Process for thermo-adhesive bonding of semi-finished products

Process for thermo-adhesive bonding of semi-finished products, comprising:

• preparing at least one inner sock;
• preparing at least one outer sock;
• preparing at least one membrane with a thermo-adhesive placed on an inner surface and/or on an outer surface of said membrane;
• fitting the inner sock on a rigid reference shape;
• fitting the membrane over the rigid reference shape and over the inner sock;
• fitting the outer sock over the rigid reference shape and over the membrane;
• heating the outer sock, the membrane and the inner sock arranged on the rigid reference shape until at least partial melting of the thermo-adhesive is determined;
• and
• cooling the outer sock, the membrane and the inner sock arranged on the rigid reference shape until cross-linking of the thermo-adhesive and a stable union of the membrane with the outer sock and/or the inner sock is determined;
• wherein, during cooling, it is also provided to exert a substantially uniform pressure on the outer sock, on the membrane and on the inner sock arranged on the rigid reference shape to compact said outer sock, membrane and inner sock.