Method for producing sheets of wood with differentiated porosities

Method for producing sheets of precomposed wood with differentiated porosity, suitable for imitating sheets of natural wood, according to which the final sheets of precomposed wood are sliced from a block of wood obtained by overlapping numerous sheets of wood glued together, comprising the following steps:

• preparing natural wood sheets having a homogenous structure and a first degree of porosity;
• preparing first precomposed wood sheets having a fibrous structure and a second degree of porosity, higher than said first degree of porosity;
• forming a first block of precomposed wood by overlapping said natural wood sheets and said first precomposed wood sheets, sutiably provided with an adhesive substance;
• making the sheets adhere to one another by exerting pressure on the first block;
• slicing second precomposed wood sheets from said first block, in a direction parallel to a pre-established cutting plane;
• forming a second block of precomposed wood by overlapping said natural wood sheets and said second precomposed wood sheets, suitably provided with an adhesive substance;
• making the sheets adhere to one another by exerting pressure on the second block;
• and
• slicing third precomposed wood sheets from said second block in a direction parallel to a pre-established cutting plane, thus obtaining final sheets of wood presenting grains with desired amounts of alternate bands of at least one of different widths, appearance and porosity.