# US 2019/0169770 A1 · Twisted yarn, opened yarn, carbon fiber-covered twisted yarn, and method for manufacturing these > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0169770 A1 - Document ID: US20190169770A1 - Status: Published application - Kind: A1 - Application number: 16/067,678 - Filed: 2017-05-31 - Published: 2019-06-06 - Earliest claimed: 2016-08-25 - Assignees: Japan Matex Co., Ltd. - Applicants: Japan Matex Co., Ltd - Inventors: Katsuro Tsukamoto; Hiroaki Tsukamoto - Web page: https://patentgrep.com/patent/US20190169770A1 ## CPC - D02G 3/06: Threads formed from strip material other than paper - D02G 3/16: Yarns or threads made from mineral substances - D02G 3/36: Cored or coated yarns or threads ({D02G3/34, D02G3/40 take precedence}; elastic yarns or threads D02G3/32) - D02G 3/38: Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, {e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn; (D02G3/32 takes precedence)}; (covering endless core threads with fibres by using open-end spinning techniques D01H4/00) - D06M 11/45: Oxides or hydroxides of elements of Groups 3 or 13 of the Periodic Table; Aluminates - D06M 11/50: with hydrogen peroxide or peroxides of metals; with persulfuric, permanganic, pernitric, percarbonic acids or their salts - D06M 13/10: with compounds containing oxygen - D02G 3/402: {the adhesive being one component of the yarn, i.e. thermoplastic yarn} - D10B 2101/12: Carbon; Pitch - D10B 2505/02: Reinforcing materials; Prepregs - D02G: CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS - D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS - D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES ## Abstract The present invention relates to twisted yarn (P) obtained by twisting a plurality of carbon fiber resins which are slit from a carbon fiber resin tape (F2), open yarn obtained by S-twisting and Z-twisting covering yarn (C) around the periphery of the twisted yarn (P), carbon fiber covered twisted yarn obtained by winding the twisted yarn around the periphery of a core material, and methods for manufacturing thereof. ## Claims ### Claim 1 Twisted yarn obtained by twisting carbon fiber resins which are slit from a carbon fiber resin tape. ### Claim 2 (depends on 1) The twisted yarn according to claim 1, wherein a low-melting thermoplastic resin is covered over the outer peripheral surface of the twisted yarn. ### Claim 3 (depends on 1) Open yarn obtained by S-twisting and Z-twisting covering yarn around the periphery of the twisted yarn according to claim 1. ### Claim 4 (depends on 3) The open yarn according to claim 3, wherein a low-melting thermoplastic resin is covered over the outer peripheral surface of a layer obtained by S-twisting and Z-twisting the covering yarn. ### Claim 5 (depends on 3) The open yarn according to claim 3, wherein the covering yarn is selected from one or more of nylon fiber, polytetrafluoroethylene, aramid fiber, stainless steel material, and Inconel (registered trademark) wire. ### Claim 6 (depends on 3) The open yarn according to claim 3, wherein the diameter of the open yarn is 0.15-2.5 mm. ### Claim 7 (depends on 1) Carbon fiber covered twisted yarn obtained by winding the twisted yarn according to claim 1 around the periphery of a core material. ### Claim 8 (depends on 7) The carbon fiber covered twisted yarn according to claim 7, wherein a low-melting thermoplastic resin is covered over the outer peripheral surface of a layer obtained by winding the carbon fiber resins. ### Claim 9 (depends on 7) The carbon fiber covered twisted yarn according to claim 7, wherein the core material includes one or more of an organic or inorganic yarn material, stainless steel material, and Inconel (registered trademark) wire selected. ### Claim 10 (depends on 1) A method for manufacturing twisted yarn comprising the carbon fiber resin tape described in claim 1, the method comprising; a 1st step of immersing a carbon fiber bundle having a plurality of carbon fibers into reduced water having a negative oxidation-reduction potential to spread the carbon fiber bundle flat; a 2nd step of immersing the carbon fiber bundle into either adhesive solution containing adhesive, alumina sol, and potassium persulfate or adhesive solution containing adhesive, alumina sol, and benzoyl after the 1st step; a 3rd step of drying the carbon fiber bundle to manufacture a carbon fiber resin tape after the 2nd step; and a 4th step of slitting the carbon fiber resin tape and twisting a plurality of the slit carbon fiber resins at 15-80 times/m to form twisted yarn. ### Claim 11 (depends on 10) The method for manufacturing twisted yarn according to claim 10, further comprising a step of covering a low-melting thermoplastic resin over the outer peripheral surface of the twisted yarn after the 4th step. ### Claim 12 (depends on 11) The method for manufacturing twisted yarn according to claim 11, wherein the step of covering is performed by extruding the low-melting thermoplastic resin in a molten state together with the twisted yarn from a nozzle while contacting the resin with the outer peripheral surface. ### Claim 13 (depends on 3) A method for manufacturing open yarn described in claim 3, the method comprising; a 1st step of immersing a carbon fiber bundle having a plurality of carbon fibers into reduced water having a negative oxidation-reduction potential to spread the carbon fiber bundle flat; a 2nd step of immersing the carbon fiber bundle into either adhesive solution containing adhesive, alumina sol, and potassium persulfate or adhesive solution containing adhesive, alumina sol, and benzoyl after the 1st step; a 3rd step of drying the carbon fiber bundle to manufacture a carbon fiber resin tape after the 2nd step; a 4th step of slitting the carbon fiber resin tape and twisting a plurality of the slit carbon fiber resins at 15-80 times/m to form twisted yarn; and a 5th step of S-twisting one covering yarn and Z-twisting the other covering yarn around the periphery of the twisted yarn comprising a carbon fiber resin tape. ### Claim 14 (depends on 13) The method for manufacturing open yarn according to claim 13, further comprising a step of covering a low-melting thermoplastic resin over the outer peripheral surface of a layer obtained by S-twisting and Z-twisting the covering yarn, after the 5th step. ### Claim 15 (depends on 14) The method for manufacturing open yarn according to claim 14, wherein the step of covering is performed by extruding the low-melting thermoplastic resin in a molten state together with the open yarn from a nozzle while contacting the resin with the outer peripheral surface. ### Claim 16 (depends on 13) The method for manufacturing open yarn according to claim 13, wherein the 5th step further comprises winding covering yarn around the periphery of the twisted yarn at 4-6 mm-wide equal interval. ### Claim 17 (depends on 7) A method for manufacturing carbon fiber covered twisted yarn described in claim 7, the method comprising; a 1st step of immersing a carbon fiber bundle having a plurality of carbon fibers into reduced water having a negative oxidation-reduction potential to spread the carbon fiber bundle flat; a 2nd step of immersing the carbon fiber bundle into adhesive solution containing adhesive, alumina sol, and potassium persulfate after the 1st step; a 3rd step of drying the carbon fiber bundle to manufacture a carbon fiber resin tape after the 2nd step; a 4th step of slitting the carbon fiber resin tape and twisting a plurality of the slit carbon fiber resins at 15-80 times/m to form twisted yarn; and a 5th step of S-twisting one twisted yarn comprising a carbon fiber resin tape and Z-twisting the other twisted yarn comprising a carbon fiber resin tape around the periphery of a core material. ### Claim 18 (depends on 17) The method for manufacturing carbon fiber covered twisted yarn according to claim 17, further comprising a step of covering a low-melting thermoplastic resin over the outer peripheral surface of a layer obtained by S-twisting and Z-twisting the twisted yarn, after the 5th step. ### Claim 19 (depends on 18) The method for manufacturing carbon fiber covered twisted yarn according to claim 18, wherein the step of covering is performed by extruding the low-melting thermoplastic resin in a molten state together with the carbon fiber covered twisted yarn from a nozzle while contacting the resin with the outer peripheral surface. ### Claim 20 (depends on 17) The method for manufacturing carbon fiber covered twisted yarn according to any one of claim 17, wherein the 5th step further comprises winding covering yarn around the periphery of the core material at 4-6 mm-wide equal interval. ### Claim 21 (depends on 4) The open yarn according to claim 4, wherein the covering yarn is selected from one or more of nylon fiber, polytetrafluoroethylene, aramid fiber, stainless steel material, and Inconel (registered trademark) wire. ### Claim 22 (depends on 4) The open yarn according to claim 4, wherein the diameter of the open yarn is 0.15-2.5 mm. ### Claim 23 (depends on 5) The open yarn according to claim 5, wherein the diameter of the open yarn is 0.15-2.5 mm. ### Claim 24 (depends on 21) The open yarn according to claim 21, wherein the diameter of the open yarn is 0.15-2.5 mm. ### Claim 25 (depends on 8) The carbon fiber covered twisted yarn according to claim 8, wherein the core material includes one or more of an organic or inorganic yarn material, stainless steel material, and Inconel (registered trademark) wire selected. ### Claim 26 (depends on 14) The method for manufacturing open yarn according to claim 14, wherein the 5th step further comprises winding covering yarn around the periphery of the twisted yarn at 4-6 mm-wide equal interval. ### Claim 27 (depends on 15) The method for manufacturing open yarn according to claim 15, wherein the 5th step further comprises winding covering yarn around the periphery of the twisted yarn at 4-6 mm-wide equal interval. ### Claim 28 (depends on 17) The method for manufacturing carbon fiber covered twisted yarn according to any one of claim 17, wherein the 5th step further comprises winding covering yarn around the periphery of the core material at 4-6 mm-wide equal interval. ### Claim 29 (depends on 18) The method for manufacturing carbon fiber covered twisted yarn according to any one of claim 18, wherein the 5th step further comprises winding covering yarn around the periphery of the core material at 4-6 mm-wide equal interval.