US 12,004,927 B2
Method for forming elastic film stretchable structure and absorbent article
Syunsuke Sakai, Tochigi (JP)
Assigned to Daio Paper Corporation, Ehime (JP)
Filed by Daio Paper Corporation, Ehime (JP)
Filed on Apr. 11, 2022, as Appl. No. 17/717,837.
Application 17/717,837 is a division of application No. 16/082,798, granted, now 11,331,222, previously published as PCT/JP2017/006999, filed on Feb. 24, 2017.
Claims priority of application No. 2016-060316 (JP), filed on Mar. 24, 2016.
Prior Publication US 2022/0313496 A1, Oct. 6, 2022
Int. Cl. A61F 13/15 (2006.01); A61F 13/49 (2006.01); A61F 13/496 (2006.01); B29C 65/08 (2006.01); B32B 37/04 (2006.01); B32B 37/14 (2006.01); B32B 5/02 (2006.01); B32B 5/08 (2006.01); B32B 27/08 (2006.01); B32B 27/12 (2006.01); B32B 27/32 (2006.01)
CPC A61F 13/15617 (2013.01) [A61F 13/15 (2013.01); A61F 13/15593 (2013.01); A61F 13/15699 (2013.01); A61F 13/15739 (2013.01); A61F 13/49 (2013.01); A61F 13/49012 (2013.01); A61F 13/4902 (2013.01); A61F 13/496 (2013.01); B29C 65/086 (2013.01); B32B 37/04 (2013.01); B32B 37/14 (2013.01); A61F 2013/15869 (2013.01); A61F 2013/1591 (2013.01); A61F 2013/15934 (2013.01); A61F 2013/49022 (2013.01); B32B 5/022 (2013.01); B32B 5/08 (2013.01); B32B 27/08 (2013.01); B32B 27/12 (2013.01); B32B 27/32 (2013.01); B32B 37/144 (2013.01); B32B 2307/51 (2013.01); B32B 2307/7265 (2013.01); B32B 2555/02 (2013.01)] 10 Claims
 
1. An absorbent article comprising
an absorber that absorbs excrement, wherein:
the absorbent article has an elastic film stretchable structure in which an elastic film is stacked between a first sheet layer and a second sheet layer and the first sheet layer and the second sheet layer are bonded via through-holes penetrating the elastic film at a plurality of sheet bonded portions arranged at intervals, and
the elastic film stretchable structure has a portion in which an area rate of a subset of the plurality of sheet bonded portions changes in a stretchable direction of the elastic film stretchable structure, and a difference between a maximum value and a minimum value in a change of the area rate of the subset of the plurality of sheet bonded portions in the stretchable direction is 4.5% or less.