Ultra-thin high-coverage raw impregnated paper and preparation method thereof

The invention provides ultra-thin high-coverage raw impregnated paper and a preparation method thereof, and belongs to the technical field of decorative raw paper preparation. The paper is prepared from the following components in parts by weight: 20-26 parts of bleached needle pulp, 40-52 parts of bleached broad leaf pulp, 25-45 parts of mineral filler, 5-10 parts of pigment, 1.0-3.0 parts of a wet strength agent, 0.5-1.0 part of retention aid and 0.3-0.7 part of a defoaming agent. The preparation method comprises the following steps: repulping, mixing pulp, grinding, and carrying out interweaving, squeezing, dehydrating and baking by adopting a multi-cylinder long mesh paper machine; wetting by a humidifier, pressing and polishing by a soft calendaring machine, rolling paper, cutting, and packaging. According to the raw paper, on the premise of guaranteeing the coverage and strength of raw paper, the ration of raw paper can be reduced, the paper yield can be increased, the glue absorption amount can be reduced, and the production cost can be reduced. The preparation method is simple and feasible.