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Water Emulsification Performance
The quality of lithographic printing depends on a satisfactory ink/water emulsion being formed on the plate cylinder of the press as lithography relies on a physical distinction between the hydrophobic image and hydrophilic non-image areas of the lithographic plate.
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Tack of Printing Inks and Varnishes
Tack is a measure of the forces required to split a single film into two. In case of ink, such film splitting is influenced by rheological and adhesive ink properties and the internal cohesion of the ink.
Tack depends heavily on the ink formulation. Inks must be formulated to optimize the quality of printing and minimize undesired effects in the printing process, such as substrate rupture or coating pick-up, web contamination, dot gain, poor setting, loss of gloss, loss of color density etc. that can be caused by too high or too low tack.
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Automated Varnish Preparation
The varnish visco-elasticity is an essential quality criterion in printing ink resins. Round Robin Test of leading printing ink resin and printing ink manufacturers document that the exactly defined varnish preparation is the key for further accurate rheological measurements of visco-elasticity.
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Automated Cloud Point Measurement
The cloud point temperature is a characteristic value in the quality control of synthetic resins for printing inks. Deviations in cloud point can lead to sedimentation in the varnish, differences in drying speed, loss of gloss and tack stability.
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Measuring Solutions