Container closure system

Abstract

The container system having a container and a screw-on cap that may that may be screwed onto the container and having an olive that is molded onto the screw-on cap and that is positioned against an annular edge area of the container opening is characterized in that the olive is molded onto the screw-on cap such that it fits against the exterior annular edge area of the container in a sealing manner, and in that the outer annular edge area has a continuously smooth surfaces.

Claims

1. A container closure system comprises a container having an opening with an exterior annular edge area, and a screw-on cap that may be screwed onto the container, the cap having an olive that is molded onto the screw-on cap and that is configured to be positioned against the annular edge area of the container opening, wherein the olive is molded onto the screw-on cap at such a position that it fits against the exterior annular edge area of the container in a sealing manner, and the exterior annular edge area has a continuously smooth surface without seams; wherein the container is manufactured in the extrusion blow molding process or injection blow molding process comprising two blow mold halves such that no mold release for the two blow mold halves occurs at the exterior annular edge area of the container.

2. The container closure system according to claim 1, wherein the container opening is sealed by a removable film that is welded or glued to the outer edge of the container opening and the outer diameter of the film is smaller than the interior diameter of the olive at the same height.

3. The container closure system according to claim 1, wherein a blocking element having a suspension device is attached to the interior wall of the container neck such that the blocking element is arranged beneath the container neck, and in that the suspension device has holes that are smaller than the diameter of the container neck.

4. The container closure system according to claim 3, wherein the container is in the shape of a bottle having bottle neck, and in that the blocking element and the suspension device have an equal exterior diameter that is essentially equal to the interior diameter of the bottle neck.

5. The container closure system according to claim 3, wherein the blocking element is a desiccant chamber.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a center longitudinal section through a container closure system;

(2) FIG. 2 is an enlarged depiction of detail B in FIG. 1;

(3) FIG. 3 is an enlarged depiction of detail C in FIG. 1;

(4) FIG. 4a is a perspective elevation of a dispensing aid;

(5) FIG. 4b is a partially cut-away side view of the dispensing aid;

(6) FIG. 5a is an elevation of a part of a blow mold;

(7) FIG. 5b is a section through the part of the blow mold;

(8) FIG. 6 is an enlarged depiction of detail A in FIG. 5b.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

(9) A bottle-shaped container 1 includes a container neck 2 having a male thread 3 onto which is screwed a screw-on cap 4 having a female thread 5. A child-proof cap 6 is snapped onto the screw-on cap 4, and as depicted is seated freely rotatable on the screw-on cap 4. If the child-proof cap 6 is pressed downward against the force of elastic bars 7, teeth 8, 9 on the screw-on cap 4 and on the bottom of the child-proof cap 6 engage in one another such that the screw-on cap 4 may be rotated.

(10) A dispensing aid 10 includes a blocking element 11 that includes an upper conical closing wall 12 and is embodied as a chamber filled with desiccant 13. The lower end of the chamber is sealed by a cardboard disk 14.

(11) The blocking element 11 is connected via four parallel bars 15 to an attaching ring 16, wherein the bars 15 are spaced evenly from one another circumferentially. The ring 16 has four radially inward recesses 17 that are likewise spaced evenly from one another and that permit the ring 16 to be compressed radially.

(12) The ring 16 is snapped into an inner annular groove 18 in the bottle neck 2 and retains the blocking element 11 below the bottle neck. The bottle neck 2 and the bars 15 delimit constricted holes 19 for individual capsules.

(13) Prior to the container closure system being used, the container opening 20 is sealed using an aluminum film 21 that is attached to the upper edge 22 of the container neck 2 using induction welding.

(14) An olive 23 is molded onto the bottom of the screw-cap 4 at a radially exterior position such that the radially inward bulge of its olive is positioned immediately against the exterior annular edge area 24. A small annular gap 25 remains between the exterior edge of the film 21 and the exterior olive 23.

(15) FIG. 5 depicts a blow mandrel 27 that is surrounded by an annular blow mandrel part 28 that includes an annular element 29 that delimits an annular gap 30 between itself and the exterior of the blow mandrel 27. The edge area of the container opening 20 is embodied in this annular gap 30 and thus has smooth continuous surfaces both on its interior and on its exterior. The blow mandrel 27 also has a small annular bulge 31 that is used to embody the annular groove 18 in the interior wall of the container opening.

(16) The blow mold part 28 also includes two radially exterior annular shoulders 32, 33 with which it fits against corresponding annular shoulders of the two blow mold halves 26 and of the blow mandrel 27. When the blow mold halves 26 are closed, another annular shoulder 34 of the blow mandrel is positioned against an associated annular shoulder of the blow mold halves when they are closed.