×

Process for obtaining a substrate provided with a coating

  • US 10,301,712 B2
  • Filed: 05/21/2014
  • Issued: 05/28/2019
  • Est. Priority Date: 05/24/2013
  • Status: Active Grant
First Claim
Patent Images

1. A process for obtaining a substrate provided, on at least part of at least one of its faces, with a coating comprising a pattern with spatial modulation of at least one property of the coating, the process comprising performing a heat treatment, using a laser radiation, of a continuous coating deposited on the substrate, in which the coating before heat treatment at least partially absorbs the laser radiation, the heat treatment being such that the substrate is irradiated with the laser radiation focused on the coating in the form of at least one laser line, keeping the coating continuous and without melting the coating, and during said heat treatment a relative displacement of the substrate and of the laser line focused on the coating in a direction transverse to a longitudinal direction of the laser line is performed while temporally modulating during the relative displacement a power of the laser line as a function of a speed of the relative displacement and of dimensions of the pattern in the relative displacement direction,wherein the power of the laser line is temporally modulated by temporally modulating an input electrical signal of each laser source forming the laser line, andwherein the laser line is formed using several independent laser sources, the temporal modulation of the input electrical signal being different from one laser source to another forming the laser line during the relative displacement.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×