# US 2001/0034508 A1 · Composite and absorbent article comprising ultrasonics-friendly adhesive, and method of making same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2001/0034508 A1 - Document ID: US20010034508A1 - Status: Published application - Kind: A1 - Application number: 09/801,526 - Filed: 2001-03-08 - Published: 2001-10-25 - Earliest claimed: 2000-03-10 - Assignees: Kimberly-Clark Worldwode, Inc. - Inventors: Chinmay Suresh Betrabet; Davis Dang Hoang Nhan - Web page: https://patentgrep.com/patent/US20010034508A1 ## CPC - A61F 13/539: characterised by the connection of the absorbent layers with each other or with the outer layers - 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} - A61L 15/58: Adhesives - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - 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) - A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM ## Abstract The present invention is directed to reducing the build up or accretion of adhesive, alone or in combination with other materials, on the surfaces of equipment used to ultrasonically treat a workpiece (e.g., ultrasonically bonding various components or pieces to one another.) Thus the invention encompasses composites, absorbent products, and methods of making said composites and products where an adhesive composition having certain identified properties is used to reduce the build up or accretion of the adhesive on ultrasonic bonding equipment. In one embodiment of the invention, a composite includes an adhesive having a capillary-viscosity value of about 7 Pas.sec or greater and a Shore-OO-Hardness value of about 65 or greater, whereby the relative accretion value is less than about 1, and more particularly less than about 0.5. ## Claims ### Claim 1 A composite comprising a first piece; a second piece; and an adhesive composition used to bond a portion of the first piece to a portion of the second piece; wherein the adhesive composition has a capillary-viscosity value of about 7 Pas.sec or greater and a Shore-OO-Hardness value of about 65 or greater, and wherein the relative accretion value is less than about 1. ### Claim 2 (depends on 1) The composite of claim 1 wherein the relative accretion value is less than about 0.5. ### Claim 3 (depends on 1) The composite of claim 1 wherein the capillary-viscosity value is about 9 Pas.sec or greater and the Shore-OO-Hardness value is about 90 or greater, and wherein the relative accretion value is less than about 0.1. ### Claim 4 (depends on 3) The composite of claim 3 wherein the relative accretion value is less than about 0.05. ### Claim 5 (depends on 1) The composite of claim 1 wherein the first piece and the second piece constitute a single piece, and wherein the adhesive composition is used to bond one part of the single piece to a second part of the single piece. ### Claim 6 A composite comprising a first piece; a second piece; at least one elastic strand or elastic ribbon; and an adhesive composition bonding at least a portion of each elastic strand or elastic ribbon to a portion of the first piece and a portion of the second piece; wherein the adhesive composition has a capillary-viscosity value of about 7 Pas.sec or greater and a Shore-OO-Hardness value of about 65 or greater, wherein the relative accretion value is less than about 1, and wherein the creep-resistance value is about 30% or greater. ### Claim 7 (depends on 6) The composite of claim 6 wherein the relative accretion value is less than about 0.5, and wherein the creep-resistance value is about 50% or greater. ### Claim 8 (depends on 6) The composite of claim 6 wherein the adhesive composition has a capillary-viscosity value of about 9 Pas.sec or greater and a Shore-OO-Hardness value of about 90 or greater, wherein the relative accretion value is less than about 0.1, and wherein the creep-resistance value is about 30% or greater. ### Claim 9 (depends on 8) The composite of claim 8 wherein the relative accretion value is less than about 0.05, and wherein the creep-resistance value is about 50% or greater. ### Claim 10 (depends on 6) The composite of claim 6 wherein the first piece and the second piece constitute a single piece, and wherein the adhesive composition is used to bond a portion of each elastic strand or elastic ribbon to at least one part of the single piece. ### Claim 11 (depends on 1, 6) An absorbent product comprising a topsheet; a backsheet; an absorbent core disposed between the topsheet and the backsheet; and the composite of claims 1, 6, or 10; wherein the composite is attached to, or an integral part of, the topsheet, the backsheet, or both. ### Claim 12 A method of making a composite comprising the steps of providing a first piece; providing a second piece; and attaching at least a portion of the first piece to at least a portion of the second piece using an adhesive composition; wherein the adhesive composition has a capillary-viscosity value of about 7 Pas.sec or greater and a Shore-OO-Hardness value of about 65 or greater, and wherein the relative accretion value is less than about 1. ### Claim 13 (depends on 12) The method of claim 12 wherein the relative accretion value is less than about 0.5. ### Claim 14 (depends on 12) The method of claim 12 wherein the adhesive composition has a capillary-viscosity value of about 9 Pas.sec or greater and a Shore-OO-Hardness value of about 90 or greater, and wherein the relative accretion value is less than about 0.1. ### Claim 15 (depends on 14) The method of claim 14 wherein the relative accretion value is less than about 0.05. ### Claim 16 (depends on 12) The method of claim 12 wherein the first piece and the second piece constitute and a single piece, and wherein the adhesive composition is used to attach at least a portion of one part of the single piece to at least a portion of another part of the single piece. ### Claim 17 (depends on 12) A method of making an absorbent product, the method comprising the steps of providing a composite prepared by the method of claim 12; exposing at least a part of the composite to ultrasonic energy in a subsequent processing step; and before, during, or after the processing step in which at least a part of the composite is exposed to ultrasonic energy, attaching at least a portion of the composite to at least a portion of a backsheet, a topsheet, or portions of both a backsheet and a topsheet. ### Claim 18 (depends on 14, 16, 17) The method of claim 17 wherein the provided composite is prepared by the method of claim 14 or 16. ### Claim 19 A method of making a composite comprising the steps of providing a first piece; providing a second piece; providing at least one elastomeric strand or elastomeric ribbon; and attaching at least a portion of the strand or ribbon to at least a portion of the first piece and at least a portion of the second piece using an adhesive composition; wherein the adhesive composition has a capillary-viscosity value of about 7 Pas.sec or greater and a Shore-OO-Hardness value of about 65 or greater, wherein the relative accretion value is less than about 1, and wherein the creep-resistance value is about 30% or greater. ### Claim 20 (depends on 19) The method of claim 19 wherein the relative accretion value is less than about 0.5 and the creep-resistance value is about 50% or greater. ### Claim 21 (depends on 19) The method of claim 19 wherein the adhesive composition has a capillary-viscosity value of about 9 Pas.sec or greater and a Shore-OO-Hardness value of about 90 or greater, wherein the relative accretion value is less than about 0.1, and wherein the creep-resistance value is about 30% or greater. ### Claim 22 (depends on 21) The method of claim 21 wherein the relative accretion value is less than about 0.01 and the creep-resistance value is about 50% or greater. ### Claim 23 (depends on 19) The method of claim 19 wherein the first piece and the second piece constitute one and the same piece, and wherein the adhesive composition is used to bond a portion of each elastic strand or elastic ribbon to at least one part of the single piece. ### Claim 24 (depends on 19) A method of making an absorbent product, the method comprising the steps of providing a composite prepared by the method of claim 19; exposing at least a part of the composite to ultrasonic energy in a subsequent processing step; and before, during, or after the processing step in which at least a part of the composite is exposed to ultrasonic energy, attaching at least a portion of the composite to at least a portion of a backsheet, a topsheet, or portions of both a backsheet and a topsheet. ### Claim 25 (depends on 14, 21, 23) The method of claim 14 wherein the provided composite is prepared by the method of claim 21 or 23. ### Claim 26 A method of making a composite or an absorbent product, the method comprising the steps of: providing a candidate adhesive composition; determining the accretion value of the candidate adhesive composition; determining the accretion value of an adhesive composition presently used to make a composite or an absorbent product; and selecting the candidate adhesive composition as a substitute for the presently-used adhesive composition if the relative accretion value is less than 1, wherein the relative accretion value is determined by dividing the accretion value of the candidate adhesive composition by the accretion value of the presently-used adhesive composition. ### Claim 27 A method of making a composite or an absorbent product, the method comprising the steps of: providing a candidate adhesive composition; measuring the capillary-viscosity value of the candidate adhesive composition; measuring the Shore-OO-Hardness value of the candidate adhesive composition; and selecting the candidate adhesive composition for use in making the composite or absorbent product if the candidate adhesive has a capillary-viscosity value of about 7 Pas.sec or greater and a Shore-OO-Hardness value of about 65 or greater. ### Claim 28 (depends on 27) The method of claim 27 wherein the candidate adhesive composition is selected for use in making the composite or absorbent product if the candidate adhesive has a capillary-viscosity value of about 9 Pas.sec or greater and a Shore-OO-Hardness value of about 90 or greater. ### Claim 29 A method of making a composite or an absorbent product, the method comprising the steps of: providing a candidate adhesive composition; measuring the capillary-viscosity value of the candidate adhesive composition; measuring the hardness value of the candidate adhesive composition; and selecting the candidate adhesive composition as a substitute for another adhesive composition used in constructing a composite or absorbent product if the measured capillary-viscosity value and hardness value of the candidate adhesive composition correspond to a relative accretion value of less than 1, wherein the relative accretion value is determined by dividing the accretion value of the candidate adhesive composition by the accretion value of the substituted-for adhesive composition.