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Treatment method of gravure printing process waste liquid

A technology of gravure printing process and treatment method, which is applied in the field of printing and can solve problems that do not involve waste liquid treatment methods

Inactive Publication Date: 2018-12-11
北京万垟防伪技术有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, in the prior art, there is no treatment method related to this gravure wiring printing process waste liquid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Example 1: Gravure printing process waste liquid obtained by using water-based gravure wiring printing ink (wiping solution is deionized water)

[0074] Take 180g of gravure printing process waste liquid and place it in an evaporating dish. The evaporating dish weighs 76g, and the total weight is 256g. ;Medium and low heat for 3 minutes, take out and weigh 235.7g (-12.3g water); heat for 3 minutes on medium heat, take out and weigh 215.7g (-20g); heat for 3 minutes on high heat, take out and weigh 177.7g (-38g) . The gross weight of the raffinate was 177.7g, the net weight was 101.7g, and it was a black viscous mixture.

[0075] The solvent evaporated by the microwave oven is introduced into the condenser through the exhaust fan. The net weight of the recovered solvent is 76g, and the loss of solvent is 2.3g.

[0076] The measured raffinate viscosity is 1.3Pa.s / 40℃

Embodiment 2

[0077] Embodiment 2: water-based engraving gravure printing process waste liquid (wiping solution is deionized water)

[0078] Waste liquid configuration: Take 300 grams of water-based engraving gravure ink (100 grams each of yellow, red and blue inks), and 1200 grams of deionized water, mix well and set aside.

[0079] Take 1450g of the prepared water-based engraving gravure printing process waste liquid, put it in a plastic box, heat the plastic box in a microwave oven, heat it on low heat for 20 minutes, heat it on medium-low heat for 70 minutes, heat it on medium heat for 70 minutes, and heat it on medium-high heat 30 minutes. The residual liquid was taken out and weighed 386.6g, the tare weight of the plastic box was 96g, and the net weight was 290.6g. The residual liquid was a black viscous mixture.

[0080] The solvent evaporated by the microwave oven is introduced into the condenser through the exhaust fan. The net weight of the recovered solvent is 1145g, and the los...

Embodiment 3

[0082] Example 3: Waste liquid of engraving gravure printing process, using non-aqueous engraving gravure ink, wiping solution is a mixture of triethylene glycol butyl ether and high boiling point kerosene (boiling range 250-290°C), and the configuration ratio is 1:1.

[0083] Waste liquid configuration: Take 300 grams of non-aqueous engraving gravure ink (100 grams each of yellow, red and blue inks), 600 grams of triethylene glycol butyl ether, and 600 grams of high boiling point kerosene, mix well and set aside.

[0084] Device: a glass four-necked bottle, one of which is connected to a condenser, and the tail of the condenser is connected to a vacuum device. One port is fitted with a thermometer. One port is fitted with a stirring device. One port is used for feeding.

[0085] Add 1450 g of the waste liquid prepared above into a 2000 ml four-necked bottle, start stirring, vacuumize, and heat up under negative pressure. When the pressure reaches 10mmHg and the temperature...

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Abstract

The invention relates to a treatment method of gravure printing process waste liquid. The gravure printing process waste liquid is obtained by using a solvent capable of dissolving or uniformly dispersing gravure ink as wiping liquid; part of the solvent is removed from the gravure printing process waste liquid, so that the viscosity of a resulting raffinate is 70% to 140% of the viscosity of thegravure ink. The treatment method of the gravure printing process waste liquid disclosed by the invention has the advantages of simpleness, quickness, low cost, small land occupation and no three-waste discharge.

Description

technical field [0001] The invention relates to the technical field of printing, in particular to a treatment method for waste liquid in gravure printing process. Background technique [0002] Gravure printing equipment is divided into engraving gravure printing equipment and photogravure printing equipment. Correspondingly, the gravure printing process is divided into engraving gravure printing process and photo gravure printing process, which are quite different. [0003] The imprint (ink) of the printed matter obtained by the engraving gravure printing machine and printing technology is protruding from the surface of the paper, and it has obvious unevenness when touched by hand; the ink color of the printed matter has distinct layers and a strong three-dimensional effect. [0004] The imprint (ink) of the printed matter obtained by the gravure printing machine and printing technology is flat, and there is no uneven feeling when touching it by hand, and there is no clear ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/00B01D5/00C09D9/00
CPCB01D3/00B01D5/00C09D9/005
Inventor 樊鹏贾东光李尧樊官保
Owner 北京万垟防伪技术有限责任公司
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