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Manufacturing method of coated paper for printing

A manufacturing method and technology for coating paper, which are applied in the directions of papermaking, papermaking, textiles and papermaking to achieve the effect of excellent ink drying

Active Publication Date: 2013-01-09
OJI HLDG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] From the above, there is still room for improvement as a method for efficiently producing coated printing paper with excellent printing quality

Method used

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  • Manufacturing method of coated paper for printing
  • Manufacturing method of coated paper for printing

Examples

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Effect test

Embodiment 1

[0089] The present invention will be explained below with reference to examples, which should not be construed as limiting the invention. "Parts" and "%" in the examples mean "parts by mass" and "% by mass" unless otherwise specified.

[0090]

[0091] (production of base paper)

[0092] Using a Lo-solids digester (manufactured by ANDRITZ Co., Ltd.), the broad-leaved tree chips consisting of Acacia mangium: Eucalyptus grandis = 30:70 (mass ratio) were subjected to sulfuric acid by the Lo-solids steaming method Salt (craft) cooking. Prepare white liquor with a degree of sulfidation of 28, and add the white liquor to the chip supply system at a rate of 10% active alkali relative to the absolute dry weight of each chip, divide and add 8% to the cooking area, and 2% to the washing area. %, cooking at a cooking temperature of 146°C. The boiled flakes are disentangled (defiberized), then undergo a washing process, a screening process, and then a secondary washing process to obt...

Embodiment 2

[0103] In Example 1, in the drying process after coating the aqueous coating liquid B, after drying the coating layer moisture to 20% with the composite type drying unit, and further drying to 5.0% moisture using a hot air dryer, Coated paper was obtained in the same manner as in Example 1.

Embodiment 3

[0105] In Example 2, except that the coating method of the coating water-based coating liquid A and B is changed from a knife coating method to a roll coating method, and the solid content concentration of the coating liquid B is changed to 60%, the same as the implementation Example 2 The same method was used to obtain coated paper.

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PUM

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Abstract

The purpose of the invention is to provide a manufacturing method of coated paper which is excellent in ink dryness, causes no ink stain, has no difference in printing quality in the paper web direction, and is high in efficiency. According to the manufacturing method of coated paper for printing with a pigment coated layer, base paper forming the coated paper is obtained by papermaking through a twin-wire former paper machine; at least one layer of the pigment coated layer forming the coated paper comprises more than 1 part by mass of starch relative to 100 parts by mass of the total pigment; the starch is coated on a substrate walking with a speed of more than 1000 m / min; a drying procedure is adopted for drying, and at least one step of the drying procedure is drying through a composite drying unit combining an infrared drying mode with a hot-wind drying mode.

Description

technical field [0001] The present invention relates to a method for producing coated paper for printing. Background technique [0002] Generally, coated paper for printing is produced by coating base paper with a coating solution mainly composed of pigments and binders, and drying it. Coated coated paper (high-gloss printing paper, Cast-coated paper), coated art paper (art paper, cardboard, double-coated paper), coated paper, lightweight coated paper, etc. . These coated papers are printed in multiple colors or monochrome, and are widely used as commercial printed matter such as leaflets, brochures, posters, or publications such as books and magazines. In recent years, with the development of visualization and colorization of printed matter, the requirements for high-quality printing coated paper have also increased. White paper quality such as gloss, smoothness, whiteness, and printing smoothness Quality such as printing process and so on are paid attention to. In addi...

Claims

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Application Information

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IPC IPC(8): D21F9/00D21F5/00D21H23/34
Inventor 柳泽健司铃木由纪子
Owner OJI HLDG CORP
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