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US 9,956,312 B2Granted
Absorbent articles comprising wetness indicators
AssigneeThe Procter & Gamble Company
InventorsThomas James Klofta, Ryan Louis Malsch
Life of this patent
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Abstract
An absorbent article that includes a backsheet, a wetness indicator composition having good stability, and an absorbent core. The wetness indicator composition includes a stabilizer, a colorant, and a matrix. The colorant has first and second color states associated with first and second wetness indicator states. The wetness indicator exhibits no color change after 10 days when measured according to the CTH Stability Test.
Claims19
An absorbent article comprising:
- an absorbent core and a backsheet, the backsheet including a film layer joined to a nonwoven layer;
- a wetness indicator disposed on the film layer, the wetness indicator including a first acidic stabilizer, a second acidic stabilizer, a colorant, and a matrix, the matrix including a tackifier, a low molecular weight polyethylene glycol and a high molecular weight polyethylene glycol, and a water-dispersible polymer;
- and
- wherein the wetness indicator exhibits no visible color change through the backsheet film layer after 5 days according to the CTH Stability Test;
- wherein the second acidic stabilizer is anhydrous citric acid;
- and
- wherein the anhydrous citric acid is present in a smaller amount than the first acidic stabilizer.
4 more elements
An absorbent article comprising:
- an absorbent core including a complex of absorbent polymer material and thermoplastic adhesive material, the absorbent core being substantially cellulose free;
- a backsheet disposed on an outer facing surface of the absorbent article, the backsheet including a film layer joined to a second nonwoven layer;
- and
- a wetness indicator disposed on the film layer, the wetness indicator including a first acidic stabilizer, a second acidic stabilizer, a colorant, and a matrix, the matrix including a tackifier and at least one of a water-soluble polymer and a water-dispersible polymer;
- wherein the wetness indicator exhibits no visible color change through the backsheet film layer after 5 days according to the CTH Stability Test;
- wherein the second acidic stabilizer is anhydrous citric acid;
- and
- wherein the anhydrous citric acid is present in a smaller amount than the first acidic stabilizer.
5 more elements
Dependencies are inferred from the claim text.