(57) Punch for moulding ceramic tiles, comprising a rigid body (1) provided with an active
face (2) suitable for coining the fixing side of the tiles, a first sub-plane (30)
formed on said active face (2) of the rigid body (1), a second sub-plane (31) that
defines a plurality of projecting ribs (6, 60), a plurality of grooves (4) crossing
over one another that cross said second sub-plane (31) forming a lattice and that
define coplanar flat areas (5) around said projecting ribs (6, 60), said lattice of
grooves (4) making a labyrinth channel that contains an incompressible fluid (10),
an elastically flexible perforated plate (7) rested upon said flat areas (5), the
openings of which are suitable for slotting onto said projecting ribs (6, 60) with
perfect fit, and an elastically deformable membrane (8) firmly fixed to said first
sub-plane (30) and to said perforated plate (7), the outer face of said membrane (8)
being equipped with a lattice of grooves (9) suitable for forming support feet in
the tile.
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