A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
154/117, 154/120
A61F 15/00 (2006.01) A61F 13/15 (2006.01) A61F 13/42 (2006.01) A61F 13/56 (2006.01)
Patent
CA 1038552
SELF-INFLATING STRUCTURE DAVID D. WHYTE ABSTRACT OF THE DISCLOSURE A self-inflating structure wherein some gas evolving material or reagent is sealed. The structure comprises a wall of semipermeable material which is sub- stantially pervious to molecules of an activator material and substantially impervious to free molecules of an evolved or product-of-reaction gas. Such free molecules of gas are provided when molecules of activator material interact or react with the gas evolving material. Upon exposing the out- side of the semipermeable wall of the structure to molecules of activator material, activator molecules permeate the structure wherein such activator molecules interact with the gas evolving material to provide free molecules of evolved gas or a product-of-reaction gas whereby the structure becomes inflated by the evolved gas. Such self-inflating structures, are also disclosed in combination with absorbent materials to provide absorbent products having low pre-inflation bulk. Such absorbent products include disposable diapers having substantially higher ratios of absorption capacity to weight of absorbent material than otherwise.
223254
Na
The Procter And Gamble Company
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