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Print-ink stacked body

A printing ink and laminate technology, applied in the direction of ink, layered products, synthetic resin layered products, etc., can solve the problems of low pigment dispersion, insufficient design, low gloss of ink coating film surface, etc., to achieve gloss Excellent, residual solvent reduction effect

Inactive Publication Date: 2015-09-16
TOYO INK SC HOLD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the pigment dispersibility is lower than that of polyamide resin, the glossiness of the surface of the ink coating film tends to be low, and there is a problem of insufficient designability.

Method used

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Examples

Experimental program
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Embodiment

[0089] Hereinafter, although an Example is given and this invention is demonstrated in detail, this invention is not limited to these Examples. In addition, although the evaluation of the gravure printing method was performed in the Example of this application, since the same printed matter can also be produced by flexographic printing, it is absolutely not intended to limit the printing method. Parts and % in the present invention represent parts by mass and % by mass unless otherwise noted.

[0090]

Synthetic example 1

[0092] 1945.7 parts of polypropylene glycol (PPG1000, manufactured by NOF Corporation) with a number average molecular weight (hereinafter referred to as Mn) of 1000, and 778.5 parts of isophorone diisocyanate were added to a four-necked flask equipped with a stirrer, a thermometer, a reflux cooler, and a nitrogen introduction tube. 0.30 parts of stannous 2-ethylhexanoate and 900 parts of ethyl acetate, reacted at 85°C for 3 hours under a nitrogen stream, added 1000 parts of ethyl acetate and cooled to obtain a solvent solution of terminal isocyanate prepolymer 4624.5 share. Next, to a mixture obtained by mixing 275.4 parts of isophorone diamine, 0.42 parts of di-n-butylamine, 3000 parts of ethyl acetate, and 2100 parts of isopropanol, slowly added the obtained terminal isocyanate prepolymer 4624.5 parts at room temperature. parts, followed by reaction at 50° C. for 1 hour to obtain a polyurethane varnish 1 with a solid content of 30% and a weight average molecular weight of 3...

Synthetic example 2

[0094] Into a four-necked flask equipped with a stirrer, a thermometer, a reflux cooler, and a nitrogen inlet tube, 972.9 Mn1000 polyester diol (PMPA1000, manufactured by Kuraray) obtained from adipic acid and 3-methyl-1,5-pentanediol was added. 972.9 parts of Mn1000 polypropylene glycol (PPG1000, manufactured by NOF Corporation), 778.5 parts of isophorone diisocyanate, 0.30 parts of stannous 2-ethylhexanoate, and 900 parts of ethyl acetate, at 85°C under a nitrogen stream After reacting for 3 hours, 1000 parts of ethyl acetate was added and cooled to obtain 4624.5 parts of a solvent solution of a terminal isocyanate prepolymer. Next, to a mixture obtained by mixing 275.4 parts of isophoronediamine, 0.42 parts of di-n-butylamine, 3000 parts of ethyl acetate, and 2100 parts of isopropyl alcohol, the obtained terminal isocyanate prepolymer was slowly added at room temperature 4624.5 parts, followed by reaction at 50° C. for 1 hour to obtain a polyurethane varnish 2 with a solid ...

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Abstract

The present invention relates to a print-ink stacked body obtained by stacking, upon a transparent plastic film (1), a white ink film layer (2) formed using print ink including a polyurethane resin (A) and a white inorganic pigment, and a coloured ink film layer (3) formed using print ink including a polyamide resin (B) and an organic pigment, in that order, said print-ink stacked body wherein the polyurethane resin (A) is obtained by causing a reaction between an organic diamine and a urethane prepolymer having an isocyanate group at a terminal thereof, said urethane prepolymer being obtained by causing a reaction between a polymer polyol and polyisocyanate. According to the present invention, an ink stacking method can be used to produce an ink stacked body exhibiting, among other necessary properties, excellent white / colour-layer gloss, while reducing the usage amount of residual solvents.

Description

technical field [0001] The present invention relates to a printed ink laminate of an ink for coating various plastic films, plastic sheets, or synthetic resin products. More specifically, it relates to an ink laminate having excellent white / color overlapping gloss, reducing residual solvents, and other necessary physical properties by a lamination method of inks. Background technique [0002] In recent years, printing is generally used to decorate and protect the surface of product packaging, and the quality of printing, such as the design of the printed matter, also affects consumers' desire to buy. Therefore, high designability is required for printing inks. [0003] In order to realize such design properties required by consumers, polyamide resins having high pigment dispersibility are often used as binders of printing inks for surface printing. High gloss and high color rendering can be achieved by using polyamide resin. However, if a polyamide resin is used, the resi...

Claims

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Application Information

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IPC IPC(8): B32B27/20B32B27/34B32B27/40C09D11/10
CPCC09D11/102C09D11/322B32B27/40B32B27/08B32B27/20B32B2264/10B32B27/34
Inventor 野田伦弘安田秀树
Owner TOYO INK SC HOLD CO LTD
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