Absorbent article

Abstract

The present invention provides an absorbent article 1 that does not easily warp in a leg-surrounding portion. The absorbent article 1 includes an absorbing member 2 in an elongated shape arranged along a longitudinal direction of the absorbent article, and a stretchable chassis 3 having a leg-surrounding portion 3 a recessed inward in a width direction. At least a part of the chassis 3 is composed of a composite sheet 13 obtained by affixing a stretchable sheet 15 and a non-stretchable sheet 16 to each other by a plurality of adhesive portions 18 . The leg-surrounding portion 3 a has an intersection crossing an expansion and contraction direction of the chassis 3 at a predetermined angle. The plurality of adhesive portions 18 extend in a direction substantially perpendicular to the expansion and contraction direction.

1 . An absorbent article having a width direction and a longitudinal direction perpendicular to the width direction, comprising:
 an absorbing member in an elongated shape disposed along the longitudinal direction of the absorbent article; and   a stretchable chassis having a leg-surrounding portion recessed inward in the width direction of the absorbent article on both sides in the width direction formed therein, and an abdominal region provided in a front and back region of the chassis,   wherein at least the abdominal region and a portion of the leg surrounding portion of the chassis is composed of a stretchable composite sheet obtained by affixing, by way of a plurality of adhesive portions, a first sheet and a second sheet having a ratio of expansion and contraction that is different from that of the first sheet,   the leg-surrounding portion has an intersection crossing an expansion and contraction direction of the chassis at a predetermined angle,   the plurality of adhesive portions are provided with predetermined spacing in the expansion and contraction direction at the intersection and extend in a direction substantially perpendicular to the expansion and contraction direction in the entire stretchable composite sheet.   
     
     
         2 . The absorbent article according to  claim 1 , wherein
 the predetermined angle at the intersection is in the range of 20 degrees to 90 degrees.   
     
     
         3 . The absorbent article according to  claim 1 ,
 wherein the difference in ratios of expansion and contraction in the composite sheet between the first sheet and the second sheet is at least 20%.   
     
     
         4 . The absorbent article according to  claim 1 ,
 wherein a size in the expansion and contraction direction of the plurality of adhesive portions is in the range of 0.1 mm to 20 mm.   
     
     
         5 . The absorbent article according to  claim 1 ,
 wherein among the plurality of adhesive portions, the spacing between the adhesive portions adjacent to each other at the intersection of the leg-surrounding portion is in the range of 4 mm to 25 mm.   
     
     
         6 . The absorbent article according to  claim 1 ,
 wherein the expansion and contraction direction is the width direction, and each of the plurality of adhesive portions is formed in a linear shape extending in a direction substantially perpendicular to the expansion and contraction direction.   
     
     
         7 . The absorbent article according to  claim 1 ,
 wherein the ratio of the dimensions of the plurality of adhesive portions in the vicinity of the intersection is in the range of 0.4% to 83%.   
     
     
         8 . The absorbent article according to  claim 1 ,
 wherein the absorbent article is a diaper in the shape of pants.