CN1026309C

CN1026309C - Closure with tamper evident band

Info

Publication number: CN1026309C
Application number: CN 92100450
Authority: CN
Inventors: R·M·德鲁伊特; S·W·史蒂文斯; C·坦西
Original assignee: Precision Valve Australia Pty Ltd
Current assignee: Closing and Packaging Service Co., Ltd.
Priority date: 1991-12-20
Filing date: 1992-01-23
Publication date: 1994-10-26
Anticipated expiration: 2007-01-23
Also published as: CN1073408A

Abstract

A seal cover (12) is provided particularly for a container with a threaded top such as carbonated beverage container, and has an open identification tape (1) with an inner rib tape (2). When the seal cover is assembled on the container, the inner rib tape conjugates with an outward-protruding edge of the container, so that the identification tape is kept on the container or is obviously damaged when the seal cover is removed. The inner free surface of the identification tape comprises a plurality of longitudinally-opposite tear-shaped protrusions (3), which extend radially from the identification tape to the outer surface of the neck of the container when the seal cover is assembled to the container. A fragile zone (6) is formed by the parts of the identification tape among the protrusions, and another fragile zone (7) is formed by a ring part of the identification tape between the rib tape and the region where the protrusions are positioned.

Description

Closure with tamper evident band

The present invention relates to be used to have the capping of the container of outside thread neck, particularly relate to being provided with and open the capping of differentiating band.

Food, beverage, medicine, the maker of toothpaste etc. is concerned about especially guarantees that the product that they are invested in market can not opened by others carelessly before the ultimate consumer of goods opens.What become routine for this purpose is to be added with device in the capping of these goods, and it can point out whether capping was unlocked before buying.Have at container under the situation of outside thread neck, be provided with usually to open in capping and differentiate band, it is incorporated under the retardance flange of container neck.Open and differentiate that band links to each other with the dependent skirt portion that forms a capping part by the tooth raise of many fragilities.When being contained in capping on the container, differentiate that band forces by the retardance flange; And when capping was unscrewed from container, the tooth raise was by tear fracture, and it is following and capping just upwards moves apart the neck of container to differentiate that at this moment band is delayed at flange.Though this unlatching differentiates that band is accepted extensively, yet has insoluble equilibrium problem between the requirement of two mutual contradictions.On the one hand, must at high speed capping be contained on the container and tear fracture tooth raise by mistake not, or tear fracture damages and differentiate band itself, or influence nocuously between capping and the container and seal.On the other hand, differentiate that band must enough be securely fixed under the flange, and the tooth raise and/or differentiate band must be enough tear fracture easily, can destroy the tooth raise and/or differentiate that band just can take off capping from container.

Another problem is that a unwarranted people may be in order to make dirty or to replace thing in the container and load onto capping again again and attempt and do not destroying under the situation of differentiating band or tooth raise capping and differentiating that band takes off.He can differentiate between the container neck of band and installation capping by a chip device wedging.Then this chip device is outwards maintained an equal level and differentiate the internal diameter of band, make it can pass through the retardance flange of container to swell.In this process, usually chip device is wedged along the periphery of differentiating sheet, thus the loosening gradually band of differentiating, the part that makes its peripheral continuous elongation is by blocking flange.

Structure of the present invention is opened the capping of differentiating band for the public provides being provided with of another kind of form.

The invention reside in provides a kind of unlatching that is made of one with closing flaps to differentiate band, this discriminating band comprises: cylindrical skirt with capping roughly aligns is essentially columniform base portion, a plurality of frangible bridge works that aforementioned body part and above-mentioned skirt section are coupled together; A continuous substantially rib band that radially inwardly stretches and provide a periphery to combine from the aforementioned body part with the flange lower end that centers on container neck; A plurality of aforementioned body inner periphery that are positioned at radially inwardly stretch and have a projection that vertically aligns the axis of cylinder body part; One along first vulnerable areas that extends in the crown center of above-mentioned rib band and capping on every side of differentiating band; Second vulnerable areas between adjacent above-mentioned projection or a plurality of tender spots; One extends in above-mentioned projection and the 3rd middle vulnerable areas of above-mentioned rib band around the discriminating band.

Above-mentioned projection can prevent that chip device is at an easy rate along wedging the inside of differentiating band all around.

First vulnerable areas allows rib band distending when capping is installed so that the flange by container.

An effectiveness of the 3rd vulnerable areas is, if differentiate that the free edge bottom of band is prized from container, will produce warpage rather than first vulnerable areas is destroyed around the 3rd vulnerable areas, and the rib band just can not levered up from the container flange lower end like this.

An effectiveness of second vulnerable areas is, if there is significant external force to put on the free end of differentiating band, the tender spots between the projection will be twisted or lost efficacy, and has stayed the remarkable visible marks of being prized.

Best, differentiate that band also comprises a plurality of reinforced ribs that are positioned at the base portion outside face, each reinforced rib is peripheral with a corresponding protruding freedom that extends longitudinally to the discriminating band relative and edge discriminating band, thereby but for when producing discriminating band and capping integral body, providing a pushing surface with this part from the mould taking-up.

Be installed on when having the container neck that block flange will being provided with capping that open to differentiate band, along with capping is screwed into the screw thread of neck fast, the tooth raise may block flange and rupture because of differentiating that band blocks.If produce this situation, container must be taken away from the filling line, rise bad capping and differentiate band, adorn again one new.This incident is for loading line has very big destructive effect at a high speed, and this Production Line rate is 300 of per minutes or more.In the capping of routine, when being contained in capping on the container, the tooth raise is delivered to all power basically and differentiates band from capping.

The tooth raise preferably along capping around evenly spaced apart, relatively be arranged to two groups on the diameter but also can be chosen in.Every group can occupy 1/4th to 1/3rd of cover periphery, and between each group each occupy at interval this periphery 1/4th to sixth.Every group of tooth raise is made up of 4 to 10 tooth raises that distribute with equal intervals in this group.

Each tooth raise in each group can have an axis that is parallel to the capping axis.But preferably the axis of each tooth raise particularly preferably is inclined to from the side and looks squarely with respect to the axis tilt of capping, and the upper end of tooth raise is tilted to the left with respect to its lower end.This desirable especially structure is based on such fact: most of screw threads are tightened along clockwise direction.This desirable direction of tilt of tooth raise allows the bending of tooth raise when capping is screwed into container.When being installed, capping differentiates that then the upper end of band just sustains the lower end of capping dependent skirt portion.So just stablized and differentiated band and make the possibility reduction of differentiating that band or tooth raise are torn when mounted or twisted.This desirable direction of tilt of tooth raise means conversely speaking,, and when capping is unscrewed, the tooth raise is straightened, this just can make the power that trends towards tearing the tooth raise concentrate on each tooth raise with differentiate band and with the point of connection of closure skirt.

The set rib band that combines with retardance flange on the container is differentiating that on the band circumference can be continuous or discontinuous.

Preferably be provided with in the capping device hermetically with container combination to prevent its leakage.Any in a large amount of known various hermetically-sealed constructions all can be used for capping of the present invention.These hermetically-sealed constructions comprise sealing ribs or the flange that fuses, the filling or the pad that flows.

Referring now to accompanying drawing desirable embodiment of the present invention is described, in the accompanying drawing:

Fig. 1 is the following end elevation that band is differentiated in unlatching of the present invention;

Fig. 2 is the lateral plan of discriminating band shown in Figure 1;

Fig. 3 is along the cutaway view of differentiating the C-C line of band shown in Fig. 1 and 2;

Fig. 4 comprises the lateral plan of differentiating a complete capping of band shown in Fig. 1-3.

Open to differentiate and to be with 1 to comprise a substantial cylindrical base portion 10, it is axially short relatively, and the tooth raise 11 by fragility is connected with the main body of capping 12.Capping 12, frangible tooth raise 11 and opening are differentiated and are with 1 usefulness for example polyethylene or polypropylene material are made an integral body by plastic-blasting method.The inboard of capping 12 is made screw thread (not shown screw thread) usually, is used for being connected with the container of usually making with glass or plastic material such as polyethylene terephthalate.

The container that capping 12 is attached thereto comprises that one is close under the container threads, is generally the continuous flange of annular, to form a radially outer bossing.Discriminating comprises a continuous rib band 2 around its inside face with 1, in case its geomery can provide a capping 12 correctly and fully to cover the radially inner projection that combines with it in back on the container under container flange.

Under the rib band 2 of base portion 10 inside faces, being one has many structures of protruding 3, and each protruding radial section is a tear-drop shaped, and as shown in Figure 3, it is roughly consistent with 1 cylindrical shaft with discriminating that each is raised with a major axis.Projection 3 inwardly extends to enough near with the exterior of container at least from base portion 10 inner surface radial directions.These projectioies are at first radially inwardly wedged the base portion of differentiating with 1 10 in order to prevent with a device, and continuously along differentiating that the periphery with 1 moves to scheme that rib band 2 was prized the container flange that cooperates with it.

Frangible tooth raise 11 forms first vulnerable areas 5, its allow when being installed in capping on the container rib on diametric(al) distending to cross the flange of container.

Second vulnerable areas or a plurality of tender spots 6 are present between each adjacent protrusion.This is by base portion 10 is obtained in that these regional sections are very thin.This just for projection second kind of usefulness is provided, Here it is, if some protruding 3 outwards levered up, will produce distortion and cause that usually at least one second adjacent tender spots breaks.

In the middle of tear-drop shaped projection 3 and continuous rib band 2, there is a thin section to form one the 3rd vulnerable areas 7 by making base portion 10.The thin section of this of the 3rd vulnerable areas has such usefulness, if people attempts by levering up many protruding 3 and the rib band is levered up, he can only change to the bottom of differentiating band near the 3rd vulnerable areas, and can not be bent near the vulnerable areas 5 of tooth raise 11.

With 1 outside face many reinforced ribs 4 are arranged along discriminating, each reinforced rib is corresponding to a projection 3, and its position is relative across the wall of base portion 10 with corresponding projection 3.Each reinforced rib 4 extends to discriminating from a zone of axially going up on the scope of projection 3 and is with free-ended zone.Reinforced rib 4 allows enough axial forces to put on the free end of capping, so that successfully capping 12 is penetrated from the core rod of producing with mould.Although reinforced rib 4 is enough to reach this purpose, its section thickness is still limited, so that do not disturb the 3rd above-mentioned vulnerable areas.Simultaneously each reinforced rib 4 is not connected with adjacent reinforced rib 4 yet, so just can not disturb the second above-mentioned vulnerable areas.

The technical personnel that should be appreciated that the industry can be made many variations and/or modification to embodiments of the invention and do not broken away from the spirit and scope of the present invention.Therefore, the foregoing description all should be considered to suggestive and nonrestrictive in all respects.

Claims

1, band (1) is differentiated in a kind of unlatching of an integral part as capping (12), and this discriminatings is with and is comprised:

Cylindrical skirt with capping roughly aligns is essentially cylindrical body portion (10), a plurality of frangible tooth raises (11) that aforementioned body part (10) and above-mentioned skirt section are coupled together;

A rib band (2) that radially inwardly stretches and provide a periphery to combine from aforementioned body part (10) with the flange lower end that centers on container neck;

A plurality of aforementioned body part (10) inner periphery that are positioned at radially inwardly stretch and have a projection (3) that vertically aligns the axis of cylindrical body portion (10);

It is characterized in that this discriminating band also comprises:

One along first vulnerable areas (5) that extends in the centre of above-mentioned rib band (2) and capping on every side of differentiating band;

Second vulnerable areas (6) between adjacent above-mentioned projection (3) or a plurality of tender spots (6);

One extends in above-mentioned projection (3) and middle the 3rd vulnerable areas (7) of above-mentioned rib band (2) around discriminating band (1).

2, band is differentiated in unlatching as claimed in claim 1, it is characterized in that each of above-mentioned frangible tooth raise (11) all has a longitudinal axis bevelled longitudinal axis with same angle and capping (12).

3, band is differentiated in unlatching as claimed in claim 1, it is characterized in that, it also comprises a plurality of reinforced ribs of uniformly-spaced arranging around the outside face of aforementioned body (10) (4), each reinforced rib (4) is essentially longitudinal, and a major axis that is parallel to the longitudinal axis of above-mentioned capping (12) is arranged.

4, band is differentiated in unlatching as claimed in claim 3, it is characterized in that, above-mentioned reinforced rib (4) extends to the annular arrangement free end away from the aforementioned body part (10) in capping (12) skirt section basically.

5, band is differentiated in unlatching as claimed in claim 4, it is characterized in that each above-mentioned reinforced rib (4) aligns a corresponding above-mentioned projection (3) approximately diametrically.

6, band is differentiated in unlatching as claimed in claim 5, it is characterized in that, press close to most an end in capping (12) skirt section as projection, the top of each above-mentioned projection (3) is positioned in the capping vertically presses close to locating bottom of above-mentioned continuous rib band (2), and this end is the end of above-mentioned rib band (2) away from closure skirt.

7, differentiate band as claim 1 or 5 described unlatchings, it is characterized in that the form of above-mentioned second vulnerable areas (6) or a plurality of tender spots (6) is that the aforementioned body part (10) in the zone between adjacent protrusion (3) is thin-walled.

8, differentiate band as claim 1 or 5 described unlatchings, it is characterized in that above-mentioned first vulnerable areas (5) is formed by above-mentioned frangible tooth bar (11).

9, differentiate band as claim 1 or 5 described unlatchings, it is characterized in that the section on each its radial direction of above-mentioned projection (3) is a tear-drop shaped.

10, band is differentiated in unlatching as claimed in claim 4, it is characterized in that, above-mentioned reinforced rib (4) has enough rigidity to allow said vesse capping (12) partly to extrude from the internal mold of injection mould after being shaped with molding apparatus.

11, differentiate band as claim 1 or 6 described unlatchings, it is characterized in that, above-mentioned projection (3) radially inwardly stretches from aforementioned body part (10), thereby above-mentioned projection contacts or almost contact the column part that the said vesse neck is pressed close to above-mentioned projection (3) when the said vesse capping is contained in the said vesse neck.

12, band is differentiated in unlatching as claimed in claim 1, it is characterized in that, said vesse capping (12) thus be contained in the opening of capping container in neck on the container neck, and above-mentioned rib band (2) combines with it under the flange that stretches around the said vesse neck, and above-mentioned projection (3) extends radially inwardly against the outside face of said vesse neck.