Flat card having internal relief and incorporating at least one electronic element

A card comprising:

• at least one electronic element,
• a first layer formed from a solid material and having a first inner face, and
• a second layer formed by a solidified binder in which said electronic element is located and which adheres to the first inner face of said first layer,
• wherein the totality of said first inner face exhibits a relief so that the interior of a first zone on which the electronic element is located is provided with said relief, said relief defining sunken valleys traversing entirely said first zone.

A card comprising:

• a first layer formed from a solid material and having a first inner face exhibiting a relief on an interior of a first zone, said relief defining sunken valleys traversing said first zone;
• a second layer formed by a solidifiable binder material which adheres to said first inner face;
• and,
• an electronic element disposed within said second layer so as to overlay said sunken valleys,
• said electronic element having a first surface facing said first layer, said first surface having a configuration that does not match the relief exhibited by said first inner face so that spaces exist between said first surface and said first inner face, said sunken valleys providing paths through which said solidifiable binder material fills said spaces.