Flexographic printing ink

Other Applications. PEO has also been used as an antistat additive (178,179), water-soluble packaging material of seeds and fertilizers (180), and rheology modifier in aqueous flexographic printing inks (qv) (181). 

Production of P.Br.5 seems to be discontinued. It enjoyed only limited regional importance. The pigment is the poorest performer of all pigments within its class. P.Br.5 is used in special applications, such as flexographic printing inks, textile inks, and wood stains. 

P.R.169 parallels the P.R.81 types in terms of shade and fastness properties. Thus, P.R.169 types are equally suited to letterpress and offset printing inks, where they provide the standard purple red for three and four color printing in accordance with the so-called DIN scale (Sec. 1.8.1.1). Moreover, P.R.169 is frequently used for toluene-based publication gravure printing inks, where it is sometimes applied in combination with P.R.57 1. A number of grades, however, are not as fast to toluene as comparable P.R.81 varieties. One of the major fields of application for P.R.169 is in aqueous flexographic printing inks. 

UV inks have been readily and successfully adopted by flexographic label printers, many of them having had several years of experience with letterpress UV systems. Because the common thickness of the printed ink in flexography is typically 2 to 4 pm, in multicolor printing it is often necessary to cure individual layers of inks by UV. With radical UV-curable flexographic printing inks, it is possible to achieve printing speeds of 250 m/min (750 ft/min) or even more.22... 

Flexographic printing inks are similar to those used in gravure processes but have a somewhat higher carbon black concentration (10-15%). 

Propanol is used in making n-propyl acetate and as a solvent for waxes, resins, vegetable oils, and flexographic printing ink. It is produced from the fermentation and spoilage of vegetable matter. 

Figure 7 Flexographic printing ink. additive concentration 0.5%, wetting/appearance performance after application on plastic foil(surface energy 34mN/m)by draw down 12 micron, rated on a scale from 0-5...

Figure 8 Flexographic printing ink, additive concentration 0.5%, density measurement after dissolver stirring test (5 min at 2800 rpm) - as a measure of rate of rate foam development...

Chem. Descrip. Specialty urethane acrylic hybrid polymer Uses Urethane-acrylic for overprint and flexographic printing inks Features Water, scuff, and block resist, fair gloss Properties Emulsion vise. 189 cps acid no. 5 pH 5.2 55% NV Paraffin Wax SP173 [Strahl Pitsch]... 

Chem. Descrip. Ethyl methacrylate/methyl acrylate-based polymer Uses Heat-sealing raw material for pkg. of foods and pharmaceuticals binder for mfg. of flexographic printing inks for plastic films, of coating systems for plastics, and esp. heat-sealing lacquers for food pkg. Features Compat. with NC, CAB, vinyl resins, phthalate plasticizers, and printing ink waxes... 

Uses Lubricant, antiwear agent in plastic and elastomeric parts and lubricants improves rub resist., slip, surf, smoothness, and gloss in offset gravure, and flexographic printing inks, coatings can be used alone as dty lubricant... 

A rotogravure or flexographic printing ink has been developed which reduces wear on printing equipment Solvents used in these inks include aliphatic, aromatic, and naphthenic hydrocarbons, alcohols, glycol esters, ketones, esters, and water. With water, glycol esters are used as cosolvents. 

Zolek-Tryznowska, Z., Izdebska, J., Tryznowski, M., 2015. Branched polyglycerols as performance additives for water-based flexographic printing inks. Progress in Organic Coatings 78 (0), 334-339. 

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