1. Try to design suitable resin ratio according to different characteristics of raw materials
Different varieties of raw materials, the difference between itself is very large, even if the same pigment varieties after post-processing is different, the nature of the difference is also very large, which requires the compound ink formula designer in the design of composite ink formulations, Fully test this difference. Due to the different requirements of various colors of ink in the printing process, the proportion of various synthetic resins in the ink formulation should be designed according to the characteristics of the pigments, ie the oil absorption, tinting strength, dispersion properties, etc., when designing the formulation. This can be determined by experimentation.
In general, severe fog issues can often be resolved by improving the flow of the ink. The reason for this is the improvement of ink flow, which is low viscosity printing. Reduce the impact of the ink on the blade, so that the blade can cleanly scrape the blank part of the ink.
2. Scientific application of organic pigments
Adding body pigments to the formula (such as YMT ultrafine powder, YMT ultrafine barium sulfate, CC-65 powder, FH-95 powder, etc.) is not only a problem of cost reduction in Colo. The resin encapsulating the pigment further enhances the body of the ink, reduces the viscosity of the ink at the same printing viscosity, and improves the squeegee performance of the blade.
3, the most current use of wax powder and OK-412 matt powder to solve fog problem
Wax powder and matte powder OK-412 is an effective additive to reduce the problem of fog plate. The particles can easily be released on the surface of the ink and enhance the scraping performance of the blade. However, many manufacturers add wax powder and OK-412 matt powder method will not be able to solve the problem of version fog, it is recommended to be made of wax powder and OK-412 matte powder into semi-finished products, the fineness of the ink grinding qualified After being added at high speed and without grinding, the effect of solving the fog plate problem will be reduced.
4, using a suitable wet dispersing additives to improve the compatibility of pigments and synthetic resins
The purpose of adding wetting and dispersing aids to the formulation is to solve the problems in the formulation system, including the poor dispersion of pigments, poor coating of pigments by various synthetic resins, and poor stability of the system itself, and these problems are solved. Inadequate results often cause fog problems. It is recommended to use L-18 dispersant and GK-208 additives to disperse black, blue and red pigments.
5, using additives to solve the problem of fog plate
According to the foreign experience in solving high-speed printing fog problem, it is recommended to use AK-505 auxiliaries which is to reduce the affinity of composite ink and chromium plate layer, and the ink is not easy to adhere to the plate. At present, many domestic manufacturers have good results.
6, using a new resin system to design formula
As mentioned earlier, CL-PP composite inks are more prone to fog problems. It is recommended to use BK-6380 resin system instead of CL-PP system.
Different varieties of raw materials, the difference between itself is very large, even if the same pigment varieties after post-processing is different, the nature of the difference is also very large, which requires the compound ink formula designer in the design of composite ink formulations, Fully test this difference. Due to the different requirements of various colors of ink in the printing process, the proportion of various synthetic resins in the ink formulation should be designed according to the characteristics of the pigments, ie the oil absorption, tinting strength, dispersion properties, etc., when designing the formulation. This can be determined by experimentation.
In general, severe fog issues can often be resolved by improving the flow of the ink. The reason for this is the improvement of ink flow, which is low viscosity printing. Reduce the impact of the ink on the blade, so that the blade can cleanly scrape the blank part of the ink.
2. Scientific application of organic pigments
Adding body pigments to the formula (such as YMT ultrafine powder, YMT ultrafine barium sulfate, CC-65 powder, FH-95 powder, etc.) is not only a problem of cost reduction in Colo. The resin encapsulating the pigment further enhances the body of the ink, reduces the viscosity of the ink at the same printing viscosity, and improves the squeegee performance of the blade.
3, the most current use of wax powder and OK-412 matt powder to solve fog problem
Wax powder and matte powder OK-412 is an effective additive to reduce the problem of fog plate. The particles can easily be released on the surface of the ink and enhance the scraping performance of the blade. However, many manufacturers add wax powder and OK-412 matt powder method will not be able to solve the problem of version fog, it is recommended to be made of wax powder and OK-412 matte powder into semi-finished products, the fineness of the ink grinding qualified After being added at high speed and without grinding, the effect of solving the fog plate problem will be reduced.
4, using a suitable wet dispersing additives to improve the compatibility of pigments and synthetic resins
The purpose of adding wetting and dispersing aids to the formulation is to solve the problems in the formulation system, including the poor dispersion of pigments, poor coating of pigments by various synthetic resins, and poor stability of the system itself, and these problems are solved. Inadequate results often cause fog problems. It is recommended to use L-18 dispersant and GK-208 additives to disperse black, blue and red pigments.
5, using additives to solve the problem of fog plate
According to the foreign experience in solving high-speed printing fog problem, it is recommended to use AK-505 auxiliaries which is to reduce the affinity of composite ink and chromium plate layer, and the ink is not easy to adhere to the plate. At present, many domestic manufacturers have good results.
6, using a new resin system to design formula
As mentioned earlier, CL-PP composite inks are more prone to fog problems. It is recommended to use BK-6380 resin system instead of CL-PP system.
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