US 12,079,678 B2
Method for producing a card body, card body for a chip card and chip card
Michael Baldischweiler, Munich (DE)
Assigned to GIESECKE+DEVRIENT EPAYMENTS GMBH, Munich (DE)
Appl. No. 18/267,508
Filed by GIESECKE+DEVRIENT EPAYMENTS GMBH, Munich (DE)
PCT Filed Dec. 15, 2021, PCT No. PCT/EP2021/025501
§ 371(c)(1), (2) Date Jun. 15, 2023,
PCT Pub. No. WO2022/128159, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 10 2020 007 784.6 (DE), filed on Dec. 18, 2020.
Prior Publication US 2024/0037363 A1, Feb. 1, 2024
Int. Cl. G06K 19/063 (2006.01); G06K 19/04 (2006.01); G06K 19/077 (2006.01)
CPC G06K 19/063 (2013.01) [G06K 19/044 (2013.01); G06K 19/07722 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for manufacturing a card body for a chip card with the steps of:
supplying a metallic base body with two opposite main faces and a circumferential peripheral face connecting the two main faces,
wherein in the base body a module opening for receiving a chip module has already been produced or will still be produced in a module opening zone, and
producing a slot on the peripheral face between the two main faces,
wherein the slot is formed from the peripheral face up to the module opening or up to the module opening zone, and
wherein an entry angle of the slot into at least one of the two main faces is not equal to ninety degrees with respect to the main face,
wherein at least a portion of the slot is formed in an arched shape from one main side to the other main side so that a first wall of the slot has a concave portion and an opposite second wall of the slot has a convex portion,
wherein the convex portion engages in the concave portion.