Absorbent Article and Method for Producing Same
AssigneeDaio Paper Corporation
InventorTakashi Matsumura
Life of this patent
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Abstract
An absorbent article having an elastic film stretchable region in which a stretch rate changes depending on the part, and a method of manufacturing the same. The above problem is solved when a stretchable region being stretchable at least in a width direction is included in a lower-torso region having a waist portion of an outer body of a front body and an outer body of a back body, and in the stretchable region, in a state in which an elastic film is stretched in a stretching and contracting direction at a stretch rate continuously increasing from a crotch side toward a waist opening side, a first sheet layer and a second sheet layer are joined.
Claims4
An absorbent article comprising
- a stretchable region being stretchable at least in one direction, wherein
- the stretchable region is formed by stacking an elastic film between a first sheet layer made of a nonwoven fabric and a second sheet layer made of a nonwoven fabric, and in a state in which the elastic film is stretched in a stretching and contracting direction of the stretchable region at a stretch rate continuously changing in a direction orthogonal to the stretching and contracting direction, the first sheet layer and the second sheet layer are joined via through holes formed in the elastic film at a large number of bond portions arranged at intervals in the stretching and contracting direction and the direction orthogonal thereto.
A method of manufacturing an absorbent article including a stretchable region being stretchable at least in one direction, wherein
- in forming the stretchable region, in a state in which an elastic film is interposed between a first sheet layer made of a nonwoven fabric and a second sheet layer made of a nonwoven fabric while being stretched in a stretching and contracting direction of the stretchable region at a stretch rate continuously changing in a direction orthogonal to the stretching and contracting direction,
- the elastic film is melted to form through holes at a large number of positions arranged at intervals in the stretching and contracting direction and the direction orthogonal thereto, and
- the first sheet layer and the second sheet layer are joined via the through holes.
Dependencies are inferred from the claim text.