Absorbent structure with reservoir

• US 4,501,586 A
• Filed: 03/11/1983
• Issued: 02/26/1985
• Est. Priority Date: 11/17/1980
• Status: Expired due to Term

• Current Assignee: McNeil-PPC Incorporated (Johnson & Johnson)
• Original Assignee: Personal Products Co. (Johnson & Johnson)
• Inventors: Holtman, Dennis C.
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): Vinyard, Sherri E.
• Application Number:
  US06/474,396
• Time in Patent Office: 718 Days
• Field of Search: 604/358, 604/385, 604/346-348, 604/354, 604/379, 604/368, 604/380
• US Class Current: 604/380
• CPC Class Codes: A61F 13/533 having discontinuous areas of compression
• 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 13/536 having discontinuous areas of compression
• CPC Class Codes: A61F 2013/51409 being a film
• CPC Class Codes: A61F 2013/530131 being made in fibre but being not pulp
• CPC Class Codes: A61F 2013/530437 having a part with elevated absorption means
• CPC Class Codes: A61F 2013/530445 by defining a target or acquisition or vulnerability zone

Abstract

The present invention provides an absorbent structure comprising a moisture-impermeable backing, an absorbent batt and a moisture-permeable cover covering at least the side opposite the moisture-impermeable backing. The absorbent batt is of loosely-compacted, cellulosic fibers and is provided with a reservoir having a capacity of at least 10 cc. The reservoir is formed by compression of the fibers in the reservoir zone and is located so that the product, when worn, retains the proper shape.

Claims

1. An absorbent structure suitable for absorption of body fluids comprising a moisture-impermeable backing sheet;

an absorbent, loosely-compacted, cellulosic fibrous batt, superimposed on said backing sheet; and

a moisture-permeable fabric cover, covering at least the side of said absorbent batt opposite said backing sheet, said absorbent batt being provided with a reservoir having a capacity of at least 10 cc, covers at least one square inch but does not cover more than 25% of the surface of said absorbent batt said reservoir being situated between the center and one transverse end and being formed by compression of the cellulosic fibrous batt such that the depth of said reservoir is more than one-half the thickness of said absorbent batt.

2. The absorbent structure of claim 1 wherein the base of said reservoir is a densified region of the fibers of the fibrous batt.

3. An adult incontinence device substantially rectangular in shape comprising a moisture-impermeable backing sheet;

an absorbent, loosely-compacted, cellulosic fibrous batt superimposed on said backing sheet; and

a moisture-permeable fabric cover, covering at least the side of said absorbent batt opposite said backing sheet, said absorbent batt being provided with a reservoir covering at least one square inch of the surface of the batt but not more than 25% of the surface and having a capacity of at least 10 cc, said reservoir being situated between the center and one transverse end of the absorbent batt and being formed by compression of the cellulosic fibrous batt to provide a depth more than one-half the thickness of the absorbent batt.

4. The adult incontinence device of claim 3 wherein said backing sheet is provided with an adhesive layer which functions as an adhesive strip for securement of the device when worn.

5. A disposable diaper comprising a moisture-impermeable backing sheet;

an absorbent, loosely-compacted, cellulosic fibrous batt, superimposed on said backing sheet; and

a moisture-permeable facing superimposed on the side of the fibrous batt opposite said backing sheet, said absorbent batt being provided with a reservoir covering at least one square inch of the surface of the batt but not more than 25% of the surface and having a capacity of at least 10 cc, said reservoir being situated between the center and one transverse end of the absorbent batt and being formed by compression of the cellulosic fibrous batt to provide a depth in the reservoir of more than one-half the thickness of the absorbent batt.

6. The disposable diaper of claim 5 wherein the reservoir has as its base a densified fibrous region.