Ge-ka Supplies

UV1000 SCREEN

PROPERTIES
  • Good adhesion on paper, cardboard, OPP lamination film and a broad series of screen and offset inks.
  • Adhesion on other substrates should be tested prior to printing
  • These varnishes show good flexibility, when bended or folded
  • The varnishes are press-ready to print for screen
  • The varnishes are low in odour
  • The varnishes can be printed over offset inks
  • Quick and safe drying but the surface tension of the film or the substrate should at least be 38 dynes/cm
Ref. Characteristics Gloss Viscosity 21°C DIN 4 in sec Viscosity 21°C
Brookfield in mPa.s
UV1000 Standard screen varnish High 50 – 70  
UV1001 UV embossing screenprinting varnish High 150 – 200  
UV1002 For absorbing substrates High   4200 – 6200
UV1003 Braille varnish for flatbed LV High   8000 – 10000
UV1004 For exterior applications High 60 – 90  
UV1005 Braille varnish mat for flatbed Low   8000 – 12000
UV1006 Perfecting varnish High 50 – 70  
UV1007 Rotation braille varnish High   900 – 1400
UV1008 For overprinting of digital prints High   850 – 1150
UV1009 Soft touch varnish for plastics Low   20000 – 30000
UV1010 Low viscosity screen varnish High 30 – 50  
UV1011 Mat varnish Low   1500 – 2500
UV1012 Pearlescent varnish High  

700 – 900

UV1013 Antislip Medium   4000 – 6000
UV1014 All round High 50 – 70  
UV1015 Gluable gloss overprintvarnish High 120 – 150  
UV1020 Braille varnish for Flatbed HV High   12000 – 15000
UV1021 Varnish for absorbing substrates Medium   5000 – 7000
UV1022 For overprinting offset inks High   60 – 90
UV1024 Hot stamping varnish Medium    
UV1025 Frost varnish, ice image High    
UV1026 Foam varnish High    
UV1027 Sand effect varnish Low    
UV1028 Frost varnish, snow image High    
UV1029 Release varnish / Anti-Graffiti High    
UV1031 Varnish with luminescent properties High 50 – 70  
UV1032 High rub- and scratchresistant Medium 120 – 150  
UV1039 Soft touch for paper/carton Medium 180 – 210  
UV1040 Low migration gloss High 40 – 70

 

RECOMMENDED MESH

Depends on the type of varnish and on the type of application (effect to be achieved). In case of doubt, please contact our office.

CLEANING THE MESH

The mesh should be cleaned with standard washing agent UV0009 or with our label free washing agent UV0002. Both are waterdilutable.

DRYING

This varnish is formulated to cure under a dryer with one medium pressure mercury 120W/cm lamp at 30-40 metres/min. The better the UV drying, the better the adhesion on the substrate. 150mJoule is recommended. The curing depends on the kind of UV curing unit (reflectors, age and power of the UV lamps, the printed inklayer thickness and the belt speed of the UV curing unit). In certain cases the flow and the gloss can be improved by passing prints under IR lamps prior to UV curing.

POST CURING

The adhesion of the varnish is best evaluated after 24 hours. In this time interval, a post curing effect takes place during which the varnish cools down and the UV chemical termination reaction happens, resulting in a better adhesion.

SAFETY

UV varnishes is formulated free of heavy metals and complies with EN 71/3 standard.
These varnishes are REACH compliant and free from SVHC substances (Reach annex XIV) and substances mentioned on the candidate list (last update 16122014).
Please consult the MSDS.

SHELFLIFE & STORAGE

When the UV varnish is stored between 15 and 20°C in its closed original can, shelf life will be minimum 12 months from date of manufacture. Varnish taken from the press should not be returned to the original container, but stored separately to avoid contamination of unused UV varnish.

REMARKS
  1. All surfaces must be free from grease, clean and dry before coating.
  2. As said, the surface to be printed should at least be 38 dynes/cm. Any tension lower than 38 will inevitable result in a poor or no adhesion. We strongly recommend that the surface tension be measured prior to printing in order to avoid claims from the end user of the printed product.
  3. The surface tension of the cured film with non gluable varnish is < 34 mN/m
  4. We also strongly recommend, before starting the varnishing, to check the print for bleeding resistance, as certain pigments in the inks tend to bleed when overlacquered with UV varnishes.

 

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