Underwear-style absorbent article

Patent metadata

Field	Value
Publication number	US-2016106601-A1
Application number	US-201414890809-A
Country	US
Kind code	A1
Filing date	Apr 24, 2014
Priority date	May 13, 2013
Publication date	Apr 21, 2016
Grant date	—

Abstract

In this diaper ( 1 A), both lateral side edge portions ( 2 a, 2 b ) of an outer cover ( 2 ) to which an absorbent assembly ( 3 ) is fixed are bonded together, so as to form a pair of side seals ( 4 ). In a fixing part ( 7 ) where the outer cover ( 2 ) and the absorbent assembly ( 3 ) are fixed, the outer cover ( 2 ) has a weak-functioning region (WT) in which the elastic function is reduced. In each outer lateral side of the weak-functioning region (WT) and in each side seal ( 4 ), a lateral-side adhesion region (IT) and a side-seal adhesion region (OT) are formed, respectively, in each of which elastic members ( 24 ) are fixed between an outer sheet ( 22 ) and an inner sheet ( 23 ) by an adhesive ( 8 ). In each lateral-side adhesion region (IT) and each side-seal adhesion region (OT), the basis weight of the adhesive ( 8 ) in a section (IP, OP) where the elastic member ( 24 ) is arranged is higher than the basis weight of the adhesive ( 8 ) in a section (IN, ON) between a pair of adjacent elastic members ( 24 ), and sections with high and low basis weights in adhesive ( 8 ) alternate repeatedly in the Y direction.

First claim

1 . A pull-on absorbent article comprising:
an outer cover including an outer sheet that constitutes an outer surface, an inner sheet that is arranged on an inner surface side of the outer sheet, and a plurality of thread-form elastic members that are arranged in a stretched state between the outer sheet and the inner sheet; and an absorbent assembly that is fixed to the inner sheet of the outer cover; and both lateral side edge portions of the outer cover's front portion which is arranged on a front side of a wearer are bonded with respective lateral side edge portions of the outer cover's rear portion which is arranged on a rear side of the wearer so as to form a pair of side seals, a waist opening, and a pair of leg openings; wherein: in a fixing part where the outer cover and the absorbent assembly are fixed, the outer cover has a weak-functioning region in which the plurality of elastic members are each divided into a plurality of pieces and the elastic members' elastic function is reduced; in respective outer lateral sides of the weak-functioning region, lateral-side adhesion regions are formed in which the elastic members are fixed between the outer sheet and the inner sheet by an adhesive; in the vicinity of the respective side seals, side-seal adhesion regions are formed in which the elastic members are fixed between the outer sheet and the inner sheet by an adhesive; between the lateral-side adhesion region and the side-seal adhesion region, the elastic members are not fixed between the outer sheet and the inner sheet; and in each of the lateral-side adhesion regions and each of the side-seal adhesion regions, the basis weight of the adhesive in a section where the elastic member is arranged is higher than the basis weight of the adhesive in a section between adjacent elastic members, and sections having a high basis weight and sections having a low adhesive basis weight alternate repeatedly in a longitudinal direction of the pull-on absorbent article.

2 . The pull-on absorbent article according to claim 1 , wherein the elastic members which are each divided into a plurality of pieces in the weak-functioning region are fixed between the outer sheet and the inner sheet by the adhesive.

3 . The pull-on absorbent article according to claim 1 , wherein:
the basis weight of the adhesive in a section, of the lateral-side adhesion region, where the elastic member is arranged is greater than the basis weight of the adhesive in a section, of the side-seal adhesion region, where the elastic member is arranged; and the basis weight of the adhesive in a section, of the lateral-side adhesion region, which is located between adjacent elastic members is greater than the basis weight of the adhesive in a section, of the side-seal adhesion region, which is located between adjacent elastic members.

4 . The pull-on absorbent article according to claim 1 , wherein:
the basis weight of the adhesive in a section, of the lateral-side adhesion region, where the elastic member is arranged is smaller than the basis weight of the adhesive in a section, of the side-seal adhesion region, where the elastic member is arranged; and the basis weight of the adhesive in a section, of the lateral-side adhesion region, which is located between adjacent elastic members is smaller than the basis weight of the adhesive in a section, of the side-seal adhesion region, which is located between adjacent elastic members.

5 . The pull-on absorbent article according to claim 1 , wherein:
the basis weight of the adhesive in a section, of the lateral-side adhesion region, where the elastic member is arranged is the same as the basis weight of the adhesive in a section, of the side-seal adhesion region, where the elastic member is arranged; and the basis weight of the adhesive in a section, of the lateral-side adhesion region, which is located between adjacent elastic members is the same as the basis weight of the adhesive in a section, in the side-seal adhesion region, which is located between adjacent elastic members.

6 . The pull-on absorbent article according to claim 1 , wherein:
the basis weight of the adhesive in a section, of the lateral-side adhesion region, where the elastic member is arranged is the same as the basis weight of the adhesive in a section, of a side-seal inner adhesion region constituting the side-seal adhesion region, where the elastic member is arranged; the basis weight of the adhesive in a section, of the lateral-side adhesion region, where the elastic member is arranged is greater than the basis weight of the adhesive in a section, of a side-seal outer adhesion region constituting the side-seal adhesion region, where the elastic member is arranged; the basis weight of the adhesive in a section, of the lateral-side adhesion region, which is located between adjacent elastic members is the same as the basis weight of the adhesive in a section, of the side-seal inner adhesion region constituting the side-seal adhesion region, which is located between adjacent elastic members; and the basis weight of the adhesive in a section, of the lateral-side adhesion region, which is located between adjacent elastic members is greater than the basis weight of the adhesive in a section, of the side-seal outer adhesion region constituting the side-seal adhesion region, which is located between adjacent elastic members.

7 . The pull-on absorbent article according to claim 1 , wherein:
the outer cover includes a front panel arranged on the wearer's front side in the outer cover, and a rear panel arranged on the wearer's rear side in the outer cover; a waist elasticized portion and a below-waist elasticized portion that are elastic in the lateral direction of the pull-on absorbent article are formed in each of the front panel and the rear panel; and in each of the front panel and the rear panel, the waist elasticized portion is formed more outward in the longitudinal direction of the pull-on absorbent article than the absorbent assembly's end portion in the longitudinal direction.

8 . The pull-on absorbent article according to claim 1 , wherein:
the outer cover includes a front panel arranged on the wearer's front side in the outer cover and a rear panel arranged on the wearer's rear side in the outer cover; a waist elasticized portion and a below-waist elasticized portion that are elastic in the lateral direction of the pull-on absorbent article are formed in each of the front panel and the rear panel; and in each of the front panel and the rear panel, the below-waist elasticized portion is formed more inward in the longitudinal direction of the pull-on absorbent article than the waist elasticized portion.

9 . The pull-on absorbent article according to claim 1 , wherein:
the outer cover includes a front panel arranged on the wearer's front side in the outer cover, and a rear panel arranged on the wearer's rear side in the outer cover; a waist elasticized portion and a below-waist elasticized portion that are elastic in the lateral direction of the pull-on absorbent article are formed in each of the front panel and the rear panel; in the front panel, a plurality of the elastic members are arranged in the waist elasticized portion, and a plurality of the elastic members are arranged in the below-waist elasticized portion; and in the rear panel, a plurality of the elastic members are arranged in the waist elasticized portion, and a plurality of the elastic members are arranged in the below-waist elasticized portion.

10 . The pull-on absorbent article according to claim 1 , wherein:
the outer cover includes a front panel arranged on the wearer's front side in the outer cover, and a rear panel arranged on the wearer's

Assignees

• Kao Corp

Inventors

• Kobayashi Kenji
• Tamura Naoki

Classifications

• A61F13/49012

  the elastic means being elastic panels · CPC title

• A61F13/49058 Primary

  characterised by the modular concept of constructing the diaper · CPC title

• A61F13/539

  characterised by the connection of the absorbent layers with each other or with the outer layers · CPC title

• A61F13/15593

  having elastic ribbons fixed thereto; Devices for applying the ribbons · CPC title

• A61F13/49019

  the elastic means being placed longitudinally, transversely or diagonally over the article · CPC title