Bottles and jars – Ejecting – Siphon type
Patent
1991-06-13
1993-09-21
Weaver, Sue A.
Bottles and jars
Ejecting
Siphon type
215 122, 220608, 220666, 220623, B65D 102, B65D 2300, B65D 2310
Patent
active
052461220
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns a storage bottle for household liquids, especially as packing for washing agent solutions and other household chemicals.
Household liquids, such as rinsing agents, washing agents, but also nutrients, such as e.g. oil and vinegar, are marketed in bottles of synthetic material. These represent a problem in the case of waste disposal.
These bottles are relatively rigid, i.e. in the case of disposal, they retain their volume and thus give rise to high spatial requirement in the household, in removal, in recycling or in the waste dump.
Therefore, for washing and rinsing agent solutions, it has already been suggested to provide flat-lying bags with a closable filling tube welded on vertically thereto and with a double bottom edge on each packing half between which, in filled condition, lies a separate inserted bottom and the halves press apart in order thus to make standing possible. Because of the closure standing vertically to the side surface, these bags are difficult to handle or difficult to fill and are relatively expensive in the production.
Therefore, the present invention has set itself the task of providing a storage bottle for the above-mentioned purposes which is able to stand, can be filled from above and, after emptying, can be pressed together without trouble to give a flat body almost freed of air.
The solution of this task succeeds in the case of a storage bottle of preferably extruded synthetic material with the help of the following constructional features well as a bottom, horizontal standing edges, in unfilled state due to its conformation but the bottom is flexible.
For the production, a synthetic material tube is first extruded in per se known manner and closed below. Thereafter, it is enclosed by the mould halves and placed under pressure against their inner wall. The mould halves have a spatial shape corresponding to the above-mentioned features.
Due to the choice of the ellipsoid cross-section, an inherently stable bottle results with a soft, unstable bottom which projects inwardly from the circumferential bottom standing edge corresponding to the two halves. In the case of filling, the bottom hangs downwardly just as in the case of the lifting up of a filled bottle. In the case of placing on a (flat) substrate, the bulging bottom presses without problems into the elastic bottle interior, a corresponding air reserve possibly being left herefor over the liquid.
After the emptying, the ellipsoid halves can, with expulsion of the air present in the bottle, be laid on one another almost without force and, in the case of disposal, essentially require only the spatial content of two films laid upon one another.
In order further to simplify the folding, it is suggested to provide a fold beading, extending to the bottom region at least on one outer surface distanced parallel to the edges or on the edge region between the two outer surfaces, which also stabilises at the same time the retracted ellipsoid concavedly-domed outer surface, i.e. prevents an undesired rebounding, since this engages with the previously mentioned edge.
As indicated above, the bottom is to be softly limp. In order also to ensure such a material property in the case of more rigid material, it is suggested to make this corrugated.
For the present purpose, synthetic materials have proved to be useful, such as tear-resistant polyethylene, polypropylene or the like materials suitable for recycling. These are extruded with tube wall thicknesses between 40-50 .mu. and stretched by blowing to wall thicknesses of about 10 to 40 .mu..
Especially suitable are so-called co-extrudates, whereby two films are extruded lying next to one another. There is hereby preferred a combination of low pressure and high pressure polyethylene. However, composite materials, such as polyethylene with polypropylene, can also be used.
The stability of the bottle can be further increased by bringing together of the ellipsoid halves to give a complete V-seam. This can be co-formed but it is also possible to weld the halves w
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Reimann-Dubbers Volker
Schick Jurgen
Joh. A. Benckiser GmbH
Weaver Sue A.
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