Absorbent structure for disposable articles

• US 4,806,408 A
• Filed: 11/03/1986
• Issued: 02/21/1989
• Est. Priority Date: 03/01/1985
• Status: Expired due to Term

• Current Assignee: Fort James France
• Original Assignee: Béghin-Say SA
• Inventors: Ruppel, Remy, Pierre, Michel, Brellmann, Jean
• Primary Examiner(s): Epstein, Henry F.
• Application Number:
  US06/932,478
• Time in Patent Office: 841 Days
• Field of Search: 428/534, 428/76, 428/323, 428/138
• US Class Current: 428/76
• CPC Class Codes: A61F 13/4702 having a reinforcing member
• CPC Class Codes: A61F 13/534 having an inhomogeneous composition through the thickness of the pad A61F13/538, A61F13/539 take precedence; homogeneous cores with tissue wrapping A61F13/53
• CPC Class Codes: A61F 2013/530481 having superabsorbent materials, i.e. highly absorbent polymer gel materials
• CPC Class Codes: A61F 2013/53051 being only in particular parts or specially arranged
• CPC Class Codes: A61F 2013/53445 from several sheets
• CPC Class Codes: A61F 2013/53908 with adhesive
• CPC Class Codes: Y10T 428/239 Complete cover or casing
• CPC Class Codes: Y10T 428/24331 including nonapertured component
• CPC Class Codes: Y10T 428/25 Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• CPC Class Codes: Y10T 428/31978 Cellulosic next to another cellulosic

Abstract

An absorbent structure for disposable articles, comprising between a permeable sheet (1) and an impermeable sheet (7), a pad comprising successively at least one fibre layer (2, 12, 22, 32), an internal reinforcement sheet permeable to liquids and an absorbent layer provided with improved retention additive particles is characterized in that the internal reinforcement (3, 13, 23, 33) is a non-woven material maintained by gluing (4, 14, 24, 34) to said absorbent layer (5-6, 15-16, 25, 35-36).

Claims

1. An absorbent structure for hygienic disposable articles comprising a permeable sheet, an impermeable sheet, and a pad between said permeable and impermeable sheets, said pad comprising successively at least a first layer of fluffed cellulosic material that does not contain improved retention additive;

an internal reinforcement layer permeable to liquids made of a non-woven material resistant to moisture and liquid, and an absorbent layer provided with improved liquid-retention additive particles, said internal reinforcement sheet being glued to said absorbent layer.

2. An absorbent structure according to claim 1 wherein said absorbent layer consists of a fiber layer, the additive particles being deposited on the surface over all or part of said layer adjacent to the internal reinforcement sheet.

3. An absorbent structure according to claim 2 wherein the reinforcement layer envelops the absorbent layer.

4. An absorbent structure according to claim 1 wherein the absorbent layer consists essentially of an improved liquid-retention additive and the reinforcement layer is glued against the impermeable sheet.

5. An absorbent structure according to claim 1 wherein the absorbent layer consists of a fiber layer incorporating improved liquid-retention additive particles.

6. An absorbent structure according to claim 1 wherein the glue is a hot melt glue.

7. An absorbent structure according to claim 1 wherein the reinforcement sheet is a grid.

8. An absorbent structure according to claim 1 wherein the reinforcement sheet is a web of bonded thermoplastic fibers.