| abstract |
a) une charge minérale, b) un agent de collage, et c) un système rétenteur constitué de:n c)1) amidon cationique, c)2) polychlorure d'aluminium, et c)3) silice à caractère anionique The paper manufacturing process is characterized in that the fiber composition entering the headbox is added: a) a mineral filler, b) a bonding agent, and c) a retention system consisting of: c) 1) cationic starch, c) 2) poly aluminum chloride, and c) 3) anionic silica n n n The products c) 1), c) 2) and c) 3) have by weight, relative to the weight of the composition entering the headbox, the following respective weight percentages: 0.15 to 1.7%, 0, 05 to 0.25% expressed as a percentage of Al₂O₃, and 0.01 to 0.3% expressed as a percentage of SiO₂. The cationic starch has a molecular weight of 3.10⁴ to 12.10⁴ and a degree of substitution of 0.01 to 0.1. |