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Method of identifying a container and/or a finished article obtained from the said container, in particular for medical use

  • US 20090159654A1
  • Filed: 04/26/2006
  • Published: 06/25/2009
  • Est. Priority Date: 04/28/2005
  • Status: Active Grant
First Claim
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1. Method of marking a container (1) for identification purpose for medical or diagnostic use, intended to hold a product (10) of interest, the said container (1) being obtained by a process characterized in that it comprises at least the following steps during which:

  • (B) a two-dimensional or three-dimensional marking zone (4), the temperature of which is maintained at a first temperature, is provided in or on the substrate of a blank (2) intended to constitute the said container (1) and, in the said marking zone (4), an identification code (5) is reproduced by illumination (6) of the said marking zone (4) with at least one beam (7) of coherent monochromatic localized electromagnetic radiation to which the substrate is at least partially transparent, the said beam (7) being operated and controlled in order to remove or modify the constituent substrate of the wall (3) and to leave the identification code (5), in positive or negative form, in the said wall so that the said code is readable; and

    (C) at least the said marking zone (4) is annealed by heating it to a second temperature strictly above the said first temperature so as at least to reduce the differences in internal tension in the substrate between the said marking zone (4) and the rest of the said wall (3).

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