METHOD FOR INCREASING PAPER STRENGTH OF PAPER AND METHOD FOR SIZING

摘要

PROBLEM TO BE SOLVED: To provide an improved method for increasing the paper strength of a paper and a method for sizing the paper and to obtain the paper produced by the methods. SOLUTION: The paper strength is improved by coating a paper with one or more kinds of ultrafine particle dispersions of titanium oxides or titanium hydroxides. Furthermore, a contact treatment of the resultant paper with a specific organic compound is carried out to improve sizing properties.