# US 2013/0153828 A1 · Sheet material and its production method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0153828 A1 - Document ID: US20130153828A1 - Status: Published application - Kind: A1 - Application number: 13/820,309 - Filed: 2011-08-29 - Published: 2013-06-20 - Earliest claimed: 2010-09-03 - Assignees: The Nisshin OilliO Group, Ltd.; Asahi Organic Chemicals Industry Co., Ltd. - Inventors: Toshihiko Kaneiwa; Takehiko Takahashi; Takeshi Takahashi; Hiroyuki Gotou; Go Shinohara; Noriyasu Kuno; Hiroshi Iizuka - Web page: https://patentgrep.com/patent/US20130153828A1 ## CPC - D21H 17/02: Material of vegetable origin (proteins D21H17/22; lignins D21H17/23; polysaccharides D21H17/24; rosin D21H17/62) - H05K 9/009: {comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked} - 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 - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract PROBLEM To effectively utilize plant residue such as soybean hulls, rapeseed meal, rice bran, rice husk, and cacao husk. SOLUTION When forming sheet material from a mixture of burned plant material and fibrous material by a wet-process sheet production method, the burned plant material is one of a burned material of rice husk, a burned material of rice bran, a burned material of soybean hulls, a burned material of inner skin of peanut, a burned material of conduit side wall portion of seed plant or a burned material of cacao husk, and the fibrous material is one of a organic fiber derived from thermoplastic resin including polyolefin consisting of polyethylene and polypropylene, polyester, polyamide, vinyl chloride, polyacrylonitrile, polyvinyl chloride and aramid, a fiber derived from thermosetting resin including kynol, a natural fiber including cotton, wool, etc., a semisynthetic fiber, an inorganic fiber including glass fiber and carbon fiber, a metal fiber including iron, copper, stainless steel and steel, a metalized fiber with electroless plating applied on short fibers including synthetic resin and inorganic material, furthermore, a combination of these short fibers. ## Claims ### Claim 1 A sheet material formed by a wet-process sheet production method from a mixture of burned plant material and fibrous material. ### Claim 2 (depends on 1) The sheet material as claimed in claim 1, wherein the burned plant material is a burned material of rice husk, a burned material of rice bran, a burned material of soybean hulls, a burned material of rapeseed meal, a burned material of inner skin of peanut, a burned material of conduit side wall portion of seed plant, or a burned material of cacao husk. ### Claim 3 (depends on 1) The sheet material as claimed in claim 1, wherein the burned plant material contains a spiral portion. ### Claim 4 (depends on 1) The sheet material as claimed in claim 1, wherein the fibrous material is a thermoplastic resin fiber, a thermosetting resin fiber, a natural fiber, a semisynthetic fiber, a glass fiber, an inorganic fiber, a metal fiber, or one of these combinations. ### Claim 5 (depends on 1) The sheet material as claimed in claim 1, in addition, wherein a metal filler is mixed. ### Claim 6 (depends on 1) The sheet material as claimed in claim 1, wherein a mixing ratio of the fibrous material and the metal filler is 1:3 to 3:1. ### Claim 7 (depends on 1) The sheet material as claimed in claim 1, wherein, after the wet-process sheet production, the sheet material is pressurized under a condition that a bulk density becomes 0.5 [g/cm3] or above. ### Claim 8 (depends on 1) The sheet material as claimed in claim 1, wherein, in addition, a matrix consisting of a thermosetting resin, or, a thermoplastic resin is mixed. ### Claim 9 (depends on 1) A burned plant material included in the sheet material as claimed in claim 1. ### Claim 10 A method producing for a sheet material, wherein the method is to form a sheet by wet-process sheet production using a sheet making slurry obtained by mixing a fibrous material and a burned plant material in water. ### Claim 11 An electromagnetic shielding member, wherein the electromagnetic shielding member consists of a sheet material using a burned plant material. ### Claim 12 An electromagnetic shielding member consisting of a sheet material formed by a wet-process sheet production method from a mixture of burned plant material, fibrous material and metal filler. ### Claim 13 An electromagnetic shielding member laminated a sheet material using a burned plant material and a sheet material formed by a wet-process sheet production method from a mixture of burned plant material, fibrous material and metal filler.