print and finishing.
Viscosity (DIN 4 @ 20Â°C)
Gloss (Sheen @ 60Â°on Gloss Art) Drying Speed
Rub Resistance Slip Values Heat Resistance
Recommended Minimum Back up time Minimum Substrate Grammage Glueable
Recommended film weight
43-48 Seconds 7.8-8.2 38-42 % 70-75 Medium – Fast Good Static â€“ 0.40, Dynamic 0.30 140 Â°C
Double 120 minutes 115 gsm Yes Yes Yes 3-5 gsm wet
1781 is suitable for use in the carton, commercial and magazine sectors, and is recommended for food work if contact is indirect. This coating is not suitable for direct food contact. 1781 is also suitable for use on toy packaging and certain school materials. For further technical details, please consult â€œHealth and Safetyâ€ data sheets.
Coating 1781 is suitable for application via the majority of in- line coaters on Heidelberg, Komoriâ€™s, Mitsubishi, Roland, KBA, Ryobi, etc. Application can be via conventional three roller methods or new technology enclosed chamber anilox systems.
General Technical Details:
1781 has been formulated to provide a high gloss finish, whilst possessing suitable re-solubility characteristics making it recommended for double sided work and turn applications. Back up times will depend however on substrate type, ink film weight and press conditions, although it is recommended that printed material has been left to set for at least 120 minutes prior to re-working.
1781 does not contain any detrimental surface tension modifiers, and is therefore suitable for subsequent finishing operations such as foil blocking, gluing, lamination and UV varnishing: Certain recommendations will need to be followed if UV varnishing â€“ please contact the laboratory for further information.
It is not suitable for application to substrates below 115 gsm. Lower grammage stocks may exhibit distortion or curl. Optimum drying conditions would include the use of hot air knives, and IR lamps. IR lamps should be kept to a minimum, with direct stack temperatures not falling below 27 Â°C or rise above 34 Â°C. For short runs, stack temperatures may not reach the optimum figures, and this must be considered if attempting to back up work rapidly.
Light application of a middle grade spray powder is recommended.
Storage and Handling:
Waterbased emulsions should not be exposed to temperatures below 5Â°C or above 35Â°C. During cold months, it is recommended that containers are kept off cold floors and stored on pallets. The shelf life of this coating is â€“ if unopened and stored in the correct conditions â€“ 12 months.
Waterbased emulsions are non hazardous and require no special storage or labelling.