Precauciones para el uso de tintas con base de disolvente
01
Solvent-based inks are dangerous goods and must be stored away from sources of fire. Printers usually store them in the basement or in the low-temperature dangerous goods warehouse, in which case the viscosity of the ink is high and, when the storage temperature is below 0 ℃, the ink also undergoes the phenomenon of gelation. When the ink leaves the low-temperature warehouse, it cannot be immediately poured into the ink tank for use, otherwise the ink’s performance cannot be reproduced normally, affecting the quality of the printed material. At this point, the ink must be heated before use, but care must also be taken to ensure that the temperature does not rise too quickly, to prevent the proportion of solvent volatilization from becoming disproportionate and affecting the performance of the ink. It can be stored under the same conditions as the temperature of the print shop for a day and a night before use.
02
Solvent ink should be shaken well before use, as pigment precipitation will occur after prolonged storage, resulting in inconsistency in pigment content in the upper and lower parts of the ink, which will affect the consistency of the tone before and after the printed material.
03
The initial viscosity of the solvent-based ink produced by the ink factory is generally high, mostly at 30-40 seconds, up to 60 seconds. Before printing on the machine, the appropriate thinner should be used to reduce the viscosity of the ink, and the viscosity should be checked at about 25 seconds (25 ℃ * 4 # coated cuvette). Control the viscosity so that the plate does not dry out, there are no false edges, there is no roughness for the upper limit of viscosity, so that the prints are not watery, the color is not thin for the lower limit of viscosity.
At the same time, attention should also be paid to the selection of the same type of ink used with the thinner. Various types of solvent-based inks are equipped with special thinners, because their composition is different, so it should not be added at random, so as not to affect the ink, it cannot be a normal print.
In addition, the choice of thinner must be combined with the printing speed, dryer temperature, season and other factors. Solvent-based plastic film printing ink, for example, cannot be used under normal (medium speed) thinner conditions. In summer, the appropriate amount (less than 5%) of n-butanol can be added to slow down the drying speed, and in winter a fast thinner can be used.
04
In printing, due to the solvent-based ink in the color, the continuous material, the solvent to the substrate in the transfer of different properties, after a period of time, due to the reduction of the resin content in the ink, the evaporation of the solvent, the ink becomes viscous, the need to add thinner to adjust, but to control the amount of thinner. If the printing machine is not installed in the ink circulation system, when adding solvent, do not add too much at once, use a small amount, add diligently, while adding the stirring method, in order to maintain the uniformity and consistency of the ink, to avoid changes in the structure of the ink. In addition, after adding solvent several times, it is necessary to add a part of the original ink in an appropriate way, in order to guarantee the consistency of the color and the brightness of the printed material.
05
In the printing process, due to the detachment of the surface layer of the substrate (especially in paper materials), it is easy for the ink to fall off, resulting in larger ink particles. It has been found that the fineness of the ink increases by more than 50 μm from the original 20 μm. These impurities are prone to cause knife lines, white spots and other printing defects, so the printing machine’s ink circulation system must be strengthened and impurities removed.
06
The ink remaining after printing is completed is stored in a sealed container after being filtered, and can be mixed with the same variety and color for use in the next print.
08
Solvent-based ink dries by volatilization, and the rate of solvent volatilization due to ambient temperature and humidity, and relative humidity that is too low will produce static electricity. Therefore, it is best to maintain a constant temperature and humidity in the printing environment, with a general temperature control of 25 ℃ ± 1 ℃ and a relative humidity control of 65 ℃ ± 5 %, in order to reduce printing errors.
09
Most solvents are flammable, explosive and have a certain degree of toxicity, they pollute the environment and endanger personal health. Therefore, in production, use and storage, attention should be paid to fire prevention and explosion protection, while, as far as possible, non-toxic or low-toxic solvents should be used, as well as solvent recovery devices, in order to reduce environmental pollution.
Analysis of common failures in gravure printing
(1) The surface tension of the PE or PP film is less than (3.6-3.8 × 10-2 N/m). The surface tension measuring fluid to check the surface tension of the film, if it does not meet the requirements, must be reprocessed.
(2) The ink is too diluted, the binder is destroyed or an incorrect thinner has been used. When the ink is diluted, the viscosity is best checked at 25-35 seconds (4 # coated cup). In addition, the choice of thinner must be careful, do not use the wrong one, so as not to affect the quality of the ink.
(3) The ink itself has poor adhesion to the film. The ink varieties should be replaced or the ink manufacturer contacted.
2, the print is lost
Phenomenon: in the printing process, at the beginning of small words, fine lines are lost and, in severe cases, the pattern cannot be printed.
Causes and solutions:
(1) the viscosity of the ink is high and the printing speed does not match. Adjust the viscosity of the ink is not the correct value.
(2) The ink drying speed is too fast, while the printing speed is too slow. The ink in the slow-drying thinner (or slow-drying solvent n-butanol), but to strictly control the amount added, such as adding too much, will occur, such as adhesion and other ills.
(3) The mesh of the printing plate is too shallow, the plate needs to be remade.
(4) The angle and position of the scraper are not suitable. The normal angle of the scraper blade is usually between 30 and 60°, not only so that the blade does not damage the plate, but also so that the layer of printing ink is better. The squeegee position should be combined with the ink drying situation, for example, if the ink dries too quickly, the squeegee can be moved forward appropriately, shortening the distance between the squeegee and the stamping point.
(5) to the hot air position is not appropriate, adjust the hot air position.
3, ink overflow
Phenomenon: field printing surface with spots, patterns or ink overflow from the line part.
Causes and solutions:
(1) Low viscosity after ink dilution. Add some of the original ink, the viscosity will adjust in 25-35 seconds (the current task 4 # cup); or empty the printing machine for a period of time, so that the solvent volatilized from part of the ink viscosity increases to a suitable value.
(2) The printing speed is too slow, or the ink drying speed is slow, improve the printing speed, or the ink drying thinner.
(3) The engraving of the screen cavity of the printing plate is too deep or the wear is severe, it is necessary to remake the plate.
(4) The hardness, pressure and angle of the squeegee are not suitable. Adjust the pressure and angle of the squeegee, rectify the edge of the squeegee blade and reduce the hardness.
4. Color coma
Phenomenon: when printing, the ink on the plate of the last color will be printed on the substrate before the ink of the print color adheres, print backwards on the plate of the last color.
Causes and solutions:
(1) The previous color ink is not completely dry. The previous color ink should add fast-drying thinner to improve its drying speed and make the subsequent color ink slower than the previous color ink.
(2) The adhesion strength of the previous color ink is not good, replace the ink.
(3) The printing speed is too fast, the engraving of the mesh cavity of the printing plate is too deep, the printing pressure is too high, reduce the printing speed, strengthen the drying function, reduce the pressure of the printing rollers or change to a shallow plate.
(4) Improper use of thinner, check and change to a suitable thinner.
5, adhesion
The adhesion phenomenon can be roughly divided into three cases.
(1) after the printing reel reaches the bag when adhesion occurs, known as “adhesion”.
(2) after the bag is stored in the goods packaging, plastic bags in the package adhesion phenomenon, known as “secondary adhesion”.
(3) Adhesion that occurs after packaging is called “triple adhesion”.
Causes and solutions:
Generally speaking, the main factors causing adhesion are pressure, temperature, relative humidity and time.
Adhesion is mainly due to residual solvents in the printing or to Adhesion is mainly due to residual solvents in the printing or winding tension. This is because the volatilization of the ink thinner is too slow or the printing speed is too fast, while the drying effect of the drying system is poor, the engraving of the cavity of the printing plate mesh is too deep, the ambient temperature and humidity are too high. Provided that the appropriate ink thinner is selected, the printing speed is reduced, the drying effect of the drying system is improved, the ambient temperature and humidity are improved, the winding tension is appropriately reduced, the shallow mesh plate cylinder is reproduced and other measures are taken, the problem of primary adhesion can be resolved and avoided.
Secondary adhesion is mainly affected by the temperature and humidity of the product’s storage environment, mainly the ambient temperature or relative humidity is too high, so that the ink becomes soft, sticky or reabsorption occurs, thus causing adhesion. For example, ink under normal circumstances can withstand a temperature of 50 ℃, but when the relative humidity increases by 10 %, its heat resistance decreases, only 45 ℃. For this reason, as long as the ambient temperature and humidity are controlled, general secondary adhesion can be avoided.
The third adhesion is mainly due to the content. Due to PE, the PP film has permeability, when it is used to package items containing alcohol, esters, flavorings, etc., such as balm, liquid cosmetics, ginger, mustard, curry powder, etc., it will be due to the alcohol, esters, flavorings, etc., exuded and migrated to the ink layer, so that the ink layer of the reabsorption of adhesion occurs.
6. Whitening
Phenomenon: a layer of white case on the surface of the print.
Causes:
(1) solvent whitening: mainly due to the volatile latent heat of the ink used in solvents, such as alcohol solvents, when the ambient relative humidity is too high, the solvent in the print is caused by the temperature drop in the air that accumulates moisture falling to the surface of the print, thus forming a layer of white frost.
(2) Resin whitening: due to the fact that the volatilization rate of the ink solvent is different, so that the solvent is unbalanced, mainly the volatilization rate of the true solvent is faster than the volatilization rate of the diluent, and therefore the proportion of the ink represented by the diluent increases, and when it increases to a certain point, will cause the resin to precipitate, thus forming a layer of material similar to white frost.
Solution:
(1) Reduce the relative humidity of the environment, it is best to be able to maintain a constant temperature, constant humidity printing conditions.
(2) Improve the drying effect of the drying system.
(3) Switch to a slow-drying solvent.
(4) Add a little real slow-evaporating solvent, or adjust the solvent ratio.
7, water lines or water splashes
Phenomenon: the print field is not filled, there are wavy patterns.
Product causes and solutions:
(1) low ink viscosity. Supplement with suitable original ink or add high viscosity continuous material.
(2) slow printing speed. An appropriate increase in printing speed may be required.
8, ring-shaped mottling
Phenomenon: the print is not flat, the field has irregular mottling.
Causes and solutions:
(1) ink thixotropy, poor leveling or excessive dilution of the ink, low viscosity, should replace the ink or improve the viscosity of the ink.
(2) the drying speed is too fast, the printing speed is too slow. Add slow-drying thinner, adjust the printing speed.
(3) The orifice of the printing plate mesh is not appropriate (generally too deep), it is necessary to re-engrave the plate.
(4) The effect of static electricity. Increase the device to eliminate static electricity or add antistatic agent to the ink.
9, bubble
Phenomenon: small bubbles in the ink, the print appears with blank spots.
Causes and solutions:
(1) There is a large amount of air mixed in the ink tank. Use defoamer to reduce the amount of air bubbles.
(2) The drop when the ink returns to the ink tank is too large. Adjust the position and height of the ink tank.
(3) The ink has been stored for too long. Adjust and add some new ink or replace it all.
(4) The print speed is too fast. Reduce the print speed appropriately.
10, locking plate
Phenomenon: the ink in the hole of the printing plate mesh dries and solidifies, resulting in printed text, missing or disconnected lines, and serious patterns that cannot be printed.
Causes and solutions:
(1) The distance between the squeegee contact point and the printing point is too great. Shorten the distance between the squeegee contact point and the printing point.
(2) The printing speed is too slow. Increase the printing speed.
(3) The ink dries too quickly in the screen cavity of the printing plate before it is transferred to the substrate. Add a slow-drying agent to the ink to reduce the drying speed of the ink.
(4) The ink particles are too large or mixed with other impurities. Filter the ink or replace it.
(5) The printing plate is not cleaned and the residual ink dries and solidifies in the cavities of the mesh, causing a blockage. Thoroughly clean the printing plate.
11, the ink is gelatinous
There are two cases, one is that it has just come out of the warehouse and the ink is gelatinous, it cannot be poured out of the ink drum. In general, this phenomenon, which is due to the poor resistance to low temperatures of the ink on the continuous material, is easy to produce in winter and spring. If the ink is light and gelatinous, gently shaking the ink drum can destroy this property and it can then be used in the machine. If the ink is gelatinous and heavy, it should be stored at room temperature for a day and a night until the ink returns to normal before use.
Another situation is that, in the process of use, the fluidity of the ink gradually deteriorates, until it becomes gelatinous and cannot flow, which is mainly due to the improper use of thinner (such as only alcohol or turpentine) and caused by alcohol that may also have too high a water content. When the relative humidity of the environment is too high, due to the hygroscopic effect of the alcohol in the ink, over time, the increase in humidity in the ink results in poor or even gelatinous ink flow. This situation is rare, the ink can be changed again, new ink can be added to a small amount of frozen ink for use. To prevent this from happening, each time ink is added, less thinner should be added and a little new ink should be added at the same time, to ensure the stability of the ink composition.
01
Solvent-based inks are dangerous goods and should be stored away from fire sources. Printing factories mostly store them in the basement or the dangerous goods warehouse with low temperature, in this case the viscosity of the ink is on the high side, and when the storage temperature is lower than 0 ℃, the ink will also happen the phenomenon of gelation. When the ink from the low-temperature warehouse out, can not be immediately poured into the ink tank to use, otherwise the performance of the ink can not be played normally, affecting the quality of printed matter. At this time, the ink should be warmed up before use, but also pay attention to the temperature should not be too fast, to prevent the solvent volatilization ratio is out of proportion and affect the performance of the ink. It can be stored under the same condition with the temperature of printing workshop for one day and night before use.
02
Solvent ink should be stirred well before use, because there will be some pigment precipitation after long time storage, resulting in inconsistency of pigment content in the upper and lower parts of the ink, which will affect the consistency of the hue before and after the printed matter.
03
The initial viscosity of solvent-based ink produced by the ink factory is generally high, mostly in 30-40 seconds, up to 60 seconds. Before printing on the machine should be used to reduce the viscosity of the ink with the appropriate diluent, and viscosity control in about 25 seconds (25 ℃ * coated 4 # cup). Control viscosity to not dry plate, no false edges, no roughness for the upper limit of viscosity, to the prints are not watery, the color is not thin for the lower limit of viscosity.
At the same time, attention should also be paid to the selection of the same type of ink used with the diluent. Various types of solvent-based inks are equipped with special diluents, because of its composition is different, so it must not be added at random, so as not to affect the ink, can not be normal printing.
In addition, the choice of thinner should be combined with the printing speed, dryer temperature, seasonal and other factors. Solvent-based plastic film printing ink, for example, the general situation can not be used in normal (medium-speed) diluent, summer can be added to the appropriate amount (less than 5%) n-butanol to reduce the drying speed, the winter can be used to fast diluent.
04
In printing, due to the solvent-based ink in the color, continuous material, solvent to the substrate on the transfer of different properties, after a period of time, due to the reduction of resin content in the ink, solvent evaporation, the ink becomes viscous, the need to add thinner to adjust, but to control the amount of thinner. If the printing machine is not installed on the ink circulation system, when adding thinner should not be added too much at a time, we should use a small amount, add diligently, while adding the method of stirring, in order to maintain uniformity and consistency of ink, to prevent changes in the ink structure. Moreover, after adding several times of thinner, it is necessary to add a part of the original ink appropriately, in order to ensure the consistency of the colour and gloss of the printed matter.
05
In the printing process, due to the substrate surface coating off (especially paper materials), it is easy to fall into the ink, resulting in larger ink particles. Tested and found that the fineness of the ink will increase by more than 50μm from the original 20μm. These impurities are prone to cause knife lines, white spots and other printing faults, so the ink circulation system should be strengthened printing machine ink filtration, get rid of impurities.
06
Different types of ink cannot be mixed and blended with each other, so as not to trigger ink deterioration. In particular, it is necessary to prevent the misuse of gravure printing ink mixed with flexographic printing ink, affecting the printing quality.
07
The remaining ink after printing is completed is stored in a sealed container after being filtered, and can be mixed with the same variety and colour for use in the next printing.
08
Solvent-based ink is dried by volatilisation, and the volatilisation rate of solvents by the environmental temperature and humidity, and the relative humidity is too low will produce static electricity. Therefore, the printing environment is best to maintain a constant temperature and humidity, the general temperature control at 25 ℃ ± 1 ℃, the relative humidity control at 65 ℃ ± 5%, in order to reduce printing failures.
09
Most solvents are flammable, explosive, and have a certain degree of toxicity, polluting the environment and endangering personal health. Therefore, production, use and storage should pay attention to fire prevention, explosion-proof, while as far as possible to use non-toxic or low-toxicity solvents, solvent recovery devices to deal with, in order to reduce environmental pollution.
Gravure printing common failure analysis
1, poor print fastness
Causes and solutions:
(1) PE or PP film surface tension is lower than (3.6-3.8 × 10-2N/m). Surface tension measuring fluid to check the surface tension of the film, if not up to the requirements, should be re-processed.
(2) The ink is diluted too thin, the binder is destroyed or the wrong diluent is used. When diluting ink viscosity is best controlled at 25-35 seconds (coated 4 # cup) is appropriate. In addition, the choice of thinner should be carefully, do not use the wrong, so as not to affect the quality of the ink.
(3) The ink itself has poor adhesion fastness to the film. Ink varieties should be replaced or ink manufacturer contact.
2, the print is lost
Phenomenon: in the printing process, the beginning of the small words, fine lines lost, and in severe cases, can not print the pattern.
Causes and solutions:
(1) ink viscosity is high, and printing speed does not match. Adjust the ink viscosity is not to the right value.
(2) ink drying speed is too fast, while the printing speed is too slow. Ink in the slow drying diluent (or n-butanol slow drying solvent), but to strictly control the amount added, such as adding too much will occur, such as adhesion and other ills.
(3) Printing plate mesh is too shallow, the need to re-make the plate.
(4) scraper angle and position is not appropriate. Normal doctor blade angle is generally between 30-60 °, not only can keep the blade is not easy to hurt the plate, and printing ink layer is better. Squeegee position should be combined with the ink drying situation, such as ink drying too fast, the squeegee can be moved forward appropriately, shorten the distance between the squeegee and the embossing point.
(5) to the hot air position is not appropriate, adjust the hot air position.
3, overflow ink
Phenomenon: field printing surface with spots, patterns, or ink overflow from the line part.
Causes and solutions:
(1) low viscosity after ink dilution. Add part of the original ink, the viscosity will be adjusted 25-35 seconds (the current task 4 # cup); or empty machine printing for a period of time, so that the solvent volatilised off part of the ink viscosity to increase to a suitable value.
(2) Printing speed is too slow, or the ink drying speed is slow, improve the printing speed, or to the ink to adjust the drying thinner.
(3) The printing plate screen cavity engraving is too deep or wear and tear is serious, need to re-make the plate.
(4) Squeegee hardness, pressure and angle is not appropriate. Adjust the squeegee pressure and angle, grinding squeegee knife edge, reduce the hardness.
4, eat colour
Phenomenon: set printing, the ink on the plate of the latter colour will be printed on the substrate before the ink of the colour of the prints stick down, reverse print to the plate of the latter colour.
Causes and solutions:
(1) The thorough drying of the ink of the previous color is not good. The former color ink to add fast-drying diluent, improve its drying speed, and make the latter color ink slower than the former color ink.
(2) The previous color ink adhesion fastness is not good, replace the ink.
(3) Printing speed is too fast, the printing plate mesh cavity engraving is too deep, the printing pressure is too large, reduce the printing speed, strengthen the drying function, reduce the pressure of the printing rollers or change to a shallow plate.
(4) improper use of thinner, check and change the appropriate thinner.
5, adhesion
Adhesion phenomenon can be broadly divided into three cases.
(1) after the print reel to the bag when the adhesion occurs, known as ‘a sticking’.
(2) after the storage of the bag in the packaging of goods, plastic bags in the bundle of adhesion phenomenon, known as ‘secondary adhesion’.
(3) The adhesion that occurs after packaging is called ‘three adhesion’.
Causes and solutions:
Generally speaking, the main factors causing adhesion are pressure, temperature, relative humidity and time.
A sticking is mainly due to residual solvent in the print or winding tension. This is due to the ink thinner volatilisation is too slow or printing speed is too fast, while the drying system drying effect is poor, the printing plate mesh cavity engraving is too deep, the ambient temperature and humidity is too high. As long as the selection of appropriate ink thinner, reduce the printing speed, enhance the drying effect of the drying system, improve the ambient temperature and humidity, properly reduce the winding tension, re-production of shallow mesh plate cylinder and other measures, can be solved and avoid the problem of primary adhesion.
Secondary adhesion is mainly affected by the temperature and humidity of the product storage environment, mainly the ambient temperature or relative humidity is too high, so that the ink becomes soft, sticky or resorption occurs, thus causing adhesion. Such as ink under normal circumstances can withstand 50 ℃ temperature, but when the relative humidity increased by 10%, its heat resistance will decline, only 45 ℃. For this reason, as long as the control of environmental temperature and humidity, the general secondary adhesion can be prevented.
The third adhesion is mainly caused by the contents. Due to PE, PP film has permeability, when used to package items containing alcohol, esters, flavours, etc., such as balsam, liquid cosmetics, ginger, mustard, curry powder, etc., it will be due to alcohol, esters, flavours, etc., exuded and migrated to the ink layer, so that the ink layer of the resorption of the adhesion occurs.
6, whitening
Phenomenon: a layer of white box on the surface of the print.
Causes:
(1) solvent whitening: mainly because of the ink used in the volatile latent heat of solvents, such as alcohol solvents, when the environmental relative humidity is too large, the solvent excavation in the imprint caused by the imprint of the ink layer of the temperature drop in the air pooling of moisture falls to the surface of the imprint, thus forming a layer of white frost.
(2) resin whitening: due to the ink solvent volatilisation rate is different, so that the solvent is out of balance, mainly true solvent volatilisation rate is faster than the volatilisation rate of the diluent, and thus the proportion of the ink accounted for by the diluent increases, and when increased to a certain extent, will cause the resin to precipitate, thereby forming a layer of material similar to the white frost.
Solution:
(1) Reduce the relative humidity of the environment, it is best to be able to maintain a constant temperature, constant humidity printing conditions.
(2) Enhance the drying effect of the drying system.
(3) Change to slow drying solvent.
(4) Add some slow evaporation rate of the real solvent, or adjust the ratio of solvents.
7, water lines or water splash
Phenomenon: the field part of the print is not full, there are wavy patterns.
Produce causes and solutions:
(1) ink viscosity is low. Supplement the appropriate original ink, or add high viscosity continuous material.
(2) slow printing speed. Appropriate increase in printing speed can be.
8, ring-shaped mottling
Phenomenon: the print is not flat, the field part of the irregular mottling.
Causes and solutions:
(1) ink thixotropy, poor levelling, or excessive ink dilution, low viscosity, should replace the ink or improve the viscosity of the ink.
(2) drying speed is too fast, printing speed is too slow. Add slow drying diluent, adjust the printing speed.
(3) The printing plate mesh hole is not appropriate (generally deep), need to re-engrave the plate.
(4) The effect of static electricity. Increase the device to eliminate static electricity, or add antistatic agent in the ink.
9, bubble
Phenomenon: tiny bubbles in the ink, the print appears blank dots.
Causes and solutions:
(1) There is a large amount of air mixed in the ink tank. Use defoamer to reduce the amount of air bubbles.
(2) The drop when the ink returns to the ink tank is too large. Adjust the position and height of the ink tank.
(3) The ink has been stored for too long. Adjust and add some new ink or replace all.
(4) Printing speed is too fast. Appropriately reduce the printing speed.
10, blocking plate
Phenomenon: ink in the printing plate mesh hole dry solid, resulting in printed text, lines missing or disconnected, serious patterns can not be printed.
Causes and solutions:
(1) the distance between the squeegee contact point and the embossing point is large. Shorten the distance between the squeegee contact point and the embossing point.
(2) Printing speed is slow. Increase the printing speed.
(3) Ink dries too fast, in the screen cavity of the printing plate before it is transferred to the substrate. Add a slow drying agent to the ink to reduce the ink drying speed.
(4) Ink particles are too large or mixed with other impurities. Filter the ink or replace the ink.
(5) The printing plate is not cleaned, and the residual ink dries and solidifies in the mesh cavities, causing blockage. Thoroughly clean the printing plate.
11, the ink is jelly-like
There are two cases, one is just pulled out of the warehouse ink is jelly-like, can not be poured out of the ink drum. Generally easy to occur in the winter and spring this phenomenon, which is due to the ink in the continuous material of low temperature resistance caused by poor. If the ink jelly is light, gently shake the ink drum can destroy this property, and then can be used on the machine. If the ink is heavy jelly, it should be stored in the room temperature environment for a day and night, until the ink back to normal before use.
Another situation is in the process of use, the fluidity of the ink gradually deteriorate, until it is jelly-like and can not flow, which is mainly due to the improper use of diluent (such as only alcohol or stupid) and caused by the alcohol may also be too high water content. When the relative humidity of the environment is too high, due to the hygroscopic effect of the alcohol in the ink, over time, the increase in moisture in the ink, resulting in poor ink flow or even jelly-like. This situation is rare, you can re-exchange the ink, the new ink can be added to a small amount of frozen ink to use. In order to prevent this from happening, each time the ink should be added less thinner, and to add some of the new ink at the same time, in order to ensure the stability of the ink composition.
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| NPGDA Monomer | Neopentyl glycol diacrylate | 2223-82-7 |
| HDDA Monomer | Hexamethylene Diacrylate | 13048-33-4 |
| EO4-BPADA Monomer | ETHOXYLATED (4) BISPHENOL A DIACRYLATE | 64401-02-1 |
| EO10-BPADA Monomer | ETHOXYLATED (10) BISPHENOL A DIACRYLATE | 64401-02-1 |
| EGDMA Monomer | Ethylene glycol dimethacrylate | 97-90-5 |
| DPGDA Monomer | Dipropylene Glycol Dienoate | 57472-68-1 |
| Bis-GMA Monomer | Bisphenol A Glycidyl Methacrylate | 1565-94-2 |
| Trifunctional Monomer | ||
| TMPTMA Monomer | Trimethylolpropane trimethacrylate | 3290-92-4 |
| TMPTA Monomer | Trimethylolpropane triacrylate | 15625-89-5 |
| PETA Monomer | Pentaerythritol triacrylate | 3524-68-3 |
| GPTA ( G3POTA ) Monomer | GLYCERYL PROPOXY TRIACRYLATE | 52408-84-1 |
| EO3-TMPTA Monomer | Ethoxylated trimethylolpropane triacrylate | 28961-43-5 |
| Photoresist Monomer | ||
| IPAMA Monomer | 2-isopropyl-2-adamantyl methacrylate | 297156-50-4 |
| ECPMA Monomer | 1-Ethylcyclopentyl Methacrylate | 266308-58-1 |
| ADAMA Monomer | 1-Adamantyl Methacrylate | 16887-36-8 |
| Methacrylates monomer | ||
| TBAEMA Monomer | 2-(Tert-butylamino)ethyl methacrylate | 3775-90-4 |
| NBMA Monomer | n-Butyl methacrylate | 97-88-1 |
| MEMA Monomer | 2-Methoxyethyl Methacrylate | 6976-93-8 |
| i-BMA Monomer | Isobutyl methacrylate | 97-86-9 |
| EHMA Monomer | 2-Ethylhexyl methacrylate | 688-84-6 |
| EGDMP Monomer | Ethylene glycol Bis(3-mercaptopropionate) | 22504-50-3 |
| EEMA Monomer | 2-ethoxyethyl 2-methylprop-2-enoate | 2370-63-0 |
| DMAEMA Monomer | N,M-Dimethylaminoethyl methacrylate | 2867-47-2 |
| DEAM Monomer | Diethylaminoethyl methacrylate | 105-16-8 |
| CHMA Monomer | Cyclohexyl methacrylate | 101-43-9 |
| BZMA Monomer | Benzyl methacrylate | 2495-37-6 |
| BDDMP Monomer | 1,4-Butanediol Di(3-mercaptopropionate) | 92140-97-1 |
| BDDMA Monomer | 1,4-Butanedioldimethacrylate | 2082-81-7 |
| AMA Monomer | Allyl methacrylate | 96-05-9 |
| AAEM Monomer | Acetylacetoxyethyl methacrylate | 21282-97-3 |
| Acrylates Monomer | ||
| IBA Monomer | Isobutyl acrylate | 106-63-8 |
| EMA Monomer | Ethyl methacrylate | 97-63-2 |
| DMAEA Monomer | Dimethylaminoethyl acrylate | 2439-35-2 |
| DEAEA Monomer | 2-(diethylamino)ethyl prop-2-enoate | 2426-54-2 |
| CHA Monomer | cyclohexyl prop-2-enoate | 3066-71-5 |
| BZA Monomer | benzyl prop-2-enoate | 2495-35-4 |