01.30.23
Tomonari Takeuchi, Tochigi, Japan.
Assigned to Daio Paper Corporation, Ehime, Japan.
Filed: 7/19/17
Issued: 1/3/23
A disposable wearing article, having an elastic film stretchable structure in which an elastic film is stacked between a first sheet layer having air permeability and a second sheet layer having air permeability, the first sheet layer and the second sheet layer are bonded through bonding holes penetrating the elastic film at a plurality of sheet bonded portions arranged at intervals, wherein a region having the elastic film stretchable structure includes a stretchable region that is stretchable in a stretchable direction, the stretchable region is contracted in the stretchable direction by a contraction force of the elastic film and is extensible in the stretchable direction, each of the bonding holes is bounded by a circumferential edge, wherein areas of the elastic film inclusive of and inside of each of the circumferential edges collectively comprise a bonding hole region; vent holes are provided on the elastic film at sites where the elastic film does not overlap with the sheet bonded portions; and wherein at least a portion of the vent holes are wholly formed at sites outside of the bonding hole region.
Assigned to Daio Paper Corporation, Ehime, Japan.
Filed: 7/19/17
Issued: 1/3/23
A disposable wearing article, having an elastic film stretchable structure in which an elastic film is stacked between a first sheet layer having air permeability and a second sheet layer having air permeability, the first sheet layer and the second sheet layer are bonded through bonding holes penetrating the elastic film at a plurality of sheet bonded portions arranged at intervals, wherein a region having the elastic film stretchable structure includes a stretchable region that is stretchable in a stretchable direction, the stretchable region is contracted in the stretchable direction by a contraction force of the elastic film and is extensible in the stretchable direction, each of the bonding holes is bounded by a circumferential edge, wherein areas of the elastic film inclusive of and inside of each of the circumferential edges collectively comprise a bonding hole region; vent holes are provided on the elastic film at sites where the elastic film does not overlap with the sheet bonded portions; and wherein at least a portion of the vent holes are wholly formed at sites outside of the bonding hole region.