Auxiliary agent for adjustment of "inkiness"-diluent (dilution oil)

This is a material that can reduce the viscosity of the ink, adjust the thinness, increase the flow properties, and improve the spreadability.

They are dry vegetable oils that have been polymerized into different viscosities, or mixed liquids that contain resinous vegetable oils, and solvent oils. There are also single or mixed solvents such as benzene, alcohols, esters and ketones.

The commonly used No. 6 varnish is a typical diluent used to oxidize the conjunctiva and paste ink. It has excellent miscibility with offset printing, resin printing type, and oil type ink, and it has excellent flow properties after being mixed and has good drying properties (of course, when the amount is large, it must be mixed with dry oil). The general dosage is controlled below 5%.

Diluents containing a certain amount of resin can be used in bright inks. In resin inks, the viscosity can be reduced and the flowability can be improved without affecting gloss, fixing speed and drying. For such thinners, the amount is controlled in the range of 1 to 3%.

These thinners can be used in inks that are sticky and thick, or have a slightly higher viscosity and less fluidity, to adjust ink properties. For sticky inks, inks with loose ink and soft bones are best used with an anti-adhesive.

Ink oil (high-boiling point kerosene), which is also a separate and gradually used diluent, is particularly suitable for resin inks and is good for fixation.

Benzene, alcohols, esters, ketones and their mixed solvents are mainly used for gravure inks, roller coating inks, finishing agents, and letterpress inks in letterpress. Used to adjust viscosity and dryness.

Source: China Ink Technology Network