# US 2013/0158458 A1 · Manufacturing method for wound dressings > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0158458 A1 - Document ID: US20130158458A1 - Status: Published application - Kind: A1 - Application number: 13/331,295 - Filed: 2011-12-20 - Published: 2013-06-20 - Earliest claimed: 2011-12-20 - Assignees: Sarasota Medical Products, Inc. - Inventors: Walter F. Leise, JR. - Web page: https://patentgrep.com/patent/US20130158458A1 ## CPC - A61F 13/0279: {by attaching individual patches on moving webs} - A61F 13/0289: {manufacturing of adhesive dressings} - B32B 37/1284: {Application of adhesive} - A61F 2013/00697: {elastomer-, e.g. rubber- based} - A61F 2013/00748: {with hydrocolloids or superabsorbers} - B32B 37/0053: {Constructional details of laminating machines comprising rollers; Constructional features of the rollers} - B32B 38/0004: {Cutting, tearing or severing, e.g. bursting; Cutter details (cutting in general B26D; laminating combined with punching or perforating B32B38/04; removing all or part of the layers B32B38/10; cutting in combination with laying up and registration B32B38/185 takes precedence)} - B32B 2317/12: Paper, e.g. cardboard - B32B 2556/00: Patches, e.g. medical patches, repair patches - Y10T 156/1074: Separate cutting of separate sheets or webs - 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) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A wound dressing having a thin barrier layer of soft, pliant adhesive material with a flexible cover layer extending along one side of the adhesive layer and a removable release sheet on the opposite side is disclosed. The adhesive material has a center and border surrounding the center such that the adhesive is contoured. A method for making the contoured dressing using a gear pump and a laminating roller having a predetermined softness and firmness is also disclosed. ## Claims ### Claim 1 A method of making a contoured dressing, comprising the steps of: a. Depositing an adhesive in a specified shape and predetermined thickness using a gear pump onto a flexible silicone release web removably supported on horizontal platen member; b. laminating the deposited adhesive with a protective cover using a laminating roller with a predetermined softness and firmness to feather the edges of the adhesive to infinity; and c. forming a contoured dressing having a center and a bordered edge; and d. optionally, cutting and packaging the contoured dressing from the laminated film and release paper. ### Claim 2 (depends on 1) The method of claim 1, wherein the adhesive is comprised of at least one physically cross-linked elastomer selected from the group consisting of styrene-olefin-styrene block copolymer, butyl rubber and ethylene-propylene block copolymers, forming a continuous phase and at least one hydrocolloid dispersed therein, said hydrocolloid being selected from the group consisting of sodium carboxymethyl cellulose, pectin, gelatin, gaur gum, xantham gum, karaya gum, sodium polyacrylate and mixtures thereof, said compositions also containing at least one hydrocarbon tackifier selected from the group consisting of polymers and copolymers of alpha-pinene, beta-pinene, dicylopentadiene and also containing one or more hydrogenated esters of rosin. ### Claim 3 (depends on 1) The method of claim 1 wherein the adhesive is heated. ### Claim 4 (depends on 1) The method of claim 1, wherein the protective cover layer is selected from the group consisting of polyurethane, polyethylene, a woven fabric, a nonwoven fabric, or a flexible polymeric foam. ### Claim 5 (depends on 1) The method of claim 1, wherein the adhesive is deposited in a shape selected from the group consisting of round, oval, trapezoidal, and rectangular. ### Claim 6 (depends on 1) The method of claim 1, wherein the adhesive wafer is deposited with perforations. ### Claim 7 (depends on 1) The method of claim 1, wherein the roller has a firmness of between 10 shore A and 90 shore A. ### Claim 8 (depends on 7) The method of claim 7, wherein the roller has a firmness of between 20 shore A and 80 shore A. ### Claim 9 (depends on 8) The method of claim 8, wherein the roller has a firmness between 30 shore A and 60 shore A. ### Claim 10 A contoured dressing formed by the method of a. depositing an adhesive in a specified shape and predetermined thickness using a gear pump onto a flexible silicone release web removably supported on lower horizontal platen member; b. laminating the deposited adhesive with a protective cover using a laminating roller with a predetermined softness and firmness to feather the edges of the adhesive to infinity; and c. forming a contoured dressing having a center and a bordered edge; and d. optionally, cutting and packaging the contoured dressing from the laminated film and release paper. ### Claim 11 (depends on 10) The method of claim 10, wherein the adhesive comprised of at least one physically cross-linked elastomer selected from the group consisting of styrene-olefin-styrene block copolymer, butyl rubber and ethylene-propylene block copolymers, forming a continuous phase and at least one hydrocolloid dispersed therein, said hydrocolloid being selected from the group consisting of sodium carboxymethyl cellulose, pectin, gelatin, gaur gum, xantham gum, karaya gum, sodium polyacrylate and mixtures thereof, said compositions also containing at least one hydrocarbon tackifier selected from the group consisting of polymers and copolymers of alpha-pinene, beta-pinene, dicylopentadiene and also containing one or more hydrogenated esters of rosin. ### Claim 12 (depends on 10) The method of claim 10, wherein the adhesive is heated. ### Claim 13 (depends on 10) The method of claim 10, wherein the protective cover layer is selected from the group consisting of polyurethane, polyethylene, a woven fabric, a nonwoven fabric, or a flexible polymeric foam. ### Claim 14 (depends on 10) The method of claim 10, wherein the adhesive is deposited in a shape selected from the group consisting of round, oval, trapezoidal, and rectangular. ### Claim 15 (depends on 10) The method of claim 10, wherein the adhesive wafer is deposited with perforations. ### Claim 16 (depends on 10) The method of claim 10, wherein the roller has a firmness of between 10 shore A and 90 shore A. ### Claim 17 (depends on 16) The method of claim 16, wherein the roller has a firmness of between 20 shore A and 80 shore A. ### Claim 18 (depends on 17) The method of claim 17, wherein the roller has a firmness between 30 shore A and 60 shore A.