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Aqueous ultraviolet radiation-curable overprint varnish composition

A technology of overprinting varnish and ultraviolet rays, which is applied in the direction of chemical instruments and methods, synthetic resin layered products, coatings, etc., and can solve the problems of polyurethane resin bead detachment, adhesion, fixing force, and unformed surface physical properties.

Active Publication Date: 2015-11-11
DAINIPPON INK & CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Aqueous ultraviolet radiation-curable overprint varnish composition
  • Aqueous ultraviolet radiation-curable overprint varnish composition

Examples

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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

The problem to be addressed by the present invention is to provide an aqueous ultraviolet radiation-curable overprint varnish composition that maintains a pleasantly soft velvet-like or suede-like texture on a base material such as a printed material. Provided is an aqueous ultraviolet radiation-curable overprint varnish composition which contains a urethane resin, an ultraviolet radiation-curable monomer that contains a water-soluble (meth)acrylate as an essential component, and water, and which is characterized in that the urethane resin:ultraviolet radiation-curable monomer weight ratio is 1:2 to 2:1, the coefficient of dynamic friction of a dried coated-surface is 0.1-0.7 after coating the aqueous ultraviolet radiation-curable overprint varnish composition, and if the measurement speed is increased from 2 mm / s to 20 mm / s, the percentage increase in the coefficient of dynamic friction is 10% or higher.

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] In the field of commercial printing, coating agents such as water-based varnish and UVCLEAR, which are called varnishes in the industry, have been applied to printed matter for the purpose of improving the appearance of printed matter and protecting the surface, mainly in packaging printing. 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 bonded to a film such...

Claims

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Application Information

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IPC IPC(8): C09D175/04B32B27/30B32B27/40C09D4/02
CPCC09D175/04C08F220/58C08F222/1006C08F283/006C09D4/06C08F222/103
Inventor 小林健作关野吉厚高桥雅人
Owner DAINIPPON INK & CHEM INC
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