SK283598B6 - Screw-type cap with safety and guarantee band - Google Patents

Abstract

A safety band (3) of a sealing unit (1) has two retaining noses (12a, 12b; 13a, 13b) arranged in diagonally facing pairs. The retaining noses (12a, 12b; 13a, 13b) standing out on the clear opening of the safety band (3) are axially displaced. When the bottle (17) is closed, the pair of retaining noses (12a, 12b) is first split and then glides on the retaining rib (15). After that the retaining noses (13a, 13b) that are displaced 90° are split and also glide beneath the retaining rib (15). When the bottle is opened the retaining noses (13a, 13b) are first retained on the retaining rib (15) and the connecting webs (9) to the screw-type cap (2) are broken. Afterwards, the remaining webs (9) are also broken once the axially offset retaining noses (12a, 12b) are obstructed by the retaining rib (15).

Description

Technical field

Security and protective strips are now part of most screw caps to mark the initial opening of the bottle and protect its contents from being destroyed by incompetent persons. The security strips consist of a cylindrical casing part connected to the lower edge of the screw cap casing by means of connecting tissues. The strips may include fragile areas on their circumferences that tear upon first opening. The stripe areas remain connected to the screw cap. They can be manufactured in one piece and remain after the first opening under the gripping plastic strip, located axially below the thread on the neck of the bottle. Along with the conventional safety and protective strips, which are distributed either at the lower edge or on the inner surface of the perimeter and extended into the final cross-section, a plurality of cam slips are also provided along the perimeter. As the bottle cap is rotated, these catch chutes slide along the plastic strips and lock under them. When opening the screw cap, the security strip is caught by a catch slip, which additionally comprises a gripping surface and connecting tissues, between the screw cap and the gap of the protective strip. When rotating or placing the cap of the safety cap on the bottle, problems may arise due to the resistance that occurs when the gripping plastic strip passes through the slip and the protective strip, if made obliquely, may be compressed or snapped between the bottle neck and the screw cap housing. The security strip or fasteners of the closure may also tear upon closure. A security strip with such a feature loses its purpose. In a high-volume bottling plant, an error of the above type can lead to the entire plant being stopped.

However, also when opening the lid, the known security strips often tear only on one side or are partially pushed away from the gripping plastic strip. On re-closing, the security strip snaps between the bottle neck and the screw cap package, so that the hermetic seal is not possible unless the security strip has been previously pulled by hand or pushed backwards.

BACKGROUND OF THE INVENTION

The purpose of the present invention is to provide a safety strip that can be placed on the bottle without problems in the case of high-volume bottling devices and which perfectly separates from the screw closure while opening the bottle while remaining behind under the grip plastic strip on the closure neck; in the case of return bottles tears and remains attached to the screw cap.

This purpose is achieved by a safety and security strip according to the features described in claim 1. First

SUMMARY OF THE INVENTION

The retaining chutes arranged axially, displaced on the closure act considerably lower, breaking down the pressures on the safety strip and preventing its premature deterioration.

The two retaining chutes, which are arranged in pairs and axially positioned one on top of the other, slide one after the other in the same manner over the gripping plastic strip which makes the security strip difficult to tear due to oval deformation and a slight axial pressure is required, to allow passage through the catch chute. When opening the bottle, the two above-mentioned retaining chutes are held by the retaining plastic strips initially at the back, and here only the tensile pressures, preferably formed transversely of the retaining plastic strips, which tear therethrough, occur on the connecting tissues. Once the first tie tissues have been ruptured, adjacent catch slips reach the catch plastic strips and tear through adjacent tie tissues. In this way, the security strip is prevented from being inclined and, when formed in one piece, always remains at the back below the plastic retaining strip on the neck of the bottle. The security strip with a predefined break position and connection to the screw cap remains connected to the latter.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is hereinafter described by way of example. FIG. 1, which shows a cross-section through a screw cap with a safety and protective strip as well as the neck of the plastic bottle located at the bottom. Fig. 2 shows a cross-section along the line II-II, between the lower edge of the screw cap package and the upper edge of the security strip. In FIG. 3 shows a cross-section along the line II-II, through the security strip in FIG. 1, during the screwing process itself. Fig. 4 shows a perspective view of a closure unit in accordance with FIG. 1-3. Fig. 5 illustrates a cross-section along the line III-III, between the lower edge of the screw cap package and the upper edge of the security strip in FIG. 6; FIG. 6 is a perspective view of another embodiment of the invention with a bonded security strip.

DETAILED DESCRIPTION OF THE INVENTION

Fig. 1 and 2, with reference to number 1, schematically illustrate a closure unit consisting of a screw closure 2 and a security strip 3. The closure unit consists of a thermoplastic and is made by injection molding. The screw closure 2 comprises a base 4 on which a sealing plastic strip 5 lying coaxially to the symmetry of the A axis can be mounted. The base 4 is supplied with a cover 6, which bears on its inner side, preferably in portions, distributive thread windings 7. 2 is generally known and not described in detail herein. The security and protective strip 3 is attached to the lower edge 8 of the screw cap cover 6 by very thin tissues 9 with a thickness of several tens of millimeters. The length of the connective tissues 9 or the distance between the upper edge 10 of the security strip is very small and varies several tens of millimeters.

On the inside of the security strip package 11, according to the illustrated example, two pairs of catch chutes 12a, 12b, 13a, 13b are formed. The grip chutes 12a and 12b, as well as the grip chutes 13a and 13b, which lie diagonally opposite, are spaced at an angle of approximately 90 [deg.] And are axial, i. j. having regard to the axial extension of the security strip 3, distributed in a quantity and. As a result, the chutes 12a and 12b lie closer to the lower edge 14 of the security strip 3 than the chutes 13a and 13b in amounts a. Preferably, the distance a is less than the height b of the peripheral gripping plastic strips 15 on the neck 16 of the bottle 17, manufactured e.g. from PET. Threaded sections 18 protruding outwardly from the neck of the bottle 16 are visible at the neck 16 of the bottles 7, and it is contemplated that these will collide with the corresponding threaded sections 7 on the inside of the screw cap package 6.

The tie fabrics 9 lie, retaining the circumferential direction, between the retaining plastic strips 12a, 12b; 13a, 13b. As an alternative to the tissues 9, the screw closure together with the security strip 3 can hold together e.g. connections from thin film.

The operation of the security strip 3 according to the first embodiment is subsequently explained by means of Figure 3.

When closing the bottle 17 with the closure unit 1, the latter is placed from the top axially on the neck of the bottle 16 and rotates clockwise when viewed from above. Thus, the threaded sections 7 on the screw cap 2 first come into contact with the threaded sections 18 on the neck of the bottle 16. On further rotation and by this axial displacement of the capping unit 1, the two grip chutes 12a and 12b are compressed radially outwards. 13a and 13b by displacing them at an angle of approximately 90 ° inward. Thus, it is assumed that the security strip 3 has an oval shape and stretches only extremely slightly, within its elasticity limit. Only the two top points Sj detention slips 12a and 12b and the apex S ₂ Detention plastic strip 15 skízli one over the other, are two retaining chutes 12a and 12b again retracted radially inwardly, whereas at the moment the two collecting chutes 13a and 13b arranged radially, they also come into contact with the gripping plastic strip 15 by displacement and, likewise to the other two plastic strips, are pushed radially outwards. In this way, the cross-section of the security strip 3 again takes an oval shape. After only a short time, two catch chutes 13a and 13b also slide over the catch plastic strip 15 and are subsequently located there, as well as two catch chutes 12a and 12b in the cylindrical region 20 of the bottle neck. When closing the bottle 16, the thin tie fabrics 9 are only very lightly mechanically loaded, because by means of axial pressure the security strip 3 with its upper edge 10 carried on the lower edge 8 of the package and the tie fabrics 9 is only compressed at the same time.

When opening the screw closure, the two opposing gripper 13a and 13b first come into contact with the gripping plastic stripe 15 on the neck of the bottle 16. Since neither the gripping surfaces 13a and 13b nor the gripping plastic strips 15 are joined together and allow for pushing away of the two parts as in screwing or closing, but the retaining plastic strip 15 does not move beyond the catch chute 13a and 13b, finally holding back and the tie tissues 9 lying laterally on the catch chutes 13a and 13b tear into two parts. After a further twisting of, for example, a quarter or a half, the retaining chutes 12a and 12b become the support members of the retaining plastic strip 15. Due to the already torn connecting tissues 9, the safety strip is deformed again oval and by these pulls the retaining chutes 12a, 12b join under the retaining plastic strip. In this way, the remaining connecting tissues 9 also tear. The security strip 3 remains at this point in the region 20 below the plastic retaining strip 15. The bottle cap 17 can now be screwed again onto the neck of the bottle 16 without the security strip 3 torn off.

5 and 6, the security strip 3 in the region (X) is non-detachably connected to the screw cap cover 6. The remaining peripheral region of the security strip is detachably attached to the lower edge 10 by thin connecting tissues 9. The predefined breaking region 22 in the form of slits The thinner line 12a adjoins the predefined fracture region 22 below the joint region X. Preferably, a single or double retainer 12b is formed directly opposite the joint region X. lying close to each other. Displaced by 90 ° to this region, there are two further catch chutes 13a and 13b. The gripping chutes 13a or 13b and 13b lie axially further away from the lower edge 14 of the security strip 3 and thus become load-bearing together with the gripping plastic strip 15 rather than the gripping chutes 12a and 12b. The webs 9, laterally positioned to the chutes 13a and 13b, as well as the predefined fracture region 22, are therefore refracted rather than remaining.

Claims (7)

L Screw cap for bottle, with a safety and protective strip, the annularly shaped safety strip being attached to the screw cap packaging by the connective tissues on its inner surface and holding catch slips that are extended into a transverse region, characterized in that the first pair of catch slips (13a, 13b) lying diagonally with respect to each other and at least one further catch chute (12a) displaced by 90 ° and axially displaced by part (a) are disposed on the security strip (3). Screw cap according to claim 1, characterized in that at least two pairs of slip chutes (12a, 12b; 13a, 13b) are arranged on the security strip (3), which lie diagonally opposite and are axially displaced towards each other. Screw cap according to claims 1 and 2, characterized in that the axial displacement (a) of the grip chutes (12a, 12b; 13a, 13b) is less than the height (b) of the grip plastic band (15) on the neck (16). Screw cap according to either of Claims 1 and 3, characterized in that the connecting tissues (9) mounted in the circumferential direction lie between the retaining chutes (12a, 12b; 13a, 13b). Screw cap according to one of claims 1 and 4, characterized in that in each case two connecting tissues (9) lie between the grip chutes (12a, 12b; 13a, 13b). Screw cap according to either of Claims 1 and 5, characterized in that the security strip (3) consists of a rigid, unbreakable connection area (X) with the screw cap housing (6) and a predefined breaking area (22). ). Screw cap according to claim 6, characterized in that one of the grip chutes (12b) is arranged diagonally with respect to the connection area (X). 3 drawings