Disposable absorbent article having improved side features

• US 6,746,436 B1
• Filed: 06/19/2001
• Issued: 06/08/2004
• Est. Priority Date: 12/30/1998
• Status: Expired due to Fees

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Sierri, Giancarlo, Wierlacher, Stefan Alois
• Primary Examiner(s): Lewis, Aaron J.
• Assistant Examiner(s): Stephens, Jacqueline F
• Application Number:
  US09/868,541
• Time in Patent Office: 1,085 Days
• Field of Search: 604/378, 604/385.01, 604/380, 604/379, 604/385.22, 604/385.28, 604/385.201, 604/385.31, 604/385.04, 604/385.17
• US Class Current: 604/385.04
• CPC Class Codes: A61F 13/15203 Properties of the article, e.g. stiffness or absorbency chemical aspects A61L15/00
• CPC Class Codes: A61F 13/4704 having preferential bending zones, e.g. fold lines or grooves
• CPC Class Codes: A61F 13/47263 with activating means, e.g. elastic, heat or chemical activatable means
• CPC Class Codes: A61F 13/47272 with a longitudinal raised end, e.g. cup-shaped gluteal groove for edge leakage prevention A61F13/494
• CPC Class Codes: A61F 2013/15357 Stiffness, e.g. Taber rigidity

Abstract

A disposable absorbent article adapted to form a tridimensional shape before use with a generally upwardly convex rear region, having a body facing surface and a garment facing surface, a longitudinal symmetry plane, a front end edge and a rear end edge, and comprising a liquid pervious topsheet, a backsheet joined to said topsheet and an absorbent core intermediate the backsheet and the topsheet. The disposable absorbent articles of the present invention are preferably applied directly to the user'"'"'s body, and comprise improved side features which extend laterally and are capable of staying in close contact with the user'"'"'s inner thigh area, and adjacent to that, when the disposable absorbent article is applied to the user'"'"'s body.

Claims

1. A disposable absorbent article adapted to form a three dimensional shape before use, said disposable absorbent article comprising

a main body portion, a liquid pervious topsheet, a backsheet joined to said topsheet, an absorbent core intermediate said topsheet and said backsheet, a body facing surface, a garment facing surface, a longitudinal symmetry plane, and a pair of longitudinal side edges, said absorbent core having a front portion, a central portion and a rear portion, respectively corresponding to a front section, a central section, and a rear section of said main body portion, said disposable absorbent article further comprising

said disposable absorbent article characterized in that

at each of said longitudinal side edges at least one rider element is joined to said main body portion, wherein each of said rider elements has a bending stiffness of at least 0.02 N as defined in the Bending Stiffness Test described herein.

2. A disposable absorbent article according to claim 1, characterized in that it comprises two side flaps each laterally joined to said main body portion along a respective longitudinal side edge and extending laterally outward beyond said respective longitudinal side edge of said main body portion to a respective distal edge, wherein each of said flaps comprises at least one of said riders elements.

3. A disposable absorbent article according to claim 1, characterized in that said bending stiffness is comprised between 0.04 N and 0.25 N.

4. A disposable absorbent article according to claim 1, characterized in that said main body portion is narrower in said central section than in said rear section.

5. A disposable absorbent article according to claim 4, characterized in that each of said side flaps extends from at least part of said front section to at least part of said rear section, and wherein each of said side flaps comprises one rider element extending in longitudinal direction along at least part of said central section.

6. A disposable absorbent article according to claim 1, characterized in that each of said flaps is extensible at least in longitudinal direction along at least part of its length.

7. A disposable absorbent article according to claim 1, characterized in that each of said flaps is elastically extensible at least in longitudinal direction along at least part of its length.

8. A disposable absorbent article according to claim 1, characterized in that said rider elements have a width comprised between 20 mm and 50 mm, as measured between the longitudinal side edge of said absorbent core, and a respective distal edge of said rider element.

9. A disposable absorbent article according to claim 1, characterized in that said disposable absorbent article is adapted to be applied directly to a user'"'"'s body.