US 2026/0297850 A1 · METHOD FOR MANUFACTURING PAPER-MAKING FILLER USING MIXED SOLUTION OF ORGANIC FIBER AND INORGANIC COMPOUND AND USE THEREOF

Abstract

The present disclosure relates to a method for manufacturing a paper-making filler using a mixed solution of an organic fiber and an inorganic compound, and a use thereof. The paper including the paper-making filler manufactured by the manufacturing method according to the present disclosure has greatly improved bulk compared to paper using an existing ground calcium carbonate filler, thus exhibiting excellent breaking length and superior smoothness. With such characteristics, high-quality paper can be produced even when using a larger amount of filler than ground calcium carbonate, thereby enhancing economic efficiency, reducing the amount of organic fiber used, and achieving energy savings in drying.

Claims20

Dependent claims

A method for preparing a filler for papermaking of claim 12, comprising the steps of:

(1) preparing a mixed aqueous solution comprising an inorganic compound having an average size of 0.1 to 10 μm, the mixed aqueous solution having a solids content of 1 to 60 wt %;
(2) adding an ionic polymer to the mixed aqueous solution and stirring to form preflocs;
and
(3) preparing the filler for papermaking by, with respect to 100 parts by weight of the inorganic compound contained in the mixed aqueous solution in which the preflocs are formed, adding 10 to 1000 parts by weight of a calcium compound, and then injecting carbon dioxide at 10 to 80° C. until a pH is maintained at 7.0=1.0.

1 more element

Dependencies are inferred from the claim text.

Method for manufacturing paper-making filler using mixed solution of organic fiber and inorganic compound and use thereof

Life of this patent

Method for manufacturing paper-making filler using mixed solution of organic fiber and inorganic compound and use thereof

Life of this patent

Abstract

Claims20