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Water-based ultraviolet curable overprint varnish composition

A technology for overprinting varnish and ultraviolet rays, applied in chemical instruments and methods, synthetic resin layered products, coatings, etc., can solve the problems of sensory evaluation, insufficient friction resistance, detachment of polyurethane resin beads, etc.

Active Publication Date: 2016-11-16
DAINIPPON INK & CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in order to impart the feeling of the same gist, a water-based coating agent composition obtained by using styrene-acrylic resin as a binder and fixing polyurethane resin beads (for example, Patent Document 5) has been studied, but it is designed to The heat-drying type after the coating agent is applied has limitations in the adhesive force and fixing force of the urethane resin beads, and the urethane resin beads are easily detached by friction, so the friction resistance cannot be said to be sufficient.
In addition, the evaluation method of the wet and soft feel of the varnish-coated surface is also limited to sensory evaluation by touching with hands and fingers, and numerical evaluation of surface physical properties and the like has not been established.

Method used

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  • Water-based ultraviolet curable overprint varnish composition

Examples

Experimental program
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Embodiment 1

[0041]

[0042] 27.0 parts of water-based aliphatic polyurethane dispersion with a glass transition temperature (Tg) of -80°C and an average particle size of 1.5 μm, 54.0 parts of water, 17.5 parts of N-(2-hydroxyethyl)acrylamide (HEAA), three 0.5 part of methylolpropane triacrylate (TMPTA) was mixed, stirred and dispersed using a mixer, and 2-hydroxy-2-methyl-1-phenyl-propan-1-one (DAROCUR1173, manufactured by BASF Corporation) was further added 1.0 part was used as a photopolymerization initiator, and it was dissolved completely, thereby preparing Example varnish-1.

[0043]

[0044] The raw materials were mixed according to the formulations shown in Table 1 and Table 2, stirred and dispersed using a mixer, and the photopolymerization initiator was completely dissolved, thereby preparing by the same method as Example Varnish-1.

[0045] The water-based ultraviolet curing type overprint varnishes (Example varnishes 1-5) and (Comparative example varnishes 1-6) prepared as ...

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Abstract

An object of the present invention is to provide a water-based ultraviolet curable overprint varnish composition that maintains a wet and soft feel like velvet or suede on a substrate such as a printed matter. The water-based ultraviolet curable overprint varnish composition is characterized in that it is a water-based ultraviolet curable overprint varnish combination containing a polyurethane resin, an ultraviolet curable monomer containing a water-soluble (meth)acrylate as an essential component, and water. wherein, the above-mentioned polyurethane resin / ultraviolet curable monomer = 1:2 to 2:1 (weight ratio), and the dynamic friction coefficient of the dry coating surface after coating of the above-mentioned water-based ultraviolet curable overprint varnish composition is 0.1 ~0.7, the increase rate of the dynamic friction coefficient when the measurement speed is increased from 2mm / s to 20mm / s is 10% or more.

Description

technical field [0001] The present invention relates to a water-based ultraviolet curable overprint varnish composition that is coated on the surface of printed matter such as paper to impart a soft touch such as velvet or suede to the surface. In particular, it relates to a water-based ultraviolet curable overprint varnish composition suitable for coating with an offset inline coater. Background technique [0002] Conventionally, in the field of commercial printing, mainly in package printing, coatings such as water-based varnish and UV CLEAR, which are called varnishes in the industry, have been performed on printed matter for the purpose of improving the appearance of printed matter and protecting the surface. Agent coating processing. In addition, a press process in which a printed matter coated with a water-based varnish is heated and pressurized using a mirror-finished stainless steel plate to impart a mirror gloss to the printed matter; and the printed matter is bond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04B32B27/30B32B27/40C09D4/02
CPCC08F220/58C08F283/006C09D4/06C09D175/04C08F222/103
Inventor 小林健作关野吉厚高桥雅人
Owner DAINIPPON INK & CHEM INC
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