PROBLEM TO BE SOLVED: To provide a disposable diaper outer sheet having wide size adaptability while securing air permeability, and a diaper including the sheet.SOLUTION: The disposable diaper outer sheet comprises at least one unwoven fabric layer, the outer sheet having a front surface part to be disposed at an abdominal side of a wearer, a back surface part to be disposed at a back side of the wearer, a crotch part positioned between the front surface part and the back surface part and having a width narrower than those of the front surface part and the back surface part, and curved narrow parts spreading at both ends of the crotch part. The outer sheet has a folded part folded multiple time at a predetermined width such that when the outer sheet is worn, the folded part is expanded to generate a space between the wearer and the outer sheet.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】サイズ適性が広いと同時に、通気性も同時に確保された使い捨ておむつ用外層シート、及びこれを備えた使い捨ておむつを提供する。【解決手段】着用者の腹側に配置される前面部と、前記着用者の背側に配置される背面部と、前記前面部と背面部の間に位置し、前記前面部及び前記背面部より幅狭に形成された股下部と、前記股下部の両側端に広がる曲線状のくびれ部と、を有する少なくとも1層の不織布製の外層シートであって、前記外層シートは、所定の幅で複数回折り返された折り畳み部を有し、前記外層シートの装着時に、前記折り畳み部が広がることによって、前記着用者と前記外層シートの間に空間を生じることを特徴とする、使い捨ておむつ用外層シートである。【選択図】図1
