These two alternatives allow for a wide field of applications, with related features as follows:
Single Component Ink
Dries through solvent evaporation. “Tack Free” period with hot air circulation at 50/60°C (122/140°F) range is 20 to 45 seconds for a pad printing job.
These values may vary according to the ink deposit thickness. Resistance testing may be done after 48 hours.
Two Component Ink
Initially dries by evaporation. “Tack Free” period with hot air circulation at 50/66°C (122/151°F) range is 30 to 60 seconds for a pad printing job.
Final curing is achieved by a progressive chemical reaction and a maximum resistance is reached after 7 days at room temperature not lower than 16°C (61°F).
This period may be reduced if final drying is accelerated in a drying cabinet at higher temperatures (i.e. 30 minutes at 100°C (212°F).
In all cases the initial drying time may be reduced by increasing the temperature of hot air circulation.
Viscosity Adjustment
There are two diluents used according to work conditions: MP2000-101 Thinner is for common use and MP2000-102 Liquid Retarder is used in high temperature environments or to enhance printing conditions for finer lines if the ink is tending to dry on the pad before deposition.
The use of retarder as a single diluent is not recommended and should be used jointly with the normal thinner in the minimum quantity required to produce the desired effect, otherwise drying may be delayed.
