DE69922423T2 - cap - Google Patents

Abstract

An injection moulded, plastics material cap 1 for a screw top bottle has a top and a skirt with an anti-tamper band 2 connected to the skirt at a tear-off line by links 3. On the inside of the top of the cap, a depending annular ridge 10 is provided. Its inside diameter is such that it abuts and seals on the outside diameter of the distal end of neck of the bottle. Also on the inside of the cap, inside the ridge 10, is moulded, a forked feature having an inner limb 12 which extends generally downwards with an outwards bias, and an outer limb 13 which extends generally outwards with downwards bias. The inner limb is dimensioned to fit inside the mouth at the neck of the bottle, sealingly engaging it, whilst the outer limb is dimensioned to abut the end of the neck, also sealingly engaging it when the cap is screwed tight. On the inside of the anti-tamper band, upwardly and inwardly extending tongues 21 are provided. Adjacent ones of these are interconnected by webs 20 in the form of invert V folds. The folds extend up and out (radially) from the tongues. The latter have ribs 22 on their outer faces. Above the proximal ends of the tongues, a ridge 23 is provided around the inside of the band, at a position such that the ribs abut it when the tongues are pushed up, as on screwing of the cap onto the bottle. The combined action of the folded webs 20 and the resilience of the tongues 21 themselves causes them to spring inwards when pushed outwards during fitting of the cap to the bottle. The abutment of the ribs 22 against the ridge 23 limits the outwards movement of the tongues.

Description

BACKGROUND THE INVENTION

Field of the invention

The The present invention relates to a plastic material cap according to the preamble of claim 1 for closing a container, and in particular, but not exclusively, a closure flap for one Bottle with screw cap.

description of the prior art

conventional Plastic material caps for screw cap bottles have deposits inside the bottom of the cap, acting as seals serve. When the cap is screwed onto the neck of the bottle, presses the top of the neck the insole together, making the bottle sealed becomes. Making caps with inserts of a different material However, it is time consuming and costly and material-consuming. Furthermore is a recycling due to the use of two different ones Material types difficult. Furthermore are a reliable one To achieve sealing, the use of the correct material for the insert and proper attachment of the liner to the cap is crucial for one effective sealing.

In Improvements have been introduced recently. Instead of the deposit can a ring that extends from the inside of the cap bottom extends below. If the cap then on the bottle screwed on, lie the ring and the top of the neck while sealing the bottle close to each other. However allowed the material for the cap may not be as flexible as that for a liner, which is why the Accuracy of the shape of the cap is critical. In addition, the power, with which the cap is applied, which means using a capping machine or from a capper applied torque is higher than in the application with a liner in the cap. Increasing the torque can turn unreliability cause.

• • ein Oberteil und eine Seitenwandung;
• • ein erstes, ringförmiges und zum Anliegen an der Innenseite eines Mündungshalses des Behälters angeordnetes Dichtungselement und
• • ein zweites ringförmiges, zum Anliegen am distalen Ende des Mündungshalses des Behälters angeordnetes Dichtungselement,
• • wobei das erste und das zweite Element einen gemeinsamen Wurzelansatz aufweisen, wobei das Anliegen des distalen Endes des Behälters am zweiten Element für ein Verdrehen des ersten Elementes in dichteren Kontakt mit der Innenseite des Mündungshalses sorgt, und
• • ein drittes ringförmiges, zum Anliegen an der Außenseite des Mündungshalses des Behälters angeordnetes Dichtungselements, sowie
• • Mittel an der Seitenwandung zum Halten der Kappe in dichtender Anordnung mit dem Behälter.

European Patent Application No. 0508668 describes a plastic material cap for closing a container, the cap comprising:

• • a top and a side wall;
• • A first, annular and arranged to rest on the inside of a neck neck of the container sealing element and
• A second annular sealing element arranged to rest on the distal end of the mouth of the container;
• Wherein the first and second members have a common root extension, the abutment of the distal end of the container with the second member providing for rotation of the first member into closer contact with the inside of the mouth throat, and
• A third annular sealing element arranged to rest on the outside of the mouth of the container, and
• • Side wall means for holding the cap in sealing engagement with the container.

Another common feature is the addition of an anti-taping band at the bottom of the side wall of the cap. This is connected to the cap by means of breakable connecting pieces which extend from the side wall towards the band. If, as is common, the anti-taping band has a continuous inner bead which engages and engages a complementary bead on the bottle, a considerable amount of force and torque must be transmitted to the band by means of the connectors. For this purpose, the connectors must have a certain size. However, enlarging the connectors to a size that forces the beads to overlap may make the connectors too strong for simply breaking the anti-taping band off the side wall when the bottle is opened. The EP 0 683 106 describes such an anti-manipulation band according to the preamble of claim 1.

• • ein Oberteil und eine Seitenwandung;
• • integral an der Innenseite des Oberteils angeformte Mittel zum Abdichten der Kappe am Behälter;
• • Mittel an der Seitenwandung zum Halten der Kappe in dichtender Anordnung mit dem Behälter; und
• • ein Antimanipulationsband, das abbrechbar mit der Seitenwandung verbunden ist, wobei das Band aufweist
• • eine Mehrzahl von nach oben gerichteten Zungen, die am Band zum Untergreifen einer Kante am Behälter beim Zusammenfügen der Kappe mit dem Behälter federnd befestigt sind.

International Patent Application No. WO 98/26991 A describes a plastic material cap for closing a container, the cap comprising:

• • a top and a side wall;
• Integrally formed on the inside of the top, means for sealing the cap to the container;
• • means on the side wall for holding the cap in sealing arrangement with the container; and
• • an anti-tampering band that is breakably connected to the side wall, with the band having
• A plurality of upwardly directed tabs resiliently secured to the band for gripping an edge on the container upon assembly of the cap to the container.

TASK OF THE INVENTION

The The object of the invention is to provide an improved closure cap create.

SUMMARY THE INVENTION

• • ein Oberteil und eine Seitenwandung;
• • integral an dem Oberteil an dessen Innenseite ausgebildete Mittel (10, 12, 13) zum, Abdichten der Kappe am Behälter;
• • Mittel an der Seitenwandung zum Halten der Kappe (1) in dichtender Anordnung mit dem Behälter;
• • ein abbrechbar mit der Seitenwandung verbundenes Antimanipulationsband, wobei das Band aufweist:
• • eine Mehrzahl von nach oben gerichteten Zungen (21), die am Band zum Untergreifen einer Kante am Behälter beim Zusammenfügen der Kappe (1) mit dem Behälter federnd befestigt sind; und
• • zwischen den Zungen (20) angeordnete und diese untereinander verbindende Mittel (20);

dadurch gekennzeichnet

• • daß die zwischen den Zungen (20) angeordneten und diese untereinander verbindenden Mittel (20) V-förmig gefalzte Mittel sind, die sich von den Zungen (21) aus nach oben und radial nach außen erstrecken;
• • daß an den radialen Außenflächen der Zungen (21) Rippen (22) zum Begrenzen der Radialbewegung der Zungen (21) beim Zusammenfügen der Kappe mit dem Behälter vorgesehen sind; und
• • daß an der Innenseite der Seitenwandung ein Wulst (23) zum Zusammenwirken mit den Rippen (22) beim Begrenzen der Radialbewegung der Zungen (21) vorgesehen ist.

According to a plastic material cap for closing a container ge with the cap having:

• • a top and a side wall;
• Integrally formed on the upper part on the inside thereof ( 10 . 12 . 13 ) for, sealing the cap to the container;
• • means on the side wall for holding the cap ( 1 ) in sealing arrangement with the container;
• A break-off anti-taping tape connected to the sidewall, the tape comprising:
• A plurality of upwardly directed tongues ( 21 ) on the belt for gripping an edge on the container during assembly of the cap ( 1 ) are resiliently secured to the container; and
• Between the tongues ( 20 ) and interconnecting them ( 20 );

characterized

• • that between the tongues ( 20 ) and interconnecting them ( 20 ) Are V-shaped folded means extending from the tongues ( 21 ) extend upward and radially outward;
• • that on the radial outer surfaces of the tongues ( 21 ) Ribs ( 22 ) for limiting the radial movement of the tongues ( 21 ) are provided when assembling the cap with the container; and
• • that on the inside of the side wall a bead ( 23 ) to interact with the ribs ( 22 ) while limiting the radial movement of the tongues ( 21 ) is provided.

The Cap retaining means is preferably a screw thread in the Cap which engages in a thread on the container screwed.

SUMMARY THE DRAWINGS

Around the understanding for the To facilitate the invention, a specific embodiment will now be given by way of example and with reference to the attached Drawing described in which:

1 a perspective view from below of a cap according to the invention, partially broken, is;

2 the cap off 1 central cut in side view shows;

2A a partial view on an enlarged scale of the sealing detail at Y in 2 is;

2 B a partial view on an enlarged scale of the anti-masturbation details at Y in 2 is;

3 a sectional view on the same scale as 2 B by an anti-tamper tongue; and

4 a sectional view through the attached to a bottle cap.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to the drawing, the injection-molded plastic material cap shown therein has 1 for a screw cap bottle, a top and a bottom and a side wall with an anti-taping band 2 on the side wall at a break line by means of connecting pieces 3 connected is.

On the inside of the upper part or bottom of the cap an annular elevation is provided. Their inner diameter is chosen so that it rests against the outer diameter of the distal end of the neck of the bottle and seals there, as shown in FIG 4 is shown. On the inside of the cap is also, within the elevation 10 , another annular means formed with a fork-shaped cross-section. This one has an inner lip 12 Ie, a smaller diameter lip, which extends substantially downwardly with an outward bias, and an outer lip 13 which extends substantially outwardly with a downward bias. The inner lip is sized to fit into the mouth of the neck of the bottle, thereby sealingly abutting it, while the outer lip is dimensioned to abut against and also sealingly engage the end of the neck when the cap is screwed tight.

On the inside of the anti-taping band are tongues 21 provided, which extend upwards and inwards. Each adjacent tongues are by means of webs 20 connected in the form of inverse V-shaped folds. The folds extend upwardly and outwardly (radially) from the tongues. The latter have ribs 22 on their outer surfaces. Above the body-near ends of the tongues is a bead 23 provided along the inside of the band in a position such that the ribs abut against it when the tongues are pushed upwards, as happens when the cap is screwed onto the bottle. The interaction of the cut webs 20 and the softness of the tongues 21 causing them to jump inwardly as they are pushed outwardly during assembly of the cap onto the container, as described above. The abutment of the ribs 22 against the bead 23 limits the movement of the tongues to the outside.

The cap is integral with the anti-panipilla tion tape 2 injection molded and with this by means of the connectors 3 connected. When filling a bottle, the cap is placed on the neck of the bottle mouth by means of a capping machine. Within the side wall of the cap, which is above the band, the cap has screw-shaped portions complementary to the screw-shaped portions 40 at the mouth of the bottle. Below this latter, the neck has an anti-tampering edge 41 on.

The cap is screwed on and tightened by a capper. As the cap is screwed down, the tongues come into abutting contact with the edge 41 which forces her outward. when the distal ends of the tongues pass the edge, they jump under them. The arrangement of the tongues with an upwardly opening angle and the cuts between them allow the tongues to be bent already at a comparatively low torque to be applied by the capper to the cap. At the same time prevents the concern of the ribs 22 at the bead 23 Excessive deformations of the tongues for any reason. Therefore, when the tongues are on the edge 41 Come over, do not overwork them and jump back slightly to the edge 41 to be interpreted.

This happens at the point where the cap has sealed the bottle. The inner lip 12 which actually forms a continuous lip is received within and in sealing contact with the mouth of the bottle. The lip is slightly curved in the radial direction, whereby it has a clear diameter which is slightly larger than the inner diameter of the mouth. The outer lip 13 abuts against the distal end of the Mündungshales and is also slightly curved to bring them in sealing abutting contact with the neck neck. Since both lips have a common root extension in communication with the top of the cap, this causes them to pivot together. As a result, deflection of the outer lip toward the top of the cap tends to force the inner lip into closer contact with the inside of the mouth of the bottle. A third area of sealing contact is between the bump 10 and the outer edge of the bottle.

If the bottle is used for a hot fill, ie the contents are filled when hot, a small vacuum may be created in the bottle. In this case, the outer lip 13 feel a greater pressure on their outside than on their inside. This pressure difference causes the lip 13 is forced in sealing contact with the end of the bottle. On the other hand, if the pressure in the bottle exceeds ambient pressure, as in carbonated beverages or still liquids in an aircraft cargo hold, the inner lip will be subject to a pressure differential across it in contact with the mouth throat of the bottle. In both cases, the survey creates 10 an additional seal with the neck of the bottle.

To open the bottle, the cap is unscrewed. The the edge 41 untergreifenden tongues hold the Antimanipulationsband to the bottle, so that only a short Abschraubbewegung the cap is needed, the compounds 3 to break at the break line. Accordingly, any anti-tampering attempt can be readily detected by inspection of the cap prior to purchase if the band is separate from the cap.

Claims (2)

Plastic material cap ( 1 ) for closing a container, the cap comprising: a top and a side wall; Integrally formed on the upper part on the inside thereof ( 10 . 12 . 13 ) for sealing the cap to the container; • means on the side wall for holding the cap ( 1 ) in sealing arrangement with the container; An anti-rip band which is breakably connected to the side wall, the band comprising: a plurality of upwardly directed tongues; 21 ) on the belt for gripping an edge on the container during assembly of the cap ( 1 ) are resiliently secured to the container; and • between the tongues ( 20 ) and interconnecting them ( 20 ); characterized in that between the tongues ( 20 ) and interconnecting them ( 20 ) Are V-shaped folded means extending from the tongues ( 21 ) extend upward and radially outward; • that on the radial outer surfaces of the tongues ( 21 ) Ribs ( 22 ) for limiting the radial movement of the tongues ( 21 ) are provided when assembling the cap with the container; and that on the inside of the side wall a bead ( 23 ) to interact with the ribs ( 22 ) while limiting the radial movement of the tongues ( 21 ) is provided. Plastic material cap ( 1 ) as claimed in claim 1, wherein the retaining means comprise a complementary flight ( 40 ) cooperating on the container ( 40 ) in the cap ( 1 ).