US Patent 7918455 Chip with insert including an electronic microchip

The chip, in the general shape of a disk, of the type with a body obtained by multiple injection molding of plastics material, includes a core 14 obtained by a first plastics material injection molding operation having a central portion 24 defining the central portion of the body of said chip and a peripheral portion 31 defining, by means of radial projections 18, at least a portion of the edge of the body of the chip. The core 14 incorporates an insert 26 including a contactless electronic microchip identification device 27 that during the first injection molding operation is buried in the central portion 24 and retained at its periphery by projections or fingers attached to the injection-molding mold and defining apertures 36 in the core. The chip body includes a covering layer around the peripheral portion 31 of the core 14 obtained by a second plastics material injection molding operation to produce, with the core, the whole of the edge and the peripheral annular portion of the body of the chip. A decorated label is fixed to each face of the chip.