Kao Corporation

Aiko Onda

Mina Tomita

Tokihito Sono

Takuo Yanashima

Yasuyuki Okuda

Kenji Kobayashi

Jun Sasaki

Ryota Kuramae

Toru Hayase

Bin Latif Muhamad Nor Salehuddin

Akio Takahashi

A diaper () includes an absorbent assembly () including a topsheet (), a backsheet (), and an absorbent core (), and has an article longitudinal direction (X) and an article lateral direction (Y). The absorbent core () is formed of a sheet-like article () including a plurality of absorbent units (), each including a long base portion () and water-absorbent polymer particles (). The sheet-like article () includes a plurality of unit portions arranged in the longitudinal direction (x1 direction), each unit portion including a plurality of the absorbent units () arranged side by side in the lateral direction (y1 direction). The sheet-like article () includes a pair of longitudinal joined regions (), a pair of lateral joined regions (), and intermediate lateral joined regions (). The sheet-like article () is joined to a constituent member adjacent thereto in the thickness direction (Z) at the pair of longitudinal joined regions (), the pair of lateral joined regions (), and the intermediate lateral joined regions (). Each unit portion includes a section in which neither the upper side nor the lower side thereof in the thickness direction (Z) is joined to the constituent member.

Absorbent article

A sheet-like article () for an absorbent article of the invention includes a plurality of absorbent units (), each including: a long base portion (); and water-absorbent polymer particles () that are fixed to a surface of first side of the long base portion (). In the sheet-like article (), the absorbent units () are arranged such that the longitudinal direction thereof is oriented in one direction. When the water-absorbent polymer particles () absorb a liquid, the water-absorbent polymer particles () swell beyond the lateral side edge portions (), of the long base portion (), that extend along the longitudinal direction, and a position, in the thickness direction, of each long base portion is varied from the position thereof before absorbing the liquid.

Sheet-shaped object and method for producing sheet-shaped object

A sheet-like article () for an absorbent article of the invention includes a plurality of absorbent units (), each including a long base portion () and water-absorbent polymer particles () fixed to a surface of one face of the long base portion (). In the sheet-like article (), the absorbent units () are arranged such that their longitudinal direction is oriented in one direction. Before the water-absorbent polymer particles () absorb a liquid, the water-absorbent polymer particles () are located inward of both lateral side edge portions (), of the long base portion (), that extend along the longitudinal direction. When the water-absorbent polymer particles () absorb a liquid, the water-absorbent polymer particles () swell beyond the lateral side edge portions (), of the long base portion (), that extend along the longitudinal direction, and a position, in the thickness direction, of the long base portion () is varied from the position thereof before absorbing the liquid.

Sheet and method for manufacturing sheet

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Utsunomiya, Japan

Aiko Onda