DE7936381U1 - Plastic stopper for closing wine bottles or the like - Google Patents

Description

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This 8th act, Z, i 5oo9 /? 9 Mr. Rüdiger Kuck, Braekweder Straße 82, M830 Oütereloh

Plastic stoppers for closing wine bottles or the like.

The invention relates to an elastic plastic stopper for closing wine bottles od
Inner part is formed from a cylindrical plug body which is partially open-pored by means of propellant and which is surrounded by an essentially closed cast skin.

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Such known plastic plugs exist in particular made of polyurethane, the granules of which are partially molded during injection molding by means of a propellant under low pressure open-pored plug body is formed, which is sealed airtight by an outer skin,

Such plastic stoppers turn out to be unsuitable for closing wine bottles after a short time, as they a necessary, certain slight exchange of oas for the maturation of the wine between the outside air and that in the air Preventing bottles of closed wine “However, previous users of such stoppers recognized this lack of quality No gas exchange, but only half rejected these stoppers because of the wine or the like in the closed bottle was impaired in its quality "

Basically, however, plastic stoppers have the advantage that they can be mass-produced and thus replace the increasingly rare natural cork.

The object of the invention is to provide a plastic stopper for To train closure of wine bottles to the effect that this despite the airtight outer cast skin formed during manufacture in the injection molding process allows certain necessary gas exchange between the outside air and the interior of the wine bottle and thus contributes to maintaining or increasing a good quality of the wine.

According to the invention, this object is achieved in a plastic stopper of the aforementioned type in that the

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Plastic stoppers on both sides with open ends Pores is equipped.

Open pores of this type provided on the two end faces of the plug can preferably be achieved in this way be that the cast skin on the end faces of the approximately cylinder-shaped plug is removed. This removal can be achieved by cutting off the skin formed on the end faces. On the other hand, according to the invention, it is also possible to insert into the cast skin of the forehead on both sides. Fläehen duren? 8ffenporlgen interior of the plug body to incorporate air ducts connecting with the outside air, for example, to pierce and thus make the cast skin gas-permeable to a small extent.

Such a plastic stopper, which is designed to be elastic due to its internal porosity, shows properties that are not only correspond to the properties of a natural cork, but are even better. Due to the open pores of the plug Its end faces allow gas exchange for the ripening process, just like a natural cork. However, because the plastic plug on its side If the cylinder walls have a dense cast skin, on the one hand the stopper can be more easily pressed into the bottle and also easier to pull out with a corkscrew, aa the casting skin shows a lower coefficient of friction than a rough natural cork.

Such a plastic stopper is tasteless and largely resistant to aging.

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The cast skin shows a favorable Gieitffekt, so daft ripening of the that occurs when pulling a natural note Cork with the plastic stoppers according to the invention " is reduced.

It is also within the scope of the invention, the tool core provided with channel mandrels in such a way that even air channels in the end faces of the injection molding foaming stopper are incorporated "

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Exemplary embodiments of the invention are shown in the drawing. Show it:

Pig. I a longitudinal section through a known one equipped with a closed cast skin Plastic stopper, with open-pored inner core;

Fig. 2 is a longitudinal section through the same plastic stopper with cut end faces on both sides;

Fig. 3 shows a modified plastic plug in

Longitudinal section, in which the two-sided end faces of the cast skin are subsequently underneath Formation of tubules are punctured;

Flg. H a modified plastic stopper in longitudinal section with small gas exchange channels incorporated during injection molding and

Flg. Fig. 5 is a plan view of another modified one Plastic stopper with gaps cut into the cast skin on the face.

An elastic plastic stopper, which is manufactured by injection molding from polyurethane granulate with a suitable propellant, has a plug body Io with largely open pores loa, the volume of which depends on the amount and type of propellant used. This open-pored

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Stopper body Io as a foam body is manufacturing enclosed by a largely gas-tight cast skin 11 which is largely smooth in relation to the plug body and is therefore better in the bottle neck than a natural cork that has no outer skin designed to slide.

In order to make such a known plastic stopper suitable as a closure for wine bottles, according to FIG the lower and the upper end face 12 are cut off by means of a suitable cutting device such as a knife, that the stopper body Io is exposed at the front and thus the outside air on the one hand or that in the bottle itself forming gas on the other hand can diffuse into or out of or through the plug body Io. This forms the open pores loa a system of microchannels within the plug body Io that enable this gas exchange.

When executing according to Pig. 3, the end faces 12 of the cast skin Io are fine channels 13 by means of needles or the like, according to the Completion of the plastic stopper pierced around the face of the system of microchannels within the stopper body Io to open and thus also to enable gas exchange.

Such fine channels can also be created according to FIG. 4 in that during injection molding on the tool core inwardly protruding channel mandrels in the gief skin 12 release fine channels 14 that connect the outside air or the inside gas in the bottle through the microchannels of the stopper body produce"

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In another embodiment of a plastic stopper made of a foam plastic such as polyurethane sindjtai cut the end faces 12 narrow gaps 15 which go through the cast skin and also the Allow open-pore gas exchange through the plug body Io.

Q The measures described above are production-related easy and create a cheap plastic stopper as a mass-produced product that meets the requirements for quality improvement or maintenance is fully sufficient.

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Claims (7)

Protection claims 1. Plastic stoppers for wine bottles or the like made of a propellant with partially open pores designed cylindrical plug body with an outer, essentially closed cast skin, characterized in that the stopper (lo) has open pores (loa) on both sides designed 1st. 2. Plastic stopper according to claim 1, characterized in that da ^ on the end faces of the stopper the Cast skin (12) is removed. 3. Plastic stopper according to claims 1 and 2, characterized in that the end faces of the cast skin (12) are removed from the plug body (lo) by cutting. Ί. Plastic stopper according to claim 1, characterized in that that on the end faces of the plug (lo) the inner pore space (loa) of the plug (lo) with Air ducts connecting the outside air are incorporated. 5. Plastic stopper according to claims 1 and 4, characterized in that the air channels (14) during the fuel «casting process are made by channel mandrels arranged on the tool core. I I I t • r ι · ■ fr · 6. Plastic stopper according to claims 1 and 4, characterized characterized in that the air channels (13) in the finished cast skin (12) on the front side subsequently by means of needles or the like. Are pierced. 7. Plastic stopper according to claim 1, characterized in that that ir the end faces of the cast skin <12) gaps (15) are cut.