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Hydrophobic, scratch-resistant and light-resistant UV-LED curing oil polish for paper packaging printed matters

A UV-LED, printed matter technology, used in coatings, epoxy resin coatings, polyester coatings, etc., can solve the problems of low curing degree, weak absorption, and low photoinitiator initiation efficiency.

Active Publication Date: 2018-08-07
广西真龙彩印包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most photoinitiators on the market have absorption wavelengths less than 365nm. Since UV-LED curing is a new technology, there is currently a serious lack of photoinitiators with strong absorption in the 365-420 wavelength range. There are only a few photoinitiators for traditional UV curing. The photoinitiator has weak absorption at 365-420nm, and the initiation efficiency of the photoinitiator is not high
Due to the above two reasons, the UV-LED curing rate of the varnish is slow and the curing degree is low, and the UV-LED curing rate of the varnish is much lower than the printing rate

Method used

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  • Hydrophobic, scratch-resistant and light-resistant UV-LED curing oil polish for paper packaging printed matters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The formula of UV-LED curable varnish is expressed as (Wt%) with mass percentage:

[0048] In the first step, the synthesized nano-Al with D50 diameter of 40nm 2 o 3 A thin layer of transparent SiOx (x=0.3-2) is formed by plasma polymerization.

[0049] In a closed glass container, the powder moves under the action of mechanical stirring, and a plasma discharge system is formed in the closed space with a power supply with a frequency of 13.56MHz and a maximum power of 1000W. When the vacuum reaches about 20Pa, Ar Hexamethyldisiloxane, the reactive monomer of the carrier gas, forms transparent SiO with a thickness of several angstroms on the surface of the powder x (x=0.3-2) film to improve the dispersion performance of the powder in the active monomer.

[0050] In the second step, the surface-modified nano-Al 2 o 3 Uniformly dispersed in tripropylene glycol diacrylate (TPGDA) reactive monomer. Under the condition of not adding wetting and dispersing agent, add the...

Embodiment 2

[0064] The formula of UV-LED curable varnish is expressed as (Wt%) with mass percentage:

[0065] In the first step, the synthesized nano-ZrO with D50 diameter of 40nm 2 Forming a layer of transparent SiO using plasma polymerization x TLC.

[0066] In a closed glass container, the powder moves under the action of mechanical stirring, and a plasma discharge system is formed in the closed space with a power supply with a frequency of 13.56MHz and a maximum power of 1000W. When the vacuum reaches about 20Pa, Ar The reactive monomer dimethyldisiloxane, which is the carrier gas, forms transparent SiO with a thickness of about several angstroms on the surface of the powder x (x 0.3-2) film to improve the dispersion performance of powder in active monomer.

[0067] In the second step, the surface-modified nano-ZrO 2 Uniformly dispersed in trifunctional trimethylolpropane triacrylate (TMPTA) reactive monomer. Under the condition of not adding wetting and dispersing agent, add the...

Embodiment 3

[0081] In the first step, the synthesized nano-SiO with D50 diameter of 20nm 2 Forming a layer of transparent SiO using plasma polymerization x TLC.

[0082] In a closed glass container, the powder moves under the action of mechanical stirring, and a plasma discharge system is formed in the closed space with a power supply with a frequency of 13.56MHz and a maximum power of 1000W. When the vacuum reaches about 20Pa, Ar The reactive monomer tetramethyldisiloxane, which is the carrier gas, forms transparent SiO with a thickness of about several angstroms on the surface of the powder x (x 0.3-2) film to improve the dispersion performance of powder in active monomer.

[0083] In the second step, the surface-modified nano-SiO 2 Uniformly dispersed in N-acryloylmorpholine (acmo) active monomer. Under the condition of not adding wetting and dispersing agent, add the powder to the active monomer, disperse at high speed, and then sand with a sand mill. The sand mill uses zirconia b...

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Abstract

The invention discloses hydrophobic, scratch-resistant and light-resistant UV-LED curing oil polish for paper packaging printed matters. 1-10% by mass of Al2O3 or ZrO2 or SiO2 which has powder particle diameters D50 of 10-40nm and has dispersion properties improved by plasma polymerization is added into oil polish. The nanometer powder can absorb the impact energy and slowly release the energy sothat the surface of the cured film has elasticity, the hardness is not influenced and the scratch resistance and wear resistance of the surface of the cured film are observably improved. Through synergism of the inorganic nano-powder and the leveling agent, a random island-like distributed rough surface is formed on the cured film and the surface hydrophobic effects are obtained. Through use of polyester acrylate with low viscosity and nine functional groups, a highly reactive monomer, a photoinitiator and reactive amine, the reactivity of the oil polish is improved and the oil polish can be fast cured under weak LED illuminance. The cured oil polish has various performances meeting the various performance requirements on cigarette paper packaging of oil polish.

Description

technical field [0001] The application relates to a hydrophobic, scratch-resistant and wear-resistant UV-LED curing varnish for paper packaging printed matter, which belongs to the field of printing materials and technology. Background technique [0002] After the paper packaging is printed, it is often necessary to coat a layer of transparent varnish on the surface of the printing ink layer. After coating, it is cured to form a transparent coating to protect the printing ink layer, improve the water resistance and abrasion resistance of the printed matter; and improve the packaging quality. The glossiness of the surface of the printed matter may form a special appearance effect. After the varnish for paper packaging is cured, it is required that the varnish has high transparency, odorless, strong gloss, rapid drying, good chemical corrosion resistance, good light resistance, and the cured film must have certain elasticity and flexibility, and strong adhesion to ink , good ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/06C09D163/10C09D7/47C09D7/61
CPCC09D163/10C09D167/06C08L2205/035C08K2201/011C08L63/10C08L51/08C08K9/02C08K2003/2227C08K2003/2244C08K3/36C08L67/06
Inventor 毛科林黄江伟肖勇成竹良蒙瑞强何迪罗世永许文才李晓丽
Owner 广西真龙彩印包装有限公司
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