Disposable Absorbent Article With Substantially Continuously Distributed Absorbent Particulate Polymer Material And Method

• US 20110041999A1
• Filed: 10/28/2010
• Published: 02/24/2011
• Est. Priority Date: 06/18/2007
• Status: Abandoned Application

• Current Assignee: Axel Krause, Harald Hermann Hundorf, Holger Beruda, Horst Blessing, Lutz Stelzig, Matthias Schmidt, Peter Dziezok
• Original Assignee: Axel Krause, Harald Hermann Hundorf, Holger Beruda, Horst Blessing, Lutz Stelzig, Matthias Schmidt, Peter Dziezok
• Inventors: Dziezok, Peter, Schmidt, Mattias, Beruda, Holger, Krause, Axel, Hundorf, Harald Hermann, Blessing, Horst, Stelzig, Lutz
• Application Number:
  US12/914,494
• Publication Number:
  US 20110041999A1
• Time in Patent Office: Days
• US Class Current: 156/276
• CPC Class Codes: A61F 13/15658 Forming continuous, e.g. composite, fibrous webs, e.g. involving the application of pulverulent material on parts thereof
• CPC Class Codes: A61F 13/15699 Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
• CPC Class Codes: A61F 13/5323 having absorbent material located in discrete regions, e.g. pockets
• 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 13/539 characterised by the connection of the absorbent layers with each other or with the outer layers
• CPC Class Codes: A61F 2013/530547 positioned in a separate layer or layers
• CPC Class Codes: A61F 2013/530562 being arranged in discontinuous pattern
• CPC Class Codes: A61F 2013/5395 with thermoplastic agent, i.e. softened by heat
• CPC Class Codes: B32B 2309/02 Temperature
• CPC Class Codes: B32B 2309/08 Dimensions, e.g. volume
• CPC Class Codes: B32B 2310/024 Peltier effect
• CPC Class Codes: B32B 2555/02 Diapers or napkins
• CPC Class Codes: B32B 37/144 using layers with different mechanical or chemical conditions or properties, e.g. layers with different thermal shrinkage, layers under tension during bonding constructional features for tensioning B32B38/1825
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor
• CPC Class Codes: Y10T 428/24851 Intermediate layer is discontinuous or differential
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]

Abstract

A disposable absorbent core comprises first and second absorbent layers each comprising an absorbent particulate polymer material such that the absorbent particulate polymer material is substantially continuously distributed across an absorbent particulate polymer material area. A disposable absorbent article and method for making the absorbent core are also disclosed.

Claims

1. A method of making a disposable absorbent article comprising:

depositing absorbent particulate polymer material on a first substrate in a first pattern to form a first absorbent layer such that the absorbent particulate polymer material is discontinuously distributed on the first substrate;

depositing absorbent particulate polymer material on a second substrate in a second pattern to form a second absorbent layer such that the absorbent particulate polymer material is discontinuously distributed on the second substrate;

depositing a thermoplastic adhesive material on the absorbent particulate polymer material and the first and second substrates to cover the absorbent particulate polymer material on the first and second substrates; and

combining said first and second absorbent layers together such that at least a portion of said thermoplastic adhesive material of said first absorbent layer contacts at least a portion of the thermoplastic adhesive material of said second absorbent layer, the absorbent particulate polymer material is disposed between the first and second substrates in an absorbent particulate polymer material area, and the absorbent particulate polymer material is substantially continuously distributed across the absorbent particulate polymer material area.

2. The method claim 1, wherein:

the step of depositing the absorbent particulate polymer material on the first substrate comprises depositing the absorbent particulate polymer material on the first substrate in a first pattern of land areas and junction areas between the land areas;

the step of depositing the absorbent particulate polymer material on the second substrate comprises depositing the absorbent particulate polymer material on the second substrate in a second pattern of land areas and junction areas between the land areas; and

the step of combining the first and second absorbent layers comprises combining the first and second absorbent layers together such the first and second patterns of absorbent particulate polymer material are offset from one another.

3. The method claim 2, wherein:

the step of depositing the absorbent particulate polymer material on the first substrate further comprises depositing the absorbent particulate polymer material on the first substrate with a rotating drum having a plurality of conical recesses arranged in a first pattern corresponding to the first pattern of land areas and junction areas for delivering the absorbent particulate polymer material to the first substrate; and

the step of depositing the absorbent particulate polymer material on the second substrate further comprises depositing the absorbent particulate polymer material on the second substrate with a rotating drum having a plurality of conical recesses arranged in a second pattern corresponding to the second pattern of land areas and junction areas for delivering the absorbent particulate polymer material to the second substrate.