CN111055603B - Packaging box printing process for preventing excessive emulsification of residual ink and formation of residues - Google Patents
Packaging box printing process for preventing excessive emulsification of residual ink and formation of residues Download PDFInfo
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- CN111055603B CN111055603B CN201911417571.4A CN201911417571A CN111055603B CN 111055603 B CN111055603 B CN 111055603B CN 201911417571 A CN201911417571 A CN 201911417571A CN 111055603 B CN111055603 B CN 111055603B
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- residual ink
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention discloses a packaging box printing process for preventing excessive emulsification of residual ink and residue formation, which relates to the technical field of printing processes and comprises the following process steps: (1) regeneration of residual ink; (2) heating of the plate cylinder; (3) printing the packaging box; (4) and drying the ink layer. The method has the advantages that reasonable utilization of the residual ink is rapidly realized through regeneration of the residual ink, and the problems of economic loss and environmental pollution caused by waste of the residual ink are avoided; the emulsification of the residual ink is weakened by heating the printing plate cylinder, and the excessive emulsification of the residual ink and the formation of residues are further prevented by the matching use of the regenerated residual ink, so that the printing quality of pictures and texts on the packaging box is ensured.
Description
The technical field is as follows:
the invention relates to the technical field of printing processes, in particular to a packaging box printing process for preventing residual ink from being excessively emulsified and forming residues.
Background art:
in the printing process, slight emulsification of the ink is necessary for the offset printing to proceed smoothly, but excessive emulsification may affect the printing quality. On the premise of preventing the surface of a printing plate from being dirty, the emulsification degree of the ink must be reduced as much as possible, because excessive emulsification can cause the transparency of the ink to be reduced, and particularly for color printing, subtractive color mixing of three primary color dots can be influenced, so that the color cannot be correctly restored.
Ink residue is inevitable, and often contains large amounts of ink skin and particulate residue and part of fountain solution, and is often accompanied by severe ink emulsification, and these residual inks are thrown away and used less well than the new ones. Most manufacturers have to discard residual ink in order to ensure the printing quality, reduce the defective rate and avoid increasing the process cost, thereby causing great pollution to the environment.
The invention starts from the printing process of the packaging box, prevents the phenomena of excessive emulsification and residue formation when the residual ink is used, thereby packaging and printing quality and avoiding the problems of resource waste and environmental pollution caused by the waste of the residual ink.
The invention content is as follows:
the technical problem to be solved by the invention is to provide a packaging box printing process for preventing the excessive emulsification of residual ink and the formation of residues, so that the reasonable utilization of the residual ink is realized, and the printing quality of the packaging box can be ensured.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a package printing process for preventing excessive emulsification of residual ink and residue formation, comprising the process steps of:
(1) regeneration of residual ink: adding an anti-emulsifier into the residual ink, and fully mixing;
(2) heating of the plate cylinder: heating the plate cylinder by hot air;
(3) printing the packaging box: continuously supplying ink to the printing plate cylinder by using the regenerated residual ink, and printing pictures and texts on the packaging box through the printing plate cylinder;
(4) and (3) drying the ink layer: and drying the ink layer on the packaging box by utilizing hot air.
The dosage of the anti-emulsifier is 0.1-2% of the mass of the residual ink.
The anti-emulsifier is ethylene oxide propylene oxide block copolymer.
The temperature of the heated hot air is 40-55 ℃.
The temperature of the dried hot air is 50-65 ℃.
Although the use of an ethylene oxide-propylene oxide block copolymer as a demulsifier can reduce the emulsion value of an ink to some extent, the demulsifier is only partially adsorbed on the surface of a pigment and is mostly in a free state in the ink, and therefore, the effect of reducing the emulsion value of an ink is limited. In order to solve the problem, the invention adopts two technical schemes, one is to add the attachment auxiliary agent together with the anti-emulsifier, and the other is to self-prepare a novel anti-emulsifier.
The technical problem to be solved by the invention can also be realized by adopting the following technical scheme:
a package printing process for preventing excessive emulsification of residual ink and residue formation, comprising the process steps of:
(1) regeneration of residual ink: adding an anti-emulsifier and an adhesion auxiliary agent into the residual ink, and fully mixing;
(2) heating of the plate cylinder: heating the plate cylinder by hot air;
(3) printing the packaging box: continuously supplying ink to the printing plate cylinder by using the regenerated residual ink, and printing pictures and texts on the packaging box through the printing plate cylinder;
(4) and (3) drying the ink layer: and drying the ink layer on the packaging box by utilizing hot air.
The dosage of the anti-emulsifier is 0.1-2% of the mass of the residual ink, and the dosage of the adhesion auxiliary agent is 0.1-2% of the mass of the residual ink.
The anti-emulsifier is ethylene oxide propylene oxide block copolymer.
The attachment auxiliary agent is glucolactone.
The glucolactone is usually applied to food processing and used as a coagulator, a stabilizer, an acidulant, an antistaling agent and a preservative, and the glucolactone is used as an attachment auxiliary agent in the invention and has the function of promoting the firm attachment of the demulsifier on the pigment, thereby strengthening the demulsification effect of the demulsifier and avoiding the influence on the surface tension and the printability of the ink caused by simply increasing the dosage of the demulsifier.
The temperature of the heated hot air is 40-55 ℃.
The temperature of the dried hot air is 50-65 ℃.
The technical problem to be solved by the invention can also be realized by adopting the following technical scheme:
a package printing process for preventing excessive emulsification of residual ink and residue formation, comprising the process steps of:
(1) regeneration of residual ink: adding an anti-emulsifier into the residual ink, and fully mixing;
(2) heating of the plate cylinder: heating the plate cylinder by hot air;
(3) printing the packaging box: continuously supplying ink to the printing plate cylinder by using the regenerated residual ink, and printing pictures and texts on the packaging box through the printing plate cylinder;
(4) and (3) drying the ink layer: and drying the ink layer on the packaging box by utilizing hot air.
The dosage of the anti-emulsifier is 0.1-2% of the mass of the residual ink.
The anti-emulsifier is a cyclopentylamine malate condensation product, and the preparation method comprises the following steps: adding DL-malic acid, cyclopentylamine and a condensing agent into dichloromethane, heating to 70-80 ℃ after complete dissolution, carrying out heat preservation reaction, extracting a reaction solution by using a saturated sodium bicarbonate solution after the reaction is finished, taking organic phase, carrying out vacuum distillation to recover dichloromethane, and drying a concentrated remainder to obtain a cyclopentylamine malate condensation compound.
The mol ratio of the DL-malic acid to the cyclopentylamine to the condensing agent is 1:1: 1.05-1.1.
The condensing agent is EDC, HCL and HOBt.
The temperature of the heated hot air is 40-55 ℃.
The temperature of the dried hot air is 50-65 ℃.
DL-malic acid and cyclopentylamine are used for preparing a novel anti-emulsifying agent through an amide condensation reaction, and the anti-emulsifying agent has the anti-emulsifying property which is obviously superior to that of an ethylene oxide-propylene oxide block copolymer.
The invention has the beneficial effects that: the method has the advantages that reasonable utilization of the residual ink is rapidly realized through regeneration of the residual ink, and the problems of economic loss and environmental pollution caused by waste of the residual ink are avoided; the emulsification of the residual ink is weakened by heating the printing plate cylinder, and the excessive emulsification of the residual ink and the formation of residues are further prevented by the matching use of the regenerated residual ink, so that the printing quality of pictures and texts on the packaging box is ensured.
The specific implementation mode is as follows:
in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The ethylene oxide and propylene oxide block copolymer is purchased from Pluronic RPE2520 of the New Material of lexel chemical industry, Shenzhen; gluconolactone was purchased from hebei li hua biotechnology limited.
Example 1
(1) Regeneration of residual ink: adding 1.5g of ethylene oxide and propylene oxide block copolymer into 100g of residual ink, and mixing for 5min at the rotating speed of 350 r/min;
(2) heating of the plate cylinder: heating the plate cylinder by hot air, wherein the temperature of the hot air is 45 ℃;
(3) printing the packaging box: continuously supplying ink to the printing plate cylinder by using the regenerated residual ink, and printing pictures and texts on the packaging box through the printing plate cylinder;
(4) and (3) drying the ink layer: and drying the ink layer on the packaging box by utilizing hot air, wherein the temperature of the hot air is 55 ℃.
Example 2
The same as in example 1 was repeated except that the amount of the ethylene oxide-propylene oxide block copolymer used in example 1 was changed to 1 g.
(1) Regeneration of residual ink: adding 1g of ethylene oxide propylene oxide block copolymer into 100g of residual ink, and mixing for 5min at the rotating speed of 350 r/min;
(2) heating of the plate cylinder: heating the plate cylinder by hot air, wherein the temperature of the hot air is 45 ℃;
(3) printing the packaging box: continuously supplying ink to the printing plate cylinder by using the regenerated residual ink, and printing pictures and texts on the packaging box through the printing plate cylinder;
(4) and (3) drying the ink layer: and drying the ink layer on the packaging box by utilizing hot air, wherein the temperature of the hot air is 55 ℃.
Example 3
The procedure of example 1 was repeated except that gluconolactone as an adhesion promoter was added to the residual ink of example 1.
(1) Regeneration of residual ink: adding 1.5g of ethylene oxide propylene oxide block copolymer and 1g of glucolactone into 100g of residual ink, and mixing for 5min at the rotating speed of 350 r/min;
(2) heating of the plate cylinder: heating the plate cylinder by hot air, wherein the temperature of the hot air is 45 ℃;
(3) printing the packaging box: continuously supplying ink to the printing plate cylinder by using the regenerated residual ink, and printing pictures and texts on the packaging box through the printing plate cylinder;
(4) and (3) drying the ink layer: and drying the ink layer on the packaging box by utilizing hot air, wherein the temperature of the hot air is 55 ℃.
Example 4
The same as in example 1 was repeated except that the ethylene oxide-propylene oxide block copolymer in example 1 was replaced with a cyclopentylamine malate condensate.
(1) Regeneration of residual ink: adding 1.5g of cyclopentylamine malate condensation compound into 100g of residual ink, and mixing for 5min at the rotating speed of 350 r/min;
(2) heating of the plate cylinder: heating the plate cylinder by hot air, wherein the temperature of the hot air is 45 ℃;
(3) printing the packaging box: continuously supplying ink to the printing plate cylinder by using the regenerated residual ink, and printing pictures and texts on the packaging box through the printing plate cylinder;
(4) and (3) drying the ink layer: and drying the ink layer on the packaging box by utilizing hot air, wherein the temperature of the hot air is 55 ℃.
Preparation of cyclopentylamine malate condensate: adding 10mmol of DL-malic acid, 10mmol of cyclopentylamine, 10.5mmol of EDC.HCL and 10.5mmol of HOBt into dichloromethane, heating to 70-80 ℃ after complete dissolution, keeping the temperature for reaction, extracting reaction liquid by using a saturated sodium bicarbonate solution after the reaction is finished, taking organic phase, distilling under reduced pressure to recover dichloromethane, concentrating the residue, and drying to obtain the cyclopentylamine malate condensation compound. ESI-MS: M/z 270.36[ M +2 ]]+.
Comparative example 1
The plate cylinder in example 1 was removed by heating, and the rest was the same as example 1.
(1) Regeneration of residual ink: adding 1.5g of ethylene oxide and propylene oxide block copolymer into 100g of residual ink, and mixing for 5min at the rotating speed of 350 r/min;
(2) printing the packaging box: continuously supplying ink to the printing plate cylinder by using the regenerated residual ink, and printing pictures and texts on the packaging box through the printing plate cylinder;
(3) and (3) drying the ink layer: and drying the ink layer on the packaging box by utilizing hot air, wherein the temperature of the hot air is 55 ℃.
Comparative example 2
The addition of the demulsifier from example 1 was removed and the remainder was the same as in example 1.
(1) Heating of the plate cylinder: heating the plate cylinder by hot air, wherein the temperature of the hot air is 45 ℃;
(2) printing the packaging box: continuously supplying ink to the printing plate cylinder by adopting residual ink, and printing pictures and texts on the packaging box through the printing plate cylinder;
(3) and (3) drying the ink layer: and drying the ink layer on the packaging box by utilizing hot air, wherein the temperature of the hot air is 55 ℃.
The same batch of packaging boxes of the same specification were printed at a printing speed of 200m/min using the above examples and comparative examples, and the emulsion ratio of the ink at 1 hour and 3 hours of continuous printing was measured, and the measurement results are shown in Table 1.
TABLE 1
| Group of | 1h emulsification Rate/%) | 3h emulsification rate/%) |
| Example 1 | 25 | 32 |
| Example 2 | 27 | 35 |
| Example 3 | 23 | 27 |
| Example 4 | 20 | 22 |
| Comparative example 1 | 31 | 46 |
| Comparative example 2 | 42 | 58 |
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A package printing process for preventing excessive emulsification of residual ink and residue formation, comprising the process steps of:
(1) regeneration of residual ink: adding an anti-emulsifier into the residual ink, and fully mixing;
(2) heating of the plate cylinder: heating the plate cylinder by hot air;
(3) printing the packaging box: continuously supplying ink to the printing plate cylinder by using the regenerated residual ink, and printing pictures and texts on the packaging box through the printing plate cylinder;
(4) and (3) drying the ink layer: drying the ink layer on the packaging box by utilizing hot air;
the anti-emulsifier is a cyclopentylamine malate condensation product, and the preparation method comprises the following steps: adding DL-malic acid, cyclopentylamine and a condensing agent into dichloromethane, heating to 70-80 ℃ after complete dissolution, carrying out heat preservation reaction, extracting a reaction solution by using a saturated sodium bicarbonate solution after the reaction is finished, taking organic phase, carrying out vacuum distillation to recover dichloromethane, and drying a concentrated remainder to obtain a cyclopentylamine malate condensation compound; the mol ratio of the DL-malic acid to the cyclopentylamine to the condensing agent is 1:1: 1.05-1.1; the condensing agent is EDC, HCL and HOBt.
2. A packaging box printing process according to claim 1, wherein: the dosage of the anti-emulsifier is 0.1-2% of the mass of the residual ink.
3. A packaging box printing process according to claim 1, wherein: the temperature of the heated hot air is 40-55 ℃.
4. A packaging box printing process according to claim 1, wherein: the temperature of the dried hot air is 50-65 ℃.
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| MA45290A (en) * | 2016-05-04 | 2019-03-13 | Wave Life Sciences Ltd | PROCESSES AND COMPOSITIONS OF BIOLOGICALLY ACTIVE AGENTS |
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| JPS52123710A (en) * | 1976-04-06 | 1977-10-18 | Carbon Paper Kk | Nonncarbon color papers |
| CN101410458A (en) * | 2006-03-27 | 2009-04-15 | 南非科学和工业研究中心 | Coatings and films |
| CN104292978A (en) * | 2014-10-30 | 2015-01-21 | 佛山市儒林化工有限公司 | Special thermosetting flat plate offset printing ink for membrane-covered iron and preparation method thereof |
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