Disposable absorbent article having improved leg cuffs

• US 5,032,120 A
• Filed: 03/09/1989
• Issued: 07/16/1991
• Est. Priority Date: 03/09/1989
• Status: Expired due to Term

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Allen, Patrick J., Freeland, Mary E.
• Primary Examiner(s): Green, Randall L.
• Assistant Examiner(s): Willse, David H.
• Application Number:
  US07/321,814
• Time in Patent Office: 859 Days
• Field of Search: 604/385.1, 604/385.2
• US Class Current: 604/385.27
• 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 13/495 with faecal cavity
• CPC Class Codes: A61F 13/511 Topsheet, i.e. the permeable cover or layer facing the skin
• CPC Class Codes: A61F 2013/15821 characterized by the apparatus for manufacturing
• CPC Class Codes: A61F 2013/49031 being elastic in longitudinal direction
• CPC Class Codes: A61F 2013/49042 with only stretchable part, i.e. part being not elastic but only extensible with not a full recovery of its original length
• CPC Class Codes: A61F 2013/49076 as "I"-shaped
• CPC Class Codes: A61F 2013/588 on waist panels

Abstract

A disposable absorbent article, such as a diaper, is disclosed. The diaper has two lengthwise extending longitudinal marginal portions, each longitudinal marginal portion having two elastically extensible leg cuffs, a barrier cuff and a gasket cuff. The leg cuffs serve to help contain body exudates within the disposable article. Each leg cuff is elasticized to provide a relatively low ultimate contact force against the skin of the wearer at relatively high elongations. This arrangement provides a diaper with leg cuffs which can be elongated to conform to the shape of the wearer, without causing undue discomfort or irritation to the legs of the wearer. The relatively low ultimate contact force at relatively high elongations may be accomplished either through a low contact force differential material, or through a material which exhibits stress relaxation over a relatively short period of time.

Claims

1. A disposable absorbent article having two transverse waist portions and two longitudinal marginal portions, said article comprising:

a liquid impervious backsheet;

a liquid pervious topsheet at least partially peripherally joined to said backsheet;

an absorbent core intermediate said topsheet and said backsheet; and

at least one leg cuff disposed in each longitudinal marginal portion, each said leg cuff having at least one elastic member defining a cumulative width, wherein said leg cuff is elastically extensible in at least one direction and said leg cuff requires a force less than about 270 grams per centimeter of said cumulative width to elongate said leg cuff throughout the range of from about 75 percent to about 150 percent, and said leg cuff has a differential force per 50 percent increment of elongation less than about 14 grams per centimeter of said cumulative width.

2. A disposable absorbent article according to claim 1, wherein said leg cuff requires a force less than about 270 grams per centimeter of said accumulative width to elongate said leg cuff throughout the range of from about 50 percent to about 350 percent.

3. A disposable absorbent article according to claim 1 or 2 wherein said elastic member comprises a laminate having at least two laminae, wherein one lamina is elastically extensible and one lamina is relatively inelastic.

4. A disposable absorbent article according to claim 3, wherein said elastically extensible lamina is an elastomeric adhesive film.

5. A disposable absorbent article having two transverse waist portions and two longitudinal marginal portions, said article comprising:

a liquid impervious backsheet;

a liquid pervious topsheet at least partially peripherally joined to said backsheet;

an absorbent core intermediate said topsheet and said backsheet; and

at least one leg cuff disposed in each longitudinal marginal portion, each said leg cuff having at least one elastic member defining a cumulative width, wherein said leg cuff is elastically extensible in at least one direction and said leg cuff requires a force less than about 130 grams per centimeter of said cumulative width to elongate said leg cuff throughout the range of from about 75 percent to about 150 percent, and said leg cuff has a differential force per 50 percent increment of elongation less than about 14 grams per centimeter of said cumulative width.

6. A disposable absorbent article according to claim 5, wherein said leg cuffs have a differential force per 50 percent increment of elongation less than about 9 grams per centimeter of said cumulative width.

7. A disposable absorbent article according to claim 6, wherein said elastic member comprises a laminate having three laminae, comprising a central lamina, a first outboard lamina and a second outboard lamina, wherein said central lamina is elastically extensible and said first outboard lamina and said second outboard lamina are relatively inelastic.

8. A disposable absorbent article according to claim 7, wherein said elastically extensible central laminae is an elastomeric adhesive film.

9. A disposable absorbent article according to claim 8, wherein said elastomeric adhesive film is a hot melt adhesive and said first outboard lamina and said second outboard lamina are a polyolefinic nonwoven fabric.

10. A disposable absorbent article according to claim 5 or 8 wherein said at least one leg cuff is selected from the group consisting of a barrier leg cuff, a gasket leg cuff, or both a barrier leg cuff and a gasketing leg cuff.

11. A disposable absorbent article according to claim 5, wherein said leg cuff requires a force less than about 130 grams per centimeter of said cumulative width to elongate said leg cuff throughout the range of from about 50 to about 350 percent.

12. A disposable absorbent article according to claim 11, wherein said leg cuff has a differential force per 50 percent increment of elongation less than about 9 grams per centimeter of said cumulative width.