Abstract: A special spring construction is particularly adopted for a dispensing system for fluent materials from a plastic or equivalent thin film bag rolled up inside a coiling spiral formed from a strip sheet constant force spring material to squeeze out the bag contents completely and to produce dispensing force during storage periods for bulk quantities. The coil spring strip may be of a metal, plastic, elastomer or fibrous materials and may form a wall of the bag so that the container may be made at very low cost for storage of bulk fluids for dispensing therefrom one serving at a time. Thus, a package array for fluent materials comprises a thin flexible-walled container or bag having a common area with an uncoiled spiral constant force spring strip and positioned to coil up by rolling up a container bag tail inside the coil spring spiral as constants are discharged.

Abstract: The invention employs combination spring and sponge power to dispense fluids and semi-solids from a container. A spring or springs are preferably molded into a compressible foam mass, such as polyurethane, and the combination is then compressed and positioned within a container, along with the material to be dispensed. Expansion provides the dispensing power and additionally serves to fill the void which would otherwise be left in the container as the material is being dispensed. No aerosol type gases are employed. The material to be dispensed may be separated from the spring and sponge by a cup or circular plate. Further, the material to be dispensed, particularly if liquid, may be contained in a plastic bag and the spring and sponge are preferably contained in a plastic bag compressed and sealed and then locked for further venting ot the atmosphere.