# US 2017/0253997 A1 · High tenacity or high load bearing nylon fibers and yarns and fabrics thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0253997 A1 - Document ID: US20170253997A1 - Status: Published application - Kind: A1 - Application number: 15/518,274 - Filed: 2015-10-13 - Published: 2017-09-07 - Earliest claimed: 2014-10-15 - Assignees: Invista North America S.A R.L. - Applicants: Invista North America S.A R.L. - Inventors: DOUGLAS A. BLOOM; CYNTHIA DAWSON MCNAULL - Web page: https://patentgrep.com/patent/US20170253997A1 ## CPC - D01D 5/082: {of mixed yarn} - D01D 5/0023: {the material being a polymer melt} - D01D 5/12: Stretch-spinning methods ({D01D5/098 takes precedence} finishing by stretching D02J1/22) - D01D 10/02: Heat treatment (heating for finishing D02J13/00) - D01F 6/60: from polyamides (from polyamino acids or polypeptides D01F6/68) - D02G 3/04: Blended or other yarns or threads containing components made from different materials - D04H 1/4334: Polyamides - D04H 3/005: Synthetic yarns or filaments (D04H3/013 takes precedence) - D04H 3/009: Condensation or reaction polymers - D10B 2331/02: polyamides (D10B2331/08 takes precedence) - D01D: MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS - D01F: CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS - D02G: CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS - 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) - D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES ## Abstract High strength or load bearing nylon fiber with break tenacity greater than 7.5 g/den and/or a tenacity at 10% elongation of greater than 4.0 g/den as well as yarns, fabrics and articles of manufacture thereof and methods for their production are provided. ## Claims ### Claim 1 A nylon staple fiber comprising a nylon polymer, said fiber having a break tenacity greater than 7.5 g/den. ### Claim 2 (depends on 1) The nylon staple fiber of claim 1 wherein the nylon polymer is nylon 6,6. ### Claim 3 (depends on 1) The nylon staple fiber of claim 1 wherein the tenacity at 10% elongation of greater than 4.0 g/den. ### Claim 4 (depends on 1, 2, 3, 4) A yarn spun from the nylon staple fiber of any of claims 1-4. ### Claim 5 (depends on 5) The yarn of claim 5 further comprising at least one companion staple fiber. ### Claim 6 (depends on 6) The yarn of claim 6 wherein the companion staple fiber is selected from the group consisting of cellulosics, modified cellulosics, animal fibers, fire resistant polyester, fire resistant nylon, fire resistant rayon, fire resistant treated cellulose, m-aramid, p-aramid, modacrylic, novoloid, melamine, polyvinyl chloride, antistatic fiber, PBO (1,4-benzenedicarboxylic acid, polymer with 4,6-diamino-1,3-benzenediol dihydrochloride) and PBI (polybenzimidazole), and combinations thereof. ### Claim 7 (depends on 1, 2, 3, 4, 5, 6, 7) A fabric comprising nylon staple fiber of any of claims 1 through 4 or yarn of any of claims 5 through 7. ### Claim 8 (depends on 8) The fabric of claim 8 with a weight of less than 6.0 oz./yd2. ### Claim 9 (depends on 8) The fabric of claim 8 which meets or exceeds military fabrics strength and tear specifications established for fabrics that weigh less than 6.0 oz./yd2. ### Claim 10 (depends on 1) An article of manufacture at least a portion of which comprises nylon staple fiber of claim 1. ### Claim 11 A non-woven fabric composite comprising high tenacity fiber and cellulosic or recycled synthetic or natural fiber. ### Claim 12 (depends on 12) The non-woven composite of claim 12 wherein the high tenacity fiber comprises load bearing nylon fiber with break tenacity greater than 7.5 g/den and/or a tenacity at 10% elongation of greater than 4.0/den. ### Claim 13 (depends on 12, 13) The non-woven composite of claim 12 or 13 wherein the cellulosic or recycled synthetic or natural fiber comprises recycled denim. ### Claim 14 A method for producing high strength or load bearing nylon fiber, said method comprising melt-spinning nylon polymer into filaments, uniformly quenching the filaments and forming a tow from a multiplicity of these quenched filaments, subjecting the tow to drawing in the presence of steam, annealing, and converting the resulting drawn and annealed tow into staple fibers. ### Claim 15 (depends on 15) The method of claim 15 wherein annealing is performed under tension. ### Claim 16 (depends on 15, 16) The method of claim 15 or 16 wherein the nylon fiber has a break tenacity greater than 7.5 g/den. ### Claim 17 (depends on 15, 16) The method of claim 15 or 16 wherein the nylon fiber has a tenacity at 10% elongation of greater than 4.0 g/den.