# US 2020/0399803 A1 · Fibrous Structures > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0399803 A1 - Document ID: US20200399803A1 - Status: Published application - Kind: A1 - Application number: 17/015,399 - Filed: 2020-09-09 - Published: 2020-12-24 - Earliest claimed: 2007-07-17 - Assignees: The Procter & Gamble Company - Applicants: The Procter & Gamble Company - Inventors: David William Cabell; Paul Dennis Trokhan; Steven Lee Barnholtz - Web page: https://patentgrep.com/patent/US20200399803A1 ## CPC - D04H 5/02: strengthened or consolidated by mechanical methods, e.g. needling (needling machines D04H18/00) - D04H 1/425: Cellulose series - D04H 1/435: Polyesters - D04H 1/43825: {Composite fibres} - D04H 1/43835: {Mixed fibres, e.g. at least two chemically different fibres or fibre blends} - D04H 1/732: by fluid current, e.g. air-lay - D21H 13/10: Organic non-cellulose fibres - D21H 27/002: {Tissue paper; Absorbent paper (D21H21/22, D21H27/02, D21H27/20 take precedence; toilet paper A47K10/00; absorbent pads for physiological fluids A61L15/16; making on paper-making machines D21F11/00)} - Y10T 428/268: Monolayer with structurally defined element - D04H: MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL (weaving D03; knitting D04B; braiding D04C; net-making D04G; sewing D05B; tufting D05C; finishing non-woven fabrics D06); FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING {; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION}(non-woven fabrics having an intermediate or external layer of a different kind, e.g. of woven fabric, B32B) - D21H: PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Fibrous structures containing a mixture of three or more different fibrous elements (filaments and/or fibers) are provided. ## Claims ### Claim 1 A non-wet-laid layered fibrous structure comprising at least three layers, wherein the fibrous structure comprises: a. a first layer comprising a non-thermoplastic first fibrous element comprising a hydroxyl polymer selected from the group consisting of: polyvinyl alcohol, polyvinyl alcohol derivatives, and mixtures thereof, wherein the first fibrous element exhibits a length of 10.16 cm or greater and a length to average diameter ratio of greater than 2000, wherein the first fibrous element is a first monocomponent filament; b. a second fibrous element different from the first fibrous element, wherein the second fibrous element exhibits a length of less than 5.08 cm, wherein the second fibrous element is a wood pulp fiber; and c. a third layer comprising a third fibrous element different from the first and second fibrous elements, wherein the third fibrous element comprising a hydroxyl polymer selected from the group consisting of: starch, starch derivatives, and mixtures thereof, wherein the third fibrous element exhibits a length of 10.16 cm or greater and a length to average diameter ratio of greater than 2000, wherein the third fibrous element is a second monocomponent filament. ### Claim 2 (depends on 1) The non-wet-laid layered fibrous structure according to claim 1 wherein the hydroxyl polymer of the first fibrous element exhibits a weight average molecular weight of greater than about 10,000 g/mol. ### Claim 3 (depends on 1) The non-wet-laid layered fibrous structure according to claim 1 wherein the first fibrous element exhibits an average diameter of less than 25 μm. ### Claim 4 (depends on 1) The non-wet-laid layered fibrous structure according to claim 1 wherein the first fibrous element exhibits an average diameter of less than 25 μm to greater than 1 μm. ### Claim 5 (depends on 1) The non-wet-laid layered fibrous structure according to claim 1 wherein the hydroxyl polymer of the third fibrous element exhibits a weight average molecular weight of greater than about 10,000 g/mol. ### Claim 6 (depends on 5) The non-wet-laid layered fibrous structure according to claim 5 wherein the hydroxyl polymer of the third fibrous element exhibits a weight average molecular weight of greater than about 100,000 g/mol. ### Claim 7 (depends on 1) The non-wet-laid layered fibrous structure according to claim 1 wherein the hydroxyl polymer of the third fibrous element exhibits a weight average molecular weight of from about 10,000 g/mol to about 40,000,000 g/mol. ### Claim 8 (depends on 1) The non-wet-laid layered fibrous structure according to claim 1 wherein the third fibrous element exhibits an average diameter of less than 25 μm. ### Claim 9 (depends on 8) The non-wet-laid layered fibrous structure according to claim 8 wherein the third fibrous element exhibits an average diameter of less than 10 μm. ### Claim 10 (depends on 1) The non-wet-laid layered fibrous structure according to claim 1 wherein the third fibrous element exhibits an average diameter of less than 25 μm to greater than 1 μm. ### Claim 11 A non-wet-laid layered fibrous structure comprising at least three layers, wherein the fibrous structure comprises: a. a first layer comprising a non-thermoplastic, non-cellulose-containing, first fibrous element comprising a starch filament that exhibits a length of 10.16 cm or greater; b. a second layer comprising a second fibrous element different from the first fibrous element, wherein the second fibrous element exhibits a length of less than 5.08 cm, wherein the second fibrous element is a wood pulp fiber; and c. a third layer comprising a third fibrous element different from the first and second fibrous elements, wherein the third fibrous element comprising a polyvinyl alcohol filament. ### Claim 12 (depends on 11) The non-wet-laid layered fibrous structure according to claim 11 wherein the starch filament comprises a starch that exhibits a weight average molecular weight of greater than about 10,000 g/mol. ### Claim 13 (depends on 12) The non-wet-laid layered fibrous structure according to claim 12 wherein the starch filament comprises a starch that exhibits a weight average molecular weight of greater than about 100,000 g/mol. ### Claim 14 (depends on 11) The non-wet-laid layered fibrous structure according to claim 11 wherein the starch filament comprises a starch that exhibits a weight average molecular weight of greater than about 10,000 g/mol to about 40,000,000 g/mol. ### Claim 15 (depends on 11) The non-wet-laid layered fibrous structure according to claim 11 wherein the starch filament exhibits an average diameter of less than 25 μm. ### Claim 16 (depends on 15) The non-wet-laid layered fibrous structure according to claim 15 wherein the starch filament exhibits an average diameter of less than 10 μm. ### Claim 17 (depends on 11) The non-wet-laid layered fibrous structure according to claim 11 wherein the starch filament exhibits an average diameter of less than 25 μm to greater than 1 μm. ### Claim 18 (depends on 11) The non-wet-laid layered fibrous structure according to claim 11 wherein the polyvinyl alcohol filament comprises a polyvinyl alcohol that exhibits a weight average molecular weight of greater than about 10,000 g/mol. ### Claim 19 (depends on 11) The non-wet-laid layered fibrous structure according to claim 11 wherein the polyvinyl alcohol filament exhibits an average diameter of less than 25 μm. ### Claim 20 (depends on 11) The non-wet-laid layered fibrous structure according to claim 11 wherein the polyvinyl alcohol filament exhibits an average diameter of less than 25 μm to greater than 1 μm.