Ruco USA, Inc. Reactive Thinner (Max. Addition: 2-5 %) 935 UV Screen Printing Ink 935 UV 0010

Application Fields Universal high-gloss 2 component UV screen printing ink for the printing of glass and ceramics. Substrates may differ in their surface properties or method of manufacture. Therefore, a suitability test must always be carried out before printing. Characteristics This 2 component UV screen printing ink cures under UV lamps, an additional post heat treatment is not required. The inks of the 935 UV series are suitable for multi-color inline printing and excel for their resistance against chemical and cosmetic agents as well as typical beverage industry liquids. Optimal adhesion and scratch resistance can be achieved after 48 hours (storage at room temperature). Water and dishwasher resistance and ice water or frost resistance will be achieved only after approximately 72 hours (storage at room temperature). If the storage temperature is less then 21ºC, the post curing effect will be reduced and the time to achieve the final properties and resistances is prolonged. A special product suitability test is recommended prior to production. The inks of the 935 UV series are constitutionally free from toxic elements and solvents. The raw materials used meet with the limits stipulated by the EEC regulation EN 71 (Safety of toys), part 3 (Migration of Certain Elements) of December 1994. Processing Instructions Pre-treatment Many glass containers are cold end coated (CEC) in order to improve the scratch resistance and obtain a transport protection. Therefore, to achieve good ink adhesion onto glass, a flame, Pyrosil or UVITRO® pre-treatment of the glass surface is necessary. In dependence of different hot and cold end coatings a special product suitability test is recommended prior to production. Stencils/Printing Equipment Screen printing meshes between 120-31 and 165-27 are suitable. A special product test is recommended prior to production. The 935 UV series can be used with all screen-printing machines with screen printing stencils currently used for industrial applications. Any acrylic ester resistant squeegee material may be used. Curing Conditions The varying UV absorption of the individual colors results in a range of curing properties depending on color and opacity. All colors of the 935 UV series can be cured by the use of medium pressure mercury vapor lamps (at least 160 W/cm). When printing high opaque colors we recommend iron doped lamps. However, it must be noted, that low radiation intensity, excessive machine speeds or excessive film thickness can have a negative influence on the curing properties and adhesion. The type of reflector, the doping of UV lamp and finally the size or shape and coloring of glass will influence the curing process and adhesion of the UV ink series. Uncured prints are considered hazardous waste. Therefore, it is recommended to cure misprints under the UV lamp. After curing, waste can be disposed of by conventional methods. Shelf Life A shelf life of 12 months is guaranteed when storing the inks at 21ºC and in the original packing container. At higher storage temperatures the shelf life will be reduced. Precautions UV inks may cause irritations and can increase the sensitivity of the skin, possibly leading to hypersensitivity. Therefore, the use of disposable gloves and protective goggles is strongly recommended. For further information on safety, storage and the environmental aspects regarding these products, please refer to the Material Safety Data Sheet (MSDS). Additional technical information can be obtained from our Technical Application Department.