# US 2018/0022057 A1 · Layered board > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0022057 A1 - Document ID: US20180022057A1 - Status: Published application - Kind: A1 - Application number: 15/655,543 - Filed: 2017-07-20 - Published: 2018-01-25 - Earliest claimed: 2016-07-20 - Assignees: Meiwa Industry Co., Ltd. - Applicants: Meiwa Industry Co. Ltd. - Inventors: Shinya NOTO - Web page: https://patentgrep.com/patent/US20180022057A1 ## CPC - B32B 3/12: characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure - B32B 3/04: characterised by {at least one} layer folded at the edge, e.g. over another layer {; characterised by at least one layer enveloping or enclosing a material} - B32B 3/06: for securing layers together; for attaching the product to another member, e.g. to a support {, or to another product, e.g. groove/tongue, interlocking} - B32B 3/20: of hollow pieces, e.g. tubes; of pieces with channels or cavities - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - B32B 27/08: of synthetic resin - B32B 27/10: of paper or cardboard - B32B 27/18: characterised by the use of special additives - B32B 27/20: using fillers, pigments, thixotroping agents - B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} - B32B 29/00: Layered products comprising {a layer of} paper or cardboard - B60R 5/044: {luggage covering means, e.g. parcel shelves} - B60R 13/013: {comprising removable or hinged parts, e.g. for accessing storage compartments} - B60R 13/02: {Internal} Trim mouldings {; Internal} Ledges; Wall liners {for passenger compartments}; Roof liners (B60R13/01 takes precedence {; padded linings for the vehicle interior B60R21/04; arrangements or adaptations of floor mats or carpets in vehicles B60N3/04; internal lining for trains B61D17/18}) - B32B 37/12: characterised by using adhesives - B32B 37/146: {whereby one or more of the layers is a honeycomb structure} - B32B 2250/05: 5 or more layers - B32B 2262/101: Glass fibres - B32B 2262/106: Carbon fibres, e.g. graphite fibres - B32B 2264/10: Inorganic particles - B32B 2264/102: Oxide or hydroxide - B32B 2264/104: Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles - B32B 2307/306: Resistant to heat - B32B 2307/544: Torsion strength; Torsion stiffness - B32B 2307/546: Flexural strength; Flexion stiffness - B32B 2605/003: Interior finishings - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR ## Abstract A trunk board includes a first panel and a second panel each made of a thermoplastic material, and a reinforcing body placed between the first panel and the second panel. The reinforcing body is a cylinder assembly including plural rows of cylinders made of paper arranged in parallel. Since the reinforcing body is the cylinder assembly made of paper, the trunk board has high rigidity resistant to high temperature conditions. ## Claims ### Claim 1 A layered board comprising: a first panel and a second panel each made of a thermoplastic material; and a reinforcing body placed between the first panel and the second panel, the reinforcing body being a cylinder assembly including plural rows of cylinders made of paper arranged in parallel. ### Claim 2 (depends on 1) The layered board according to claim 1, wherein: a first sheet is placed between the first panel and the cylinder assembly, and a second sheet is placed between the second panel and the cylinder assembly; an axial direction of the cylinders composing the cylinder assembly conforms to a direction intersecting a plane direction of the first sheet and the second sheet; one side of the first sheet is attached to the cylinder assembly and another side is welded to the first panel via a thermoplastic material; and one side of the second sheet is attached to the cylinder assembly and another side is welded to the second panel via a thermoplastic material. ### Claim 3 (depends on 1) The layered board according to claim 1, wherein the reinforcing body is a honeycomb structure. ### Claim 4 (depends on 1) The layered board according to claim 1, wherein the material included in the first panel and the second panel, the material bonding the first sheet and the first panel, and the material bonding the second sheet and the second panel are a same type of thermoplastic resin. ### Claim 5 (depends on 1) The layered board according to claim 1, wherein: the first panel is provided at an end with a curved surface curved toward an end of the second panel; the second panel is provided at the end with a curved surface curved toward the end of the first panel; and an edge of the curved surface of the first panel and an edge of the curved surface of the second panel are directly welded together to form a welded portion. ### Claim 6 (depends on 1) The layered board according to claim 1, wherein: the first panel is provided at an end with a curved surface curved toward an end of the second panel; the second panel extends straight to have a flat end; and an edge of the curved surface of the first panel and the flat end of the second panel are directly welded together to form a welded portion. ### Claim 7 (depends on 1) The layered board according to claim 1, wherein: a plurality of reinforcing bodies are held between the first panel and the second panel at a predetermined interval, each of the reinforcing bodies being said reinforcing body; and the first panel and the second panel are directly welded together between one reinforcing body and another reinforcing body adjacent to the one reinforcing body to provide a welded portion serving as a hinge.