Coated pearl paper and method for producing the same

A method for producing a coated pearl paper, comprising:

• a pearl paper forming process implemented by co-extruding polypropylene, calcium carbonate, silicon dioxide, and titanium dioxide through an extruder to form a pearl paper, wherein the pearl paper includes a major layer and two minor layers arranged at two sides of the major layer, the major layer includes a first resin and a plurality of first mixed inorganic particles, the first resin includes polypropylene, the first mixed inorganic particles include calcium carbonate, silicon dioxide, and titanium dioxide, each of the minor layers includes a second resin and a plurality of second mixed inorganic particles, the second resin includes polypropylene, and the second mixed inorganic particles include calcium carbonate, silicon dioxide, and titanium dioxide;
• and
• a coating process implemented by coating a coating liquid onto the pearl paper to form a coating layer on one of the minor layers of the pearl paper and form the coated pearl paper, wherein the coating liquid includes a third resin, a plurality of third mixed inorganic particles, and water;
• wherein the third resin is an acrylate graft-modified polyurethane resin, and the third mixed inorganic particles include calcium carbonate, silicon dioxide, and titanium dioxide;
• wherein, based on a total weight of the coating liquid being 100 wt %, a content of the third resin is between 18.5 wt % and 21.5 wt %, a content of the third mixed inorganic particles is between 4 wt % and 8 wt %, and a content of the water is between 71.8 wt % and 76.8 wt %.