PRESSURE GENERATION SYSTEM FOR A CONTAINER

摘要

The invention relates to the field of self-inflating pouches for use as discharge assistants in dispensers. In the prior art self-inflating pouches, which typically consist of adjacent compartments containing a first reactant in an aqueous solution and a second reactant in either an aqueous solution or solid form, difficulties were encountered in maintaining uniform gas generation in the pouch which resulted in erratic or inconsistent flow from the dispenser. The invention improves the uniformity of gas generation by providing the second reactant uniformly precipitated in a water-dispersible suspension medium. The expandable pouch (2) consists of a plurality of compartments containing a first reactant in an aqueous solution (30), such as a citric acid solution, and a water-dispersible gum suspension (34) containing a precipitated second reactant, such as sodium bicarbonate. The water-dispersible suspension medium (34) may also include a nucleating agent and surfactant.