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US 8,454,882 B2Granted
Material dispensing system and method for making same
AssigneeThe Procter & Gamble Company
InventorsJohn Geoffrey Chan, Lawrence Edward O'Brien
Life of this patent
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Abstract
Material dispensing systems and methods for make such systems are described. The material dispensing systems employ a collapsible container that is at least partially surrounded by an elastically deformable band. The band stretches as the container is filled with a flowable composition, thereby creating potential energy which can then be used to dispense the composition in lieu of a propellant and/or pressurized container.
Claims10
A method of making a material dispensing system, the method comprising the steps of:
- (a) providing a container preform comprising a polymeric preform and an elastically deformable band surrounding at least a portion of the polymeric preform, wherein the deformable band is configured to prevent the polymeric preform from extending out of a bottom end of the deformable band;
- (b) heating the polymeric preform;
- (c) positioning the container preform into a mold cavity;
- and
- (d) applying pressure to an interior of the polymeric preform sufficient to cause the container preform to expand outwardly towards a wall of the mold cavity to form a collapsible bag, during which the elastically deformable band is stretched both axially and radially and potential energy is generated in association with the stretched elastically deformable band which at least partially collapses the container axially and radially when the applied internal pressure is removed.
2 more elements
Dependencies are inferred from the claim text.