Process for the manufacture of small blocks made from wood fibers

A process for manufacture of small blocks made from wood fibers, the process comprising at least the following phases of:

• supply of at least one mixture of material based on the wood fibers, in a form of flakes and having a substantially elongated conformation, and resin;
• supply of at least one extrusion channel provided with at least one outlet port substantially shaped like a parallelogram and having a pair of first sides with a first length and a pair of second sides with a second length;
• supply of at least one extruder body shaped substantially complementary to said at least one extrusion channel, wherein said at least one extruder body is movable linearly by shifting within said at least one extrusion channel along a direction of compaction, defines at least one thrust plane transverse to said direction of compaction and is adapted to contact the at least one mixture of material;
• compaction of said at least one mixture of material within said at least one extrusion channel though movement of said at least one extruder body along said direction of compaction so as to obtain a compacted body, the wood fibers of said at least one mixture of material arranging in a substantially coplanar manner to said at least one thrust plane and on lying planes which are transverse to said direction of compaction;
• extrusion of said compacted body through said at least one outlet port said compacted body having at least one free end exiting from said at least one outlet port;
• and
• cutting of said compacted body along a cutting plane which is transverse to said direction of compaction at a predefined distance from said at least one free end along said direction of compaction so as to obtain a small block made from the wood fibers, sides of which have a first dimension corresponding to said first length, a second dimension corresponding to said second length and a third dimension corresponding to said predefined distance;
• wherein
• said predefined distance is greater than or equal to the lesser of either said first length or said second length so that said small block has four main faces arranged orthogonally to said cutting plane, having a main side defined by said predefined distance and at which said lying planes are arranged transverse to said main side, and at least two cutting faces opposite each other, obtained by means of said cut and bounded by a side having a smaller dimension than the others.