PROBLEM TO BE SOLVED: To provide a disposable diaper that clearly changes appearance before and after urination and easily draws the interest of children.SOLUTION: The disposable diaper includes, on the top sheet 22 side of a liquid-impermeable sheet 21, a liquid-permeable bag 40, a highly absorbent polymer 41 sealed inside the bag 40, and a concealing cylinder 50 that wraps the bag 40, and further includes a urination indicating part 42 on a portion of the outer surface of the bag 40 that is covered and concealed by the concealing cylinder 50. The disposable diaper is configured in such a manner that when urination occurs and urine is absorbed by the highly absorbent polymer 41 inside the bag 40, the bag 40 swells with the swelling of the highly absorbent polymer 41, the concealing tube 50 splits as a result of being unable to resist the swelling, the urination indicating part 42 is exposed from the split region, and the exposed urination indicating part 42 becomes visible from the outside.COPYRIGHT: (C)2012,JPO&INPIT【課題】排尿前後においてはっきりとした外観変化があり、幼児の興味を引き易い使い捨ておむつを提供する。【解決手段】上記課題は、液透過性を有する袋体40と、袋体40内に密封された高吸収性ポリマー41と、袋体40を包む隠蔽筒体50とを、液不透過性シート21の表面シート22側に設け、袋体40の外面のうち隠蔽筒体50により被覆隠蔽された部分に排尿表示部42を設け、排尿があり、袋体40内の高吸収性ポリマー41に尿が吸収されると、高吸収性ポリマー41の膨張に伴い袋体40が膨張し、その膨張に抗しきれずに隠蔽筒体50が裂開して、その裂開部分から排尿表示部42が露出し、この露出した排尿表示部42が外部から視認可能となるように構成することで解決される。【選択図】図10
