Absorbent laminate and disposable absorbent article

• US 20070179469A1
• Filed: 01/24/2007
• Published: 08/02/2007
• Est. Priority Date: 01/30/2006
• Status: Active Grant

• Current Assignee: Livedo Corporation
• Original Assignee: Livedo Corporation
• Inventors: Takahashi, Yuki, Tatsukawa, Akiko
• Granted Patent: US 8,556,875 B2
• Time in Patent Office: Days
• US Class Current: 604/385.101
• CPC Class Codes: A61F 13/535 inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes A61F13/5323, A61F13/537 take precedence
• CPC Class Codes: A61F 2013/15365 Dimensions
• CPC Class Codes: A61F 2013/5307 characterized by the quantity or ratio of superabsorbent material
• CPC Class Codes: A61F 2013/8497 having decorations or indicia means

Abstract

The invention provides an absorbent laminate for absorbing a body fluid and usable for a disposable absorbent article, in which the absorbent laminate comprises an upper layer absorbent body and a lower layer absorbent body, the upper layer absorbent body has at least one opening part extended continuously or discontinuously in the longitudinal direction of the upper layer absorbent body, and the maximum width W1 of the opening part is 40% or less of the minimum width W2 of the upper layer absorbent body. The invention also provides a disposable absorbent article provided with the absorbent laminate.

Claims

1. An absorbent laminate for absorbing a body fluid and usable for a disposable absorbent article, wherein

the absorbent laminate comprises an upper layer absorbent body and a lower layer absorbent body,

the upper layer absorbent body has at least one opening part extended continuously or discontinuously in the longitudinal direction of the upper layer absorbent body, and

the maximum width W1 of the opening part is 40% or less of the minimum width W2 of the upper layer absorbent body.

2. The absorbent laminate according to claim 1, wherein the upper layer absorbent body and the lower layer absorbent body are respectively made of fiber aggregates containing 20% by weight or more of highly water-absorbent resin powder.

3. The absorbent laminate according to claim 1, wherein the upper layer absorbent body has two or more opening parts which are arranged right and left symmetrically on both side of the center line along the longitudinal direction of the upper layer absorbent body and has fiber aggregates on the center line.

4. The absorbent laminate according to claim 1, wherein the opening part is arranged unevenly in either one of edge sides along the width direction.

5. The absorbent laminate according to claim 1, wherein

a filament nonwoven is arranged as a liquid-permeable intermediate sheet at least beneath the opening part between the upper layer absorbent body and the lower layer absorbent body, and

the liquid-permeable intermediate sheet is bonded to one or both of the upper layer absorbent body and the lower layer absorbent body.

6. The absorbent laminate according to claim 5, wherein the liquid-permeable intermediate sheet is colored with a color other than white color.

7. A disposable absorbent article comprising the absorbent laminate according to claim 1.