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Water spray-resistant stamped UV-LED-curing oil polish for cigarette paper package printed matters

A UV-LED, printed matter technology, applied in coatings, polyester coatings, polyurea/polyurethane coatings, etc., can solve the problems of low photoinitiator initiation efficiency, low curing degree, weak absorption, etc., to improve the waterproof fog. performance, the effect of improving reactivity

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The formula of UV-LED curing varnish, expressed as mass percentage (Wt%):

[0044] Prepolymer: difunctional bisphenol A epoxy acrylate 15, nine functional polyester acrylate 25, hydrophobic aliphatic urethane acrylate 8;

[0045] Active monomers: trifunctional trimethylolpropane triacrylate (TMPTA) 5; difunctional 1,6-hexanediol diacrylate (HDDA) 31;

[0046] Active amine: acrylated active amine 8;

[0047] Leveling agent: polyester-modified polydimethylsiloxane 0.1 grafted with acrylic functional groups;

[0048] Wax powder: PTFE / polyethylene micronized mixed wax powder 1;

[0049] Photoinitiator: 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO) 4%, camphorquinone 0.5%, N-[2-(dimethylamino)ethyl ester]-1, 8-Naphthalimide 1%, 4-Ethylpropylthioxanthone 1.5%.

[0050] Accurately weigh each component according to the designed formula, add it to a stainless steel reaction kettle at room temperature, stir for 12 hours, and rotate at 800 r / min to completely dissolve t...

Embodiment 2

[0058] The formula of UV-LED curing varnish, expressed as mass percentage (Wt%):

[0059] Prepolymer: Difunctional bisphenol A epoxy acrylate 20, nine functional polyester acrylate 20, hydrophobic aliphatic urethane acrylate 7;

[0060] Active monomers: trifunctional trimethylolpropane triacrylate (TMPTA) 10; difunctional 1,6-hexanediol diacrylate (HDDA) 31;

[0061] Active amine: acrylated active amine 6;

[0062] Leveling agent: polyester-modified polydimethylsiloxane 0.2 grafted with acrylic functional groups;

[0063] Wax powder: PTFE / polyethylene micronized mixed wax powder 0.5;

[0064] Photoinitiator: 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO)2, camphorquinone 2,N-[2-(dimethylamino)ethyl ester]-1,8- Naphthalimide 1.0, bis(2,4,6-trimethylbenzoyl)phosphine oxide 0.5.

[0065] Accurately weigh each component according to the designed formula, add it to a stainless steel reaction kettle at room temperature, stir for 12 hours, and rotate at 900 r / min to completel...

Embodiment 3

[0073] The formula of UV-LED curing varnish, expressed as mass percentage (Wt%):

[0074] Prepolymer: Difunctional bisphenol A epoxy acrylate 10, nine functional polyester acrylate 24, hydrophobic aliphatic urethane acrylate 10;

[0075] Active monomers: trifunctional trimethylolpropane triacrylate (TMPTA) 8; difunctional 1,6-hexanediol diacrylate (HDDA) 37;

[0076] Active amine: acrylated active amine 4;

[0077] Leveling agent: polyester-modified polydimethylsiloxane 0.2 grafted with acrylic functional groups;

[0078] Wax powder: PTFE / polyethylene micronized mixed wax powder 0.5;

[0079] Photoinitiator: 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO)3, camphorquinone 1,N-[2-(dimethylamino)ethyl ester]-1,8- Naphthalimide 2.5.

[0080] Accurately weigh each component according to the designed formula, add it to a stainless steel reactor at room temperature, stir for 12 hours, and rotate at 1000 r / min, so that the solid initiator and wax powder are completely dissol...

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Abstract

The invention discloses water spray-resistant stamped UV-LED-curing oil polish. The oil polish comprises, by weight, 10-40 parts of bisphenol A epoxy acrylate, 10-30 parts of nine functional polyesteracrylate, 5-15 parts of aliphatic polyurethane acrylate, 5-15 parts of TMPTA, 10-50 parts of HDDA, 3-10 parts of reactive amine, 0.1-0.5 parts of a leveling agent, 0.5-2 parts of mixed wax powder, 1-6 parts of a photoinitiator TPO, 0.5-5 parts of camphorquinone, 0.5-4 parts of N-[2-(dimethylamino)ethyl ester]-1, 8-naphthalimide, 0-5 parts of 819, and 0-5 parts of 4(2)-ITX. The viscosity is testedby a Zahn cup 4, and the surface tension is 20 to 30 Dynes / cm in 60 to 120 seconds. After coating, the oil polish can be rapidly cured under LED illumination conditions of center wavelength of 365-405 nm, illuminance of 0.5-1.5 W / cm<2> and a distance of 5 mm. The cured film has a surface water contact angle of 80-120 degrees, a dynamic friction coefficient of 0.05-0.2, a static friction coefficient of 0.1-0.3 and good water spray-resistant performances and stamping performances.

Description

technical field [0001] The application relates to a waterproof, fog-proof, bronzing, UV-LED curing varnish for cigarette paper packaging printed matter, belonging to the field of printing materials and technologies. 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. The gloss of the surface of the printed matter or the formation of special appearance effects. After curing, the varnish for cigarette paper packaging requires high transparency, odorless, strong gloss, rapid drying, good chemical corrosion resistance, good light resistance, and the cured film must have certain elasticity and flexibility. Strong, good leveling, smooth film surface, extensive post-press processing adaptability (can be bronzing) and excellent wear resistance. The abrasion resistance requirement must meet the requirements of being difficult to be scratched during the printing pro...

Claims

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Application Information

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IPC IPC(8): C09D167/06C09D163/10C09D175/14C09D7/63C09D7/47
CPCC08L2205/035C09D163/10C09D167/06C09D175/14C08L63/10C08L75/14C08L51/08C08L27/18C08L23/06C08L67/06
Inventor 黄江伟毛科林肖勇成竹良蒙瑞强何迪李晓丽许文才罗世永
Owner 广西真龙彩印包装有限公司
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