procedure and apparatus for the modification of overfladetilstanden of materials, in particular materials of paper and / or paptype

摘要

Process for modifying the surface state of a material or support, especially of the paper and/or cardboard type, particularly for the printing of said material or support, according to which there is applied simultaneously to the surface of said material a plurality of inks and/or lacquers deposited or treated so as to form on the material or support zones capable of retaining filler particles adhering solely to said zones, and in which the removal of the excess filler particles is then carried out by suction and/or blowing, this operation being followed by drying at a suitable temperature and for a suitable time in order to fix all the types of inks or lacquers. …??The fillers are thermoplastic or thermosetting powders, the fusion of which is carried out in an air atmosphere sufficiently laden with moisture to oppose an appreciable drop in humidity of the support under the effect of the means for the fusion of the powders. …IMAGE…