What ink is used in gravure printing?
However, product gravure uses both water- and solvent-based inks (GATF 1992b). The industry has used water-based inks successfully on medium-weight papers and on nonabsorbent substrates such as plastics, aluminum, and laminates (Tyszka 1993).
What are gravure inks?
Typically used when high quality and sharp, fine lines are necessary, gravure printing is a type of intaglio printing, using copper cylinders that rotate within a gravure-ink-filled pan, which subsequently transfer an image onto the surface material. …
What are the main components of printing inks?
The main components of the printing ink are:
- Colouring substances – they constitute from 5 to 30% of ink.
- Binder – constitutes from 15 to 50% of the composition of the ink.
- Solvents – these are substances that are designed to dissolve the binder and mix with the other components of the paint.
What is NC based ink?
NC Inks: suitable for applications requiring high heat resistance (surface printing) and relatively low lamination strength. PVC or PVB-PU Inks: designated for packages required to sustain extreme conditions as pasteurization and retort packaging.
What is PU based ink?
Film-forming PU binders Elastomeric polyurethane resins are of a high molecular weight and used alone or in combination with small quantities of NC as a base for printing inks.
What is lithographic ink?
Lithographic printing is a style of printing in which an image is transferred to a printing plate, which is then covered with both water and oil-based ink. After the ink has been applied, the inked image is then transferred to a rubber “blanket”, which is rolled across the image surface.
What are the composition and characteristics of inks?
Ink can be a complex medium, composed of solvents, pigments, dyes, resins, lubricants, solubilizers, surfactants, particulate matter, fluorescents, and other materials.
What chemicals are used in printing?
Several chemicals are known to be used in various solvents in printing industries, including toluene, isopropanol, 2-butanone, ethyl acetate, and methanol (Nagasawa et al., 2011).