Colored letter paper processing and dyeing method

Abstract

The invention discloses a colored letter paper processing and dyeing method which comprises the following steps: taking three primary colors of red, yellow and blue, and blending the three primary colors of red, yellow and blue in different proportions according to colors required by dyeing to obtain intermediate colors or complex colors so as to obtain a dye raw material; primarily adding littlewater into the obtained dye raw material, primarily stirring the dye into paste through a stirrer at the stirring speed of 100-120 r / min, then adding hot water at the temperature of 60-68 DEG C for dilution, and carrying out sufficient secondary stirring treatment at the rotating speed of 150-200 r / min to obtain a dye solution; filtering the dissolved dye liquor through a 150-200-mesh filter, andthen adding the dye liquor into paper pulp processing equipment such as a beater, a hydrapulper or a mixing tank, so as to mix the dye with the paper pulp to be processed. The mixing uniformity of thedye liquor and the paper pulp is improved, the coloring effect is better, the color brightness of the colored letter paper can be improved, and the colored letter paper is good in light resistance, stable in heat resistance and not prone to fading.

Description

technical field [0001] The invention belongs to the technical field of paper processing, and in particular relates to a color letter paper processing and dyeing method. Background technique [0002] With the rapid development of social economy, the use of colored paper is increasing, and colored letter paper is also enthusiastically used by people. The characteristics of colored paper are higher water absorption than ordinary paper, thicker pounds, and stronger fibers on the paper surface. In terms of fibers, most of the existing colored papers have small pores, poor coloring effect, and poor control over the dispersion and mixing of dyes, which makes the pulp absorb time for high-concentration dyeing solutions, resulting in uneven coloring. Contents of the invention [0003] The object of the present invention is to provide a color letter paper processing and dyeing method to solve the problems raised in the above-mentioned background technology. [0004] In order to ach...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of social economy, the use of colored paper is increasing, and colored letter paper is also enthusiastically used by people. The characteristics of colored paper are higher water absorption than ordinary paper, thicker pounds, and stronger fibers on the paper surface. In terms of fiber, most of the existing colored paper has small pores, poor coloring effect, and poor control over the dispersion and mixing of dyes, which makes the adsorption time of pulp to high-concentration dye solution, resulting in uneven coloring.