Disposable absorbent sanitary article

• US 6,682,515 B1
• Filed: 11/17/2000
• Issued: 01/27/2004
• Est. Priority Date: 11/19/1999
• Status: Expired due to Term

• Current Assignee: Unicharm Corporation
• Original Assignee: Unicharm Corporation
• Inventors: Mizutani, Katsumi, Mukai, Hirotomo, Ono, Yoshio
• Primary Examiner(s): Lo, Weilun
• Assistant Examiner(s): ANDERSON, CATHARINE L
• Application Number:
  US09/715,885
• Time in Patent Office: 1,166 Days
• Field of Search: 604/385-4-3
• US Class Current: 604/385.27
• CPC Class Codes: A61F 13/4753 the barrier being not integral with the topsheet or backsheet
• CPC Class Codes: A61F 13/49017 the elastic means being located at the crotch region
• CPC Class Codes: A61F 13/4942 the barrier not being integral with the top- or back-sheet
• CPC Class Codes: A61F 13/505 with separable parts, e.g. combination of disposable and reusable parts, A61F13/20, A61F13/49003 take precedence; supporting or fastening means A61F13/56; belts or the like A61F13/64
• CPC Class Codes: A61F 13/5611 using fastening strips, e.g. adhesive, on the undergarment-facing side

Abstract

A disposable absorbent sanitary article that includes sheets to form a pair of flaps and a pair of flaps. The sheets are folded along flap fold lines back onto themselves, respectively, to form free edge portions of the respective pairs of flaps. Elastic members are secured under tension to the sheets inside the respective free edge portions and are spaced from the fold lines at least by 1 mm, respectively.

Claims

1. A disposable absorbent article comprising:

a first surface configured to face and contact a wearer'"'"'s skin;

a second surface opposed to said first surface;

an absorbent element for absorbing and retaining body fluids, said absorbent element being positioned between said first and second surfaces; and

a plurality of pairs of flaps configured to be elastically placed against the wearer'"'"'s skin,

each of said plurality of pairs of flaps having a transverse direction and a longitudinal direction orthogonal to said transverse direction and being formed from a sheet that extends outward from said absorbent element,

each of said plurality of pairs of flaps being folded transversely so as to wrap around transverse edges of the absorbent article and be superimposed on transverse edge portions of both the first and second surfaces,

each of said plurality of pairs of flaps further including an elastic member wrapped by said sheet in a tensioned state along said longitudinal direction,

each of said plurality of pairs of flaps further having a proximal edge portion adjacent said absorbent element and an elastically stretchable free edge portion spaced apart from said absorbent element with said sheet being folded at the free edge portion about a fold line to provide a folded portion at said free edge portion that extends along said longitudinal direction, with said elastic members wrapped within the folded portions of said of the plurality of pairs of flaps and an unobstructed gap provided between the elastic members and fold line of each flap which unobstructed gaps allow the free edge portion of the flaps to collapse against the elastic members,

said elastic member of each of said plurality of pairs of flaps being positioned at least 1 mm apart from a respective fold line thereof toward said proximal edge portion and bonded to the inner surface of said sheet.

2. The sanitary absorbent article according to claim 1, wherein each of said elastic members is spaced apart from an adjacent fold line by at least about 1 to 20 mm.

3. The absorbent article according to claim 1, wherein portions of said plurality of pairs of flaps extend laterally outward from said absorbent element and function as a pair of body fluid barrier flaps.

4. The absorbent article according to claim 1, wherein said sheet comprises a nonwoven fabric that has a basis of about 15 to 50 g/m².

5. The sanitary absorbent article according to claim 1, wherein said absorbent article comprises any one of a disposable diaper, a urine pad, training pants, a menstruation pad and a panty liner.