The present invention relates to manufacture of a smart label web, the smart label web comprising smart labels one after another and/or side by side. The smart label web comprises also a circuitry pattern and an integrated circuit on a chip attached to it. In the method, an electric contact is formed between the integrated circuit on the chip and the circuitry pattern on the smart label of the smart label web in such a way that a structural part separated from a separate carrier web and containing the integrated circuit on the chip is electrically connected to the smart label by pressing mechanically. The structural part or the smart label comprises a thermoplastic film whereby the structural part is attached to the smart label substantially entirely.