Liquid-absorbent sanitary cellulose product

• US 5,925,439 A
• Filed: 12/17/1997
• Issued: 07/20/1999
• Est. Priority Date: 03/29/1995
• Status: Expired due to Term

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Haubach, Klaus Karl Ferdinand
• Primary Examiner(s): LONEY, DONALD J
• Application Number:
  US08/913,375
• Time in Patent Office: 580 Days
• Field of Search: 428/150, 428/167, 428/172, 428/402, 428/143, 428/168, 428/178, 428/913, 602/56, 602/58, 602/60, 604/358, 604/364, 604/367, 604/368, 604/369, 604/385.1
• US Class Current: 428/178
• CPC Class Codes: A61F 13/5323 having absorbent material located in discrete regions, e.g. pockets
• CPC Class Codes: Y10S 428/913 Material designed to be responsive to temperature, light, moisture
• CPC Class Codes: Y10T 428/24661 Forming, or cooperating to form cells
• CPC Class Codes: Y10T 428/2982 Particulate matter [e.g., sphere, flake, etc.]

Abstract

A liquid-absorbent sanitary cellulose product, in particular a diaper, sanitary napkin or the like, comprises a liquid-proof back layer (2) and an absorbent body (3). A storage layer (5) is arranged between the absorbent body (3) and the back layer (2), this storage layer (5) consisting of a layer of non-woven material (6) profiled in the direction of thickness (D) of the product by chamber-like impressions (7) being formed, into each of which are inserted super-absorbent hydrogel particles (8).

Claims

1. A liquid-absorbent sanitary cellulose product having a direction of thickness, comprising a liquid-proof back layer and an absorbent body, wherein a storage layer is arranged between the absorbent body and the back layer, the storage layer consisting of a layer of non-woven material profiled in the direction of thickness of the product by chamber shaped impressions being formed, the chamber shaped impressions being positioned subjacent to the absorbent body and above the liquid-proof back layer, the chamber shaped impressions further comprising superabsorbent hydrogel particles and surface areas surrounding the chamber shaped impressions.

2. A cellulose product according to claim 1, wherein the chamber shaped impressions are in the shape of calottes.

3. A cellulose product according to claim 1 or claim 2, wherein the volume of the chamber shaped impressions varies in relation to the surface of the cellulose product and depends on the local occurrence of liquid.

4. A cellulose product according to claim 1, wherein the surface areas, surrounding the impressions of the non-woven layer are connected with a covering layer (9).

5. A cellulose product according to claim 4, wherein the covering layer is formed by the absorbent body.

6. A cellulose product according to claim 4, wherein the covering layer is glued together with the layer of non-woven material.

7. A cellulose product according to claim 4, wherein the covering layer is mechanically connected with the layer of non-woven material.

8. A cellulose product according to claim 1, wherein the hydrogel particles are inserted during the embossing of the layer of non-woven material into the impressions by means of an embossing roll with electrostatically charged embossing heads which pick up the hydrogel particles from a reservoir.

9. A cellulose product according to claim 3 wherein the volume of the super-absorbent hydrogel particles varies in relation to the surface of the cellulose product and the local occurrence of liquid.