Multi-chamber container with device for discharge of a substance

Abstract

The invention is a container having at least two product chambers connected to form a common multi-chamber container system. Each of the product chambers includes at least one product discharge opening and the product discharge openings open into a common outlet channel. At least one of the product chambers includes at least one discharge valve device provided in the area of the product discharge opening that permits the discharge of a substance located in the product chamber but prevents return flow of the discharged substance into the product chamber. The discharge valve device also permits the admission of air into the product chamber.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This is a continuation application of PCT / EP02 / 03151, filed Mar. 21, 2002, which is incorporated herein by reference in its entirety.FIELD OF THE INVENTION [0002] The invention relates to a container with at least two product chambers, in which the product chambers are connected in such a way that they form a common multi-chamber container system, and in which each of the product chambers has an opening for discharge of the product. BACKGROUND OF THE INVENTION [0003] Many liquid and cream-like cosmetic products, but also food products, medical, domestic, chemical and technical products, are supplied in flexible bottles made of plastic (or in similar containers such as plastic tubes, canisters or the like). These are usually provided with a closure, preferably made of plastic. For product removal, the container is inclined, and, specifically in the case of somewhat more viscous products, the container is compressed in order for the produ...

AI Technical Summary

Benefits of technology

[0015] Claim 1 therefore concerns a container with at least two product chambers, in which the product chambers are connected in such a way that they form a common multi-chamber container system, and in which each of the product chambers has at least one product discharge opening. For at least one of the product chambers, at least one valve device provided in the area of the product discharge opening permits the discharge of a substance located in the product chamber (valve device for product discharge), but prevents return flow of the discharged substance or of parts thereof into the product chamber, and where readmission of air into the product chamber is also permitted, and the product discharge openings of the individual product chambers open out in a common outlet channel.

[0044] By integrating the air readmission valve in the discharge valve system, it is possible to ensure a high degree of accuracy and precision in the injection-molding operation normally used for producing such articles. The quality of the product is improved. The valve system can also advantageously be made in one piece, by which means the number of production steps can be reduced, the cost of production can be lowered, and the accuracy of fit and the functionality can be improved.

Problems solved by technology

In the example of shampoo, these product residues are usually contaminated with spray water, as a result of its being used at a wash basin or in the shower.

In the food sector, there is the problem of contamination of container contents, for example, when mayonnaise is added to salads or sandwiches or when mustard is added to sausages.

It is thus possible, in particular, for bacteria and fungi to multiply in the contents and thus render the latter unappetizing, inedible or, in extreme cases, even toxic.

A corresponding problem affects in particular the discharge devices of multi-chamber containers.

This can lead to clouding, soiling or contamination, or, for example in the case of the two-component adhesive, to undesired reactions in one or more of the chambers.

The product may in this way be rendered unusable.

In the example of washing and body-care substances, the storage life of individual components may be adversely affected, for example that of the body-care substance through incorporation of surfactants from the wash substance.

A favorable geometry means that the closure is configured such that contact with the skin or other contaminated surfaces is made difficult.

The increased outlay usually gives rise to very much higher costs than a flexible plastic bottle.

Moreover, removal of residues from these systems is usually very poor.

Pumping systems are slightly more advantageous than airless systems, but are still more expensive than straightforward bottles with a closure.

However, a disadvantage of this system too is that unclean water can be drawn back in and contaminate the contents.

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