Tri-Chilled Roller Mill

Applications

Paints and inks, Toners, Coating Masses, Pigments and Dyestuffs, Cosmetics, Pharmaceuticals, and other High viscosity liquid grinding.

Characteristics


Glossary of ink terms

Absorption

The penetration of ink into the surface of the paper stock by capillary attraction between the ink vehicle and paper fibres or coating.

Binder

Part of the ink vehicle that binds the pigment to the paper, usually a heavy bodied drying oil or resin.

Bleeding

The spreading or running of a pigment by the action of a solvent, e.g. water, oil, etc.

Bodied Linseed Oil

Linseed oil, thickened by heating until the desired viscosity has been obtained.

Bronzing

Printing with a stick size and dusting same with finely powdered metal particles to give the appearance of metal finishing.

Creeping

Flowing of an ink beyond the limits of the design or image area.

Driers

Substances which accelerate the rate of oxygen absorption or drying of oils, varnishes or vehicles. These usually comprise organic salts of lead, manganese or cobalt.

Flow

The ability of ink to spread over a surface or into a thin film.

Length

The property of an ink or varnish whereby it may be drawn into strings before breaking. The longer the strings the longer is the ink or varnish.

Linseed Oil

Oil pressed, or extracted from flax seeds. It is the most widely used vegetable drying oil and is main ingredient of printing ink and paint vehicles.

Litho Varnish

Linseed oil, or other drying oil that has been bodied by heating to produce a vehicle of proper viscosity for use in litho ink.

Livering

The solidifying of printing inks over time caused by chemical reactions between the ingredients.

Opacity

An ink termed opaque will cover the body cover of the stock being printed, or any matter which it is overprinting. The degree varies considerably with the colour and type of ink, even those described as opaque.

Picking

The lifting or pulling of fibres or coating off the stock due to tack of ink.

Reducers

Liquid materials added to ink to reduce its consistency or tack.

Transparency

Inks which allow light or colour to pass through them, often changing the base colour/s.

Short INK

An ink which possesses a buttery consistency and breaks off with short strings when an attempt is made to draw it out between fingers. Prone to spin off rollers at high speed.

Tack

The adhesiveness of an ink for another surface. It is the stickiness or pull observed when tapping the ink out onto a piece of paper.

Trapping

The ability of a printed film to accept overprinting with another colour.

Vehicle

The liquid portion of an ink that holds and carries the pigment and provides workability or press drying properties and binds the pigment to the paper after the ink has dried.

Viscosity

The resistance to flow of an oil, varnish or ink caused by internal friction between the particles comprising it. In simple terms it may be considered as a thickness or thinness of oil, varnish or ink from the standpoint of flow properties.