PROCESS FOR FABRICATING COATED CARDBOARD FOR THE PACKAGING OF LIQUIDS

摘要

The process makes use of a sizing dispersion which is comprised of an aqueous dispersion of resin material, a synthetic sizing agent and an aluminium compound selected in the group including aluminium sulphate and aluminium polymers having the formulas (1): [Al(OH)x(A)(3-x)]n, or (2): [Al(OH)x(H3PO4)y(A)(3-x)]n, wherein A = Cl<->, NO3<->, HCOO<->, CH3COO<->; or (3): [Al(OH)x(H3PO4)y(SO4)(3-x)/2]n where "x" is comprised between 0.03 and 2.7, and "y" ranges from 0.01 and 0.8, and n >/= 2; and mixtures thereof.