Absorbent product including super absorbent material and a fluid absorption capacity monitor

A diaper including a capacity monitor, said diaper comprising an absorbent core comprising a fluff component and a super absorbent component, a hydrophilic cover sheet and a water impervious, translucent or transparent backing sheet, said core being positioned between said cover sheet and said backing sheet and said super absorbent material in said diaper having a given in-situ capacity for synthetic urine, said capacity monitor comprising

• an indicator extending longitudinally a substantial distance, said indicator being operable to provide a visually perceptible change when wet, said indicator being positioned in said diaper adjacent to said backing sheet so that the change of the indicator is visually perceptible through said backing sheet and
• a substantially water impervious baffle positioned inside the diaper between said backing sheet and said absorbent core so as to cover said indicator and separate it from said absorbent core, said baffle having a width which is greater than that of said indicator and a free edge around which synthetic urine can migrate from said absorbent core to said indicator, said baffle being effective, in cooperation with the components of the diaper, to prevent the flow of synthetic urine into wetting relationship with said indicator when the diaper contains an amount of synthetic urine which is less than a given percent of the in-situ capacity of the super absorbent, and ineffective to prevent such flow when the diaper contains an amount of synthetic urine which is greater than the given percent of the in situ capacity of the super absorbent, the given percent being at least 20.

A diaper including a capacity monitor, said diaper comprising an absorbent core including a fluff component and a super absorbent component, a hydrophilic cover sheet and a water impervious, translucent or transparent backing sheet, said core being positioned between said cover sheet and said backing sheet and said super absorbent material in said diaper being operable to absorb up to a given, maximum quantity of a desired liquid to the extent that, ten minutes after deposition of said given amount of liquid, said diaper has a skin wetness number of substantially zero, said capacity monitor comprising

• a hot melt adhesive containing a color change indicator, and extending longitudinally a substantial distance, said indicator being operable to provide a visually perceptible color change when said hot melt adhesive is wet, said hot melt adhesive being positioned in said diaper adjacent to said backing sheet so that the change of color of the indicator is visually perceptible through said backing sheet and
• a substantially water impervious baffle positioned inside the diaper between said backing sheet and said absorbent core so as to cover said hot melt adhesive and separate it from said absorbent core, said baffle having a width which is greater than that of said hot melt adhesive and a free edge around which liquid can migrate from said absorbent core to said hot melt adhesive, said baffle cooperating with the components of the diaper to control the migration of liquid from said at least one absorbent component to said indicator so that said given quantity of desired liquid deposited on the diaper produces a visually perceptible change over a predetermined length of said indicator and
• indicia provided on said diaper and visible through said backing sheet, said indicia being operable to indicate the predetermined length of said hot melt adhesive which undergoes a visually perceptible change when said given quantity of desired liquid is deposited on the diaper.

An absorbent product including a capacity monitor, said product comprising an absorbent core including super absorbent material, said core having a first and a second side, and a water impervious, translucent or transparent backing sheet, said backing sheet being positioned adjacent to said first side of said core and said super absorbent material in said absorbent product having a given in-situ capacity for liquid, said capacity monitor comprising

• an indicator extending longitudinally a substantial distance, said indicator being operable to provide a visually perceptible change when wet, said indicator being positioned in said absorbent product between said backing sheet and said core so that the change of the indicator is visually perceptible through said backing sheet and
• a substantially water impervious baffle positioned inside the diaper between said backing sheet and said absorbent core so as to cover said indicator and separate it from said absorbent core, said baffle having a width which is greater than that of said indicator and a free edge around which liquid can migrate from said absorbent core to said indicator, said baffle being operable to prevent the flow of a liquid into wetting relationship with said indicator when the core contains an amount of the liquid which is less than a given percent of the in-situ capacity of the super absorbent, and ineffective to prevent such flow when the core contains an amount of the liquid which is greater than the given percent of the in situ capacity of the super absorbent, the given percent being at least 20.