DE2010942A1 - Bottle cap with dry substance chamber - Google Patents

Description

Bottle cap with dry matter chamber In many liquid preparations The shelf life of the ingredients leaves something to be desired, especially often when when mixtures of different substances are present. Are in dry, solid form however, such substances or mixtures are generally much more stable. One has therefore already tried to separate at least the sensitive substances from the liquid preparation in solid form and the mixture just before the actual use.

So it is z. B. known, the liquid components of a preparation in to accommodate a glass bottle. Located in an enclosed plastic container Then the remaining sensitive active ingredients in the dried state. Before the To use this device, the bottle cap and the plastic container must be removed can be emptied into the bottle so that the dry active ingredients can dissolve it has various disadvantages when two containers are required at a time are.

It has now been found that there is a particularly advantageous solution the problem then achieved when you close the bottle itself with a chamber that contains those dry constituents in solid form that just before use should be added. During the closure Sitting on the bottle, the chamber can be opened by a special device in the way be opened so that the dry ingredients into the liquid-filled The bottle falls and can be released by simply shaking it.

The subject of the invention is thus a bottle closure with a dry substance chamber, which is characterized in that the closure with at least one cavity designed dry matter chamber is provided, the bottom at least partially by a push-through film and on top by an elastically deformable one, according to outside domed lid is limited, the inside of the domed lid is provided with a protruding into the cavity pin, the length of which the distance between lid and foil is only slightly below.

In the drawings are preferred embodiments of the invention Bottle cap shown. With (i) the elastically deformable, outwardly curved cover denotes that the dry matter chamber (5) upwards limited. The pin is marked with (2), while (3) the one carrying the thread Represents part of the bottle cap.

In these preferred embodiments, (4) denotes the thread, with (5) the cavity that receives the dry matter (7). (6) is the pushable one Foil covering the cavity (5) for the dry matter (7). down, d. H. against delimits the contents of the bottle. (8) are the parts inside the bottle cap, which close the chamber (5) next to the film (6). (9) is a grid that is just a precaution can also be attached to catch any falling pieces of film. It runs parallel to the foil (6).

Figure I shows a view of the entire closure, Figure II is a cross section through the closure before use, while Figure III a Cross-section through the bottle cap after emptying the dry matter chamber represents. Figures IV and V are partial sections in cross section, the special Demonstrate configurations of the pin (2) and the film to be pierced (6). In Figure IV (2) is a solid mandrel, inFigur V is a cylindrical hollow body: The Figures VI and VII, each also showing the bottle cap in cross section show, show pins (2), which are designed as a hollow body. The foil (6) can an integral part of the bottle closure in these two embodiments be.

Finally, FIG. VI-II is a view of the bottle closure from below, from which the optionally additionally arranged grille (9) can be seen. In Figure IX, the grid (9) is designed as a cross.

The arched elastic upper part (1) of the bottle stopper is pressed down with finger pressure when in use. This pushes the pin (2) against the separation membrane (6), which is destroyed and thereby the escape of the Allow dry matter in the liquid-filled bottle underneath. It has proven to be useful to set the pin (2) eccentrically with respect to the Arched cover (1) to be arranged, since in this case also a pushing through of the Foil (6) is possible with only a slight curvature of the lid (1). Furthermore it can It is advisable to bevel the end of the pin (2) facing the foil or to point, so that the film (6) is broken with certainty, even if it is a stronger plastic film. The pin (2) itself can be advantageous be designed as a hollow body, but also as a solid mandrel. He's purposefully out made of the same material like the lid (1) of the bottle cap, since the closure is normally manufactured from plastic by injection molding.

The chamber (5) itself can be in any desired position within the closure Shape can be designed, since only parts in the interior of the bottle cap can be designed as a drying chamber.

In principle it is of course also possible in a bottle cap to attach several independent chambers.

Of course, several pins can also be provided here, which pierce the associated membranes. Preferably, however, one is no longer arrange as two or three such pins. However, producing such would Multiple chambers make manufacturing considerably more expensive.

On the inside of the elastic and slightly curved outwards Closure surface (1) is attached the pin (2) through which the mechanical Pressure from the upper part of the closure (1) is transferred to the film (6). The pen (2) can be designed in very different ways, it just has to be with certainty and without Difficulties can pierce the film (6) and thus sufficient stability own. According to a special embodiment, the pin (2) can also be equipped with a Angle of inclination up to 400 can be attached to the closure surface (1).

An eccentric arrangement of the pin (2) also has, as already mentioned advantages.

As a sealing film (6) of the drying chamber (5), for. B. composite or metal plastic sheets can be used. Their thickness must be so that it can be pierced with certainty by the pin (2). Because of the cheap Water vapor impermeability it is particularly beneficial to have a with plastic, e.g. B. polyethylene, coated aluminum foil to use, The The partition (6) between the chamber and the contents of the bottle can, however, also be an integral part of the lock itself.

In this case it is expedient in the context of injection molding production and is therefore made of plastic.

If the film (6) is attached separately, it can be used as required attached to the walls of the bottle cap according to the usual methods will. Heat sealing is preferred. According to the drawings in the figures II, III, VI and VII illustrated embodiments is only part of the drying chamber covered by the film (6), while the separation between bottle contents and Dry matter chamber also through corresponding webs or parts (8) of the bottle closure is achieved.

The grille (9) can be added if it is prevented with certainty should be, the possibly detaching parts of the film (6) fall down. Besides Such a grid (9) optically hides the perforated film, which is unsightly can work.

That. Lattice (is easiest to use in. Injection molding and / or is attached to the parts (8) of the closure.

If such a grid (9) is attached, the Web (8) extended downwards, since it is useful between the grid (95) and the film (6) the resulting space should have at least 1/4 of the volume of the chamber (5). Of the The distance between the film (6) and the grille (9) should be at least 5 mm. The mesh size of the grid (9) must of course be matched to the grain size of the Dry substance (7) that unhindered passage is guaranteed.

The introduction of the dry substances (7), which are normally in powder or in the form of granules, into the dry matter chamber (5) either of above or below.

Meaning filling from below is preferred if the chamber (5) is retrofitted is closed by a film (6) (Fig. II, III, IV and V). On the other hand, is that Foil (6) is part of the bottle closure from the start and is then filled expediently from above through an opening in the lid (1) of the flap closure, the is then subsequently closed again in the usual manner, or expediently in that the cover (1) is only put on at a later date (Fig.

VI and VII).

The new bottle cap is preferably made of plastics, all materials can be used that meet the requirements correspond. In particular, sufficient elasticity must be ensured. Exemplary be high and low pressure polyethylene, polypropylene, polyacetals, polystyrene, polymethacrylic acid esters, Called polyvinyl chloride and polycarbonates. The new lock can also colored and / or flavored.

There is a particular advantage in the design of the bottle closure as a screw cap. However, it is also possible to use plug-in closures (drip cap stoppers) to produce with the dry matter chamber according to the invention. Also the mouth of the bottle overlapping closure, e.g. B. a snap lock is technically feasible.

The new closure is intended mainly for pharmaceutical preparations The bottles on which the new cap can be placed can of course contain a powder instead of a liquid Storage is incompatible with the contents of the chamber in the closure.

Claims (10)

Expectations 1. Bottle closure with dry substance chamber, characterized in that that the closure with at least one designed as a cavity dry substance chamber (5) is provided, the below-. at least partially through a push-through film (6) and at the top by an elastically deformable, outwardly curved cover (1) is limited, the inside of the domed lid (1) with one in the cavity (5) protruding pin (2) is provided, the length of which is the distance between the cover (1) and film (6) only slightly below. 2. Bottle closure according to claim 1, characterized in that the closure is a screw closure. 3. Bottle closure according to claims 1 and 2; characterized, that the pin (2) is arranged eccentrically with respect to the domed cover (1). 4. Bottle closure according to claims 1-3, characterized in that that the slide. (6) facing end of the pin (2) beveled or pointed is. 5. Bottle closure according to claims 1 - 4, characterized in that that the entire closure consists of elastic, deformable plastic. 6. Bottle closure according to claims 1-5, characterized in that that. the push-through film (6) is optionally coated with plastic Aluminum foil is 7. Bottle closure according to claims 1 - 6, characterized in that the pin (2) is designed as a hollow body. 8. Bottle closure according to claims 1-7, characterized in that that a grid (9) is also attached below the film (6). 9. Bottle closure according to claim 8, characterized in that the grid (9) runs parallel to the film (6) at a minimum distance of 5 mm. 10. Bottle closure according to claims 8 and 9, characterized in that that between the film (6) and the grid (9) in the interior of the closure (3) Space has at least 1/4 of the volume of the chamber (5). L e r s e i t e