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Waterproof printing process for paper presswork

A printed matter and paper-based technology, which is applied in the field of waterproof printing technology, can solve problems such as being susceptible to application restrictions, reducing printing efficiency, and poor waterproofness, so as to enhance mechanical properties, waterproof performance and antibacterial properties, enhance stability and adaptability, The effect of enhancing color uniformity

Active Publication Date: 2021-10-01
德化县鸿日印刷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the increase of ink viscosity will cause the phenomenon of paper sticking on the surface during printing, and the pollution of the ink roller will reduce the printing efficiency.
In addition, paper prints are extremely vulnerable to application limitations due to their poor water resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step 1: (1) Weigh 6g of 7-hydroxycoumarin, 22g of methyl methacrylate, 35g of styrene, 9g of hydroxyethyl methacrylate, 13g of glycidyl methacrylate, and 1.86g of ammonium persulfate, and set aside ; ultrasonically disperse sodium dodecylbenzenesulfonate and 1 / 3 potassium persulfate in deionized water; set stirring speed to 260rmp, temperature to 75°C, add dropwise 2 / 5 aqueous solution of methacrylate and 7- Hydroxycoumarin solution, react for 52 minutes; set the stirring speed to 580rpm, continue to add 3 / 5 of methacrylate solution, glycidyl methacrylate solution, hydroxyethyl methacrylate solution, styrene solution, mix and stir After 16 minutes, 2 / 3 aqueous solution of potassium persulfate is added dropwise, and the dropwise addition time is 40-45 minutes, and reacted for 6 hours; polymerized nanospheres are obtained. (2) Weigh 45g of polymerized nanospheres, 27g of water-based pigment, 13g of methacrylate, and 0.6g of potassium persulfate, and set aside; ultrasonica...

Embodiment 2

[0035] Step 1: (1) Weigh 8g of 7-hydroxycoumarin, 26g of methyl methacrylate, 38g of styrene, 10g of hydroxyethyl methacrylate, 14g of glycidyl methacrylate, and 2.2g of ammonium persulfate, and set aside ; ultrasonically disperse sodium dodecylbenzenesulfonate and 1 / 3 potassium persulfate in deionized water; set the stirring speed to 300rmp and the temperature to 78°C, add dropwise 2 / 5 of the methacrylate aqueous solution and 7- Hydroxycoumarin solution, react for 60 minutes; set the stirring speed to 600rpm, continue to add 3 / 5 methacrylate solution, glycidyl methacrylate solution, hydroxyethyl methacrylate solution, styrene solution, mix and stir In 20 minutes, 2 / 3 aqueous solution of potassium persulfate was added dropwise, and the dropwise addition time was 45 minutes, and reacted for 7 hours; polymerized nanospheres were obtained. (2) Weigh 43 g of polymerized nanospheres, 27 g of water-based pigments, 15 g of methacrylate, and 1 g of potassium persulfate, and set aside;...

Embodiment 3

[0041] Step 1: (1) Weigh 5g of 7-hydroxycoumarin, 20g of methyl methacrylate, 32g of styrene, 8g of hydroxyethyl methacrylate, 11g of glycidyl methacrylate, and 1.5g of ammonium persulfate, and set aside ; ultrasonically disperse sodium dodecylbenzenesulfonate and 1 / 3 potassium persulfate in deionized water; set the stirring speed to 200-300rmp, the temperature is 70°C, add 2 / 5 of the methacrylate aqueous solution and 7-hydroxycoumarin solution, react for 50 minutes; set the stirring speed to 400rpm, continue to add 3 / 5 of methacrylate solution, glycidyl methacrylate solution, hydroxyethyl methacrylate solution, styrene solution, Mix and stir for 15 minutes, add dropwise 2 / 3 aqueous solution of potassium persulfate for 40 minutes, and react for 5 hours; polymerized nanospheres are obtained. (2) Weigh 48g of polymerized nanospheres, 22g of water-based pigment, 12g of methacrylate, and 0.5g of potassium persulfate, and set aside; ultrasonically disperse the water-based pigment a...

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Abstract

The invention discloses a waterproof printing process of paper presswork. The waterproof printing process has the beneficial effects that (1) polymeric nanospheres are used as a medium to adsorb pigment through temperature and pH regulation and control, and the color uniformity of multi-layer shell-core dye is enhanced; (2) the multi-layer shell-core dye is dispersed in water to obtain low-viscosity water-based anti-forgery ink, so that the stability and adaptability of the water-based anti-forgery ink are enhanced without adding additional polymers, and the preparation of the high-quality paper presswork is enhanced; (3) lactic acid, hydroxyl on a paper surface and hydroxyl of N-trimethyl chitosan are crosslinked through an esterification reaction to form an enhanced network, the surface is dehydrated, and the mechanical property, the waterproof property and the antibacterial property of paper are enhanced; and (4) polymethacrylate molecules on the surface of the multi-layer shell-core dye are broken through electron beam irradiation, so that internal hydroxyethyl methylacrylate is exposed, and the firmness of the pigment and the paper is enhanced. The problem between the strength of the paper surface and the low-viscosity ink is solved through collaboration.

Description

technical field [0001] The invention relates to the technical field of printing, in particular to a waterproof printing process for paper printed matter. Background technique [0002] Printing is one of the four great inventions in ancient China, and paper printing is a historical subject with a long history. With the development of modern science and technology, the printing process is not only for books, he also designs express packaging and other printing fields. With the application in different fields, the printing process and printing inks have been diversified. [0003] At present, more environmentally friendly printing inks usually use polymers as binders to form inks mixed with water-based pigments, but the stability of the inks is not good, and due to humidity and temperature during printing, a large number of polymer particles produce uneven ink distribution and ink pollution. There are also studies on directly encapsulating the ink through copolymerization to i...

Claims

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Application Information

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IPC IPC(8): B41M5/00C09D11/50C09D11/037D21H23/50D21H25/06
CPCB41M5/00B41M5/0011C09D11/50C09D11/037D21H23/50D21H25/06
Inventor 石其明
Owner 德化县鸿日印刷有限公司
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