PROBLEM TO BE SOLVED: To provide a disposable underwear which hardly causes positional deviation and wrinkles in a junction between a belly side member and a back side member and can be continuously manufactured in the same direction.SOLUTION: A method for manufacturing a disposable underwear 1 includes bridging a crotch member 4 for each cycle in a flow direction to connect two parallelly running laminated webs 100A and 100B, and folding the crotch member 4 in half to lay the laminated webs on top of each other, connecting the webs at junctions 5a and 5b over a width direction for each cycle in the flow direction, and cutting the webs along the junctions 5a and 5b. Before connecting the two parallelly running laminated webs 100A and 100B over the width direction, an area to be the junctions 5a and 5b or a peripheral part below the area is partially connected so as to form positioning junctions K1 and K2.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2017,JPO&INPIT【課題】腹側部材と背側部材との接合部に位置ずれやしわが生じにくい使い捨て下着を、同じ向きに連続的に製造する。【解決手段】流れ方向に1周期毎に股部材4を架け渡されて接合される、並走する2つの積層ウェブ100A,100Bを、股部材4を二つ折りして重ね合わせ、流れ方向に1周期毎に幅方向に亘って接合部5a,5bで接合し、該接合部5a,5bに沿って切断する、使い捨て下着1の製造方法において、並走する2つの前記積層ウェブ100A,100Bを幅方向に亘って接合する前に、当該接合部5a,5bとなる領域又はその周辺の下部を部分的に接合して位置決め用接合部K1,K2を形成する。【選択図】図5
