnitt 8.1.The known closure according to Figure 3 has a lower part 2 with an internal thread 4 for screwing onto the mouth of a bottle or a container. It has an outlet opening 6 and an outer wall 8 which is bulged. From the bottom 10 of the lower part, the outer wall widens in its upper section 8.1 up to a plane 12 which runs transversely to the longitudinal axis 14 of the closure. The lower part widens abruptly there, and the lower section 8.3 of the outer wall 8 then tapers downward. The lid 16 is hinged at the jump point of the lower part, namely in the plane 12. The cover has a slightly greater height than the upper section 8.1.

Diese Bauhöhe des Deckels ist nach dem Stand der Technik erforderlich, wenn der Verschluß mit einer zweiteiligen Spritzform herstellbar sein soll.This overall height of the lid is necessary according to the prior art if the closure is to be able to be produced with a two-part injection mold.

Der Verschluß nach der Erfindung (Figuren 1, 2 und 4 bis 7) hat einen Unterteil 20, der sich auf eine Mündung aufprellen läßt und mit Rastnocken 22 (Figur 1) unterhalb eines Außenwulstes der Mündung festgehalten wird.The closure according to the invention (Figures 1, 2 and 4 to 7) has a lower part 20 which can be bounced onto a mouth and is held in place by means of locking cams 22 (Figure 1) below an outer bead of the mouth.

Der Unterteil hat eine Außenwand 24, die sich von oben nach unten bis zur Umfanglinie 29 maximaler Größe erweitert und dann wieder verjüngt, aber über den größten Teil ihres Umfangs keine Sprungstelle hat. Die Umfangslinie 29 maximaler Größe fällt in eine in den Figuren 1 und 5 strichpunktiert eingezeichnete Ebene 30. Der Deckel 26 hat einen Hauptteil 26.1 geringer Bauhöhe und einen Fortsatz 26.3, der die Verbindung vom Hauptteil zu einem Schnappscharnier 28 bildet. Das Schnappscharnier kann vorzugsweise nach den Figuren 15 bis 18 der oben genannten Patentschriften ausgebildet sein und in der Mitte ein Filmscharnier 28.2 und beiderseits davon je ein Zwischenelement 28.4 aufweisen. Die Zwischenelemente können wenig oder kaum dehnfähig sein, so daß beim Schnappvorgang andere Teile des Verschlusses, insbesondere der Fortsatz 26.3 elastisch verformt werden. Die Zwischenelemente 28.4 und das Filmscharnier 28.2 werden hier gemeinsam als die wirksamen Elemente des Schnappscharniers bezeichnet.The lower part has an outer wall 24 which widens from top to bottom to the circumferential line 29 of maximum size and then tapers again, but has no crack over most of its circumference. The circumferential line 29 of maximum size falls into a plane 30 shown in dash-dot lines in FIGS. 1 and 5. The cover 26 has a main part 26.1 of low overall height and an extension 26.3 which forms the connection from the main part to a snap hinge 28. The snap hinge can preferably be designed according to FIGS. 15 to 18 of the above-mentioned patents and have a film hinge 28.2 in the middle and an intermediate element 28.4 on each side thereof. The intermediate elements can be little or hardly stretchable, so that other parts of the closure, in particular the extension 26.3, are elastically deformed during the snap process. The intermediate elements 28.4 and the film hinge 28.2 are collectively referred to here as the effective elements of the snap hinge.

In der Außenwand 24 des Unterteils ist eine Aussparung 24.2 (Figur 7) vorgesehen, die dazu dient, den Fortsatz 26.3 des Deckels in Geschlossenstellung aufzunehmen. Der Fortsatz 26.3 des Deckels hat außerhalb der Zwischenelemente 28.4 des Scharniers je einen vorspringenden Abschnitt 26.6, der sich in Geschlossenstellung an einen Vorsprung 24.6 innerhalb der Aussparung 24.2 legt.A recess 24.2 (FIG. 7) is provided in the outer wall 24 of the lower part and serves to receive the extension 26.3 of the cover in the closed position. The extension 26.3 of the cover has a projecting section 26.6 outside the intermediate elements 28.4 of the hinge, which in the closed position lies against a projection 24.6 within the recess 24.2.

Claims (3)

  1. Closure of plastics material, particularly polypropylene, for openings of containers, particularly bottles, which is constructed in the following manner:
    a) the outer wall (8) of the closure broadens in the longitudinal direction of the opening from the upper end of the closure, which is the outer end in the use position, to a peripheral line (29) of maximum size and tapers towards the lower end of the closure, which is directed towards the container,
    b) the lower portion (2) and the cap (26) of the closure are connected together by a snap hinge (28) arranged in their outer walls and are constructed integrally with it,
    characterised by the following features:
    c) the height of the main portion (26.1) of the cap (26) is substantially smaller than the height difference of the closure between its peripheral line (29) of maximum size and its upper end,
    d) the cap has an extension (26.3) on one side which nearly reaches the peripheral line (29) of maximum size,
    e) the operative elements of the snap hinge (28) are arranged symmetrically with respect to this peripheral line and are connected on the one hand to the lower portion (20) and on the other hand to the extension (26.3) of the cap.
  2. Closure as claimed in Claim 1, characterised in that the lower portion has an external flat recess (24.2) which serves to accommodate the extension (26.3) of the cap and the operative elements of the snap hinge (28) in the closed position.
  3. Closure as claimed in Claim 2, characterised in that the extension (26.3) of the cap has sections (26.6) which, in the closed position, extend within the recess (24.2) on both sides of the operative elements of the snap hinge (28) to the peripheral line (29) of maximum size.
EP90114178A 1989-09-29 1990-07-24 Plastic closure for mouths of containers and bottles Expired - Lifetime EP0419790B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90114178T ATE89799T1 (en) 1989-09-29 1990-07-24 PLASTIC CAP FOR CONTAINER AND BOTTLE NOSES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8911643U 1989-09-29
DE8911643U DE8911643U1 (en) 1989-09-29 1989-09-29

Publications (3)

Publication Number Publication Date
EP0419790A2 EP0419790A2 (en) 1991-04-03
EP0419790A3 EP0419790A3 (en) 1992-04-01
EP0419790B1 true EP0419790B1 (en) 1993-05-26

Family

ID=6843306

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90114178A Expired - Lifetime EP0419790B1 (en) 1989-09-29 1990-07-24 Plastic closure for mouths of containers and bottles

Country Status (8)

Country Link
US (1) US5067624A (en)
EP (1) EP0419790B1 (en)
AT (1) ATE89799T1 (en)
CA (1) CA2026192C (en)
DD (1) DD297380A5 (en)
DE (2) DE8911643U1 (en)
DK (1) DK0419790T3 (en)
ES (1) ES2041475T3 (en)

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GB2166122B (en) * 1984-10-17 1988-04-13 Schema Limited Snap-action closures
US4666068A (en) * 1984-10-25 1987-05-19 Sunbeam Plastics Corporation Two piece dispensing closure
CH667059A5 (en) * 1985-07-23 1988-09-15 Alfatechnic Ag PLASTIC LOCK WITH GUARANTEE BAND.
US4718567A (en) * 1987-04-01 1988-01-12 Polytop Corporation Child resistant dispensing closure
US4759455A (en) * 1987-04-29 1988-07-26 Polytop Corporation Child resistant closure with deformable panel
US4778071A (en) * 1988-02-16 1988-10-18 Owens-Illinois Closure Inc. Closure with snap type hinge
US4793501A (en) * 1988-03-17 1988-12-27 Creative Packaging Corp. Water tight hinge closure
US4915268A (en) * 1988-11-02 1990-04-10 Pittway Corporation Closure with dispensing applicator

Also Published As

Publication number Publication date
DD297380A5 (en) 1992-01-09
ES2041475T3 (en) 1993-11-16
DK0419790T3 (en) 1993-06-21
CA2026192C (en) 1997-05-27
DE59001551D1 (en) 1993-07-01
EP0419790A2 (en) 1991-04-03
CA2026192A1 (en) 1991-03-30
EP0419790A3 (en) 1992-04-01
DE8911643U1 (en) 1991-02-07
ATE89799T1 (en) 1993-06-15
US5067624A (en) 1991-11-26

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