Paper coating liquid and coated paper using the same

A coating and fluid technology, used in paper coating, papermaking, coating, etc., can solve the problems of the decline of surface characteristics and ink adhesion, the water retention and viscosity of difficult-to-coat fluids reaching a sufficient level, etc., to improve high-speed Excellent coatability and gloss, and the effect of improving peeling

Inactive Publication Date: 2009-06-24
SOMAR CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still difficult to achieve a sufficient level of water retention and viscosity of the coating fluid
Therefore, it is not always possible to suppress the decline in surface properties and ink adhesion, and a coating fluid with further improved water retention and viscosity is desired.

Method used

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  • Paper coating liquid and coated paper using the same
  • Paper coating liquid and coated paper using the same
  • Paper coating liquid and coated paper using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] 70 parts by mass of clay, 30 parts by mass of heavy calcium carbonate, 6 parts by mass of alkaline thickening type styrene-butadiene copolymer latex (as solid content), and a dispersant (manufactured by Somar Corporation, trade name " SDA—40K") 0.1 parts by mass (as solid content) were mixed. After adding water so that the concentration of the total solid content became 62% by mass, 0.2 part by mass of the water-retaining agent (1) was added and mixed uniformly to prepare a gravure printing paper coating fluid. Various physical properties of the prepared gravure printing paper coating fluid are shown in Table 1. Next, this gravure printing paper coating fluid is coated on fine paper (meter weight: 60g / m 2 ) on one side, so that the adhesion of solid components reaches 15g / m 2 , and dried to make coated paper. Various physical properties of the produced coated paper are shown in Table 1.

Embodiment 2

[0113] Except having used the water retaining agent (2) instead of the water retaining agent (1), it carried out similarly to the said Example 1, and prepared the gravure printing paper coating fluid. Various physical properties of the prepared gravure printing paper coating fluid are shown in Table 1. Next, using this gravure printing paper to coat a fluid, it carried out similarly to Example 1 mentioned above, and produced the coated paper. Various physical properties of the produced coated paper are shown in Table 1.

Embodiment 3

[0115] Except having used the water retaining agent (3) instead of the water retaining agent (1), it carried out similarly to the said Example 1, and prepared the gravure printing paper coating fluid. Various physical properties of the prepared gravure printing paper coating fluid are shown in Table 1. Next, using this gravure printing paper to coat a fluid, it carried out similarly to Example 1 mentioned above, and produced the coated paper. Various physical properties of the produced coated paper are shown in Table 1.

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Abstract

Disclosed is a paper coating liquid containing a paper coating liquid concentrate which contains a pigment and a binder as basic components, and a copolymer which is obtained by polymerizing a monomer component containing (A) an a,ss-unsaturated carboxylic acid monomer and/or a salt thereof and (B) a monomer represented by the general formula (1) below (wherein An represents ethylene oxide or the like, n represents one of numbers having an average of 10-300, X represents one or more groups selected from the group consisting of -CH2-, -C(O)- and -C(O)-NH-, m represents 0 or 1, and R represents a hydrocarbon group).

Description

technical field [0001] The present invention relates to a novel paper coating fluid and coated paper produced using the paper coating fluid. More specifically, it relates to a paper coating fluid having both improved water retention and viscosity, and a coated paper using the paper coating fluid and having improved coating film surface properties and ink adhesion. Background technique [0002] In general, printing paper is provided with a coating layer (coating film) formed using a coating fluid (paper coating fluid) on its surface in order to improve its smoothness, glossiness, printability, and the like. The coating fluid is usually prepared as a slurry in which pigments such as clay and ground calcium carbonate and binders such as latex and starch are dispersed in water. [0003] When using a coating fluid to manufacture printing paper (coated paper), the coating fluid diluted to an appropriate concentration according to requirements is supplied from a preparation tank t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/58
CPCD21H19/58D21H19/00
Inventor 常川谦二三轮贵宏
Owner SOMAR CORP
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