TH18268B - The structure of the absorbent/absorbent membrane has the capability of adsorbing and matching the absorbent material and similar materials. - Google Patents

Abstract

This invention relates to a structured system of paired absorbent lining/absorbent layers that effectively utilize absorbent materials, where the absorbent capacity of the lining is correlated with the absorbent capacity of the secondary layer of the absorbent structure, such as the absorbent layer itself. This invention finds that by precisely matching the absorbent capacity of the lining material with the absorbent capacity of the secondary layer, the liquid absorption of the lining and secondary layer exceeds the liquid absorption capacity of the secondary layer alone. Thus, according to one manifestation of this invention, the absorbent capacity of the lining is defined within a specific range of the secondary layer in a manner that improves the liquid absorption capacity of the lining/secondary layer. According to another manifestation, the absorbent capacity of the lining is paired with or correlated with the absorbent capacity of the secondary layer in such a way that the liquid absorption of the lining/secondary layer is improved by at least approximately 50 percent over the liquid absorption of the secondary layer alone. According to yet another manifestation, the absorbent capacity of the lining material is paired with or correlated with the absorbent capacity of the secondary layer. The characteristic is that the combined liquid absorption of the lining/substrate layer is at least approximately 65 percent greater than the liquid absorption of the substrate layer alone, as revealed here, by selecting a suitable absorption capacity of the lining material relative to the absorption capacity of the substrate material. The liquid absorption rate of the lining material not only limits or prevents liquid absorption into the substrate and adjacent areas of the absorbent structure, but also provides an unexpected increase in liquid absorption greater than that of the substrate layer alone. A well-formed lining and substrate can be a non-woven fabric.

Claims (19)

1. A structured, bonded, absorbent membrane system consisting of a primary absorbent membrane and primary hydrophilicity, a secondary absorbent layer and secondary hydrophilicity, a membrane fluid-connected to the secondary layer, a secondary layer with fluid outflow, a combined fluid outflow between the membrane and the secondary layer where the combined fluid outflow is at least approximately 50 percent less than the fluid outflow of the secondary layer, a primary absorbent capacity within approximately 85 percent to approximately 110 percent of the secondary absorbent capacity, and a primary hydrophilicity that is at least equal to a secondary hydrophilicity. 2. A structured lining/absorbent membrane with the absorbent capacity as specified in Claim 1, where such lining is a non-woven fabric. 3. A structured system of absorbent/material membranes with the absorbent capacity as specified in Claim 1, where such membranes are injected and bonded together. 4. A structured system of absorbent/viscous membranes with the absorbent capacity as specified in Claim 1, where such membranes are interconnected by a mesh. 5. A structured, absorbent/padded membrane system with the absorbent capacity as specified in Claim 1, in which such sublayer includes a two-component fiber. 6. A structured membrane/absorbent layer with the absorbent capacity as specified in Claim 1, in which such membrane and subsequent layers consist of polyolefins. 7. A structured system of absorbent/liner layers with the absorbent capacity as specified in Claim 1, in which such liner and the sublayer are bonded together. 8. A structured, absorbent membrane/absorbent layer with the absorbent capacity described in Claim 1, in which the combined volume of fluid outflow is at least approximately 65 percent less than the volume of fluid outflow of the sublayer. 9. A structured, bonded, absorbent membrane system consisting of a primary absorbent membrane and a primary hydrophilic layer, and a secondary non-woven layer with a secondary absorbent membrane and a secondary hydrophilic layer. This membrane and secondary layer are fluidly connected, with the primary absorbent capacity within approximately 85 percent and the secondary absorbent capacity within approximately 110 percent, and the primary hydrophilicity being at least equal to the secondary hydrophilicity. 10. A structured lining/absorbent membrane with the absorbent capacity as specified in Claim 9, where such lining is a non-woven fabric. 11. A structured system of absorbent/viscous membranes with the absorbent capacity as specified in Claim 9, where such membranes are injected and bonded together. 12. A structured system of absorbent/viscous membranes with the ability to be bonded together as specified in Claim 9, where such membranes are interconnected by a continuous membrane. 13. A structured, absorbent/padded membrane system with the absorbent capacity as specified in Claim 9, in which such sublayer includes a two-component fiber. 14. A structured membrane/absorbent layer with the absorbent capacity as specified in Claim 9, in which such membrane and such sublayer consist of polyolefin. 15. A structured system of absorbent/viscous membranes with the absorbent capacity as specified in Claim 9, in which such membrane and the sublayer are bonded together. 16. A structured membrane/absorbent layer with the absorbent capacity as specified in Claim 9, where the secondary layer has an absorbent volume that is at least approximately 50 percent less than the absorbent volume of the secondary layer. 17. A structured, absorbent/absorbent layer system with the absorbent capacity specified in Claim 9, in which the combined volume of fluid outflow is at least approximately 65 percent less than the volume of fluid outflow of the sublayer. 18. A disposable absorbent consisting of a primary absorbent layer and first-degree hydrophilicity; an outer shell; an absorbent structure sandwiched between the primary and outer shell; an absorbent structure consisting of a secondary non-woven layer with secondary absorbent layer and second-degree hydrophilicity; and an absorbent core. The primary layer is fluid-exhausting; the primary layer and the primary layer have a combined fluid-exhausting volume where this combined volume is at least approximately 50 percent less than the fluid-exhausting volume of the secondary layer; the primary absorbent capacity is within approximately 85 percent to approximately 110 percent of the secondary absorbent capacity; and the first-degree hydrophilicity is at least equal to the second-degree hydrophilicity. 19. Disposable absorbent material as specified in claim 18, where the volume of the combined fluid outflow is at least approximately 65 percent less than the volume of the fluid outflow of the secondary layer.