Ta-945uvma-preliminary-gb

945 UV/ MA
Technical Data Sheet
UV screen printing inks
APPLICATION FIELDS:
Universal low migration UV screen printing inks for the
printing of containers, suitable for substrates made of • pre-treated Polyolefines such as PE/ PP 3.2. Chlor-free pigmented products:
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.
3.3. High opaque products:
CHARACTERISTICS:
• individual ink shades are chlor-free (see top 3.2.) Euro-Colours / 4-Colour Process Printing Inks:
4-colour process printing / 4 Euro-basic colours are avail- and therefore may also be used for printing on the outside Thanks to the good adhesion even when printing at ma- chine speeds up to 3600 pieces/ hour the ink series 945UV/ MA can be used for al industrial screen printing machines. They are designed in high gloss, bril iant , good level ing ADDITIVES:
The inks of the 945 UV/ MA series are constitutional y free from toxic elements and solvents. The raw materials used Thinner:
meet with the limits stipulated by the EEC regulation EN 71 (Safety of toys), part 3 (Migration of Certain Elements) of The inks of the 945 UV/ MA series are ready to use. If further viscosity reduction is desired, UV thinner may be added. In order to increase curing, the addition of reactive RANGE OF COLOURS:
The basic ink mixing system consists of 10 basic colours In general, no solvent-based thinners should be used due to and may be used for the mixing of a wide colour shade range. Field proven mixing formulations exist for Pantone , UV Thinner (max. addition: 2-5 %) 945 UV 0014 MA Basic Colours:
Reactive Thinner (max. addition: 2-5 %) 945 UV 0010 MA The above statements are accurate to our best knowledge and belief. However, due to the great number of possible influences during the manufacture of the sub- strate and the variation in the application process we suggest that suitability testing take place under actual conditions before production. No legal y binding guaran- tee of certain properties or of the suitability for a definite application purpose can be derived from the above information. 945 UV/ MA
Adhesion Modifier:
Un-cured prints are considered a hazardous waste. Therefore, it is recommended to cure misprints under In the case of particularly high resistance requirements the UV lamp as a matter of principle. After curing, spoil- the addition of adhesion modifier is recommended. How- age can be disposed by conventional methods and may ever the addition of adhesion modifier to UV curable ink be incinerated without causing any difficulties. wil lead to a processing time (potlife) of 4-8 hours at 21°C depending on the colour shade. Higher processing CLEANING:
temperatures wil result in a shorter potlife. Screens and squeegees as wel as other working mate- Overprinting must take place within 12 hours at 21°C in rials can be cleaned with the RUCO screen cleaner 32 335. If cleaning is not performed by ful y automatic cleaning equipment, protective gloves must be worn. Adhesion Modifier (max. add.: 2 - 4 %)HV 100 VR 1259 Cleaning liquids that are contaminated with UV products should not be used for the washing of working materials PROCESSING INSTRUCTIONS:
that were used with conventional screen printing inks. Solvents that contain UV residue are not suitable for Pre-treatment:
reclamation and must be treated as a separate waste. In some cases of PET substrates the careful y flame pre- treatment or CORONA-discharge is necessary, surface Cleaner for cleaning equipment WR 100 VR 1240C In case of PE and PC, surface tension needs to be at SHELF LIFE:
least 42 mN/m, in case of PP at least 52 mN/m. A shelf life of 12 months is guaranteed when storing the A test for suitability must always be carried out before inks at 21°C and in the original packing container. At higher storage temperatures the shelf life wil be re- Stencils / Printing Equipment:
PRECAUTIONS:
Screen printing meshes between 120-31 threads/cm and 150-31 threads/cm are suitable for printing with 945 UV UV inks may cause irritations and can increase the sen- inks. The colour mixing formulations are based on 165- sitivity of the skin, possibly leading to hypersensitivity. 34 threads/cm mesh. However, test prints and approval Therefore, the use of disposable gloves and protective of the colour are general y recommended for the respec- tive print jobs. Any acrylic acid ester resistant squeegee For further information on the safety, storage and envi- Curing Conditions:
ronmental aspects concerning these products, please refer to the Material Safety Data Sheet (MSDS). The varying UV absorption of the individual colours re- sults in a range of curing properties depending on colour Additional technical information may be obtained from and opacity. Al colours of the 945 UV series can be our staff of the Technical Application Department. cured by the use of medium pressure mercury vapour The optimum energy output is 150 - 250 Mil ijoule/cm2, measured with Kühnast UV- Integrator under laboratory condition. UV curing is fol owed by a 24 hour post-cure phase after which the ink film is ful y cured and has its 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 The above statements are accurate to our best knowledge and belief. However, due to the great number of possible influences during the manufacture of the substrate and the variation in the application process we suggest that suitability testing take place under actual conditions before production. No legal y binding guarantee of certain properties or of the suitability for a definite application purpose can be derived from the above information.

Source: http://www.kolorgraf.pl/farby/specjalne/945uvma.pdf