Ink Curing Information - Printa Systems 990 series Quick Manual

990 Pad Printing System Quick Guide
Most products that are pad printed require a heat curing afterwards to promote the bonding properties of
the inks. Some products such as solvent sensitive plastics, wood and paper may not require heat curing.
Most of your harder goods will require heat curing for the proper bonding. A good rule of thumb is the
harder the product, the more heat you will need. Because there are so many variables when dealing with
plastics, it is almost impossible to give an accurate temperature for curing. If a plastic is solvent sensitive: the
thinner melts into the plastic and bonds almost immediately, then a lower temperature can be used. If you
wipe some thinner on a product and it does not dull the surface and wipes off, then you will need a higher
temperature. Glass and ceramics always require a high temperature for superior adhesion. The chart below is
for the KK series inks. The inks can air dry depending on your substrate and application, but heat curing is
always recommended. ALWAYS TEST YOUR PRODUCT FOR RESISTANCE TO HEAT!
APPLICATION
Solvent sensitive plastics
Hard plastics*
Glass & Ceramics*
* The harder the object to be printed, it is always advisable to wipe down the product with rubbing alcohol
to help promote a clean surface. DO NOT use thinners or windex to clean the product as this will leave a film
that can cause adhesion problems during the curing process.

Ink Curing Information

TIME & TEMPERATURE
1 - 2 minutes @ 120 - 160 degrees F
1-5 minutes @ 120 - 220 degrees F
10 minutes @ 365 degrees F
13