METHOD OF MANUFACTURING FLUIDS-PACKAGING COATED CARDBOARD Russian patent published in 2002 - IPC

FIELD: packaging materials. SUBSTANCE: invention, in particular, relates to sizing composition containing aqueous dispersion of colophony, synthetic sizing agent, and aluminum compound selected from group including aluminum sulfate, aluminum polymers depicted by general formulas [Al(OH)_x(A)_(3-x)]_n, [Al(OH)_x(H₃PO₄)_y(A)_(3-x)]_n wherein A denotes chloride, nitrate, formate, and acetate anions, and [Al(OH)_x(H₃PO₄)_y(SO₄)_(3-x)/2]_n wherein x varies 0.03-2.7, y is 0.01-0.8, and n is at least 2, and mixtures of these compounds. EFFECT: imparted high resistance against introduction of hot hydrogen peroxide and lactic acid to the edges of cardboard package. 9 cl, 1 tbl, 4 ex