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METHOD FOR PRODUCING PAPER COATING SOLUTION AND COATED PAPER COATED WITH THE PAPER COATING SOLUTION PRODUCED BY THE METHOD
METHOD FOR PRODUCING PAPER COATING SOLUTION AND COATED PAPER COATED WITH THE PAPER COATING SOLUTION PRODUCED BY THE METHOD
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机译:纸涂料溶液的生产方法以及用该方法生产的纸涂料溶液涂覆的涂料纸
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摘要
A coating solution comprising: (A) an aragonite-type light calcium carbonate microparticle having an average major axis diameter of 1.0 to 2.8 m and an average minor axis diameter of 0.15 to 0.3 m, which is produced by diluting a calcium hydroxide slurry that has been treated by high-speed shearing until the slurry has a viscosity of 1000 cP or more at a concentration of 400 g/l to a concentration more than 50 g/l and then blowing carbon dioxide into the diluted slurry at a reaction starting temperature of 20 to 60ºC and at a rate of 1 to 3 l/min per kg of calcium hydroxide; and (B) a pigment comprising a wet heavy calcium carbonate cake. The coating solution enables to provide a coated paper having an excellent degree of brilliance and an excellent degree of whiteness, despite containing no kaolin.
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机译:涂料溶液,其包含:(A)通过稀释具有以下特征的氢氧化钙浆料而制备的文石型轻质碳酸钙微粒,其平均长径为1.0〜2.8m,平均短径为0.15〜0.3m。通过高速剪切进行处理,直到浆料在400 g / l的浓度下粘度达到1000 cP或更高,再到浓度超过50 g / l,然后在反应开始温度为750℃下向稀释的浆料中吹入二氧化碳20至60ºC,以每千克氢氧化钙1至3 l / min的速率; (B)包含湿重碳酸钙饼的颜料。尽管不含高岭土,该涂布液仍能够提供具有优异的光泽度和优异的白度的涂布纸。
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