Container, In Particular A Wide-Mouthed Jar, For Containing A Liquid Or Pasty Material And Combined With A System For Collecting And Dispensing Without Taking In Air

A container for holding a liquid or pasty material suitable for a collecting and dispensing system without taking in air wherein the container is rigid and includes a flexible bag containing the material to be dispensed and which is associated with the collecting system, the bag defining a generally cylindrical reservoir having at its upper top a large opening with a diameter equal to its inner diameter, the bag including four areas that comprise:

• a rigid upper sidewall with (i) an upper end having a peripheral free edge that cooperates in an airtight manner between a neck of the container or an edge of an optional rigid bowl, a corresponding flange of a cover of the associated dispensing system and (ii) a lower end having a peripheral edge that constitutes a rigid band providing a connection with
• a flexible and deformable lower sidewall having an inner diameter identical to that of the rigid upper sidewall and a concentricity that is ensured by the rigid band, the flexible and deformable lower sidewall extending axially from the rigid band toward
• a fillet or a chamfer that provide a connection and articulation area between the flexible and deformable lower sidewall and
• a rigid bottom having a diameter that is smaller than a diameter of the reservoir thus constituted, such that the bottom, when subjected to a vacuum signal by the collecting system, is drawn upward in the manner of a piston, driving the connection and articulation area as well as the flexible sidewall to fold back over itself.