Whether the plastic film printing is carried out smoothly and whether the printed matter is excellent, the formulation of the ink thinner is also important, especially gravure printing. The size and viscosity of the gravure ink concentration (thickness) directly affects the color difference of the printed matter and the clearness of the printed pattern, resulting in an increase in the printing reject rate and even the printing speed. Therefore, the ratio of the ink thinner is very high. important.
First, the inks with different properties should be set to different solvent mixing. Secondly, according to the ambient temperature, humidity, printing equipment, printing speed and printing plate roll of the printing operation, the preparation ratio of the solvent should be prepared.
The printing room temperature is about 20 ° C and the printing speed is 50-100 m / min. The four ink printing thinner formulations and proportions of the gravure printing are provided by the gravure operator:
1. The ratio of the thinner used in the printing of plastic gravure ink:
Quick drying solvent: ethyl acetate 20%, toluene 80%
Medium dry solvent: ethyl acetate 20%, toluene 80% or 100%
Slow drying solvent: ethyl acetate 20%, xylene 80%
(Note: alcohol solvents cannot be added, 5-20% butanone is added when the humidity is high)
2, the ratio of printed plastic gravure ink using thinner:
Quick drying solvent: ethyl acetate 20%, toluene 40%, isopropanol 40%
Medium dry solvent: ethyl acetate 5%, toluene 55%, isopropanol 40%
Slow drying solvent: 50% xylene, 50% isopropanol
Very slow dry solvent: 50% xylene, 50% isopropanol, 1-3% n-butanol
3, the ratio of alcohol-soluble plastic gravure ink using thinner:
Quick drying solvent: ethyl acetate 50%, anhydrous ethanol 50%
Medium dry solvent: ethyl acetate 20%, isopropanol 80%
Slow drying solvent: 50% absolute ethanol, 50% propyl acetate
4, the ratio of cooking plastic gravure ink using thinner:
Quick drying solvent: ethyl acetate 30%, isopropanol 20%, butanone 50%
Medium dry solvent: 10% isopropanol, 40% toluene, 50% butanone
Slow drying solvent: 60% toluene, 35% butanone, propylene glycol methyl ether 5%
Whether the plastic film printing is carried out smoothly and whether the printed matter is excellent, the formulation of the ink thinner is also important, especially gravure printing. The size and viscosity of the gravure ink concentration (thickness) directly affects the color difference of the printed matter and the clearness of the printed pattern, resulting in an increase in the printing reject rate and even the printing speed. Therefore, the ratio of the ink thinner is very high. important.
First, the inks with different properties should be set to different solvent mixing. Secondly, according to the ambient temperature, humidity, printing equipment, printing speed and printing plate roll of the printing operation, the preparation ratio of the solvent should be prepared.
The printing room temperature is about 20 ° C and the printing speed is 50-100 m / min. The four ink printing thinner formulations and proportions of the gravure printing are provided by the gravure operator:
1. The ratio of the thinner used in the printing of plastic gravure ink:
Quick drying solvent: ethyl acetate 20%, toluene 80%
Medium dry solvent: ethyl acetate 20%, toluene 80% or 100%
Slow drying solvent: ethyl acetate 20%, xylene 80%
(Note: alcohol solvents cannot be added, 5-20% butanone is added when the humidity is high)
2, the ratio of printed plastic gravure ink using thinner:
Quick drying solvent: ethyl acetate 20%, toluene 40%, isopropanol 40%
Medium dry solvent: ethyl acetate 5%, toluene 55%, isopropanol 40%
Slow drying solvent: 50% xylene, 50% isopropanol
Very slow dry solvent: 50% xylene, 50% isopropanol, 1-3% n-butanol
3, the ratio of alcohol-soluble plastic gravure ink using thinner:
Quick drying solvent: ethyl acetate 50%, anhydrous ethanol 50%
Medium dry solvent: ethyl acetate 20%, isopropanol 80%
Slow drying solvent: 50% absolute ethanol, 50% propyl acetate
4, the ratio of cooking plastic gravure ink using thinner:
Quick drying solvent: ethyl acetate 30%, isopropanol 20%, butanone 50%
Medium dry solvent: 10% isopropanol, 40% toluene, 50% butanone
Slow drying solvent: 60% toluene, 35% butanone, propylene glycol methyl ether 5%
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