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Stress luminescence type anti-forgery ink, preparation method and use method

A stress luminescence, anti-counterfeiting ink technology, applied in the field of ink, can solve the problems of poor anti-counterfeiting strength, low safety factor, unstable product quality, etc., and achieve the effect of good printing suitability, high production efficiency, and high anti-counterfeiting identification effect.

Pending Publication Date: 2021-06-04
SHENZHEN JINJIA GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, this application discloses a stress-luminescent anti-counterfeiting ink, a preparation method and a use method, which can solve the problems of poor anti-counterfeiting strength, low safety factor and unstable product quality in the prior art.

Method used

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  • Stress luminescence type anti-forgery ink, preparation method and use method
  • Stress luminescence type anti-forgery ink, preparation method and use method
  • Stress luminescence type anti-forgery ink, preparation method and use method

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preparation example Construction

[0037] In order to solve the above technical problems, this application also discloses a preparation method of stress-luminescent anti-counterfeiting ink, please refer to figure 1 , wherein, the method is used to prepare the above-mentioned stress-luminescent anti-counterfeiting ink, and the method comprises the steps of:

[0038] S10, providing water-based polyurethane emulsion.

[0039] In the step S10, the polyisocyanate is mixed with the oligomeric polyol, stirred with a high-speed disperser at 400-600r / min, heated to 70-90°C for 1.5-2.5 hours, cooled to 60°C, and then added with hydrophilic chain extension The agent is continuously reacted for 40-80 minutes to obtain a water-based polyurethane prepolymer, and the temperature is continued to drop to 25-35°C to add a water-based solvent, and the stirring is continued to obtain the water-based polyurethane resin emulsion.

[0040] S20. Add heat-sensitive color-changing pigments, stress-luminescent materials and fillers to t...

Embodiment 1

[0054] Mix polyisocyanate with oligomeric polyol, stir with a high-speed disperser at 400r / min, heat to 90°C for 1.5 hours, cool down to 60°C and then add a hydrophilic chain extender to continue the reaction for 80 minutes to obtain a waterborne polyurethane prepolymer, continue Lower the temperature to 25° C., add an aqueous solvent, and continue stirring to obtain the aqueous polyurethane resin emulsion 1.

[0055] Add heat-sensitive color-changing pigments, stress-luminescent materials and fillers to the water-based polyurethane resin emulsion 1, and stir for 20 minutes using a high-speed disperser at a speed of 1400 r / min.

[0056] After that, continue to add additives, adjust the pH value to 9.5, and stir at 600r / min for 80 minutes. During the process, continue to add water-based solvent to adjust its viscosity to 30s (Zion 4# cup, 25°C) to obtain the stress Luminous anti-counterfeiting ink1.

[0057] On the second surface of the printing carrier, the position correspon...

Embodiment 2

[0059] Preparation of stress-luminescent anti-counterfeiting ink:

[0060] Mix polyisocyanate with oligomeric polyol, stir with a high-speed disperser at 500r / min, heat to 80°C for 2 hours, cool down to 60°C and then add a hydrophilic chain extender to continue the reaction for 60 minutes to obtain a waterborne polyurethane prepolymer, continue Lower the temperature to 30° C., add an aqueous solvent, and continue stirring to obtain the aqueous polyurethane resin emulsion 2.

[0061] Add heat-sensitive color-changing pigments, stress-luminescent materials and fillers to the water-based polyurethane resin emulsion 2, and stir for 30 minutes using a high-speed disperser at a speed of 1200 r / min.

[0062] After that, continue to add additives, adjust the pH value to 9, and stir at 750r / min for 60 minutes. During the process, continue to add aqueous solvent, adjust its viscosity to 30s (Zion 4# cup, 25°C), and obtain the stress Luminous anti-counterfeiting ink2.

[0063] On the s...

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Abstract

The invention discloses a stress luminescence type anti-forgery ink, a preparation method and a use method. The stress luminescence type anti-forgery ink comprises: a stress luminescence material; and a diluent; the diluent is prepared from: waterborne polyurethane resin; a hydrophilic chain extender; an aqueous solvent; a thermochromic pigment; an auxiliary agent; and filler. The stress luminescence type anti-forgery ink can solve the problems that stress luminescence type anti-forgery ink in the prior art is poor in anti-forgery strength, low in safety coefficient and unstable in product quality.

Description

technical field [0001] The invention relates to the technical field of inks, in particular to a stress-luminescent anti-counterfeiting ink, a preparation method and a use method. Background technique [0002] Tax bills, securities, lottery tickets and scratch-off products are common printed materials in daily life, which play an important role in national taxation, welfare and economic development. In printed matters such as tax receipts, in order to hide information such as redemption numbers or QR codes, opaque and easy-to-scratch silver inks are usually printed in encrypted areas. The hidden information is covered by this ink. When the receipts are scratched by consumers After opening, the hidden information will be displayed. In recent years, with the rapid development of the overall level of domestic printing technology, some criminals have begun to try to forge such high-value printed materials in order to obtain illegal benefits. Therefore, improving the security of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/50C09D11/102C09D11/037B41M3/14
CPCC09D11/50C09D11/102C09D11/037B41M3/14
Inventor 郭鹏飞史太川吕伟
Owner SHENZHEN JINJIA GRP
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