Marabu. UltraRotaScreen UVRS. Field of Application. Characteristics

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UV Screen Printing Ink for corona pretreated or top-coated polyethylene (PE) and polypropylene (PP), self-adhesive foils, top-coated polyester PET foils, PVC and paper labels High gloss, very fast curing, good opacity, high chemical resistance, for UV rotary screen printing with cylindrical screen printing stencils from Gallus Screeny and Stork Screens Rotamesh Vers. 07 2009 12 st May Field of Application Substrates UltraRotaScreen is a universal and highly resistant UV-rotary screen printing ink, suitable for the following substrates: Since all UVRS colour shades contain silicone flow-additives, a preliminary check for compatibility of the corresponding UV letter press, UV offset, or UV flexo printing inks is essential. Alternatively the silicone-free ink type UltraRotaScreen UVSF is available. -PE, PP self-adhesive foils, corona pre-treated or top-coated -polyester PET foils, top-coated -PVC, paper labels Since the print substrates mentioned may be different in printability, due to lower surface tensions even within an individual type, preliminary trials are essential to determine suitability for the intended use. For PE foils, we generally recommend highfrequency corona pre-treatment to increase the surface tension to at least 42-44 mn/m. PP foils should exhibit surface tensions of at least 48 mn/m after high-frequency corona pre-treatment for optimum wetting and adhesion of the UV screen printing ink. Field of use UltraRotaScreen has been developed particularly for rotary screen printing with cylindrical printing stencils from Gallus Screeny and Stork Screen Rotamesh used in label printing with modern hybrid/combination printing machines. The UVRS 170 and UVRS 171 whites are best suited as an opaque and full-area basic layer for combination labels over-printed in UV letter press, UV offset, or with some restrictions - UV flexo printing inks on transparent foils. Page 1/5 Characteristics Ink characteristics In regard of viscosity and rheology, all Ultra- RotaScreen UVRS colour shades are pressready, high-glossy, and brilliant at a best possible opacity. The high glossy opaque whites UVRS 170, UVRS 171, UVRS 173, and UVRS 179 (glossy) exhibit a high opacity as well as a very high homogeneous flow for solid areas and exact dot reproduction when printing finest motifs or letters. All UVRS shades can be embossed with suitable hot stamping foils. The printed and totally polymerised ink film has a high chemical and mechanical resistance and offers a good flexibility for die-cutting by means of flat bed or rotary tools. Adjustment of the ink is press-ready. However, please stir well before printing. UVRS exhibits a wide application field on different printing machines without the addition of any auxiliaries but can be modified by additives in its reactivity and viscosity if required. For more details, please see chapter "Additives and Auxiliaries". GmbH & Co. KG Phone: +49-(0)7141-691- 0 info@marabu-inks.com www.marabu-inks.com

Curing UVRS is a very fast curing UV-rotary screen printing ink. A UV-drying unit with one or two medium pressure mercury vapour lamps (150-200 W/cm power) cures all colour shades at a web speed of 25-85 m/min. Generally, the hardening speed of the ink depends on the type of UV-dryer (reflectors), number, age and capacity of the UV-tubes, printed ink film thickness, colour shade, substrate, and web speed of the UV-dryer. is a post-curing UVink. The ink film should pass a tape test after exiting the curing unit and cooled to room temperature. It achieves its maximum chemical and physical resistance (e.g. abrasion resistance) after 24 h due to the given post-curing process of radically curing UV-printing inks. Range Basic shades (13 shades according to System Ultracolor) UVRS 922 UVRS 924 UVRS 926 UVRS 932 UVRS 934 UVRS 936 UVRS 950 Light Yellow Medium Yellow Orange Scarlet Red Carmine Red Magenta Violet UVRS 952 UVRS 956 UVRS 960 UVRS 962 UVRS 970 UVRS 980 Ultramarine Blue Brilliant Blue Blue Green Grass Green White Black All shades are intermixable. To maintain the special characteristics of this outstanding ink range, UVRS should not be mixed with other ink types. The basic shades are stored in our -ColorFormulator (MCF). They build the basis for the calculation of individual formulas, as well as colour matches according to the common reference systems Pantone, and HKS. Fade resistance Depending on the colour shade, pigments of medium to good fade resistance are used for UVRS. This means an outdoor resistance of up to 6 months for shades within the critical yellow-red colour range. Highly fade-resistant shades are available on request. Stress resistance After proper and thorough drying, the ink film exhibits outstanding adhesion as well as rub, scratch, and block resistance, and is highly resistant to solvents, alcohol, finger sweat, water, and common fillers. Stencils, Ink mileage UVRS has especially been developed for rotary screen printing meshes from Gallus Screeny (types KS, KM, KF, and HS) and Stork Screens Rotamesh e.g. RM 305 with 17, 13 or 11% open surface). Ink mileage is about 60-90 m² per kg ink depending on mesh and substrate selected. Page 2/5 All formulas are stored in the -Color Manager 2 (MCM 2) software. Opaque Whites There are four different standard opaque whites available, which can be overprinted very well with UV-curable letterpress- or offset-inks. For overprinting with UV-curable flexo inks, we recommend the silicone-free opaque white alternatives UVSF 170, 172, or 173 (see separate technical data sheet UVSF). UVRS 170 Opaque White High efficient quality product, best possible over-printability with UV-curable letterpressor offset-inks. - very good adhesion also on difficult substrates GmbH & Co.KG Phone: +49-(0)7141-691- 0 info@marabu-inks.com www.marabu-inks.com

UVRS 171 Opaque White Less reactive white for manufacturing equipment with lower web speed, ideally from 20 to 30m/min, best possible over-printability with UV-curable letterpress- or offset-inks. - very good adhesion also on difficult sub strates - max. web speed 50 m/min. - over-curing hardly possible - least tendency for edge curling UVRS 173 Opaque White High efficient and less expensive opaque white compared to UVRS 170 and 171, but with an adhesion reduction on difficult materials. UVRS 179 Opaque White Low-priced white compared to UVRS 170, 171, and 173, but with an adhesion reduction on difficult materials. - glossy finish - opaque - normal degree of whiteness Page 3/5 Opaque Black UVRS 180 Opaque Black Opaque black with high opacity and a deep degree of black for web speed of up to 85 m/min. UVRS 181 Opaque Black Deep-matt opaque black with a velvety surface, insensitive to scratching, for web speed of up to 50 m/min. The pigments used in the above mentioned standard shades, based on their chemical structure, correspond to the EEC regulations EN 71/part 3, safety of toys - migration of specific elements. We do not recommend printing onto labels for toys and food containers for small children due to possible direct mouth contact as we cannot exclude the potential content of unpolymerized monomers and reduction products of photoinitiators even if the ink is totally cured. Additives UVRS 904 Special Binder -as a binder for high-gloss bronze pastes -to extend the ink -to accelerate curing (if UV radiation is too low) An addition of UVRS 904 (1-15% parts by weight) accelerates the curing speed of colour shades and reduces opacity at the same time. UVRS 904 cannot be recommended as a printing varnish since its transparency is not sufficient. UVRS 910 Overprint Varnish Highly reactive and transparent overprint varnish with a high gloss. UVRS 910 has nonyellowing features and is, therefore, best suited as a bronze binder, especially for silver shades. GmbH & Co.KG Phone: +49-(0)7141-691- 0 info@marabu-inks.com www.marabu-inks.com

UVRS 912 Relief Varnish Highly reactive, transparent, and flexible varnish, especially suited for relief printing by using a suitable stencil. For a best flexible adjustment of the varnish, UVV 6 thinner (1 6%) can be added. For braille applications, we recommend to use the UVLB 1 varnish (see separate technical data sheet). Effect Varnishes UVRS 913 Varnish, milky-matt UVRS 916 Varnish, structured Bronzes High-gloss bronzes, Pastes There are 8 high-gloss bronze pastes available which can be mixed with UVRS 910 special binder. They can be chosen according to the required opacity, cost limit, visual impression, and curing characteristics. Economically priced bronzes Slightly structured bronzes with a reasonable price but only low opacity. S-UV 191 S-UV 192 S-UV 193 High-gloss Silver (4:1-7:1) Rich Pale Gold (4:1-7:1) Rich Gold (4:1-7:1) 6 months Highly opaque and metallic bronzes Highly-opaque and metallic bronzes (slightly structured) with an excellent rub resistance. S-UV 291 S-UV 293 High-gloss Silver (4:1 10:1) High-gloss Rich Gold (4:1 10:1) 12 hours All figures in brackets are guidelines which can be changed according to opacity and curing speed. The ratio figures in brackets refer to the mixture bronze binder UVRS 910 to paste whereas the first figure is standing for the parts by weight of bronze binder UVRS 910. Auxiliaries UVV 5 Thinner Due to its low viscosity, UVRS is press-ready and does not require any further adjustments prior to printing. If necessary, however, or in the case of printing bronze shades, 1-6% thinner UVV 5 can be added to the ink. In the case of UVRS 912, we recommend the thinner UVV 6 instead of UVV 5. The thinner to the ink added is bonded chemically in the ink film during UV-curing. If an excessive amount has been added, however, curing speed may be reduced and the ink film will become soft and tacky. High-gloss fine pigmented bronzes Best possible brilliance, excellent opacity, lower rub resistance. S-UV 296 S-UV 297 S-UV 298 Page 4/5 High-gloss Silver (6:1-9:1) High-gloss Rich Pale Gold (6:1-9:1) High-gloss Pale Gold (6:1-9:1) 24 hours Cleaning For manual cleaning of screen printing stencils, our cleaners UR 3 (flame point 42 C) or UR 4 (flame point 52 C) can be used. GmbH & Co.KG Phone: +49-(0)7141-691- 0 info@marabu-inks.com www.marabu-inks.com

Shelf life Shelf life depends very much on the formula/ reactivity of the ink system as well as the storage temperature. It is one year max. for an unopened ink can if stored in a dark room at a temperature of 15 to 25 C. Under different conditions (particularly higher storage temperatures), shelf life will be reduced. In such cases, the warranty given by expires. Labelling For our ink type UltraRotaScreen and its additives and auxiliaries there are current Material Safety Data Sheets according to EC-regulation 1907/2006, covering in detail all relevant safety data including the labelling according to the present EC regulations as to health and safety labelling requirements. Such health and safety data may also be obtained from the respective label. Safety Regulations for UV Screen Printing Inks We recommend that UV screen printing inks and auxiliaries should be handled with particular care. Follow the instructions given on the labels and in the Material Safety Data Sheets. Note Our technical advice whether spoken, written, or through test trials corresponds to our current knowledge to inform about our products and their use. This is not meant as an assurance for certain properties of the products nor their suitability for each application. You are, therefore, obliged to conduct your own tests with our supplied products to confirm their suitability for the desired process or purpose. The selection and testing of the ink for specific application is exclusively your responsibility. Should, however, any liability claims arise, such claims shall be limited to the value of the goods delivered by us and utilised by you with respect to any and all damages not caused intentionally or by gross negligence. Page 5/5 GmbH & Co.KG Phone: +49-(0)7141-691- 0 info@marabu-inks.com www.marabu-inks.com