DE3208156A1 - PLASTIC CONTAINERS FOR PRESSURED LIQUIDS, ESPECIALLY FOR MINERAL WATERS, MINERAL WATER DRINKS OR THE LIKE - Google Patents

Description

BERNHARD RICHTER - "" - "* .-" -: .- esoo nurnberq 20, den

PATENT ADVOCATE ^ TddoBSi ^ inwnjwwis

reins. Representative at the Europ. Pufentaml European patent attorney

05.03.1982

R / C / pe

ACQUA MINERALE SAN BENEDETTO S.p.A.

Viale Kennedy, 65, 30037 SCORZE (Province of Venezia), Italy

Plastic containers for pressurized Liquids, in particular for mineral water, mineral water beverages or the like

The invention relates to a plastic container for under Pressurized liquids, in particular mineral water, mineral water beverages or the like, with a cylindrical, on its upper side in a standard for bottles or cans Way closed body. There are already 'plastics from a particular composition known which are suitable for coming into contact with food products, wherein Such plastics are used for the production of vessels or containers for food in liquid form. However, if these liquids to be accommodated in the containers are pressurized, there is a significant mechanical problem in terms of the stresses and the deforming loads on the container must be kept within limits.

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On the other hand is the use of plastics from an economic point of view only expedient if when the container is made with very thin walls can be, d. H. with a relatively low cost of materials compared to a similar one made of glass Container.

The present invention is therefore based on the object indicate the formation of a container made of plastic for pressurized liquids, with the aim that this container is resistant to the pressure inside it without breaking or deforming is.

Furthermore, with this new container design, care should be taken that the container despite the fact that it has relatively thin plastic walls, opposite mechanical stress is sufficiently resistant.

After all, it should also be the case with the new container design nor allow the container to be manufactured using known and proven methods and materials can be.

Based on a container of the type defined at the beginning This object is achieved according to the invention in that a bottom part of the container with the cylindrical body is connected by a downwardly tapering, conical section, which is an annular section on the bottom of the container Support surface · defined, and that one through the annular Support surface area delimited by a curved surface is completed, their hollow rounding or concavity

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points downwards and which has such a design that the geometric lines of contact, uid through the points the connection of the curved surface with the annular Support surface are guided, parallel to the central axis of the container get lost.

According to an advantageous development of the invention provided that the annular bearing surface has a reduced diameter which is approximately half the actual The maximum diameter of the container is.

Furthermore, it can be advantageous within the scope of the invention, if the enclosed within the annular support surface, curved surface or cover essentially has the shape of an ellipsoid of revolution.

In this case, the bottom part of the container and the curved surface or cover can preferably be formed in one piece and made of injection-molded, blown or extruded plastic be made.

Further details, features and advantages of the invention are explained in more detail below with reference to the drawing, in which two preferred embodiments of the invention are shown are.

In the context of exemplary embodiments:

Fig. 1: a phantom image of an initial version a container, in particular a bottle and

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2: a phantom image of a second embodiment of a container, in particular a can or can.

The bottle shown in Fig. 1 has a cylindrical Body 1 with a corresponding outer wall, which is generally designated by 2 at its lower portion Bottom part is completed. This bottom part 2 merges into a tapering area which essentially has the shape an inverted truncated cone 3 has.

This results in a narrowing support ring 4 with a radius roughly equal to one half of the maximum Bottle radius is.

A circular one enclosed within the support ring 4 Area 5 is closed by a curved cover 6, the hollow rounding or concavity of which points downwards.

As can be clearly seen from FIG. 1, the curved cover 6 is essentially formed by half an ellipsoid of revolution formed, in which the geometric Tonguntial lines a and b, through the points 7 and ß the contact with the support ring 4 are guided, parallel to din 'central axis c of Bottle run off.

A can or can shown in Fig. 2 has a whole similarly shaped bottom part 102, in which an inverted frustoconical connecting piece 103 is present, which a cylindrical portion 101 with a support ring 104 connects.

There is also a domed cover 106 with the same Design provided. Because of this invention Training internal pressure forces, which could cause the container to break, are appropriately absorbed. Specifically, the most critical area is in the section between points 7 and θ according to Fig. 1 is an aolche geometrical design that the forces in a plane 9 (or 109 in the execution according to Fig. 2), which extends perpendicular to the axis of symmetry. This is a distribution of the loads which can be accommodated by the curved cover 6 and the circular area 5.

As a result, it becomes extremely stable and indestructible Receive container training, at least at the pressures such as those caused by mineral water, beer or soda drinks be exercised.

The containers equipped with such features can be manufactured by means of injection or blow molding processes, the high Ensure output rates.

Appropriately, the material used for this purpose consists of polyethylene terephthalate, which is suitable for both drawn manufacturing process as well as for use well suited in connection with food products.

However, another material can also be used and the dimensions can moreover be chosen practically as desired.

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Claims (4)

ßFl? NJMAT? Γ »lilf ^ fJT'Pl? ^: - - "- - * JJCKINΜ / \ KLI ΚΊΛ ~ Π-ίΧΚ-. .. ..., .- 8500 NORNBERQ 20, den PATENT Attorney Telephone Sa-No. (0911) W5015 reins. Representative at the Europ. Patent Office - Jf - TdcX ^ oTiSMe'Jin d European patent attorney OS, 03 :. 1982 ■ R / C / pe ACQUA MINERALE SAN BENEDETTO S.P.A. Viale Kennedy 65, 30037 SCORZE (Province of Venezia) Italy Patent and protection claims Plastic containers for pressurized liquids nits, in particular mineral water, mineral water. "drinks or the like, comprising a cylindrical, at its upper side in a übliehen for bottles or cans Wei ^i? a sealed body, characterized in that a bottom part C2j 102) of the container to the cylindrical body [ Ii 101) is connected by a downwardly tapering, conical section (3j 103) which defines an annular bearing surface (4j 104) on the underside of the container, and that an area (5 ) is completed by a curved surface (Bj 106), the hollow rounding or concavity points downwards and which has such a design that the geometrical tangents or lines of contact (a, b) through the points (7, B) of the connection the curved surface (6j 106) with the annular bearing surface (4) 104) are guided, run parallel to the central axis (c) of the container. 2. Container according to claim 1, characterized in that the annular bearing surface (4; 104) has a reduced Diameter about half the actual The maximum diameter of the container is. 3. Container according to claim 1 or 2, characterized in that that the inside the annular support surface (4; 104) enclosed, curved surface or cover (Bj 106) essentially the shape of an ellipsoid of revolution having. 4. Container according to one of claims 1 to 4, characterized in that the bottom portion (2> 102), and the curved surface or cover (Oj 106) in one piece formed and made of injected, blown or extruded Plastic are made.