# US 2021/0279542 A1 · Metal Card Manufacturing Method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0279542 A1 - Document ID: US20210279542A1 - Status: Published application - Kind: A1 - Application number: 17/254,681 - Filed: 2018-06-20 - Published: 2021-09-09 - Earliest claimed: 2018-06-20 - Assignees: Kona I Co., Ltd.; Kona M Co., Ltd. - Applicants: Kona I Co., Ltd.; Kona M Co., Ltd. - Inventors: Ki sung NAM; Han seon KIM; Suk Ku LEE - Web page: https://patentgrep.com/patent/US20210279542A1 ## CPC - G06K 19/07722: {the record carrier being multilayered, e.g. laminated sheets (flat articles in general, see B32B37/00)} - B32B 3/08: characterised by added members at particular parts {(layer formed of separate pieces of material which are juxtaposed side-by-side B32B3/14, B32B3/18)} - B32B 3/266: {characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12} - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - B32B 15/04: comprising metal as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042)} - B32B 15/18: comprising iron or steel {(B32B15/011, B32B15/012 and B32B15/013 take precedence)} - B32B 38/0004: {Cutting, tearing or severing, e.g. bursting; Cutter details (cutting in general B26D; laminating combined with punching or perforating B32B38/04; removing all or part of the layers B32B38/10; cutting in combination with laying up and registration B32B38/185 takes precedence)} - B42D 25/23: Identity cards - B42D 25/305: Associated digital information (record carriers for use with machines and with at least a part designed to carry digital markings G06K19/00) - B42D 25/455: using heat - B42D 25/46: using pressure - G06K 19/02: characterised by the selection of materials, e.g. to avoid wear during transport through the machine - G06K 19/041: {Constructional details (G06K19/06 takes precedence)} - G06K 19/07779: {the inductive antenna being a coil} - B32B 37/12: characterised by using adhesives - B32B 2307/212: Electromagnetic interference shielding - B32B 2425/00: Cards, e.g. identity cards, credit cards - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - B42D: BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS ## Abstract The present invention relates to a metal card manufacturing method including the steps of: preparing a metal sheet having a given size capable of accommodating a plurality of individual cards; forming holes on at least one or more edges of stacked sheets formed by stacking a plurality of sheets inclusive of adhesive sheets and an inlay sheet on which antenna coils are printed, the plurality of sheets having the same size capable of accommodating the plurality of individual cards as each other; fitting the holes formed on the stacked sheets to pins located on a loading plate; placing the metal sheet on top of the stacked sheets; forming a metal card sheet through lamination among the metal sheet and the stacked sheets; and cutting the metal card sheet along individual card outlines of the plurality of individual cards. ## Claims ### Claim 1 A metal card manufacturing method comprising the steps of: preparing a metal sheet having a given size capable of accommodating a plurality of individual cards; forming holes on at least one or more edges of stacked sheets formed by stacking a plurality of sheets inclusive of adhesive sheets and an inlay sheet on which antenna coils are printed, the plurality of sheets having the same size capable of accommodating the plurality of individual cards as each other; fitting the holes formed on the stacked sheets to pins located on a loading plate; placing the metal sheet on top of the stacked sheets; forming a metal card sheet through lamination among the metal sheet and the stacked sheets; and cutting the metal card sheet along individual card outlines of the plurality of individual cards. ### Claim 2 (depends on 1) The metal card manufacturing method according to claim 1, wherein the step of cutting the metal card sheet comprises the step of injecting cooling alcohol, while cutting the individual card outlines by means of a cutting tool in a CNC process. ### Claim 3 (depends on 2) The metal card manufacturing method according to claim 2, wherein the step of forming holes on at least one or more edges of the stacked sheets comprises the step of punching the holes on positions adjacent to peaks at which the two or more edges of the stacked sheets meet. ### Claim 4 (depends on 3) The metal card manufacturing method according to claim 3, further comprising the step of exchanging the cutting tool with new one if cutting operations for the individual card outlines are performed over the number of times set in advance. ### Claim 5 (depends on 3) The metal card manufacturing method according to claim 3, wherein the step of preparing the metal sheet comprises the steps of: forming holes on at least one or more edges of the metal sheet; and forming insertion spaces on the underside of the metal sheet coming into contact with the stacked sheets through a CNC process. ### Claim 6 (depends on 5) The metal card manufacturing method according to claim 5, wherein the step of preparing the metal sheet further comprises the step of inserting machined layers made of a plastic material into the insertion spaces. ### Claim 7 (depends on 6) The metal card manufacturing method according to claim 6, wherein the step of preparing the metal sheet further comprises the step of forming machined layer exposure portions on the opposite side surface to the metal sheet side on which the machined layers are inserted. ### Claim 8 (depends on 7) The metal card manufacturing method according to claim 7, wherein the step of cutting the metal card sheet further comprises the step of cutting chip exposure areas having a smaller width than the machined layer exposure portions and located inside each individual card outline to allow the antenna coils of the inlay sheet to be exposed to the outside.