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Environment-friendly UV gloss oil for food packaging and printing

A technology for food packaging and environmental protection, applied in epoxy resin coatings, coatings, polyurea/polyurethane coatings, etc., can solve problems such as poor curing effect, singleness, and migration of photoinitiators, so as to deepen the photocuring effect and improve Good printing performance and gloss

Inactive Publication Date: 2018-02-02
DONGGUAN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN105368271A discloses a UV varnish for LED curing light source, the UV varnish is composed of epoxy acrylate, hexanediol acrylate, tripropylene glycol dipropylene ester, trimethylolpropane triacrylate, photoinitiator , leveling agent and defoamer, the UV varnish for LED curing light source has moderate viscosity, good wear resistance and strong adhesion, effectively solving the technical problem that LED curing light source is difficult to cure traditional UV varnish, but The traditional single photoinitiator scheme is still used, and there is photoinitiator migration phenomenon, the curing effect is not good, and the UV varnish formula is obtained from experience and has not been combined with actual application analysis to make formula optimization

Method used

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  • Environment-friendly UV gloss oil for food packaging and printing
  • Environment-friendly UV gloss oil for food packaging and printing
  • Environment-friendly UV gloss oil for food packaging and printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024]Environmentally friendly UV varnish for food packaging and printing, including the following components by weight: 30% prepolymer, 20% active monomer, 10% photoinitiator, 1% defoamer, 1% leveling agent, thickener 8%, 25% solvent and 5% slow-drying water; wherein, the prepolymer is polyurethane acrylic resin and epoxy ester acrylic resin with a mass ratio of 3:2, and the active monomer is neopentyl acrylic resin with a mass ratio of 1:1 Alcohol diacrylate and trimethylolpropane triacrylate, the photoinitiator is bisbenzoylphenyl phosphine oxide and triaryl silicone ether with a mass ratio of 3:2, the defoamer is emulsified silicone oil, leveling agent It is an acrylic resin, the thickener is sodium carboxymethyl cellulose, the solvent is ethanol, and the slow-drying water is 783 slow-drying water.

Embodiment 2

[0025] Embodiment 2: the preparation method of the environment-friendly UV varnish for food packaging and printing

[0026] ①Preparation of prepolymers, active monomers, photoinitiators, defoamers, leveling agents, thickeners, solvents and slow-drying water for later use; polyurethane acrylate and epoxy ester acrylic resin prepolymers for later use, among which photo The initiator is a mixture of a free radical photoinitiator and a cationic photoinitiator;

[0027] ② Determine the formula of UV varnish through the design method of response surface experiment;

[0028] ③According to the UV varnish formula in step ②, weigh the prepolymer, active monomer, photoinitiator, defoamer, leveling agent, thickener, solvent and slow-drying water to fully mix, and stir at high speed , the stirring speed is 500-2000 rev / min, and the temperature is controlled below 60°C to fully dissolve completely until transparent to obtain environmentally friendly UV varnish for food packaging and printi...

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Abstract

The invention relates to the field of UV gloss oil, in particular to environment-friendly UV gloss oil for food packaging and printing. The environment-friendly UV gloss oil comprises, by weight, 8-45% of prepolymer, 8-65% of active monomer, 1-15% photoinitiator, 0.05-2% of defoamer, 0.05-2% of flatting agent, 5-10% of thickener, 5-35% of solvent and 5-10% of isophorone. Free radical photoinitiator and cationic photoinitiator are added at the same time; through oxygen inhibition resisting and post-curing effects of cations, photocuring effect is enhanced, migration of the photoinitiators is reduced, and the environment-friendly UV gloss oil has the advantages of high solution resistance, good glossiness, high hardness and environment friendliness.

Description

technical field [0001] The invention relates to the field of UV varnish, in particular to an environment-friendly UV varnish for food packaging and printing. Background technique [0002] UV varnish is a kind of transparent coating, also known as UV varnish. Its function is that after spraying or rolling on the surface of the substrate, it is irradiated by UV lamps to convert it from liquid to solid, and then achieve surface hardening. It is scratch-resistant and scratch-resistant, and the surface looks bright, beautiful and round. . With the development of the printing and packaging industry, great changes have taken place in the field of coatings. Among them, UV coatings have the advantages of fast curing speed, energy saving, room temperature curing, superior performance, and environmental protection. The film surface is strong and heat-resistant, and the refraction effect is good, which makes the substrate have a strong sense of subject. It has been widely used in chem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D163/10C09D7/65C09D7/47
CPCC09D175/14C08L2205/035C08L63/10C08L83/04C08L33/00C08L1/286
Inventor 李小东邹洋王旭红李娜张彦粉龚修端李伟
Owner DONGGUAN POLYTECHNIC
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