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Coated paper, coated base material, and method of evaluating property of ink drying

A technology of coating substrates and coated papers, applied in papermaking, paper testing, pigmented coatings, etc., to achieve the effects of excellent paper alignment and accurate ink drying

Inactive Publication Date: 2018-04-17
NIPPON PAPER IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] As a method for quantitatively evaluating the pore structure of paper, the mercury intrusion intrusion method (Patent Document 4) is generally widely used, but since mercury is a toxic substance, careful attention is required during handling, so for human health and environmental considerations, In recent years, the number of companies and organizations that have restricted use is increasing

Method used

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  • Coated paper, coated base material, and method of evaluating property of ink drying
  • Coated paper, coated base material, and method of evaluating property of ink drying
  • Coated paper, coated base material, and method of evaluating property of ink drying

Examples

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preparation example Construction

[0096] (1) Preparation of base paper

[0097] Regarding the base paper, as already mentioned. The base paper can be produced by a known papermaking method.

[0098] For example, it can be carried out using a fourdrinier paper machine including a top wire, etc., an on topformer (on topformer), a gap former, a cylinder paper machine, and a combination of a fourdrinier paper machine and a cylinder. Cardboard paper machine for paper machine, Yankee dryer paper machine, etc. The pH at the time of papermaking may be any of acidic, neutral, and alkaline, and is preferably neutral or alkaline. The papermaking speed is not particularly limited.

[0099] (2) Smoothing treatment of base paper

[0100] Before applying the pigment coating solution to the obtained base paper, it is preferable to subject the base paper to a smoothing treatment using various calendering devices. As the said calendering apparatus, the calendering apparatus normally used, such as a super calender and a sof...

Embodiment 1-1

[0215] Use heavy calcium carbonate slurry (manufactured by IMERYS, trade name: Carbital 97, the ratio of particles with a particle diameter of 2 μm or less: 97%) 55 parts by weight (solid content) and 2nd grade clay (manufactured by IMERYS, trade name: KCS, the particle diameter is the proportion of particles below 2 μm: 85%) 45 parts by weight (solid content) as a pigment, in which 4 parts by weight of styrene-butadiene copolymer latex, oxidized starch (manufactured by Japan Corn Starch Co., Ltd., A product name: SK200) 6 parts by weight was used as a binder, and water was further added to obtain a pigment coating liquid 1 having a solid content concentration of 66% by weight.

[0216] As the base paper, prepare 100% by weight of chemical pulp, 13% by weight of light calcium carbonate as a filler, and a density of 0.73g / cm 3 , weight 98g / m 2 premium paper. Pigment coating solution 1 was applied to the base paper at a dry coating weight of 15.0 g / m per side using a knife coa...

Embodiment 1-2

[0218] Use 55 parts by weight (solid content) of causticized light calcium carbonate slurry 1 (D50=1.02 μ m) and 2 grade clay (manufactured by IMERYS, trade name: KCS, D50=4.9 μ m) 45 parts by weight (solid content) as The pigment was mixed with 4 parts by weight of styrene-butadiene copolymer latex 1 (manufactured by A&L Corporation, trade name: PB1537), and 6 parts by weight of oxidized starch (manufactured by Japan Corn Starch Co., Ltd., trade name: SK200) as a binder, Water was further added to obtain a pigment coating liquid 1' having a solid content concentration of 66% by weight.

[0219] A coated printing paper was obtained in the same manner as in Example 1-1, except that the pigment coating liquid 1' was used instead of the pigment coating liquid 1.

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Abstract

The invention addresses the problems of providing a coated paper having an excellent property of paper alignment, providing a coated base material having an excellent property of ink drying, and providing a method of accurately evaluating the property of ink drying. The first problem is solved by a coated paper for printing that has a white-paper glossiness of less than 30% according to JIS-P8142,and a kinetic coefficient of friction greater than the static coefficient of friction, in terms of the static coefficient of friction and kinetic coefficient of friction measured according to ISO 15359. The second problem is solved by a coated base material having a sheet base material and a pigment coating layer provided thereon, the pore volume V of the pigment coating layer according to nitrogen adsorption being 0.04 cm3 / g or greater. The third problem is solved by a method that includes a step of measuring the pore volume V or the average pore diameter m of the pigment coating layer by nitrogen adsorption.

Description

technical field [0001] The present invention relates to a coated paper, a coated substrate, a method for producing the same, and a method for evaluating ink drying properties. More specifically, the present invention relates to a coated paper for matte printing and a method for producing the same. Background technique [0002] A coated base material having a coating layer on a sheet-like base material is used in various applications including printing applications. Coated paper in which the sheet-like base is paper (base paper) is also industrially particularly important among coated base materials. [0003] Coated paper is roughly classified into glossy coated paper and matte coated paper. Gloss coated paper includes art paper, super art paper used in high-end printing in the past, or coated paper used in catalogs, brochures, etc., which are printed and finished to form a glossy white paper with high gloss and printing gloss. . Matte coated paper is a coated paper with ...

Claims

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Application Information

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IPC IPC(8): D21H19/38D21H23/34G01N33/34
CPCD21H19/38D21H23/34G01N33/34
Inventor 外冈辽稻田周平菱沼记之吉松丈博柿木诗织小菅笃高桥和哉
Owner NIPPON PAPER IND CO LTD
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