US 12,115,045 B2
Absorbent cores and methods for forming absorbent cores
Michael B. Venturino, Appleton, WI (US)
Assigned to Kimberly-Clark Worldwide, Inc., Neenah, WI (US)
Filed by Kimberly-Clark Worldwide, Inc., Neenah, WI (US)
Filed on Feb. 16, 2023, as Appl. No. 18/110,417.
Application 18/110,417 is a continuation of application No. 17/381,350, filed on Jul. 21, 2021, granted, now 11,607,349.
Application 17/381,350 is a continuation of application No. 16/086,038, granted, now 11,135,097, previously published as PCT/US2016/025190, filed on Mar. 31, 2016.
Prior Publication US 2023/0190539 A1, Jun. 22, 2023
Int. Cl. A61F 13/15 (2006.01); A61F 13/535 (2006.01); A61F 13/53 (2006.01)
CPC A61F 13/15634 (2013.01) [A61F 13/15764 (2013.01); A61F 13/535 (2013.01); A61F 2013/15406 (2013.01); A61F 2013/1591 (2013.01); A61F 2013/530481 (2013.01); A61F 2013/530802 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of forming an absorbent core, the method comprising:
moving a foraminous forming surface in a machine direction;
creating a pressure differential across the foraminous forming surface;
advancing a base carrier sheet on the foraminous forming surface in the machine direction;
applying a first adhesive and a first quantity of pulp fluff onto the base carrier sheet; and
depositing a matrix of adhesive and superabsorbent material directly onto the first adhesive and the first quantity of pulp fluff, the matrix of adhesive and superabsorbent material comprising a first quantity of superabsorbent material and a second adhesive, the first quantity of superabsorbent material being dispensed from a superabsorbent material delivery conduit and the second adhesive comprising a fibrous adhesive dispensed from one or more application nozzles, the application nozzles located adjacent to the superabsorbent material delivery conduit at least partially in the machine direction and wherein the fibrous second adhesive and the first quantity of superabsorbent material mix prior to deposition onto the first adhesive and the first quantity of pulp fluff.