The product of calcium carbonate, pigment for paper coating, process for producing a paper sheet having high gloss, paper product, and.Method for improving the brightness of sheet of a paper product

摘要

"The product of calcium carbonate, pigment for paper coating, process for producing a paper sheet product having high gloss paper, and.Method for improving the brightness of sheet of a paper product.A pigment for paper coating is provided which includes a mixture of a first and a second particle of PCC (precipitated calcium carbonate) aragonu00edtico.The first particles of the blended pigment have an average particle size (APS) of about 0.4 microns and the second particles of the blended pigment have an average particle size (APS) of about 0.5 microns.The pigment mixed preferably includes a right weight of about 50: 50 to 80: 20 with a ratio by weight of 60: 40 being the most preferred, respectively, of the first particles of 0.4 micron to the second particles of 0.5 micron.Also provided is a method for preparing coated paper, which includes preparing the pigment of CCP aragonu00edtico mixed, adding a binder,And applying the pigment to the basic substance of paper in a folder containing a binder and or additives.Preferably,The pigment of precipitated calcium carbonate aragonu00edtico mixed is present in an amount of about 30 percent by weight to about 85 percent by weight of the mixture with about 70 per cent.By weight to about 15 percent by weight of a balance being clay before preparing the paste.