Abstract: A fluid dispenser includes a containing case having an inner containment cavity for containing a first fluid to be dispensed, which is delimited by at least one pair of walls which have a membrane-like structure, at least one first wall of which is placed in contact with the fluid to be dispensed, a second wall of said pair at least partly surrounding the first wall. The dispenser further includes a closable hollow space, positioned between the first wall and the second wall; and a second fluid which, introduced in the hollow space and interacting with the first wall, imparts to the fluid to be dispensed a movement towards an outlet of the case and a simultaneous action at least of expelling to the outside of the case the gases present in the containment cavity.

Abstract: A fluid dispenser includes a containing case having an inner containment cavity for containing a first fluid to be dispensed, which is delimited by at least one pair of walls which have a membrane-like structure, at least one first wall of which is placed in contact with the fluid to be dispensed, a second wall of said pair at least partly surrounding the first wall. The dispenser further includes a closable hollow space, positioned between the first wall and the second wall; and a second fluid which, introduced in the hollow space and interacting with the first wall, imparts to the fluid to be dispensed a movement towards an outlet of the case and a simultaneous action at least of expelling to the outside of the case the gases present in the containment cavity.