# US 2023/0264451 A1 · Composite sandwich structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0264451 A1 - Document ID: US20230264451A1 - Status: Published application - Kind: A1 - Application number: 18/086,578 - Filed: 2022-12-21 - Published: 2023-08-24 - Earliest claimed: 2022-09-01 - Inventors: Shkamb Koshi - Web page: https://patentgrep.com/patent/US20230264451A1 ## CPC - B32B 3/18: characterised by an internal layer formed of separate pieces of material {which are juxtaposed side-by-side (B32B5/02 takes precedence)} - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - 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 3/26: characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids {(foam layer B32B5/18; layer of synthetic resin characterised by fillers that create voids or cavities B32B27/205); characterised by an apertured layer} - B32B 5/02: characterised by structural features of a {fibrous or filamentary} layer {(layer formed of metallic wires B32B15/02; layer formed of natural mineral fibres B32B19/02; layer formed of wood fibres B32B21/02)} - B32B 5/18: characterised by features of a layer {of} foamed material - B32B 7/14: applied in spaced arrangements, e.g. in stripes - B32B 37/22: involving the assembly of both discrete and continuous layers - B32B 2250/03: 3 layers - B32B 2250/40: Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA - B32B 2260/02: Composition of the impregnated, bonded or embedded layer - B32B 2260/046: Synthetic resin - B32B 2262/0238: Vinyl halide, e.g. PVC, PVDC, PVF, PVDF - B32B 2262/0261: Polyamide fibres - B32B 2262/0269: Aromatic polyamide fibres - B32B 2262/0276: Polyester fibres - B32B 2262/10: Inorganic fibres - B32B 2262/101: Glass fibres - B32B 2262/106: Carbon fibres, e.g. graphite fibres - B32B 2266/0228: Aromatic vinyl resin, e.g. styrenic (co)polymers - B32B 2266/0235: Vinyl halide, e.g. PVC, PVDC, PVF, PVDF - B32B 2266/0264: Polyester - B32B 2305/022: Foam - B32B 2305/10: Fibres of continuous length - B32B 2325/00: Polymers of vinyl-aromatic compounds, e.g. polystyrene - B32B 2327/06: PVC, i.e. polyvinylchloride - B32B 2367/00: Polyesters, e.g. PET, i.e. polyethylene terephthalate - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM ## Abstract A composite sandwich structure that includes a top layer; a bottom layer; and a plurality of units sandwiched between the top layer and the bottom layer. Each of the plurality of units has a core made of hard foam and a reinforcement fiber wrap wrapped around the core and secured to the core using a double adhesive tape. The top layer, the bottom layer, and the plurality of units are laminated together using resin. ## Claims ### Claim 1 A composite sandwich structure comprising: a top layer; a bottom layer; and a plurality of units sandwiched between the top layer and the bottom layer, wherein each unit of the plurality of units comprises: a core, reinforcement fiber wrap wrapped around the core, and a double adhesive tape disposed on an inner surface of the reinforcement fiber wrap, the double adhesive tape configured to secure the reinforcement fiber wrap to the core. ### Claim 2 (depends on 1) The composite sandwich structure according to claim 1, wherein the plurality of units are arranged side-by-side, and the top layer, the bottom layer, and the plurality of units are secured by a resin. ### Claim 3 (depends on 1) The composite sandwich structure according to claim 1, wherein the reinforcement fiber wrap is made from carbon fiber, glass fiber, or Kevlar fiber. ### Claim 4 (depends on 1) The composite sandwich structure according to claim 1, wherein the core is composed of hard foam. ### Claim 5 (depends on 3) The composite sandwich structure according to claim 3, wherein the hard foam is selected from a group consisting of PVC, PET, Balsa, and XPS. ### Claim 6 (depends on 1) The composite sandwich structure according to claim 1, wherein the core is of a triangular shape or a trapezoid shape. ### Claim 7 A unit of a composite sandwich structure comprising: a core; reinforcement fiber wrap wrapped around the core, and a double adhesive tape disposed on an inner surface of the reinforcement fiber wrap, the double adhesive tape configured to secure the reinforcement fiber wrap to the core. ### Claim 8 (depends on 7) The unit according to claim 7, wherein the reinforcement fiber wrap is made from carbon fiber, glass fiber, or Kevlar fiber. ### Claim 9 (depends on 7) The unit according to claim 7, wherein the core is composed of hard foam. ### Claim 10 (depends on 9) The unit according to claim 9, wherein the hard foam is selected from a group consisting of PVC, PET, Balsa, and XPS. ### Claim 11 (depends on 7) The unit according to claim 7, wherein the core is of a triangular shape or a trapezoid shape. ### Claim 12 A method for manufacturing a structure, the method comprising the steps of: providing a composite sandwich structure comprising: a top layer, a bottom layer, and a plurality of units sandwiched between the top layer and the bottom layer, wherein each unit of the plurality of units comprises: a core, reinforcement fiber wrap wrapped around the core, and a double adhesive tape disposed on an inner surface of the reinforcement fiber wrap, the double adhesive tape configured to secure the reinforcement fiber wrap to the core. ### Claim 13 (depends on 12) The method according to claim 12, wherein the plurality of units are arranged side-by-side, and the top layer, the bottom layer, and the plurality of units are secured by a resin. ### Claim 14 (depends on 12) The method according to claim 12, wherein the reinforcement fiber wrap is made from carbon fiber, glass fiber, or Kevlar fiber. ### Claim 15 (depends on 12) The method according to claim 12, wherein the core is composed of hard foam. ### Claim 16 (depends on 15) The method according to claim 15, wherein the hard foam is selected from a group consisting of PVC, PET, Balsa, and XPS. ### Claim 17 (depends on 12) The method according to claim 12, wherein the core is of a triangular shape or a trapezoid shape.