Ink drying is generally divided into several stages?
Ink drying is generally divided into two stages. The ink changes from liquid to semi-solid, and cannot be transferred in flow. This is the "fixation" stage of the ink. The binder in the semi-solid ink undergoes physical and chemical reactions to completely cure to form a film, which is the complete drying stage of the ink. These two stages are collectively referred to as the ink fixing and drying stage.
The drying form of the ink depends on the composition of the ink binder (the binder is a fluid component in the ink, which is to connect solid powdered substances such as pigments in the ink). Ink using non-drying mineral oil as the connecting material, drying is permeable; ink using dry vegetable oil as the connecting material, drying is oxidative polymerization conjugate type; ink using organic solvent (low boiling point) as the connecting material, drying It is solvent volatile. In the current bright and quick-drying offset printing inks, drying is a comprehensive drying method combining permeation and oxidation, and polymerized conjunctiva.
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