A papermaking process of single-sided blue engineering paper

Abstract

The invention provides a coating process of single-sided blue engineering paper. The coating process comprises a paint preparation step, and according to the paint preparation, solid content of paintis 2%-3%, viscosity of the paint is 3-5 mpa.s, and pH value of the paint is 8.2-8.4. The paint is prepared from components in percentage by mass as follows: 0.2% of a color toner, 1.5% of latex, 0.1%of CMC and 0.08% of isothiazolinone. According to single-sided blue engineering paper prepared with the process, deviation of basis weight in cross direction is smaller than or equal to 3 g / m<2>, dustcontent is lower than or equal to 40 / m<2>, and water content is 4.2%-4.7%.

Description

technical field

[0001] The invention belongs to the technical field of papermaking, in particular to a papermaking process of single-sided blue engineering paper. Background technique

[0002] In the survey and design industry, for a long time, the drawings provided for engineering construction projects and archived by the owners are single-sided blue engineering papers, and the drawings archived by the design units are base maps and blueprints. The main function of the base map is to archive and backup and use the original version; the main function of the blueprint is to provide construction and archive for reference. Everyone is used to this mode of operation. However, blueprints are not easy to store for a long time, and they will turn yellow, fade, and become blurred when exposed to water; the discharge of ammonia gas or the smell of developer pollutes the environment and seriously affects the occupational health of employees. ; The disadvantages of low work efficiency...

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