Two-color anti-counterfeiting carbonless CB (coated back)/CFB (coated front and back) paper and production process for same

A color and black technology, applied in the field of two-color anti-counterfeiting carbon-free CB/CFB paper and its production process, can solve the problems of low flexibility

Active Publication Date: 2012-06-13
GUANGDONG GUANHAO HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are some relatively mature anti-counterfeiting production processes in the field of carbonless copy paper processing, such as carbonless copy paper with anti-counterfeit fibers, carbonless copy paper with black and white watermarks, and carbonless copy paper with security lines, etc. Most of these carbonless copy papers are In the papermaking process of base paper, through special processes, such as adding special fiber materials, using concave-convex watermark rollers to shape the paper, or using the method of embedding anti-counterfeiting security threads to achieve its anti-counterfeiting performance, the processing of this kind of paper is complicated and proprietary. Strong, anti-counterfeiting function is intuitive and visible, once mass-produced, except for a few proprietary tickets, it cannot be used on other tickets, and the flexibility is very small

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Formula and preparation method of red carbon-free microcapsules

[0039] Dissolve 3.8kg of red colorless dye 3,3-bis(1-butyl-2-indol-3-yl)phthalide in 72.8kg of solvent oil diarylethane, add emulsifier styrene maleate An aqueous solution of 16.6 kg of acid anhydride copolymer, adjust the solid content of the aqueous solution to about 30%, and after the pH value is 3.8 to 4.3, carry out high-speed emulsification until the particle size of the microcapsules is 3 to 8 microns, add 26.8 kg of melamine formaldehyde resin, and heat up to 60°C, keep warm for 3 hours, then cool down to room temperature and store for later use.

[0040] (2) Formula and preparation method of green dye capsules

[0041] Dissolve 1.1kg of green dye 5(6)-fluorescein isothiocyanate in 8.2kg of solvent oil diarylethane, add an aqueous solution of 2.2kg of emulsifier styrene maleic anhydride copolymer, and adjust the solid content of the aqueous solution to about 30% After the pH value is 3.8-4.3...

Embodiment 2

[0047] (1) Formulation and preparation method of blue carbon-free microcapsules

[0048] Dissolve 2.4kg of the blue colorless dye crystal violet lactone (CVL) in 58.5kg of solvent oil diisopropylnaphthalene, add an aqueous solution of 14.6kg of emulsifier styrene maleic anhydride copolymer, and adjust the solid content of the aqueous solution to about 30%. , After the pH value is 3.8-4.3, high-speed emulsification is carried out until the particle size of the microcapsules is 3-8 microns, 24.4 kg of melamine formaldehyde resin is added, and the temperature is raised to 60 ° C, kept for 3 hours and then lowered to room temperature for storage.

[0049] (2) Pink dye capsule formula and preparation method

[0050] Dissolve 1.7kg of pink dye 3-amino-7-dimethylamino-2-methylphenazine hydrochloride in solvent oil diarylethane 10.3kg, add emulsifier styrene maleic anhydride copolymer 3kg Aqueous solution, after adjusting the solid content of the aqueous solution to about 30%, and th...

Embodiment 3

[0056] (1) Formulation and preparation method of black carbon-free microcapsules

[0057] Dissolve 4kg of black leuco dye 2-(2′,4′-dimethylanilino-3-methyl-6-diethylaminofluorane (B-15) in solvent oil diarylethane 76.3kg , add emulsifier styrene maleic anhydride copolymer 16.6kg aqueous solution, adjust the solid content of the aqueous solution to about 30% and the pH value at 3.8-4.3, then carry out high-speed emulsification until the particle size of the microcapsules is 3-8 microns, then add melamine 33.2kg of formaldehyde resin was heated up to 60°C, kept at room temperature for 3 hours and stored for later use.

[0058] (2) Formula and preparation method of yellow dye paint

[0059] Yellow dye 1,1'-[(6-phenyl-1,3,5-triazine-2,4-diimino]bisanthraquinone 6.4kg, polyvinyl alcohol 1.3kg, methyl benzoate 1.6kg, Mix under high-speed stirring, grind to a suspension of 2 to 4 microns in a horizontal grinder, then add 2.1kg of gelatin, 0.9kg of casein, and 1.3kg of gum arabic, s...

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PUM

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Abstract

Disclosed are two-color anti-counterfeiting carbonless CB (coated back) / CFB (coated front and back) paper and production process for the same. Second developed dye is emulsified and packaged by the capsulation technique, or further processed by the grinding technique, the processed second developed dye is added into CB coatings in different colors, and the coatings are coated to the back of raw paper or CF (coated front) paper to produce two-color carbonless CB / CFB paper. The original developed color of the carbonless paper can be retained on the CF side when the carbonless CB / CFB paper is gathered and printed with CFB / CF paper sheets. When the paper sheets are recognized by friction operations such as scribing and the like on the CB side, a second developed color line can appear clearly on the CB side. The two developed marks are mutually independent of each other about developing conditions, so that the new anti-counterfeiting function of carbonless copy paper is realized.

Description

technical field [0001] The invention belongs to the technical field of coating processing of carbonless copy paper, in particular to a double-color anti-counterfeiting carbonless CB / CFB paper and a production process thereof. Background technique [0002] Carbon-free copy paper, as multi-part copy paper, has the advantages of convenient use, clean hands, and easy processing. It is widely used in tickets and various forms and documents in finance, taxation, customs, banking, catering, insurance and other industries. aspect. [0003] Carbonless copy paper was once used as a kind of anti-counterfeiting ticket paper, which effectively prevented the counterfeiting and imitation of valid tickets. The technical threshold of carbon paper has already been broken through, and counterfeiting activities are on the rise again. The proliferation of counterfeit bills will seriously disrupt the normal economic order of our country and pose a serious threat to taxation management and econom...

Claims

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Application Information

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IPC IPC(8): D21H21/28D21H21/08D21H21/38D21H19/14
Inventor 黄阳旭李臻奎明红唐宏磊陈浩
Owner GUANGDONG GUANHAO HIGH TECH
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