Pull-on disposable diaper

• US 8,016,805 B2
• Filed: 07/29/2005
• Issued: 09/13/2011
• Est. Priority Date: 07/30/2004
• Status: Active Grant

• Current Assignee: KAO Corporation
• Original Assignee: KAO Corporation
• Inventors: Sasaki, Jun, Otsuka, Michiko, Kanai, Taeko
• Primary Examiner(s): Stephens; Jacqueline F.
• Application Number:
  US11/192,182
• Publication Number:
  US 20060025746A1
• Time in Patent Office: 2,237 Days
• Field of Search: 60438524-3853, 604393-396
• US Class Current: 604/385.29
• CPC Class Codes: A61F 13/15203 Properties of the article, e.g. stiffness or absorbency chemical aspects A61L15/00
• CPC Class Codes: A61F 13/49011 the elastic means is located at the waist region
• CPC Class Codes: A61F 13/49466 the edge leakage prevention means being at the waist region
• CPC Class Codes: A61F 13/496 in the form of pants or briefs
• CPC Class Codes: A61F 13/51498 Details not otherwise provided for
• CPC Class Codes: A61F 13/539 characterised by the connection of the absorbent layers with each other or with the outer layers
• CPC Class Codes: A61F 2013/49025 having multiple elastic strands
• CPC Class Codes: A61F 2013/49028 with different tensile stress

Abstract

A pull-on disposable diaper 1 has, between a waist opening 5 and leg openings 6, a region 71 having a width of 15 to 35 mm in each of a front section A and a rear section B. The region 71, while worn by a wearer, applies a pressure of 1.1 to 2.5 kPa to the wearer'"'"'s body. With the diaper 1 opened and stretched out, the distance from the longitudinal centerline of the diaper to the widthwise middle of the region 71 in the front section A is 180 to 220 mm, and the distance from the longitudinal centerline of the diaper to the widthwise middle of the region 71 in the rear section B is 180 to 220 mm. A waist portion around the waist opening 5, while worn by a wearer, applies a pressure of 0.3 to 1.5 kPa to the wearer'"'"'s body.

Claims

1. A pull-on disposable diaper having a waist opening and a pair of leg openings,

the diaper comprising a front section and a rear section, and having a first region and a second region at each of said front section and said rear section, said first and second regions being located between the waist opening and the leg openings, wherein said first regions are closer to said waist opening and said second regions are closer to said leg openings, and which, while worn by a wearer, apply a pressure to the wearer'"'"'s body, and

a waist portion around said waist opening, while worn by a wearer, applies a pressure to the wearer'"'"'s body that is less than the pressure to the wearer'"'"'s body applied by said first region but more than the pressure to the wearer'"'"'s body applied by said second region;

wherein upon wearing the diaper, said first regions are located in a region adapted to be applied to the part of a wearer from the iliac crest to the anterior superior iliac spine and said second regions are located in a region adapted to be applied to the part of a wearer below an upper iliac region of the wearer;

wherein said first regions apply a pressure of 1.1 to 2.5 kPa to the wearer'"'"'s body and said waist portion applies a pressure of 0.3 to 1.5 kPa to the wearer'"'"'s body.

2. The pull-on disposable diaper according to claim 1, wherein said first regions apply a pressure of 1.2 to 1.8 kPa to the wearer'"'"'s body.

3. The pull-on disposable diaper according to claim 1, wherein said first regions have a width of 15 to 35 mm.

4. The pull-on disposable diaper according to claim 1, wherein the distance from a longitudinal centerline of the diaper in the opened and stretched out state to a widthwise middle of the first region in the front section is 180 to 220 mm.

5. The pull-on disposable diaper according to claim 1, wherein the distance from a longitudinal centerline of the diaper in the opened and stretched out state to a widthwise middle of the first region in the rear section is 180 to 220 mm.

6. The pull-on disposable diaper according to claim 1, wherein said waist portion applies a pressure of 0.4 to 1.0 kPa to the wearer'"'"'s body.

7. The pull-on disposable diaper according to claim 1, wherein said second regions apply a pressure of 0.2 to 0.8 kPa to the wearer'"'"'s body.

8. The pull-on disposable diaper according to claim 1, wherein said second regions have a width of 40 to 70 mm.

9. The pull-on disposable diaper according to claim 1, further comprising a crotch section and a first set of leg elastic members from said front section that overlaps a second set of leg elastic members from said rear section in the crotch section.

10. A pull-on disposable diaper having a waist opening and a pair of leg openings,

the diaper comprising a front section and a rear section, and having a first region and a second region at each of said front section and said rear section, said first and second regions being located between the waist opening and the leg openings, wherein said first regions are closer to said waist opening and said second regions are closer to said leg openings, and which, while worn by a wearer, apply a pressure to the wearer'"'"'s body,

a waist portion around said waist opening, and

wherein a pressure applied by said first region is higher than a pressure applied by said waist portion, and a pressure applied by said first region is higher than a pressure applied by said second region;

and

wherein upon wearing the diaper, said first regions are located in a region adapted to be applied to the part of a wearer from the iliac crest to the anterior superior iliac spine and said second regions are located in a region adapted to be applied to the part of a wearer below an upper iliac region of the wearer;

wherein said first regions apply a pressure of 1.1 to 2.5 kPa to the wearer'"'"'s body and said waist portion applies a pressure of 0.3 to 1.5 kPa to the wearer'"'"'s body.