| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing coated paper for printing excellent in whiteness, opacity, white paper gloss and print gloss and also improved in strike-through in printing operation, compared to conventional coated paper of equal coat pickup level. SOLUTION: The method for producing the coated paper for printing comprises coating base paper with a coating liquid containing a pigment and an adhesive. In this method, the pigment comprises a precipitated calcium carbonate-silica composite which is obtained by mixing precipitated calcium carbonate and an aqueous metal silicate solution together and, at the boiling point of the mixture or lower, and adding a mineral acid or acid metal salt or mixture thereof to the above mixture; and the coating liquid contains 1-30 pts.wt. of the precipitated calcium carbonate-silica composite based on 100 pts.wt. of the total pigment. COPYRIGHT: (C)2007,JPO&INPIT
|
