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A papermaking process of single-sided blue engineering paper

A papermaking process and engineering paper technology, applied in the field of papermaking, can solve the problems of low absorption rate of coating ink, different shades of paper surface, poor air permeability, etc. Effect

Active Publication Date: 2018-07-27
WEIFANG HENGLIAN SPECIALTY PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, the single-sided blue engineering paper has the following defects: (1) The ink absorption rate of the coating is not high, and the ink spreads after printing; (2) The uniformity is poor, the air permeability is poor, the color of the paper surface is different after coating, and the smear is serious ; (3) Folding and warping during printing

Method used

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  • A papermaking process of single-sided blue engineering paper
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1 A papermaking process of single-sided blue engineering paper

[0046] 1. Pulping

[0047] (1) Preparation of long fibers: pulverized by a hydropulper, and the 2.6mm bleached kraft softwood long fiber wood pulp was passed through a double disc refiner beater, the long fiber beating current was 300A, the beating concentration was 4.0%, and the beating degree was 35° SR;

[0048] (2) Preparation of poplar pulp: self-made poplar pulp with a fiber length of 0.85-0.9 mm is transferred through the pulp pool to the knocking pool, and then passed through a double-disk beating machine with a beating current of 270A and a beating concentration of 4.1%. The degree of beating is 36°SR, and the slurry is prepared.

[0049] 2. Mixed pulp

[0050] Start the automatic batching equipment, and pump the long-fiber pulp and poplar pulp into the mixing tank respectively. The ratio of long-fiber pulp to poplar pulp is 1.2:1, that is, the long-fiber pulp accounts for 55% of the tot...

Embodiment 2

[0070] Example 2 A papermaking process of single-sided blue engineering paper

[0071] 1. Pulping

[0072] (1) Preparation of long fibers: pulverize through a hydropulper, and pulverize 2.7mm bleached kraft coniferous long fiber wood pulp through a hydropulper, transfer it to the knocking pool, pass through a double disc mill beater, and Fiber beating current 310A, beating concentration 4.0%, beating degree 37°SR;

[0073] (2) Preparation of poplar pulp slurry: self-made poplar pulp with a fiber length of 0.87 mm is transferred to the front pool through the pulp pool, and then transferred to the rear pool of poplar pulp through a double-disc mill beater, and the beating is controlled The power is 120-145kwh, the beating current is controlled at 280 A, the beating concentration is 4.1%, and the beating degree is 36°SR to prepare poplar pulp.

[0074] 2. Mixing and pulping

[0075] Start the automatic batching equipment, and pump the long-fiber pulp and poplar pulp into the m...

Embodiment 3

[0095] Example 3 A papermaking process of single-sided blue engineering paper

[0096] 1. Pulping

[0097] (1) Preparation of long fibers: pulverize through a hydropulper, and pulverize 2.7mm bleached kraft coniferous long fiber wood pulp through a hydropulper, transfer it to the knocking pool, pass through a double disc mill beater, and Fiber beating current 320A, beating concentration 4.0%, beating degree 38°SR;

[0098] (2) Preparation of poplar pulp slurry: self-made poplar pulp with a fiber length of 0.87 mm is transferred to the front pool through the pulp pool, and then transferred to the rear pool of poplar pulp through a double-disc mill beater, and the beating is controlled The power is 120-145kwh, the beating current is controlled at 280A, the beating concentration is 4.1%, and the beating degree is 38°SR to prepare poplar pulp pulp.

[0099] 2. Mixed pulp

[0100] Start the automatic batching equipment, and pump the long fiber pulp and poplar pulp into the mixin...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H11/10D21H17/28D21H19/36D21H21/18
CPCD21H11/10D21H17/28D21H19/36D21H21/18
Inventor 汤志久杨振永赵艳玲任怀燕凡菜华李兴政牛玉镇
Owner WEIFANG HENGLIAN SPECIALTY PAPER
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