Glass Ink GL
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Technical Data Sheet Screen and Pad Printing Ink for glass, ce- Satin-gloss finish, high opacity, fast drying ramies, metals, aluminium, chrome-plated 2-component ink system, dishwasher-proof parts, coated substrates, and thermosetting plastics Field of Application Substrates The screen printing ink Glass Ink GL is excellently suited to print onto • Glass • Ceramics • Metals (incl. thinly anodised aluminium) • Chrome-plated parts • Varnished surfaces • Thermosetting plastics Equal surface tension of at least 38 mN/m ensures good adhesion. Furthermore, the glass surface must be clean and absolutely free of graphite, silicone, dust or grease (e.g. finger prints). Flame pre-treatment right before the start of the printing process generally improves adhesion. Since all the print substrates mentioned may be different in printability even within an individual type, preliminary trials are essential to determine the suitability for the intended use. Field of use Glass Ink GL is designed for indoor decoration prints onto promotional items of glass or ceramics such as pre-printed glass panes, bottles, and tiles. This special ink has, compared to other 2-component inks, a very good adhesion to the substrate and is highly water-resistant. It can also be used for advertising materials made of glass and ceramics which demand a limited dishwasher resistance. Glass Ink GL is not suitable for permanent outdoor use or direct exposure to UV light indoors due to the characteristics of the binder. After proper drying, GL is also suited for metal-coating with dark mirror protection varnishes. Glass Ink GL also adheres very well onto a variety of metals, such as chrome-plated writing instruments. GL can also be processed with a spray gun, but preliminary trials are necessary for this process. In order to avoid surface irregularities, we recommend to filter the thinned ink (25 pm screen) before processing. Characteristics Ink Adjustment The ink should be stirred homogeneously before printing and if necessary during production. GL is a 2-component ink system. Prior to printing, it is essential to add hardener in the correct quantity and to stir homogeneously. The two different ratios are: 1) 5% Hardener (GLH) 20 parts by w. of ink + 1 part by w. of hardener 2) 10% Hardener (GLH) 10 parts by w. of ink + 1 part by w. of hardener The second variation must be applied if high chemical resistance (e.g. rub resistance against chemicals like Ethanol, MEK oder Acetone) is required. Exception: Only add 5% hardener to White GL 070 or ink mixtures containing more than 50% White. When using hardener, the processing and curing temperature must not be lower than 15°C as irreversible damage can occur. Please also avoid high humidity for several hours after printing as the hardener is sensitive to humidity. Marabu GmbH & Co. KG • Phone +49 7141 6910 • info@marabu-inks.com • www.marabu-inks.com

Technical Data Sheet Pre-reaction time It is recommended to allow the ink/hardener mixture to pre-react for 15 minutes. Pot life The ink/hardener mixture is chemically reactive and must be processed within 8 - 12 h with 5% hardener 4 - 6 h with 10% hardener (referred to 20-25 °C and 45-60 % RH). Higher temperatures reduce the pot life. If the mentioned times are exceeded, the ink's adhesion and resistance may be reduced even if the ink still seems processable. Drying Parallel to physical drying, i. e. the evaporation of the solvents used, the actual hardening of the ink film is caused by...

Technical Data Sheet Marabu GmbH & Co. KG • Phone +49 7141 6910 • info@marabu-inks.com DRS: Double Rub Strokes (350 g) Humidity resistance: • Condensation Water Test 70°C/100% RH/30 min • Cold Water Immersion Test / 24h In order to increase the mechanical resistance, we recommend an overprint with varnish GL 910 or Mara® Poly P 910. Bright colour shades, e.g. white, may darken if the print is constantly exposed to temperatures > 40° C. Range Basic Shades 020 Lemon 4-Colour Process Shades Standard Transparent Shades Press-Ready Metallics 192 Rich Pale Gold Etch Imitation Effects 913...

Technical Data Sheet cation. We recommend preparing a mixture which can be processed within a maximum of 8 h since metallic mixtures usually cannot be stored. Due to their chemical structure, the processing time of mixtures with Pale Gold S 184 and Copper S 186 is even reduced to 4 h. Owing to the smaller pigment size of Metallic Pastes it is possible to work with finer fabrics like 140-31 to 150-31. Owing to the bigger pigment size of Metallic Powders we recommend the use of a coarser fabric like 100-40, or a halftone cliche with a minimum depth of 25-30 gm. Shades made of Metallic Powders...

Technical Data Sheet tems as well as for open ink wells. Depending on type and usage of the machine, it is to accordingly adjust type and amount of the thinner used. Shelf Life Shelf life depends very much on the formula/ reactivity of the ink system as well as the storage temperature. The shelf life for an unopened ink container if stored in a dark room at a temperature of 15 -25 °C is: • 3.5 years for basic shades 020 - 073 and 409-473, 273, 910, 913,915 • 2.5 years for 914 and transp. shades 525-565 • 2 years for 191 & 193 • 1 year for 192 Under different conditions, particularly...