Patents Assigned to Erplip S.A.
  • Process for the manufacture of coated liquid packaging board
    Patent number: 6669816
    Abstract: The process contemplates the use of a sizing dispersion that comprises an aqueous dispersion of rosin material, a synthetic sizing agent and a aluminum compound selected from the group formed by aluminum sulfate and aluminum polymers of formulas [Al(OH)x(A)(3−x)]n  (1) or [Al(OH)x(H3PO4)y(A)(3−x)]n  (2) where A=Cl−, NO3−, HCOO−, CH3COO−; or [Al(OH)x(H3PO4)y(SO4)(3−x/2)]n  (3) where “x” ranges from 0.03 to 2.7, and “y” ranges from 0.01 to 0.8 and n≧2; and by mixtures thereof.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: December 30, 2003
    Assignees: Erplip S.A., Kemira Iberica S.A.
    Inventors: Juan José Costas Poch, Josep Lluis Bisbal Tudela