# US 2023/0057576 A1 · Inorganic substance powder-blended spunbond nonwoven fabric > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0057576 A1 - Document ID: US20230057576A1 - Status: Published application - Kind: A1 - Application number: 17/792,059 - Filed: 2020-10-27 - Published: 2023-02-23 - Earliest claimed: 2020-01-14 - Assignees: Tbm Co., Ltd. - Applicants: Tbm Co., Ltd. - Inventors: Hiroshi NAKAMURA; Satoshi MATSUDA - Web page: https://patentgrep.com/patent/US20230057576A1 ## CPC - D01F 6/46: of polyolefins - D01F 1/10: Other agents for modifying properties - D04H 3/007: Addition polymers - D04H 3/14: with bonds between thermoplastic yarns or filaments produced by welding - D01D 5/0985: {by means of a flowing gas (e.g. melt-blowing)} - D10B 2321/021: polyethylene - D10B 2321/022: polypropylene - D10B 2401/041: thermoplastic; thermosetting - D01F: CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS - 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) - D01D: MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS - D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES ## Abstract Provided is a spunbond nonwoven fabric that is easy to produce due to excellent spinnability and has uniform and sufficient quality including mechanical properties while the spunbond nonwoven fabric is highly filled with an inorganic substance powder. An inorganic substance powder-blended spunbond nonwoven fabric is composed of a fiber, the fiber including: a thermoplastic resin and an inorganic substance powder in a mass ratio of 50:50 to 10:90, and an ethylene-based polymer wax having a weight average molecular weight of 400 or more and 5,000 or less in an amount of 0.1 part by mass or more and 3.0 parts by mass or less relative to 100 parts by mass of a total amount of the thermoplastic resin and the inorganic substance powder. ## Claims ### Claim 1 An inorganic substance powder-blended spunbond nonwoven fabric composed of a fiber, the fiber comprising: a thermoplastic resin and an inorganic substance powder in a mass ratio of 50:50 to 10:90, and an ethylene-based polymer wax having a weight average molecular weight of 400 or more and 5,000 or less in an amount of 0.1 part by mass or more and 3.0 parts by mass or less relative to 100 parts by mass of a total amount of the thermoplastic resin and the inorganic substance powder. ### Claim 2 (depends on 1) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 1, wherein the inorganic substance powder is heavy calcium carbonate particles having an average particle diameter determined by an air permeation method in accordance with JIS M-8511 of 1.0 μm or more and 5.0 μm or less. ### Claim 3 (depends on 2) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 2, wherein a BET specific surface area of the heavy calcium carbonate particles is 0.1 m2/g or more and 10.0 m2/g or less. ### Claim 4 (depends on 2) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 2, wherein a roundness of the heavy calcium carbonate particles is 0.50 or more and 0.95 or less. ### Claim 5 (depends on 1) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 1, wherein the thermoplastic resin is a thermoplastic resin comprising a polypropylene-based resin. ### Claim 6 (depends on 5) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 5, wherein the polypropylene-based resin is a homopolymer of polypropylene having a melt flow rate (MFR) of 50 g/10 min or more and 70 g/10 rain or less. ### Claim 7 (depends on 1) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 1, wherein a density of the ethylene-based polymer wax is 0.890 g/cm3 or more and 0.990 g/cm3 or less. ### Claim 8 (depends on 3) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 3, wherein a roundness of the heavy calcium carbonate particles is 0.50 or more and 0.95 or less. ### Claim 9 (depends on 2) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 2, wherein the thermoplastic resin is a thermoplastic resin comprising a polypropylene-based resin. ### Claim 10 (depends on 3) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 3, wherein the thermoplastic resin is a thermoplastic resin comprising a polypropylene-based resin. ### Claim 11 (depends on 4) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 4, wherein the thermoplastic resin is a thermoplastic resin comprising a polypropylene-based resin. ### Claim 12 (depends on 8) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 8, wherein the thermoplastic resin is a thermoplastic resin comprising a polypropylene-based resin. ### Claim 13 (depends on 9) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 9, wherein the polypropylene-based resin is a homopolymer of polypropylene having a melt flow rate (MFR) of 50 g/10 min or more and 70 g/10 min or less. ### Claim 14 (depends on 10) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 10, wherein the polypropylene-based resin is a homopolymer of polypropylene having a melt flow rate (MFR) of 50 g/10 min or more and 70 g/10 min or less. ### Claim 15 (depends on 11) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 11, wherein the polypropylene-based resin is a homopolymer of polypropylene having a melt flow rate (MFR) of 50 g/10 min or more and 70 g/10 min or less. ### Claim 16 (depends on 2) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 2, wherein a density of the ethylene-based polymer wax is 0.890 g/cm3 or more and 0.990 g/cm3 or less. ### Claim 17 (depends on 3) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 3, wherein a density of the ethylene-based polymer wax is 0.890 g/cm3 or more and 0.990 g/cm3 or less. ### Claim 18 (depends on 4) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 4, wherein a density of the ethylene-based polymer wax is 0.890 g/cm3 or more and 0.990 g/cm3 or less. ### Claim 19 (depends on 5) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 5, wherein a density of the ethylene-based polymer wax is 0.890 g/cm3 or more and 0.990 g/cm3 or less. ### Claim 20 (depends on 6) The inorganic substance powder-blended spunbond nonwoven fabric according to claim 6, wherein a density of the ethylene-based polymer wax is 0.890 g/cm3 or more and 0.990 g/cm3 or less.