Filler paper and preparation method thereof

The invention provides filler paper and a preparation method thereof, and relates to the technical field of filler paper processing. A preparation method of the filler paper comprises the following steps: mixing paper pulp fibers with water, heating until boiling, adding fly ash and talcum powder to obtain slurry, and continuously heating; adding starch into water, stirring and mixing to obtain a starch solution; and dropwise adding a starch solution into the boiled slurry, continuously stirring, cooling, putting into a mold, and drying. The filler paper has the advantages of being smooth in surface, good in whiteness, good in tensile index and tear index and low in water absorption rate. According to the preparation method, the tensile strength and tear strength of the filler paper can be remarkably improved, the whiteness of the paper is improved, the water absorption rate of the paper is reduced, the quality of the filler paper is better, and the service life is longer. 本申请提供一种填料纸及其制备方法，涉及填料纸加工技术领域。一种填料纸，包