Ruco USA, Inc. Transparent White (Max. Addition: 10 %) 081 UV Series - Dry Offset Printing Ink 081 UV 0084

Application Fields Especially designed ITX free UV dry offset inks for printing onto tubes, made of Polyolefines (PE/PP). Other material could also be printed. Substrates may differ in their chemical structure or method of manufacture. A test for suitability must always be carried out before printing. Antistatic, Mould Release Agents and Slip Additives may have negative effects on adhesion, and should be detected and removed prior to printing. Characteristics The highly reactive UV dry offset printing inks of series 081 UV show high curing speed. 081 UV inks are formulated for over printability with UV OPV. The inks of the 081 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. The inks of this series are ITX free and suitable for printing on the outside of food packaging. The ink exhibits excellent printing properties and provides low migration values that should not exceed 10 ppb provided the inks are properly applied. Processing Instructions Pre-treatment Pre-treatment of polyolefines (PE/PP) must be performed by CORONA-discharge or flame in order to insure the adhesion of the UV printing ink to the substrate. In case of PE, surface tension needs to be at least 42 mN/m (Dynes/cm), in case of PP at least 44-48 mN/m (in particular case 42 mN/m) as optimal surface tension. However pre-treatment is not the only parameter to be taken into consideration for adhesion. A special product test is recommended prior to production. 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 081 UV series can be cured by the use of medium pressure mercury vapor lamps (at 120-160 W/cm). The minimum recommended energy output is 100 Millijoule/cm² (measured with Kã¼hnast Integrator under Lab condition). Ink film shows its final properties 12 hour after UV curing. 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. Un-cured prints are considered a hazardous waste. Therefore, it is recommended to cure misprints under the UV lamp as a matter of principle. After curing, spoilage can be disposed by conventional methods and may be incinerated without causing any difficulties. 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 the safety, storage and environmental aspects concerning these products please refer to the Material Safety Data Sheet (MSDS). Additional technical information may be obtained from our staff of the Technical Application Department.