Sealing Condition of Multiple-Container, in Particular Double-Tube, Packages Designed for Instant Preparation

A multiple dispenser comprising an outer container, an inner container and n intermediate containers (n≧1), said inner container being designed to contain a pasty product A and being housed inside an intermediate container, itself placed, like a nest of dolls, inside an intermediate container of greater dimensions, the largest of these being housed inside the outer container, each container being housed inside the container that is immediately larger so that the volume bounded by its outer surface and the inner surface of said immediately larger container can contain a pasty product Bi (i=1 to n+1) separated from the other pasty products, each container including a body and a head provided with a neck and a shoulder connecting said neck to said body, said neck having a side wall and, at one of its ends a base attached to the shoulder, the other end bounding one or more dispensing openings, the neck of the inner container being housed inside the neck of the outer container and having a cross-section with a shape such as it offers at least one flow path for pasty product A and, in combination with the inner surface of the neck of the immediately larger container, at least one flow path for pasty product Bi, the neck of the inner container being prolonged by a top part which is connected to said neck by a slender and/or notched ring-shaped zone which closes the single or multiple dispensing opening for product A, said slender and/or notched ring-shaped zone being placed on the side wall of the neck of the inner container so that, after assembly of said neck and the neck of the immediately larger container, followed by bursting of the slender and/or notched ring-shaped zone and detachment of said top portion, the open end of said neck is above the mouth of the neck of the immediately larger container, the tube being presented vertically, with the head at the top.