Nonwoven fabric, method for producing nonwoven fabric, and absorbent article
AssigneeUni-Charm Corporation
InventorsKatsuhiro Uematsu, Hideyuki Ishikawa, Kouichirou Tani
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Abstract
The invention provides a nonwoven fabric having good fluid drawing properties, in which fluid hardly remains, a method for producing a nonwoven fabric, and an absorbent article. The nonwoven fabric has a thickness direction and a planar direction perpendicular to the thickness direction, and includes a high density region having a higher fiber density than an average fiber density. The high density region penetrates from one side to another side in the thickness direction.
Claims10
A nonwoven fabric that has a thickness direction and a planar direction perpendicular to the thickness direction, the nonwoven fabric comprising:
- a high density region having a higher fiber density than an average fiber density,
- the high density region penetrating from one side to another side in the thickness direction.
A method for producing a nonwoven fabric, comprising:
- a step of heating in which a fibrous web that contains a heat-shrinkable fiber having thermal welding properties and has a thickness direction is heated, and in which the fibrous web is heated at a temperature at which the heat-shrinkable fiber can melt and undergo thermal shrinkage, such that the fibrous web that has been heated has irregularities on a surface of the fibrous web and fibers are more densely gathered in a region corresponding to a convex section than in a region corresponding to a concave section;
- and
- a step of pressing the fibrous web in the thickness direction such that the convex section of the irregularities that has been formed in the step of heating is crushed.
An absorbent article that has a thickness direction and a planar direction perpendicular to the thickness direction and that is attached to human body, the absorbent article comprising:
- a surface sheet, at least part of which is fluid-permeable;
- a fluid-impermeable back face sheet;
- a fluid-retaining absorbent body disposed between the surface sheet and the back face sheet;
- and
- a second sheet disposed between the surface sheet and the absorbent body,
- the second sheet being a nonwoven fabric,
- the nonwoven fabric including a high density region that has a higher fiber density than an average fiber density of the nonwoven fabric, and
- the high density region penetrating from a side close to the surface sheet to a side close to the absorbent body of the nonwoven fabric in the thickness direction.
Dependencies are inferred from the claim text.