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A kind of white board paper suitable for high-speed printing and its preparation method

A high-speed printing, whiteboard paper technology, applied in the fields of printing, packaging, and papermaking, can solve the problems that the inkjet coating formula cannot adapt to the high-speed printing mode, the influence of the penetration and diffusion of ink and paper, and the inkjet coating cannot be applied to high-speed printing. , to achieve good ink absorption and color rendering ability, full color, and reduce production costs.

Active Publication Date: 2021-09-21
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hanhong Group has successfully developed an industrial digital printer for digital printing of corrugated cardboard. It is the first time to use the Single Pass technology equipped with Kyocera nozzles, which makes the digital printing of cartons transition from traditional scanning printing to industrial-grade rapid production. The printing speed The maximum speed is 150m / min, and the printing accuracy is 600x 1800dpi. This high-speed printing method puts forward new requirements and challenges for inkjet printing paper. When this industrial digital printer prints at high speed, the position of the ink head is fixed, and the paper passes through the ink head at high speed. At the lower end, the ink head ejects ink to the surface of the paper through the piezoelectric method. At this time, there is a large speed difference between the ink and the paper. Penetration and diffusion play a role and conventional inkjet coating formulations cannot accommodate this high speed printing mode
[0004] Therefore, a kind of white board paper suitable for high-speed printing and its preparation method have been developed to solve the technical defect that the inkjet coating cannot be applied to high-speed printing in the prior art, which has become a problem to be solved urgently in this field

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A kind of white board paper suitable for high-speed printing and its preparation method
  • A kind of white board paper suitable for high-speed printing and its preparation method
  • A kind of white board paper suitable for high-speed printing and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) 90 parts of calcium carbonate (calcium carbonate is a spherical particle, by mass percentage, the particle size of 0-0.4um accounts for 5-8%, the particle size of 0.4-1um accounts for 75-85%, and the particle size of 1um- 2um accounts for 10-25%), 4 parts of polyvinyl alcohol, 1 part of modified starch, 5 parts of dimethylaminoethyl polyacrylate quaternary ammonium chloride, 0.025 parts of polyether defoamer, and 66.7 parts of water to prepare a coating , The solid content of the paint is 60%.

[0059] (2) the prepared coating is coated at a quantitative rate of 420g / m 2 The surface of the white board paper (front side), the coating method is curtain coating, and the coating amount is 12g / m 2 , the drying temperature is 160°C.

[0060] (3) Calendering the coated paper sample to obtain the white board paper suitable for high-speed printing, the calendering temperature is 230° C., and the pressure is 10 kN / m. .

Embodiment 2

[0062] (1) 100 parts of calcium carbonate (calcium carbonate is a spherical particle, by mass percentage, the particle size of 0-0.4um accounts for 5-8%, the particle size of 0.4-1um accounts for 75-85%, and the particle size of 1um- 2um accounts for 10-25%), 8 parts of polyvinyl alcohol, 3 parts of polyvinylamine, 0.075 parts of mineral oil defoamer, and 111 parts of water are formulated into a coating with a solid content of 50%.

[0063] (2) coating the prepared coating at a quantitative rate of 150g / m 2 The surface of the white board paper (front side), the coating method is knife coating, and the coating amount is 6g / m 2 , the drying temperature is 120°C;

[0064] (3) Calendering the coated paper sample to obtain the white board paper suitable for high-speed printing, the calendering temperature is 150° C., and the pressure is 50 kN / m.

Embodiment 3

[0066] (1) 110 parts of calcium carbonate (calcium carbonate is a spherical particle, by mass percentage, the particle size of 0-0.4um accounts for 5-8%, the particle size of 0.4-1um accounts for 75-85%, and the particle size of 1um- 2um accounts for 10-25%), 9 parts of polyvinyl alcohol, 1 part of carboxymethyl cellulose, 2 parts of water-based polyurethane, 0.1 part of silicone defoamer, and 183.1 parts of water to prepare a top coat paint with a solid content of 40 %.

[0067] (2) The prepared coating is coated at a quantitative rate of 100g / m 2 The surface of the white board paper (front side), the coating method is bar coating, and the coating amount is 4g / m 2 , the drying temperature is 70°C.

[0068] (3) Calendering the coated paper sample to obtain the white board paper suitable for high-speed printing, the calendering temperature is 60° C., and the pressure is 60 kN / m.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention belongs to the field of papermaking technology and printing and packaging technology, and provides white board paper suitable for high-speed printing and a preparation method thereof. The preparation method comprises the following steps: coating paint on the surface of the base paper layer to form a coating layer, drying and calendering to obtain the white board paper suitable for high-speed printing. In the preparation method provided by the present invention, by constructing a porous functional coating as the top coat of the white board paper, the prepared white board paper meets the high-speed printing mode requirements of an industrial digital printer, and after printing, printed matter with full color and high definition can be obtained; The present invention innovatively uses calcium carbonate as the coating pigment, and innovatively puts forward relevant requirements for the shape and particle size distribution of calcium carbonate, so that the prepared white board paper can not only meet the requirements of the low-speed printing mode of ordinary printers, but also the optimized coating Layer structure, there will be no problems such as dull color or color cast, so it can be used in high-speed printing mode.

Description

technical field [0001] The invention belongs to the technical field of papermaking, printing and packaging, and in particular relates to a whiteboard suitable for high-speed printing and a preparation method thereof. Background technique [0002] As the main paper type of carton paper, white board paper is widely used in the packaging of food, medicine, household appliances, daily necessities, knitted cotton fabrics, stationery, etc., and its application scope covers all fields of national production and life. component. At present, the surface of the whiteboard paper on the market has no coating layer and is directly used for digital printing. The ink cannot form a good ink layer and better color rendering effect on the surface of the whiteboard paper. The color of the printed pattern is dull, which cannot meet the market demand. [0003] In addition, with the continuous advancement of digital printing technology, the advent of new industrial digital printers also puts for...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H19/38D21H21/54D21H19/54D21H19/52D21H19/60D21H19/46D21H19/62D21H19/44D21H21/14B41M5/52
CPCB41M5/5218B41M5/5245B41M5/5254B41M5/5263B41M5/5281D21H19/385D21H19/44D21H19/46D21H19/52D21H19/54D21H19/60D21H19/62D21H21/14D21H21/54
Inventor 陈港张俊奇蔡庆辉
Owner SOUTH CHINA UNIV OF TECH
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