Preparation method of duplicating paper with high color development degree

Abstract

The invention discloses a preparation method of duplicating paper with a high color development degree and belongs to the technical field of duplicating paper preparation. The preparation method comprises the following steps: sequentially carrying out pulping, pulp preparation, papermaking molding, surface glue application, rewinding, cutting and selecting as well as packaging and molding on the components in percentage by weight: 5-10% of bleached softwood pulp, 3-5% of polylactic acid fibers, 20-40% of bleached hardwood pulp, 10-20% of alkaline peroxide mechanical pulp, 30-45% of straw pulp,2-3% of powdered ink adhesive agent, 0.2-0.5% of solid aqueous resin and 3-5% of sodium polyacrylate. The duplicating paper is prepared by adopting a specific preparation method, and the duplicatingpaper produced by synthesizing the paper pulp raw materials according to a certain weight ratio is light in weight, capable of improving the static bending strength by 50%, little in deformation during printing or duplicating, not easy to warp, capable of favorably adsorbing ink during printing or duplicating, good in color fastness and printed image quality and high in color saturation stability.

Description

technical field [0001] The invention belongs to the technical field of copy paper preparation, and in particular relates to a preparation method of copy paper with high color rendering. Background technique [0002] China is a big paper-making country. In 2011 and 2012, the output exceeded 100 million tons for two consecutive years, ranking first in the world. The amount of wood pulp alone is more than 20 million tons per year, and copy paper is a paper type that requires high technical indicators among these paper products. Traditional copy paper production technology usually uses bleached chemical softwood pulp and bleached chemical hardwood pulp as the main raw materials, or adds 5 to 15% bleached straw pulp (or other non-wood fibers) and uses calcium carbonate or talcum powder as filler , The static bending strength of the copy paper is low, the deformation is large when printing or copying, and it is easy to warp. When printing or copying, it cannot absorb ink well, th...

AI Technical Summary

Problems solved by technology

Traditional copy paper production technology usually uses bleached chemical softwood pulp and bleached chemical hardwood pulp as the main raw materials, or adds 5-15% bleached straw pulp (or other non-wood fibers) and uses calcium carbonate or talcum powder as filler , the static bending strength of the copy paper is low, the deformation is large when printing or copying, and it is easy to warp. When printing or copying, it cannot absorb ink well, the color fastness is not good, the quality of the printed image is poor, and the color saturation stability is poor.