The present invention while suppressing a decrease in the flexibility to obtain the expansion and contraction area of more close to the fabric appearance. A above problems, flex region 80 includes a first sheet layer 20A made of non-woven fabric, together with the elastic film 30 between the second sheet layer 20B made of nonwoven fabric are laminated, the elastic film 30 is stretchable in a state of being stretched in the stretching direction of the region 80, the first sheet layer 20A and the second sheet layer 20B is, expansion and contraction direction and a number of joint portions arranged at intervals in zigzag direction as a reference perpendicular thereto only 40 are joined through the through hole 31 formed in the elastic film 30, the bonding unit 40 is elongated in a direction perpendicular to the stretching direction, and is a line-symmetric shape with respect to a center line passing through the center of the elongating and contracting direction and it has a maximum width 40x of the elongating and contracting direction of the joint 40 is 0.1 1.1Mm, distance d1 of the joint 40 aligned in the stretch direction is 3 12.9Mmmm, in a direction perpendicular to the stretch direction distance d2 of the joint 40 aligned is solved by a 2~10.5mm.FIELD 3【課題】柔軟性の低下を抑えつつ、より布に近い外観の伸縮領域を得る。【解決手段】上記課題は、伸縮領域80が、不織布からなる第1シート層20Aと、不織布からなる第2シート層20Bとの間に弾性フィルム30が積層されてなるとともに、弾性フィルム30が伸縮領域80の伸縮方向に伸長された状態で、第1シート層20A及び第2シート層20Bが、伸縮方向及びこれと直交する方向を基準として千鳥状に間隔を空けて配列された多数の接合部40のみで、弾性フィルム30に形成された貫通孔31を通じて接合されており、接合部40は、伸縮方向と直交する方向に細長く、かつ伸縮方向の中央を通る中央線に関して線対称の形状とされており、接合部40の伸縮方向の最大幅40xは0.1~1.1mmであり、伸縮方向に並ぶ接合部40の間隔d1は3~12.9mmmmであり、伸縮方向と直交する方向に並ぶ接合部40の間隔d2は2~10.5mmであることにより解決される。【選択図】図3
