# US 2020/0261284 A1 · Ergonomic disposable absorbent garment with absorbent core assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0261284 A1 - Document ID: US20200261284A1 - Status: Published application - Kind: A1 - Application number: 16/865,749 - Filed: 2020-05-04 - Published: 2020-08-20 - Earliest claimed: 2013-03-15 - Assignees: Advanced Absorbent Technologies, LLC - Applicants: Advanced Absorbent Technologies, LLC - Inventors: Donald A. Sheldon; Joseph Howard; William Terenzoni; James Clayton Robinson - Web page: https://patentgrep.com/patent/US20200261284A1 ## CPC - A61F 13/5376: {characterised by the performance of the layer, e.g. acquisition rate, distribution time, transfer time} - A61F 13/49017: {the elastic means being located at the crotch region} - A61F 13/5323: {having absorbent material located in discrete regions, e.g. pockets} - A61F 13/534: having an inhomogeneous composition through the thickness of the pad (A61F13/538, A61F13/539 take precedence) - A61G 17/04: Fittings for coffins - A61G 17/042: {Linings and veneer} - A61G 17/047: {Devices for absorbing decomposition liquid} - A61F 2013/49025: {having multiple elastic strands} - A61F 2013/49036: {having a inelastic zone by deactivating the elastic property} - A61F 2013/530562: {being arranged in discontinuous pattern} - A61F 2013/530715: {by the acquisition rate} - A61F 2013/530722: {by the delayed absorbency} - A61F 2013/530737: {by the absorbent capacity} - A61F 2013/530868: {characterized by the liquid distribution or transport means other than wicking layer (A61F13/537 takes precedence)} - A61F 2013/53445: {from several sheets} - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00) ## Abstract A disposable undergarment is disclosed. The undergarment includes a chassis and an absorbent core assembly. The chassis includes a front section, a crotch section and a rear section and elastic threads in those sections. The absorbent core is located in the crotch section, with portions of it extending into the front and rear sections. The core assembly includes a first or upper section of including plural pockets of a free slow acting but high absorbency SAP, and a second or underlying second section including plural pockets of a free fast acting by lower absorbency SAP. The SAP of the upper and lower sections exhibits various characteristics to facilitate to effective and efficient absorption of a fluid insult into the core assembly. ## Claims ### Claim 1 An absorbent core assembly for an absorbent garment to be worn by a person, said core assembly comprising: a first section formed of at least one layer of porous material configured to permit the migration of liquid therethrough, said at least one layer of porous material of said first section being quilted to form a plurality of first pockets, each of said first pockets being partially filled with a slow acting but high absorption capacity SAP having a CRC of greater than approximately 27 grams of 0.9% saline per gram of SAP; a second section being located below said first section and being formed of a layer of porous material configured to permit the migration of liquid therethrough, said porous material of said second section being quilted to form a plurality of second pockets, each of said second pockets being partially filled with a fast acting but lower absorption capacity SAP, said first section of said absorbent core assembly and said second section of said absorbent core assembly being in fluid communication with each other with said first section of said absorbent core assembly forming a body-facing side disposed confronting the perineum region of the person, whereupon fluid voided by the person flows to said fast acting SAP and to said slow acting SAP, wherein said fluid is absorbed quickly and rapidly by said fast acting SAP, while said slow acting SAP desorbs or takes fluid away from said fast acting SAP as well as absorbing said fluid itself. ### Claim 2 (depends on 1) The absorbent core assembly of claim 1, wherein said slow acting but high absorption capacity SAP has a vortex time greater than approximately 40 seconds. ### Claim 3 (depends on 2) The absorbent core assembly of claim 2, wherein said slow acting but high absorption capacity SAP has a vortex time preferably in the range of approximately 60 to approximately 90 seconds. ### Claim 4 (depends on 1) The absorbent core assembly of claim 1, wherein said slow acting but high absorption capacity SAP has a gel strength, as measured by AAP, greater than or equal to approximately 14 g/g. ### Claim 5 (depends on 1) The absorbent core assembly of claim 1, wherein said slow acting but high absorption capacity SAP has a gel bed permeability or saline flow conductivity between approximately 15 Flux or Darcies and 40 Flux or Darcies. ### Claim 6 (depends on 1) The absorbent core assembly of claim 1, wherein said slow acting but high absorption capacity SAP has a gel bed permeability or saline flow conductivity between approximately 25 Flux or Darcies and 35 Flux or Darcies. ### Claim 7 (depends on 1) The absorbent core assembly of claim 1, wherein said fast acting but lower absorption capacity SAP has a vortex time of approximately 30 seconds or less. ### Claim 8 (depends on 2) The absorbent core assembly of claim 2, wherein said fast acting but lower absorption capacity SAP has a vortex time of approximately 30 seconds or less. ### Claim 9 (depends on 1) The absorbent core assembly of claim 1, wherein said fast acting but lower absorption capacity SAP has a low permeability of less than approximately 15 Flux or Darcies. ### Claim 10 (depends on 9) The absorbent core assembly of claim 9, wherein said fast acting but lower absorption capacity SAP has a low permeability of less than approximately 10 Flux or Darcies. ### Claim 11 (depends on 1) The absorbent core assembly of claim 1, wherein said slow acting but high absorption capacity SAP is free in said first pockets and wherein said fast acting but lower absorption capacity SAP is free in said second pockets. ### Claim 12 (depends on 1) The absorbent core assembly of claim 1, wherein each of said first pockets has a volume and each of said second pockets has a volume, wherein said slow acting but high absorption capacity SAP has a volume in at least some of said first pockets in the range of approximately 25 to 35 percent of said volume of the first pockets, and wherein said fast acting but lower absorption capacity SAP has a volume in at least some of said second pockets in the range of approximately 20 to 30 percent of said volume of said second pockets. ### Claim 13 (depends on 1) The absorbent core assembly of claim 1, wherein said first section comprises a first layer of porous material and a second layer of porous material, each of said first and second layers being configured to permit the migration of a liquid therethrough and being quilted by fixedly secured securement lines to form a plurality of first pockets in said first layer and a plurality of first pockets in said second layer, with each of said first pockets being partially filled with said free, slow acting but high absorption capacity SAP. ### Claim 14 (depends on 13) The absorbent core assembly of claim 13, wherein the volume of SAP in at least some of said first pockets of said first layer is within the range of approximately 25 to 35 percent of the volume of said first pockets of said first layer, and wherein the volume of SAP in at least some of said first pockets of said second layer is within the range of approximately 80-120 percent of the volume or amount of SAP in said first pockets of said first layer and 25 to 35 percent of the volume or capacity of said first pockets of said second layer. ### Claim 15 (depends on 14) The absorbent core assembly of claim 14, wherein said slow acting but high absorption capacity SAP has a vortex time greater than approximately 40 seconds. ### Claim 16 (depends on 15) The absorbent core assembly of claim 15, wherein said slow acting but high absorption capacity SAP has a vortex time preferably in the range of approximately 60 to approximately 90 seconds. ### Claim 17 (depends on 14) The absorbent core assembly of claim 14, wherein said slow acting but high absorption capacity SAP has a gel strength, as measured by AAP, greater than or equal to approximately 14 g/g. ### Claim 18 (depends on 14) The absorbent core assembly of claim 14, wherein said slow acting but high absorption capacity SAP has a gel bed permeability or saline flow conductivity between approximately 15 Flux or Darcies and 40 Flux or Darcies. ### Claim 19 (depends on 14) The absorbent core assembly of claim 14, wherein said slow acting but high absorption capacity SAP has a gel bed permeability or saline flow conductivity between approximately 25 Flux or Darcies and 35 Flux or Darcies. ### Claim 20 (depends on 14) The absorbent core assembly of claim 14, wherein said fast acting but lower absorption capacity SAP has a vortex time of approximately 30 seconds or less. ### Claim 21 (depends on 14) The absorbent core assembly of claim 14, wherein said fast acting but lower absorption capacity SAP has a low permeability of less than approximately 15. Flux or Darcies. ### Claim 22 (depends on 21) The absorbent core assembly of claim 21, wherein said fast acting but lower absorption capacity SAP has a low permeability of less than approximately and 10 Flux or Darcies. ### Claim 23 (depends on 1) The absorbent core assembly of claim 1 additionally comprising an intermediate wicking layer disposed between said first section and said second section. ### Claim 24 (depends on 23) The absorbent core assembly of claim 23, wherein said wicking layer comprises an airlaid material. ### Claim 25 (depends on 23) The absorbent core assembly of claim 23, wherein said first section of said core has a predetermined width and length, wherein said second section of said core has a predetermined width and length, and wherein said intermediate wicking layer has a predetermined width which is less than the predetermined width of said first and second sections and is located between said first and second sections to facilitate the fluid transfer between said first and second sections. ### Claim 26 (depends on 1) A disposable absorbent undergarment comprising the absorbent core assembly of claim 1, and wherein said undergarment is configured to be worn by a person and comprises: a chassis comprising a sheet of breathable material having an inner surface, a front section, a back section, and an crotch section located between said front section and said back section, said front section having a width, a top front edge, and a plurality of elastic threads extending parallel to said top front edge across said width of said front section, said back section having a width, top back edge, and a plurality of elastic threads extending parallel to said top back edge across the width of said back section, said crotch section comprising a pair of central side edges and a plurality of elastic threads extending parallel to said front top edge and said back top edge from one of said pair of central side edges to the other of said pair of central side edges, each of said pair of central side sections comprising a recess forming a respective leg opening for the person, said recesses being spaced apart from each other by a distance which is greater than said predetermined width of said absorbent core assembly, said absorbent core assembly being secured on said inner surface of said chassis at said crotch section between said respective leg openings with plural ones of said plurality of elastic threads of said crotch section at said absorbent core assembly being cut into separated segments at the location of said core so as not to tend to collapse or buckle said core when said garment is worn by the person. ### Claim 27 (depends on 26) The disposable absorbent undergarment of claim 26, wherein said plurality of elastic threads of said front section extend from a point closely adjacent said top front edge to said intermediate section and are closely spaced to one another, whereupon said front section exhibits a minimally puckered appearance, and wherein said plurality of elastic threads of said back section extend from a point closely adjacent said top back edge to said intermediate section and are closely spaced to one another, whereupon said back section exhibits a minimally puckered appearance. ### Claim 28 (depends on 27) The disposable absorbent undergarment of claim 27, wherein said elastic threads are colored so as to be readily visible from the exterior of said undergarment. ### Claim 29 (depends on 26) The disposable absorbent undergarment of claim 26, wherein said undergarment includes a waistband portion adjacent said top front edge and said top back edge, said waistband portion comprising a plurality of waistband elastic threads extending parallel to said front top edge and to said back top edge, said waistband elastic threads having a greater degree of tension or stretchability than said elastic threads in portions of said chassis between said waistband portion and said crotch section.