Method of producing a contactless chip card or a contact/contactless hybrid chip card with improved flatness
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Accused Products
Abstract
Method of manufacturing a chip card having an antenna support, two card bodies and an electronic module or a chip linked to the antenna. This method has a first lamination step which includes fusing two thermoplastic sheets (32, 34 or 62, 64) on each side of antenna support (10 or 40) at a temperature sufficient for the thermoplastic sheet material to soften and to flow wholly so as to eliminate any differences in thickness from the support, and a second lamination step carried out after a period of time necessary for the thermoplastic sheets (32, 34 or 62, 64) to be solidified, the second step including fusing by hot pressing two plastic layers (36, 38 or 66, 68) making up the card bodies onto the plasticised and even faces of uniformly thick antenna support (30 or 60) plasticised by the thermoplastic sheets.
35 Citations
26 Claims
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1-13. -13. (Canceled)
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14. A method of manufacturing a contactless chip card or a contact/contactless hybrid chip card having an antenna support, two card bodies on either side of said antenna support and an electronic module or a chip linked to the antenna comprising:
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a first lamination step comprising fusing two homogeneous sheets of thermoplastic on each side of said antenna support by pressing at a temperature sufficient for the material of which the sheets are made to soften and to flow wholly so as to eliminate any differences in thickness from the antenna support and to form a plasticised antenna support having even faces, and a second lamination step carried out after a period of time corresponding to the period of time necessary for said sheets of thermoplastic to be solidified, said second step comprising fusing by hot pressing two plastic layers making up the card bodies onto the plasticised and even faces of uniformly thick antenna support plasticised by said sheets of thermoplastic. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification