Extensible absorbent articles

• US 5,683,375 A
• Filed: 08/21/1996
• Issued: 11/04/1997
• Est. Priority Date: 10/29/1990
• Status: Expired due to Term

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Osborn, Thomas W. III, Hines, Letha M., Sugahara, Kazuko
• Primary Examiner(s): Clarke, Robert A.
• Application Number:
  US08/701,210
• Time in Patent Office: 440 Days
• Field of Search: 604/358, 604/385.1, 604/373, 604/385.2, 604/387
• US Class Current: 604/385.16
• CPC Class Codes: A61F 13/511 Topsheet, i.e. the permeable cover or layer facing the skin
• CPC Class Codes: A61F 13/51464 being stretchable or elastomeric
• CPC Class Codes: A61F 13/535 inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes A61F13/5323, A61F13/537 take precedence
• CPC Class Codes: A61F 2013/51322 being elastomeric or stretchable

Abstract

The present invention relates to absorbent articles such as sanitary napkins worn by women. More particularly, the present invention relates to absorbent articles, such as thin sanitary napkins, that are extensible, especially in the longitudinal direction.

Claims

1. An extensible absorbent article for wearing in the crotch region of an undergarment, said absorbent article having a longitudinal centerline, a transverse centerline, an absorbent article initial length, a liquid pervious side, a liquid impervious side, and an absorbent component positioned between said liquid pervious side and said liquid impervious side, wherein:

(a) said absorbent article is capable of extension along said longitudinal centerline of greater than or equal to about 110% of the absorbent article initial length when subjected to a force of less than or equal to about 1,000 grams; and

(b) a 1.0 inch wide strip having a strip initial length is cut from a transverse section that runs parallel to the transverse centerline of said absorbent article is capable of extension of greater than or equal to about 110% of its initial length when subjected to a force of less than or equal to about 400 grams wherein at least a portion of the extension of the strip is provided by at least the material located transversely inboard of the side edges of the absorbent component.

2. The absorbent article of claim 1 wherein said absorbent article is capable of extension to an extended length of greater than or equal to about 110% of its initial length when subjected to a force between greater than or equal to about 50 grams and less than or equal to about 1,000 grams.

3. An extensible absorbent article for wearing in the crotch region of an undergarment, said absorbent article having a longitudinal centerline, a transverse centerline, an absorbent article initial length, a liquid pervious side, a liquid impervious side, and an absorbent component positioned between said liquid pervious side and said liquid impervious side, wherein:

(a) said absorbent article is capable of extension along said longitudinal centerline of greater than or equal to about 110% of the absorbent article initial length when subjected to a force of less than or equal to about 1,000 grams, wherein at least a portion of the extension of the absorbent article is provided by the material located longitudinally inboard of the ends of the absorbent component; and

(b) a 1.0 inch wide strip having a strip initial length is cut from a transverse section that runs parallel to the transverse centerline of said absorbent article is capable of extension of greater than or equal to about 110% of its initial length when subjected to a force of less than or equal to about 400 grams.

4. An extensible absorbent article for wearing in the crotch region of an undergarment, said absorbent article having a longitudinal centerline, a transverse centerline, an absorbent article initial length, a liquid pervious side, a liquid impervious side, and an absorbent component positioned between said liquid pervious side and said liquid impervious side, wherein:

(a) said absorbent article is capable of extension along said longitudinal centerline of greater than or equal to about 110% of the absorbent article initial length when subjected to a force of less than or equal to about 1,000 grams, wherein at least a portion of the extension of the absorbent article is provided by the material located longitudinally inboard of the ends of the absorbent component; and

(b) a 1.0 inch wide strip having a strip initial length is cut from a transverse section that runs parallel to the transverse centerline of said absorbent article is capable of extension of greater than or equal to about 110% of its initial length when subjected to a force of less than or equal to about 400 grams wherein at least a portion of the extension of the strip is provided by at least the material located transversely inboard of the side edges of the absorbent component.