STRUTTURA AUTORIGONFIABILE E PRODOTTI OTTENTUTI CON ESSA

摘要

A self-inflating structure wherein some gas evolving material or reagent is sealed. The structure comprises a wall of semipermeable material which is substantially 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 outside 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.