High-performance low-basis-weight dictionary paper and preparation method thereof

Abstract

The invention discloses high-performance low-basis-weight dictionary paper and a preparation method thereof. The paper comprises a plant fiber layer and coatings arranged on two sides of the plant fiber layer; the basis weight of the paper is 22-30g / m <2>; and slurry for preparing the plant fiber layer comprises, by mass, 45%-65% of bleached natural-color softwood pulp and 35%-55% of bleached hardwood pulp. The paint for preparing the coatings is prepared from the following raw materials in parts by weight: 200 to 300 parts of modified filler, 40 to 60 parts of retention aid, 1 to 2 parts of water-retaining agent, 1 to 3 parts of lubricating agent, 0.05 to 0.1 part of defoaming agent, 5 to 10 parts of sodium hydroxide and 500 to 1000 parts of water. A modified filler is used in the coatings on the two sides of the plant fiber layer, substances introduced into the surface of the modified filler can react with fibers, so that the filler is firmly connected with the fiber layer, and the retention rate of the filler is increased; and the phenomena of page penetration and deinking can be prevented by adsorbing color generation substances in printing ink.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a high-performance low-weight dictionary paper and a preparation method thereof. Background technique [0002] Dictionary paper is a kind of high-grade printing paper, which is characterized by high opacity, smoothness and durability, and the paper surface needs to be white and delicate, strong and durable. Generally improve the opacity, whiteness and ink absorption of dictionary paper by adding fillers such as calcium carbonate in the dictionary paper preparation process, for example, " a kind of production method of coated dictionary paper " disclosed on Chinese patent literature, its Notification number CN102839559B, using double-sided coating method to prepare dictionary paper, the coating formula includes: 80 parts of heavy superfine calcium carbonate, 20 parts of rutile titanium dioxide, 10-15 parts of styrene-butadiene latex, 15-20 parts of quaternary ammonium type Ca...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome that in the existing dictionary paper preparation process, since there is no binding force between the filler and the fiber, it is easy to separate from the flocs and lose under the action of an external force, and the retention rate of the filler is not high, which affects the performance of the paper; and The particle size of the filler is small and easy to agglomerate, which affects its light scattering performance and the uniformity of the paper. A high-performance low-weight dictionary paper and its preparation method are provided. The surface of the filler is modified to improve the dispersion of the filler. Through the reaction between the modified filler and the fiber, the filler and the fiber are chemically connected to improve the retention rate of the filler, thereby improving the performance of the paper