Tomomi Isogai, Kagawa, Japan; Shota Uto, Kagawa, Japan; and Takuya Miyama, Kagawa, Japan.
Assigned to Unicharm Corporation, Ehime, Japan.

Filed: 3/17/22
Issued: 8/26/25

An absorbent article having a longitudinal direction, a width direction, and a thickness direction in an unfolded state, the absorbent article comprising: a liquid absorbent body; a feces indicator that visually changes between two colors, wherein the feces indicator changes, on contact with feces, from a pre-feces-contact color to a post-feces-contact color; a urine indicator that visually changes between two colors, wherein the urine indicator changes, on contact with urine, from a pre-urine-contact color to a post-urine-contact color, and the feces indicator and the urine indicator are disposed on a non-skin side in the thickness direction with respect to the absorbent body; and a back sheet that has a graphic pattern and that is disposed on the non-skin side in the thickness direction with respect to the feces indicator and the urine indicator, wherein one of the two colors of the feces indicator is visually similar to one of the two colors of the urine indicator, whereas the other of the two colors of the feces indicator is visually dissimilar to the other of the two colors of the urine indicator, the graphic pattern is disposed in line in parallel with the feces indicator and the urine indicator, and at least partially overlaps at least either one of the feces indicator and the urine indicator when viewed in the thickness direction, the pre-feces-contact color and the pre-urine-contact color are visually similar to a color of the graphic pattern, at least one of the post-feces-contact color and the post-urine-contact color are visually dissimilar to the color of the graphic pattern, when the pre-feces-contact color, the pre-urine-contact color, the post-feces-contact color, and the post-urine-contact color are respectively specified as closest hues among 24 color hues of an Ostwald color wheel, a similarity degree between the one of the two colors of the feces indicator and the one of the two colors of the urine indicator is either one of: having an identical hue in the Ostwald color wheel, and being within a range in which a difference between color numbers is less than 6 in the Ostwald color wheel, and a dissimilarity degree between the other of the two colors of the feces indicator and the other of the two colors of the urine indicator is having color numbers that are apart by 6 or more from each other in the Ostwald color wheel.